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Overview
Comment:Merge in the massive clean-up and ANSI-fication of Lemon carried out by Ryan Gordon. There are no functional changes to SQLite itself - Lemon still generates exactly the same parsing automaton from exactly the same grammar.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1:1e8b842039cc06b57a321226633c55b94eb8dcd7
User & Date: drh 2010-02-22 19:37:44
References
2011-06-20
18:27
Fix compiler warnings in lemon by removing some of the code added by Ryan Gordon in [1e8b842039cc0]. check-in: 76b18b2b user: drh tags: trunk
Context
2010-02-22
23:17
Fix an assertion-fault/segfault problem that comes up when trying to VACUUM an auto-vacuumed database with a large schema. Ticket [da1151f97df244]. check-in: 86d50ce5 user: drh tags: trunk
19:37
Merge in the massive clean-up and ANSI-fication of Lemon carried out by Ryan Gordon. There are no functional changes to SQLite itself - Lemon still generates exactly the same parsing automaton from exactly the same grammar. check-in: 1e8b8420 user: drh tags: trunk
19:32
Log all error messages if logging is enabled. check-in: a8076aed user: drh tags: trunk
2010-02-17
20:31
Report error if the grammar has multiple %type lines for the same nonterminal. check-in: 721f33e7 user: icculus tags: lemon-update-2010
Changes
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#define PRIVATE

#ifdef TEST
#define MAXRHS 5       /* Set low to exercise exception code */
#else
#define MAXRHS 1000
#endif



















static char *msort(char*,char**,int(*)(const char*,const char*));

/*
** Compilers are getting increasingly pedantic about type conversions
** as C evolves ever closer to Ada....  To work around the latest problems
** we have to define the following variant of strlen().
*/
#define lemonStrlen(X)   ((int)strlen(X))






static struct action *Action_new(void);
static struct action *Action_sort(struct action *);

/********** From the file "build.h" ************************************/
void FindRulePrecedences();
void FindFirstSets();
void FindStates();
void FindLinks();
void FindFollowSets();
void FindActions();

/********* From the file "configlist.h" *********************************/
void Configlist_init(/* void */);
struct config *Configlist_add(/* struct rule *, int */);
struct config *Configlist_addbasis(/* struct rule *, int */);
void Configlist_closure(/* void */);
void Configlist_sort(/* void */);
void Configlist_sortbasis(/* void */);
struct config *Configlist_return(/* void */);
struct config *Configlist_basis(/* void */);
void Configlist_eat(/* struct config * */);
void Configlist_reset(/* void */);

/********* From the file "error.h" ***************************************/
void ErrorMsg(const char *, int,const char *, ...);

/****** From the file "option.h" ******************************************/
struct s_options {
  enum { OPT_FLAG=1,  OPT_INT,  OPT_DBL,  OPT_STR,
         OPT_FFLAG, OPT_FINT, OPT_FDBL, OPT_FSTR} type;


  char *label;
  char *arg;
  char *message;
};
int    OptInit(/* char**,struct s_options*,FILE* */);
int    OptNArgs(/* void */);
char  *OptArg(/* int */);
void   OptErr(/* int */);
void   OptPrint(/* void */);

/******** From the file "parse.h" *****************************************/
void Parse(/* struct lemon *lemp */);

/********* From the file "plink.h" ***************************************/
struct plink *Plink_new(/* void */);
void Plink_add(/* struct plink **, struct config * */);
void Plink_copy(/* struct plink **, struct plink * */);
void Plink_delete(/* struct plink * */);

/********** From the file "report.h" *************************************/
void Reprint(/* struct lemon * */);
void ReportOutput(/* struct lemon * */);
void ReportTable(/* struct lemon * */);
void ReportHeader(/* struct lemon * */);
void CompressTables(/* struct lemon * */);
void ResortStates(/* struct lemon * */);

/********** From the file "set.h" ****************************************/
void  SetSize(/* int N */);             /* All sets will be of size N */
char *SetNew(/* void */);               /* A new set for element 0..N */
void  SetFree(/* char* */);             /* Deallocate a set */


int SetAdd(/* char*,int */);            /* Add element to a set */
int SetUnion(/* char *A,char *B */);    /* A <- A U B, thru element N */

#define SetFind(X,Y) (X[Y])       /* True if Y is in set X */

/********** From the file "struct.h" *************************************/
/*
** Principal data structures for the LEMON parser generator.
*/

typedef enum {LEMON_FALSE=0, LEMON_TRUE} Boolean;

/* Symbols (terminals and nonterminals) of the grammar are stored
** in the following: */
struct symbol {
  char *name;              /* Name of the symbol */
  int index;               /* Index number for this symbol */
  enum {
    TERMINAL,
    NONTERMINAL,
    MULTITERMINAL
  } type;                  /* Symbols are all either TERMINALS or NTs */
  struct rule *rule;       /* Linked list of rules of this (if an NT) */
  struct symbol *fallback; /* fallback token in case this token doesn't parse */
  int prec;                /* Precedence if defined (-1 otherwise) */

  enum e_assoc {
    LEFT,
    RIGHT,
    NONE,
    UNK








  } assoc;                 /* Associativity if precedence is defined */
  char *firstset;          /* First-set for all rules of this symbol */
  Boolean lambda;          /* True if NT and can generate an empty string */
  int useCnt;              /* Number of times used */
  char *destructor;        /* Code which executes whenever this symbol is
                           ** popped from the stack during error processing */
  int destLineno;          /* Line number for start of destructor */
  char *datatype;          /* The data type of information held by this
................................................................................
  struct symbol **subsym;  /* Array of constituent symbols */
};

/* Each production rule in the grammar is stored in the following
** structure.  */
struct rule {
  struct symbol *lhs;      /* Left-hand side of the rule */
  char *lhsalias;          /* Alias for the LHS (NULL if none) */
  int lhsStart;            /* True if left-hand side is the start symbol */
  int ruleline;            /* Line number for the rule */
  int nrhs;                /* Number of RHS symbols */
  struct symbol **rhs;     /* The RHS symbols */
  char **rhsalias;         /* An alias for each RHS symbol (NULL if none) */
  int line;                /* Line number at which code begins */
  char *code;              /* The code executed when this rule is reduced */
  struct symbol *precsym;  /* Precedence symbol for this rule */
  int index;               /* An index number for this rule */
  Boolean canReduce;       /* True if this rule is ever reduced */
  struct rule *nextlhs;    /* Next rule with the same LHS */
  struct rule *next;       /* Next rule in the global list */
};

/* A configuration is a production rule of the grammar together with
** a mark (dot) showing how much of that rule has been processed so far.
** Configurations also contain a follow-set which is a list of terminal
** symbols which are allowed to immediately follow the end of the rule.
** Every configuration is recorded as an instance of the following: */




struct config {
  struct rule *rp;         /* The rule upon which the configuration is based */
  int dot;                 /* The parse point */
  char *fws;               /* Follow-set for this configuration only */
  struct plink *fplp;      /* Follow-set forward propagation links */
  struct plink *bplp;      /* Follow-set backwards propagation links */
  struct state *stp;       /* Pointer to state which contains this */
  enum {
    COMPLETE,              /* The status is used during followset and */
    INCOMPLETE             /*    shift computations */
  } status;
  struct config *next;     /* Next configuration in the state */
  struct config *bp;       /* The next basis configuration */
};














/* Every shift or reduce operation is stored as one of the following */
struct action {
  struct symbol *sp;       /* The look-ahead symbol */
  enum e_action {
    SHIFT,
    ACCEPT,
    REDUCE,
    ERROR,
    SSCONFLICT,              /* A shift/shift conflict */
    SRCONFLICT,              /* Was a reduce, but part of a conflict */
    RRCONFLICT,              /* Was a reduce, but part of a conflict */
    SH_RESOLVED,             /* Was a shift.  Precedence resolved conflict */
    RD_RESOLVED,             /* Was reduce.  Precedence resolved conflict */
    NOT_USED                 /* Deleted by compression */
  } type;
  union {
    struct state *stp;     /* The new state, if a shift */
    struct rule *rp;       /* The rule, if a reduce */
  } x;
  struct action *next;     /* Next action for this state */
  struct action *collide;  /* Next action with the same hash */
};
................................................................................
** by the associative array code building program "aagen".
** Do not edit this file!  Instead, edit the specification
** file, then rerun aagen.
*/
/*
** Code for processing tables in the LEMON parser generator.
*/

/* Routines for handling a strings */

char *Strsafe();

void Strsafe_init(/* void */);
int Strsafe_insert(/* char * */);
char *Strsafe_find(/* char * */);

/* Routines for handling symbols of the grammar */

struct symbol *Symbol_new();
int Symbolcmpp(/* struct symbol **, struct symbol ** */);
void Symbol_init(/* void */);
int Symbol_insert(/* struct symbol *, char * */);
struct symbol *Symbol_find(/* char * */);
struct symbol *Symbol_Nth(/* int */);
int Symbol_count(/*  */);
struct symbol **Symbol_arrayof(/*  */);

/* Routines to manage the state table */

int Configcmp(/* struct config *, struct config * */);
struct state *State_new();
void State_init(/* void */);
int State_insert(/* struct state *, struct config * */);
struct state *State_find(/* struct config * */);
struct state **State_arrayof(/*  */);

/* Routines used for efficiency in Configlist_add */

void Configtable_init(/* void */);
int Configtable_insert(/* struct config * */);
struct config *Configtable_find(/* struct config * */);
void Configtable_clear(/* int(*)(struct config *) */);

/****************** From the file "action.c" *******************************/
/*
** Routines processing parser actions in the LEMON parser generator.
*/

/* Allocate a new parser action */
static struct action *Action_new(void){
  static struct action *freelist = 0;
  struct action *new;

  if( freelist==0 ){
    int i;
    int amt = 100;
    freelist = (struct action *)calloc(amt, sizeof(struct action));
    if( freelist==0 ){
      fprintf(stderr,"Unable to allocate memory for a new parser action.");
      exit(1);
    }
    for(i=0; i<amt-1; i++) freelist[i].next = &freelist[i+1];
    freelist[amt-1].next = 0;
  }
  new = freelist;
  freelist = freelist->next;
  return new;
}

/* Compare two actions for sorting purposes.  Return negative, zero, or
** positive if the first action is less than, equal to, or greater than
** the first
*/
static int actioncmp(
................................................................................
  struct action *ap
){
  ap = (struct action *)msort((char *)ap,(char **)&ap->next,
                              (int(*)(const char*,const char*))actioncmp);
  return ap;
}

void Action_add(app,type,sp,arg)
struct action **app;
enum e_action type;
struct symbol *sp;
char *arg;
{

  struct action *new;
  new = Action_new();
  new->next = *app;
  *app = new;
  new->type = type;
  new->sp = sp;
  if( type==SHIFT ){
    new->x.stp = (struct state *)arg;
  }else{
    new->x.rp = (struct rule *)arg;
  }
}
/********************** New code to implement the "acttab" module ***********/
/*
** This module implements routines use to construct the yy_action[] table.
*/

................................................................................
** All actions associated with a single state_number are first entered
** into aLookahead[] using multiple calls to acttab_action().  Then the 
** actions for that single state_number are placed into the aAction[] 
** array with a single call to acttab_insert().  The acttab_insert() call
** also resets the aLookahead[] array in preparation for the next
** state number.
*/




typedef struct acttab acttab;
struct acttab {
  int nAction;                 /* Number of used slots in aAction[] */
  int nActionAlloc;            /* Slots allocated for aAction[] */
  struct {
    int lookahead;             /* Value of the lookahead token */
    int action;                /* Action to take on the given lookahead */
  } *aAction,                  /* The yy_action[] table under construction */
    *aLookahead;               /* A single new transaction set */
  int mnLookahead;             /* Minimum aLookahead[].lookahead */
  int mnAction;                /* Action associated with mnLookahead */
  int mxLookahead;             /* Maximum aLookahead[].lookahead */
  int nLookahead;              /* Used slots in aLookahead[] */
  int nLookaheadAlloc;         /* Slots allocated in aLookahead[] */
};
................................................................................
  free( p->aAction );
  free( p->aLookahead );
  free( p );
}

/* Allocate a new acttab structure */
acttab *acttab_alloc(void){
  acttab *p = calloc( 1, sizeof(*p) );
  if( p==0 ){
    fprintf(stderr,"Unable to allocate memory for a new acttab.");
    exit(1);
  }
  memset(p, 0, sizeof(*p));
  return p;
}
................................................................................
**
** This routine is called once for each lookahead for a particular
** state.
*/
void acttab_action(acttab *p, int lookahead, int action){
  if( p->nLookahead>=p->nLookaheadAlloc ){
    p->nLookaheadAlloc += 25;
    p->aLookahead = realloc( p->aLookahead,
                             sizeof(p->aLookahead[0])*p->nLookaheadAlloc );
    if( p->aLookahead==0 ){
      fprintf(stderr,"malloc failed\n");
      exit(1);
    }
  }
  if( p->nLookahead==0 ){
................................................................................
  ** in the worst case.  The worst case occurs if the transaction set
  ** must be appended to the current action table
  */
  n = p->mxLookahead + 1;
  if( p->nAction + n >= p->nActionAlloc ){
    int oldAlloc = p->nActionAlloc;
    p->nActionAlloc = p->nAction + n + p->nActionAlloc + 20;
    p->aAction = realloc( p->aAction,
                          sizeof(p->aAction[0])*p->nActionAlloc);
    if( p->aAction==0 ){
      fprintf(stderr,"malloc failed\n");
      exit(1);
    }
    for(i=oldAlloc; i<p->nActionAlloc; i++){
      p->aAction[i].lookahead = -1;
................................................................................
** Those rules which have a precedence symbol coded in the input
** grammar using the "[symbol]" construct will already have the
** rp->precsym field filled.  Other rules take as their precedence
** symbol the first RHS symbol with a defined precedence.  If there
** are not RHS symbols with a defined precedence, the precedence
** symbol field is left blank.
*/
void FindRulePrecedences(xp)
struct lemon *xp;
{
  struct rule *rp;
  for(rp=xp->rule; rp; rp=rp->next){
    if( rp->precsym==0 ){
      int i, j;
      for(i=0; i<rp->nrhs && rp->precsym==0; i++){
        struct symbol *sp = rp->rhs[i];
................................................................................
}

/* Find all nonterminals which will generate the empty string.
** Then go back and compute the first sets of every nonterminal.
** The first set is the set of all terminal symbols which can begin
** a string generated by that nonterminal.
*/
void FindFirstSets(lemp)
struct lemon *lemp;
{
  int i, j;
  struct rule *rp;
  int progress;

  for(i=0; i<lemp->nsymbol; i++){
    lemp->symbols[i]->lambda = LEMON_FALSE;
................................................................................
  return;
}

/* Compute all LR(0) states for the grammar.  Links
** are added to between some states so that the LR(1) follow sets
** can be computed later.
*/
PRIVATE struct state *getstate(/* struct lemon * */);  /* forward reference */
void FindStates(lemp)
struct lemon *lemp;
{
  struct symbol *sp;
  struct rule *rp;

  Configlist_init();

  /* Find the start symbol */
................................................................................
  (void)getstate(lemp);
  return;
}

/* Return a pointer to a state which is described by the configuration
** list which has been built from calls to Configlist_add.
*/
PRIVATE void buildshifts(/* struct lemon *, struct state * */); /* Forwd ref */
PRIVATE struct state *getstate(lemp)
struct lemon *lemp;
{
  struct config *cfp, *bp;
  struct state *stp;

  /* Extract the sorted basis of the new state.  The basis was constructed
  ** by prior calls to "Configlist_addbasis()". */
  Configlist_sortbasis();
................................................................................
  }
  return stp;
}

/*
** Return true if two symbols are the same.
*/
int same_symbol(a,b)
struct symbol *a;
struct symbol *b;
{
  int i;
  if( a==b ) return 1;
  if( a->type!=MULTITERMINAL ) return 0;
  if( b->type!=MULTITERMINAL ) return 0;
  if( a->nsubsym!=b->nsubsym ) return 0;
  for(i=0; i<a->nsubsym; i++){
................................................................................
  }
  return 1;
}

/* Construct all successor states to the given state.  A "successor"
** state is any state which can be reached by a shift action.
*/
PRIVATE void buildshifts(lemp,stp)
struct lemon *lemp;
struct state *stp;     /* The state from which successors are computed */
{
  struct config *cfp;  /* For looping thru the config closure of "stp" */
  struct config *bcfp; /* For the inner loop on config closure of "stp" */
  struct config *new;  /* */
  struct symbol *sp;   /* Symbol following the dot in configuration "cfp" */
  struct symbol *bsp;  /* Symbol following the dot in configuration "bcfp" */
  struct state *newstp; /* A pointer to a successor state */

  /* Each configuration becomes complete after it contibutes to a successor
  ** state.  Initially, all configurations are incomplete */
  for(cfp=stp->cfp; cfp; cfp=cfp->next) cfp->status = INCOMPLETE;
................................................................................
    ** construction but with the dot shifted one symbol to the right. */
    for(bcfp=cfp; bcfp; bcfp=bcfp->next){
      if( bcfp->status==COMPLETE ) continue;    /* Already used */
      if( bcfp->dot>=bcfp->rp->nrhs ) continue; /* Can't shift this one */
      bsp = bcfp->rp->rhs[bcfp->dot];           /* Get symbol after dot */
      if( !same_symbol(bsp,sp) ) continue;      /* Must be same as for "cfp" */
      bcfp->status = COMPLETE;                  /* Mark this config as used */
      new = Configlist_addbasis(bcfp->rp,bcfp->dot+1);
      Plink_add(&new->bplp,bcfp);
    }

    /* Get a pointer to the state described by the basis configuration set
    ** constructed in the preceding loop */
    newstp = getstate(lemp);

    /* The state "newstp" is reached from the state "stp" by a shift action
................................................................................
    }
  }
}

/*
** Construct the propagation links
*/
void FindLinks(lemp)
struct lemon *lemp;
{
  int i;
  struct config *cfp, *other;
  struct state *stp;
  struct plink *plp;

  /* Housekeeping detail:
................................................................................
}

/* Compute all followsets.
**
** A followset is the set of all symbols which can come immediately
** after a configuration.
*/
void FindFollowSets(lemp)
struct lemon *lemp;
{
  int i;
  struct config *cfp;
  struct plink *plp;
  int progress;
  int change;

................................................................................
	}
        cfp->status = COMPLETE;
      }
    }
  }while( progress );
}

static int resolve_conflict();

/* Compute the reduce actions, and resolve conflicts.
*/
void FindActions(lemp)
struct lemon *lemp;
{
  int i,j;
  struct config *cfp;
  struct state *stp;
  struct symbol *sp;
  struct rule *rp;

................................................................................
**   is not associated with the error rule.  If neither or both
**   actions are associated with an error rule, then try to
**   use precedence to resolve the conflict.
**
** If either action is a SHIFT, then it must be apx.  This
** function won't work if apx->type==REDUCE and apy->type==SHIFT.
*/
static int resolve_conflict(apx,apy,errsym)
struct action *apx;
struct action *apy;
struct symbol *errsym;   /* The error symbol (if defined.  NULL otherwise) */
{

  struct symbol *spx, *spy;
  int errcnt = 0;
  assert( apx->sp==apy->sp );  /* Otherwise there would be no conflict */
  if( apx->type==SHIFT && apy->type==SHIFT ){
    apy->type = SSCONFLICT;
    errcnt++;
  }
................................................................................
static struct config *current = 0;       /* Top of list of configurations */
static struct config **currentend = 0;   /* Last on list of configs */
static struct config *basis = 0;         /* Top of list of basis configs */
static struct config **basisend = 0;     /* End of list of basis configs */

/* Return a pointer to a new configuration */
PRIVATE struct config *newconfig(){
  struct config *new;
  if( freelist==0 ){
    int i;
    int amt = 3;
    freelist = (struct config *)calloc( amt, sizeof(struct config) );
    if( freelist==0 ){
      fprintf(stderr,"Unable to allocate memory for a new configuration.");
      exit(1);
    }
    for(i=0; i<amt-1; i++) freelist[i].next = &freelist[i+1];
    freelist[amt-1].next = 0;
  }
  new = freelist;
  freelist = freelist->next;
  return new;
}

/* The configuration "old" is no longer used */
PRIVATE void deleteconfig(old)
struct config *old;
{
  old->next = freelist;
  freelist = old;
}

/* Initialized the configuration list builder */
void Configlist_init(){
................................................................................
  basis = 0;
  basisend = &basis;
  Configtable_clear(0);
  return;
}

/* Add another configuration to the configuration list */
struct config *Configlist_add(rp,dot)
struct rule *rp;    /* The rule */
int dot;            /* Index into the RHS of the rule where the dot goes */
{

  struct config *cfp, model;

  assert( currentend!=0 );
  model.rp = rp;
  model.dot = dot;
  cfp = Configtable_find(&model);
  if( cfp==0 ){
................................................................................
    currentend = &cfp->next;
    Configtable_insert(cfp);
  }
  return cfp;
}

/* Add a basis configuration to the configuration list */
struct config *Configlist_addbasis(rp,dot)
struct rule *rp;
int dot;
{
  struct config *cfp, model;

  assert( basisend!=0 );
  assert( currentend!=0 );
  model.rp = rp;
  model.dot = dot;
................................................................................
    basisend = &cfp->bp;
    Configtable_insert(cfp);
  }
  return cfp;
}

/* Compute the closure of the configuration list */
void Configlist_closure(lemp)
struct lemon *lemp;
{
  struct config *cfp, *newcfp;
  struct rule *rp, *newrp;
  struct symbol *sp, *xsp;
  int i, dot;

  assert( currentend!=0 );
................................................................................
  old = basis;
  basis = 0;
  basisend = 0;
  return old;
}

/* Free all elements of the given configuration list */
void Configlist_eat(cfp)
struct config *cfp;
{
  struct config *nextcfp;
  for(; cfp; cfp=nextcfp){
    nextcfp = cfp->next;
    assert( cfp->fplp==0 );
    assert( cfp->bplp==0 );
    if( cfp->fws ) SetFree(cfp->fws);
................................................................................
  return;
}
/***************** From the file "error.c" *********************************/
/*
** Code for printing error message.
*/

/* Find a good place to break "msg" so that its length is at least "min"
** but no more than "max".  Make the point as close to max as possible.
*/
static int findbreak(msg,min,max)
char *msg;
int min;
int max;
{
  int i,spot;
  char c;
  for(i=spot=min; i<=max; i++){
    c = msg[i];
    if( c=='\t' ) msg[i] = ' ';
    if( c=='\n' ){ msg[i] = ' '; spot = i; break; }
    if( c==0 ){ spot = i; break; }
    if( c=='-' && i<max-1 ) spot = i+1;
    if( c==' ' ) spot = i;
  }
  return spot;
}

/*
** The error message is split across multiple lines if necessary.  The
** splits occur at a space, if there is a space available near the end
** of the line.
*/
#define ERRMSGSIZE  10000 /* Hope this is big enough.  No way to error check */
#define LINEWIDTH      79 /* Max width of any output line */
#define PREFIXLIMIT    30 /* Max width of the prefix on each line */
void ErrorMsg(const char *filename, int lineno, const char *format, ...){
  char errmsg[ERRMSGSIZE];
  char prefix[PREFIXLIMIT+10];
  int errmsgsize;
  int prefixsize;
  int availablewidth;
  va_list ap;
  int end, restart, base;


  va_start(ap, format);
  /* Prepare a prefix to be prepended to every output line */
  if( lineno>0 ){
    sprintf(prefix,"%.*s:%d: ",PREFIXLIMIT-10,filename,lineno);
  }else{
    sprintf(prefix,"%.*s: ",PREFIXLIMIT-10,filename);
  }
  prefixsize = lemonStrlen(prefix);
  availablewidth = LINEWIDTH - prefixsize;

  /* Generate the error message */
  vsprintf(errmsg,format,ap);
  va_end(ap);
  errmsgsize = lemonStrlen(errmsg);
  /* Remove trailing '\n's from the error message. */
  while( errmsgsize>0 && errmsg[errmsgsize-1]=='\n' ){
     errmsg[--errmsgsize] = 0;
  }

  /* Print the error message */
  base = 0;
  while( errmsg[base]!=0 ){
    end = restart = findbreak(&errmsg[base],0,availablewidth);
    restart += base;
    while( errmsg[restart]==' ' ) restart++;
    fprintf(stdout,"%s%.*s\n",prefix,end,&errmsg[base]);
    base = restart;
  }

}
/**************** From the file "main.c" ************************************/
/*
** Main program file for the LEMON parser generator.
*/

/* Report an out-of-memory condition and abort.  This function
................................................................................

/* This routine is called with the argument to each -D command-line option.
** Add the macro defined to the azDefine array.
*/
static void handle_D_option(char *z){
  char **paz;
  nDefine++;
  azDefine = realloc(azDefine, sizeof(azDefine[0])*nDefine);
  if( azDefine==0 ){
    fprintf(stderr,"out of memory\n");
    exit(1);
  }
  paz = &azDefine[nDefine-1];
  *paz = malloc( lemonStrlen(z)+1 );
  if( *paz==0 ){
    fprintf(stderr,"out of memory\n");
    exit(1);
  }
  strcpy(*paz, z);
  for(z=*paz; *z && *z!='='; z++){}
  *z = 0;
}










/* The main program.  Parse the command line and do it... */
int main(argc,argv)
int argc;
char **argv;
{
  static int version = 0;
  static int rpflag = 0;
  static int basisflag = 0;
  static int compress = 0;
  static int quiet = 0;
  static int statistics = 0;
  static int mhflag = 0;
  static int nolinenosflag = 0;
  static struct s_options options[] = {
    {OPT_FLAG, "b", (char*)&basisflag, "Print only the basis in report."},
    {OPT_FLAG, "c", (char*)&compress, "Don't compress the action table."},
    {OPT_FSTR, "D", (char*)handle_D_option, "Define an %ifdef macro."},

    {OPT_FLAG, "g", (char*)&rpflag, "Print grammar without actions."},
    {OPT_FLAG, "m", (char*)&mhflag, "Output a makeheaders compatible file."},
    {OPT_FLAG, "l", (char*)&nolinenosflag, "Do not print #line statements."},
    {OPT_FLAG, "q", (char*)&quiet, "(Quiet) Don't print the report file."},
    {OPT_FLAG, "s", (char*)&statistics,
                                   "Print parser stats to standard output."},
    {OPT_FLAG, "x", (char*)&version, "Print the version number."},
    {OPT_FLAG,0,0,0}
  };
  int i;

  struct lemon lem;



  OptInit(argv,options,stderr);
  if( version ){
     printf("Lemon version 1.0\n");
     exit(0); 
  }
  if( OptNArgs()!=1 ){
................................................................................
  }

  /* Count and index the symbols of the grammar */
  lem.nsymbol = Symbol_count();
  Symbol_new("{default}");
  lem.symbols = Symbol_arrayof();
  for(i=0; i<=lem.nsymbol; i++) lem.symbols[i]->index = i;
  qsort(lem.symbols,lem.nsymbol+1,sizeof(struct symbol*),
        (int(*)())Symbolcmpp);
  for(i=0; i<=lem.nsymbol; i++) lem.symbols[i]->index = i;
  for(i=1; isupper(lem.symbols[i]->name[0]); i++);
  lem.nterminal = i;

  /* Generate a reprint of the grammar, if requested on the command line */
  if( rpflag ){
    Reprint(&lem);
................................................................................
  }
  if( statistics ){
    printf("Parser statistics: %d terminals, %d nonterminals, %d rules\n",
      lem.nterminal, lem.nsymbol - lem.nterminal, lem.nrule);
    printf("                   %d states, %d parser table entries, %d conflicts\n",
      lem.nstate, lem.tablesize, lem.nconflict);
  }
  if( lem.nconflict ){
    fprintf(stderr,"%d parsing conflicts.\n",lem.nconflict);
  }
  exit(lem.errorcnt + lem.nconflict);

  return (lem.errorcnt + lem.nconflict);




}
/******************** From the file "msort.c" *******************************/
/*
** A generic merge-sort program.
**
** USAGE:
** Let "ptr" be a pointer to some structure which is at the head of
................................................................................

#define ISOPT(X) ((X)[0]=='-'||(X)[0]=='+'||strchr((X),'=')!=0)

/*
** Print the command line with a carrot pointing to the k-th character
** of the n-th field.
*/
static void errline(n,k,err)
int n;
int k;
FILE *err;
{
  int spcnt, i;
  if( argv[0] ) fprintf(err,"%s",argv[0]);
  spcnt = lemonStrlen(argv[0]) + 1;
  for(i=1; i<n && argv[i]; i++){
    fprintf(err," %s",argv[i]);
    spcnt += lemonStrlen(argv[i])+1;
................................................................................
  }
}

/*
** Return the index of the N-th non-switch argument.  Return -1
** if N is out of range.
*/
static int argindex(n)
int n;
{
  int i;
  int dashdash = 0;
  if( argv!=0 && *argv!=0 ){
    for(i=1; argv[i]; i++){
      if( dashdash || !ISOPT(argv[i]) ){
        if( n==0 ) return i;
................................................................................
}

static char emsg[] = "Command line syntax error: ";

/*
** Process a flag command line argument.
*/
static int handleflags(i,err)
int i;
FILE *err;
{
  int v;
  int errcnt = 0;
  int j;
  for(j=0; op[j].label; j++){
    if( strncmp(&argv[i][1],op[j].label,lemonStrlen(op[j].label))==0 ) break;
  }
................................................................................
      fprintf(err,"%sundefined option.\n",emsg);
      errline(i,1,err);
    }
    errcnt++;
  }else if( op[j].type==OPT_FLAG ){
    *((int*)op[j].arg) = v;
  }else if( op[j].type==OPT_FFLAG ){
    (*(void(*)())(op[j].arg))(v);
  }else if( op[j].type==OPT_FSTR ){
    (*(void(*)())(op[j].arg))(&argv[i][2]);
  }else{
    if( err ){
      fprintf(err,"%smissing argument on switch.\n",emsg);
      errline(i,1,err);
    }
    errcnt++;
  }
  return errcnt;
}

/*
** Process a command line switch which has an argument.
*/
static int handleswitch(i,err)
int i;
FILE *err;
{
  int lv = 0;
  double dv = 0.0;
  char *sv = 0, *end;
  char *cp;
  int j;
  int errcnt = 0;
................................................................................
      case OPT_FLAG:
      case OPT_FFLAG:
        break;
      case OPT_DBL:
        *(double*)(op[j].arg) = dv;
        break;
      case OPT_FDBL:
        (*(void(*)())(op[j].arg))(dv);
        break;
      case OPT_INT:
        *(int*)(op[j].arg) = lv;
        break;
      case OPT_FINT:
        (*(void(*)())(op[j].arg))((int)lv);
        break;
      case OPT_STR:
        *(char**)(op[j].arg) = sv;
        break;
      case OPT_FSTR:
        (*(void(*)())(op[j].arg))(sv);
        break;
    }
  }
  return errcnt;
}

int OptInit(a,o,err)
char **a;
struct s_options *o;
FILE *err;
{
  int errcnt = 0;
  argv = a;
  op = o;
  errstream = err;
  if( argv && *argv && op ){
    int i;
................................................................................
      if( dashdash || !ISOPT(argv[i]) ) cnt++;
      if( strcmp(argv[i],"--")==0 ) dashdash = 1;
    }
  }
  return cnt;
}

char *OptArg(n)
int n;
{
  int i;
  i = argindex(n);
  return i>=0 ? argv[i] : 0;
}

void OptErr(n)
int n;
{
  int i;
  i = argindex(n);
  if( i>=0 ) errline(i,0,errstream);
}

void OptPrint(){
................................................................................
}
/*********************** From the file "parse.c" ****************************/
/*
** Input file parser for the LEMON parser generator.
*/

/* The state of the parser */






















struct pstate {
  char *filename;       /* Name of the input file */
  int tokenlineno;      /* Linenumber at which current token starts */
  int errorcnt;         /* Number of errors so far */
  char *tokenstart;     /* Text of current token */
  struct lemon *gp;     /* Global state vector */
  enum e_state {
    INITIALIZE,
    WAITING_FOR_DECL_OR_RULE,
    WAITING_FOR_DECL_KEYWORD,
    WAITING_FOR_DECL_ARG,
    WAITING_FOR_PRECEDENCE_SYMBOL,
    WAITING_FOR_ARROW,
    IN_RHS,
    LHS_ALIAS_1,
    LHS_ALIAS_2,
    LHS_ALIAS_3,
    RHS_ALIAS_1,
    RHS_ALIAS_2,
    PRECEDENCE_MARK_1,
    PRECEDENCE_MARK_2,
    RESYNC_AFTER_RULE_ERROR,
    RESYNC_AFTER_DECL_ERROR,
    WAITING_FOR_DESTRUCTOR_SYMBOL,
    WAITING_FOR_DATATYPE_SYMBOL,
    WAITING_FOR_FALLBACK_ID,
    WAITING_FOR_WILDCARD_ID
  } state;                   /* The state of the parser */
  struct symbol *fallback;   /* The fallback token */
  struct symbol *lhs;        /* Left-hand side of current rule */
  char *lhsalias;            /* Alias for the LHS */
  int nrhs;                  /* Number of right-hand side symbols seen */
  struct symbol *rhs[MAXRHS];  /* RHS symbols */
  char *alias[MAXRHS];       /* Aliases for each RHS symbol (or NULL) */
  struct rule *prevrule;     /* Previous rule parsed */
  char *declkeyword;         /* Keyword of a declaration */
  char **declargslot;        /* Where the declaration argument should be put */
  int insertLineMacro;       /* Add #line before declaration insert */
  int *decllinenoslot;       /* Where to write declaration line number */
  enum e_assoc declassoc;    /* Assign this association to decl arguments */
  int preccounter;           /* Assign this precedence to decl arguments */
  struct rule *firstrule;    /* Pointer to first rule in the grammar */
  struct rule *lastrule;     /* Pointer to the most recently parsed rule */
};

/* Parse a single token */
static void parseonetoken(psp)
struct pstate *psp;
{
  char *x;
  x = Strsafe(psp->tokenstart);     /* Save the token permanently */
#if 0
  printf("%s:%d: Token=[%s] state=%d\n",psp->filename,psp->tokenlineno,
    x,psp->state);
#endif
  switch( psp->state ){
    case INITIALIZE:
................................................................................
            "Can't allocate enough memory for this rule.");
          psp->errorcnt++;
          psp->prevrule = 0;
	}else{
          int i;
          rp->ruleline = psp->tokenlineno;
          rp->rhs = (struct symbol**)&rp[1];
          rp->rhsalias = (char**)&(rp->rhs[psp->nrhs]);
          for(i=0; i<psp->nrhs; i++){
            rp->rhs[i] = psp->rhs[i];
            rp->rhsalias[i] = psp->alias[i];
	  }
          rp->lhs = psp->lhs;
          rp->lhsalias = psp->lhsalias;
          rp->nrhs = psp->nrhs;
................................................................................
          psp->alias[psp->nrhs] = 0;
          psp->nrhs++;
	}
      }else if( (x[0]=='|' || x[0]=='/') && psp->nrhs>0 ){
        struct symbol *msp = psp->rhs[psp->nrhs-1];
        if( msp->type!=MULTITERMINAL ){
          struct symbol *origsp = msp;
          msp = calloc(1,sizeof(*msp));
          memset(msp, 0, sizeof(*msp));
          msp->type = MULTITERMINAL;
          msp->nsubsym = 1;
          msp->subsym = calloc(1,sizeof(struct symbol*));
          msp->subsym[0] = origsp;
          msp->name = origsp->name;
          psp->rhs[psp->nrhs-1] = msp;
        }
        msp->nsubsym++;

        msp->subsym = realloc(msp->subsym, sizeof(struct symbol*)*msp->nsubsym);
        msp->subsym[msp->nsubsym-1] = Symbol_new(&x[1]);
        if( islower(x[1]) || islower(msp->subsym[0]->name[0]) ){
          ErrorMsg(psp->filename,psp->tokenlineno,
            "Cannot form a compound containing a non-terminal");
          psp->errorcnt++;
        }
      }else if( x[0]=='(' && psp->nrhs>0 ){
................................................................................
        psp->errorcnt++;
        psp->state = RESYNC_AFTER_DECL_ERROR;
      }
      break;
    case WAITING_FOR_DESTRUCTOR_SYMBOL:
      if( !isalpha(x[0]) ){
        ErrorMsg(psp->filename,psp->tokenlineno,
          "Symbol name missing after %destructor keyword");
        psp->errorcnt++;
        psp->state = RESYNC_AFTER_DECL_ERROR;
      }else{
        struct symbol *sp = Symbol_new(x);
        psp->declargslot = &sp->destructor;
        psp->decllinenoslot = &sp->destLineno;
        psp->insertLineMacro = 1;
        psp->state = WAITING_FOR_DECL_ARG;
      }
      break;
    case WAITING_FOR_DATATYPE_SYMBOL:
      if( !isalpha(x[0]) ){
        ErrorMsg(psp->filename,psp->tokenlineno,
          "Symbol name missing after %destructor keyword");
        psp->errorcnt++;
        psp->state = RESYNC_AFTER_DECL_ERROR;
      }else{
        struct symbol *sp = Symbol_new(x);









        psp->declargslot = &sp->datatype;
        psp->insertLineMacro = 0;
        psp->state = WAITING_FOR_DECL_ARG;

      }
      break;
    case WAITING_FOR_PRECEDENCE_SYMBOL:
      if( x[0]=='.' ){
        psp->state = WAITING_FOR_DECL_OR_RULE;
      }else if( isupper(x[0]) ){
        struct symbol *sp;
................................................................................
        ErrorMsg(psp->filename,psp->tokenlineno,
          "Can't assign a precedence to \"%s\".",x);
        psp->errorcnt++;
      }
      break;
    case WAITING_FOR_DECL_ARG:
      if( x[0]=='{' || x[0]=='\"' || isalnum(x[0]) ){
        char *zOld, *zNew, *zBuf, *z;

        int nOld, n, nLine, nNew, nBack;
        int addLineMacro;
        char zLine[50];
        zNew = x;
        if( zNew[0]=='"' || zNew[0]=='{' ) zNew++;
        nNew = lemonStrlen(zNew);
        if( *psp->declargslot ){
................................................................................
          for(z=psp->filename, nBack=0; *z; z++){
            if( *z=='\\' ) nBack++;
          }
          sprintf(zLine, "#line %d ", psp->tokenlineno);
          nLine = lemonStrlen(zLine);
          n += nLine + lemonStrlen(psp->filename) + nBack;
        }
        *psp->declargslot = zBuf = realloc(*psp->declargslot, n);
        zBuf += nOld;
        if( addLineMacro ){
          if( nOld && zBuf[-1]!='\n' ){
            *(zBuf++) = '\n';
          }
          memcpy(zBuf, zLine, nLine);
          zBuf += nLine;
          *(zBuf++) = '"';
................................................................................
}

/* In spite of its name, this function is really a scanner.  It read
** in the entire input file (all at once) then tokenizes it.  Each
** token is passed to the function "parseonetoken" which builds all
** the appropriate data structures in the global state vector "gp".
*/
void Parse(gp)
struct lemon *gp;
{
  struct pstate ps;
  FILE *fp;
  char *filebuf;
  int filesize;
  int lineno;
  int c;
................................................................................
** Routines processing configuration follow-set propagation links
** in the LEMON parser generator.
*/
static struct plink *plink_freelist = 0;

/* Allocate a new plink */
struct plink *Plink_new(){
  struct plink *new;

  if( plink_freelist==0 ){
    int i;
    int amt = 100;
    plink_freelist = (struct plink *)calloc( amt, sizeof(struct plink) );
    if( plink_freelist==0 ){
      fprintf(stderr,
      "Unable to allocate memory for a new follow-set propagation link.\n");
      exit(1);
    }
    for(i=0; i<amt-1; i++) plink_freelist[i].next = &plink_freelist[i+1];
    plink_freelist[amt-1].next = 0;
  }
  new = plink_freelist;
  plink_freelist = plink_freelist->next;
  return new;
}

/* Add a plink to a plink list */
void Plink_add(plpp,cfp)
struct plink **plpp;
struct config *cfp;
{
  struct plink *new;
  new = Plink_new();
  new->next = *plpp;
  *plpp = new;
  new->cfp = cfp;
}

/* Transfer every plink on the list "from" to the list "to" */
void Plink_copy(to,from)
struct plink **to;
struct plink *from;
{
  struct plink *nextpl;
  while( from ){
    nextpl = from->next;
    from->next = *to;
    *to = from;
    from = nextpl;
  }
}

/* Delete every plink on the list */
void Plink_delete(plp)
struct plink *plp;
{
  struct plink *nextpl;

  while( plp ){
    nextpl = plp->next;
    plp->next = plink_freelist;
    plink_freelist = plp;
................................................................................
** Procedures for generating reports and tables in the LEMON parser generator.
*/

/* Generate a filename with the given suffix.  Space to hold the
** name comes from malloc() and must be freed by the calling
** function.
*/
PRIVATE char *file_makename(lemp,suffix)
struct lemon *lemp;
char *suffix;
{
  char *name;
  char *cp;

  name = malloc( lemonStrlen(lemp->filename) + lemonStrlen(suffix) + 5 );
  if( name==0 ){
    fprintf(stderr,"Can't allocate space for a filename.\n");
    exit(1);
  }
  strcpy(name,lemp->filename);
  cp = strrchr(name,'.');
  if( cp ) *cp = 0;
................................................................................
  strcat(name,suffix);
  return name;
}

/* Open a file with a name based on the name of the input file,
** but with a different (specified) suffix, and return a pointer
** to the stream */
PRIVATE FILE *file_open(lemp,suffix,mode)
struct lemon *lemp;
char *suffix;
char *mode;
{

  FILE *fp;

  if( lemp->outname ) free(lemp->outname);
  lemp->outname = file_makename(lemp, suffix);
  fp = fopen(lemp->outname,mode);
  if( fp==0 && *mode=='w' ){
    fprintf(stderr,"Can't open file \"%s\".\n",lemp->outname);
    lemp->errorcnt++;
    return 0;
  }


















  return fp;
}

/* Duplicate the input file without comments and without actions 
** on rules */
void Reprint(lemp)
struct lemon *lemp;
{
  struct rule *rp;
  struct symbol *sp;
  int i, j, maxlen, len, ncolumns, skip;
  printf("// Reprint of input file \"%s\".\n// Symbols:\n",lemp->filename);
  maxlen = 10;
  for(i=0; i<lemp->nsymbol; i++){
................................................................................
    printf(".");
    if( rp->precsym ) printf(" [%s]",rp->precsym->name);
    /* if( rp->code ) printf("\n    %s",rp->code); */
    printf("\n");
  }
}

void ConfigPrint(fp,cfp)
FILE *fp;
struct config *cfp;
{
  struct rule *rp;
  struct symbol *sp;
  int i, j;
  rp = cfp->rp;
  fprintf(fp,"%s ::=",rp->lhs->name);
  for(i=0; i<=rp->nrhs; i++){
................................................................................
      result = 0;
      break;
  }
  return result;
}

/* Generate the "y.output" log file */
void ReportOutput(lemp)
struct lemon *lemp;
{
  int i;
  struct state *stp;
  struct config *cfp;
  struct action *ap;
  FILE *fp;

................................................................................
  }
  fclose(fp);
  return;
}

/* Search for the file "name" which is in the same directory as
** the exacutable */
PRIVATE char *pathsearch(argv0,name,modemask)
char *argv0;
char *name;
int modemask;
{
  char *pathlist;
  char *path,*cp;
  char c;

#ifdef __WIN32__
  cp = strrchr(argv0,'\\');
#else
  cp = strrchr(argv0,'/');
................................................................................
  if( cp ){
    c = *cp;
    *cp = 0;
    path = (char *)malloc( lemonStrlen(argv0) + lemonStrlen(name) + 2 );
    if( path ) sprintf(path,"%s/%s",argv0,name);
    *cp = c;
  }else{
    extern char *getenv();
    pathlist = getenv("PATH");
    if( pathlist==0 ) pathlist = ".:/bin:/usr/bin";

    path = (char *)malloc( lemonStrlen(pathlist)+lemonStrlen(name)+2 );
    if( path!=0 ){


      while( *pathlist ){
        cp = strchr(pathlist,':');
        if( cp==0 ) cp = &pathlist[lemonStrlen(pathlist)];
        c = *cp;
        *cp = 0;
        sprintf(path,"%s/%s",pathlist,name);
        *cp = c;
        if( c==0 ) pathlist = "";
        else pathlist = &cp[1];
        if( access(path,modemask)==0 ) break;
      }

    }
  }
  return path;
}

/* Given an action, compute the integer value for that action
** which is to be put in the action table of the generated machine.
** Return negative if no action should be generated.
*/
PRIVATE int compute_action(lemp,ap)
struct lemon *lemp;
struct action *ap;
{
  int act;
  switch( ap->type ){
    case SHIFT:  act = ap->x.stp->statenum;            break;
    case REDUCE: act = ap->x.rp->index + lemp->nstate; break;
    case ERROR:  act = lemp->nstate + lemp->nrule;     break;
    case ACCEPT: act = lemp->nstate + lemp->nrule + 1; break;
................................................................................
/* The first function transfers data from "in" to "out" until
** a line is seen which begins with "%%".  The line number is
** tracked.
**
** if name!=0, then any word that begin with "Parse" is changed to
** begin with *name instead.
*/
PRIVATE void tplt_xfer(name,in,out,lineno)
char *name;
FILE *in;
FILE *out;
int *lineno;
{
  int i, iStart;
  char line[LINESIZE];
  while( fgets(line,LINESIZE,in) && (line[0]!='%' || line[1]!='%') ){
    (*lineno)++;
    iStart = 0;
    if( name ){
................................................................................
    }
    fprintf(out,"%s",&line[iStart]);
  }
}

/* The next function finds the template file and opens it, returning
** a pointer to the opened file. */
PRIVATE FILE *tplt_open(lemp)
struct lemon *lemp;
{
  static char templatename[] = "lempar.c";
  char buf[1000];
  FILE *in;
  char *tpltname;
  char *cp;


















  cp = strrchr(lemp->filename,'.');
  if( cp ){
    sprintf(buf,"%.*s.lt",(int)(cp-lemp->filename),lemp->filename);
  }else{
    sprintf(buf,"%s.lt",lemp->filename);
  }
................................................................................
    lemp->errorcnt++;
    return 0;
  }
  return in;
}

/* Print a #line directive line to the output file. */
PRIVATE void tplt_linedir(out,lineno,filename)
FILE *out;
int lineno;
char *filename;
{
  fprintf(out,"#line %d \"",lineno);
  while( *filename ){
    if( *filename == '\\' ) putc('\\',out);
    putc(*filename,out);
    filename++;
  }
  fprintf(out,"\"\n");
}

/* Print a string to the file and keep the linenumber up to date */
PRIVATE void tplt_print(out,lemp,str,lineno)
FILE *out;
struct lemon *lemp;
char *str;
int *lineno;
{
  if( str==0 ) return;
  while( *str ){
    putc(*str,out);
    if( *str=='\n' ) (*lineno)++;
    str++;
  }
................................................................................
  return;
}

/*
** The following routine emits code for the destructor for the
** symbol sp
*/
void emit_destructor_code(out,sp,lemp,lineno)
FILE *out;
struct symbol *sp;
struct lemon *lemp;
int *lineno;
{

 char *cp = 0;

 if( sp->type==TERMINAL ){
   cp = lemp->tokendest;
   if( cp==0 ) return;
   fprintf(out,"{\n"); (*lineno)++;
 }else if( sp->destructor ){
................................................................................
 fprintf(out,"}\n"); (*lineno)++;
 return;
}

/*
** Return TRUE (non-zero) if the given symbol has a destructor.
*/
int has_destructor(sp, lemp)
struct symbol *sp;
struct lemon *lemp;
{
  int ret;
  if( sp->type==TERMINAL ){
    ret = lemp->tokendest!=0;
  }else{
    ret = lemp->vardest!=0 || sp->destructor!=0;
  }
................................................................................
** n bytes of zText are stored.  If n==0 then all of zText up to the first
** \000 terminator is stored.  zText can contain up to two instances of
** %d.  The values of p1 and p2 are written into the first and second
** %d.
**
** If n==-1, then the previous character is overwritten.
*/
PRIVATE char *append_str(char *zText, int n, int p1, int p2){

  static char *z = 0;
  static int alloced = 0;
  static int used = 0;
  int c;
  char zInt[40];

  if( zText==0 ){
    used = 0;
    return z;
  }
  if( n<=0 ){
    if( n<0 ){
      used += n;
      assert( used>=0 );
    }
    n = lemonStrlen(zText);
  }
  if( n+sizeof(zInt)*2+used >= alloced ){
    alloced = n + sizeof(zInt)*2 + used + 200;
    z = realloc(z,  alloced);
  }
  if( z==0 ) return "";
  while( n-- > 0 ){
    c = *(zText++);
    if( c=='%' && n>0 && zText[0]=='d' ){
      sprintf(zInt, "%d", p1);
      p1 = p2;
      strcpy(&z[used], zInt);
      used += lemonStrlen(&z[used]);
................................................................................
  char lhsused = 0;    /* True if the LHS element has been used */
  char used[MAXRHS];   /* True for each RHS element which is used */

  for(i=0; i<rp->nrhs; i++) used[i] = 0;
  lhsused = 0;

  if( rp->code==0 ){

    rp->code = "\n";
    rp->line = rp->ruleline;
  }

  append_str(0,0,0,0);


  for(cp=rp->code; *cp; cp++){
    if( isalpha(*cp) && (cp==rp->code || (!isalnum(cp[-1]) && cp[-1]!='_')) ){
      char saved;
      for(xp= &cp[1]; isalnum(*xp) || *xp=='_'; xp++);
      saved = *xp;
      *xp = 0;
      if( rp->lhsalias && strcmp(cp,rp->lhsalias)==0 ){
        append_str("yygotominor.yy%d",0,rp->lhs->dtnum,0);
................................................................................
  }
}

/* 
** Generate code which executes when the rule "rp" is reduced.  Write
** the code to "out".  Make sure lineno stays up-to-date.
*/
PRIVATE void emit_code(out,rp,lemp,lineno)
FILE *out;
struct rule *rp;
struct lemon *lemp;
int *lineno;
{

 char *cp;

 /* Generate code to do the reduce action */
 if( rp->code ){
   if (!lemp->nolinenosflag) { (*lineno)++; tplt_linedir(out,rp->line,lemp->filename); }
   fprintf(out,"{%s",rp->code);
   for(cp=rp->code; *cp; cp++){
     if( *cp=='\n' ) (*lineno)++;
................................................................................
/*
** Print the definition of the union used for the parser's data stack.
** This union contains fields for every possible data type for tokens
** and nonterminals.  In the process of computing and printing this
** union, also set the ".dtnum" field of every terminal and nonterminal
** symbol.
*/
void print_stack_union(out,lemp,plineno,mhflag)
FILE *out;                  /* The output stream */
struct lemon *lemp;         /* The main info structure for this parser */
int *plineno;               /* Pointer to the line number */
int mhflag;                 /* True if generating makeheaders output */
{

  int lineno = *plineno;    /* The line number of the output */
  char **types;             /* A hash table of datatypes */
  int arraysize;            /* Size of the "types" array */
  int maxdtlength;          /* Maximum length of any ".datatype" field. */
  char *stddt;              /* Standardized name for a datatype */
  int i,j;                  /* Loop counters */
  int hash;                 /* For hashing the name of a type */
  char *name;               /* Name of the parser */

  /* Allocate and initialize types[] and allocate stddt[] */
  arraysize = lemp->nsymbol * 2;
  types = (char**)calloc( arraysize, sizeof(char*) );
  for(i=0; i<arraysize; i++) types[i] = 0;
  maxdtlength = 0;
  if( lemp->vartype ){
................................................................................
      }
    }
  }
}


/* Generate C source code for the parser */
void ReportTable(lemp, mhflag)
struct lemon *lemp;
int mhflag;     /* Output in makeheaders format if true */
{

  FILE *out, *in;
  char line[LINESIZE];
  int  lineno;
  struct state *stp;
  struct action *ap;
  struct rule *rp;
  struct acttab *pActtab;
  int i, j, k, n;
  char *name;
  int mnTknOfst, mxTknOfst;
  int mnNtOfst, mxNtOfst;
  struct axset *ax;

  in = tplt_open(lemp);
  if( in==0 ) return;
  out = file_open(lemp,".c","wb");
................................................................................
    fprintf(out,"#include \"%s\"\n", name); lineno++;
    free(name);
  }
  tplt_xfer(lemp->name,in,out,&lineno);

  /* Generate #defines for all tokens */
  if( mhflag ){
    char *prefix;
    fprintf(out,"#if INTERFACE\n"); lineno++;
    if( lemp->tokenprefix ) prefix = lemp->tokenprefix;
    else                    prefix = "";
    for(i=1; i<lemp->nterminal; i++){
      fprintf(out,"#define %s%-30s %2d\n",prefix,lemp->symbols[i]->name,i);
      lineno++;
    }
................................................................................
  **                     shifting terminals.
  **  yy_reduce_ofst[]   For each state, the offset into yy_action for
  **                     shifting non-terminals after a reduce.
  **  yy_default[]       Default action for each state.
  */

  /* Compute the actions on all states and count them up */
  ax = calloc(lemp->nstate*2, sizeof(ax[0]));
  if( ax==0 ){
    fprintf(stderr,"malloc failed\n");
    exit(1);
  }
  for(i=0; i<lemp->nstate; i++){
    stp = lemp->sorted[i];
    ax[i*2].stp = stp;
................................................................................

  fclose(in);
  fclose(out);
  return;
}

/* Generate a header file for the parser */
void ReportHeader(lemp)
struct lemon *lemp;
{
  FILE *out, *in;
  char *prefix;
  char line[LINESIZE];
  char pattern[LINESIZE];
  int i;

  if( lemp->tokenprefix ) prefix = lemp->tokenprefix;
  else                    prefix = "";
  in = file_open(lemp,".h","rb");
................................................................................
/* Reduce the size of the action tables, if possible, by making use
** of defaults.
**
** In this version, we take the most frequent REDUCE action and make
** it the default.  Except, there is no default if the wildcard token
** is a possible look-ahead.
*/
void CompressTables(lemp)
struct lemon *lemp;
{
  struct state *stp;
  struct action *ap, *ap2;
  struct rule *rp, *rp2, *rbest;
  int nbest, n;
  int i;
  int usesWildcard;
................................................................................
}


/*
** Renumber and resort states so that states with fewer choices
** occur at the end.  Except, keep state 0 as the first state.
*/
void ResortStates(lemp)
struct lemon *lemp;
{
  int i;
  struct state *stp;
  struct action *ap;

  for(i=0; i<lemp->nstate; i++){
    stp = lemp->sorted[i];
................................................................................
/*
** Set manipulation routines for the LEMON parser generator.
*/

static int size = 0;

/* Set the set size */
void SetSize(n)
int n;
{
  size = n+1;
}

/* Allocate a new set */
char *SetNew(){
  char *s;
................................................................................
    extern void memory_error();
    memory_error();
  }
  return s;
}

/* Deallocate a set */
void SetFree(s)
char *s;
{
  free(s);
}

/* Add a new element to the set.  Return TRUE if the element was added
** and FALSE if it was already there. */
int SetAdd(s,e)
char *s;
int e;
{
  int rv;
  assert( e>=0 && e<size );
  rv = s[e];
  s[e] = 1;
  return !rv;
}

/* Add every element of s2 to s1.  Return TRUE if s1 changes. */
int SetUnion(s1,s2)
char *s1;
char *s2;
{
  int i, progress;
  progress = 0;
  for(i=0; i<size; i++){
    if( s2[i]==0 ) continue;
    if( s1[i]==0 ){
      progress = 1;
................................................................................
** Do not edit this file!  Instead, edit the specification
** file, then rerun aagen.
*/
/*
** Code for processing tables in the LEMON parser generator.
*/

PRIVATE int strhash(x)
char *x;
{
  int h = 0;
  while( *x) h = h*13 + *(x++);
  return h;
}

/* Works like strdup, sort of.  Save a string in malloced memory, but
** keep strings in a table so that the same string is not in more
** than one place.
*/
char *Strsafe(y)
char *y;
{
  char *z;


  if( y==0 ) return 0;
  z = Strsafe_find(y);
  if( z==0 && (z=malloc( lemonStrlen(y)+1 ))!=0 ){
    strcpy(z,y);

    Strsafe_insert(z);
  }
  MemoryCheck(z);
  return z;
}

/* There is one instance of the following structure for each
................................................................................
  struct s_x1node **ht;  /* Hash table for lookups */
};

/* There is one instance of this structure for every data element
** in an associative array of type "x1".
*/
typedef struct s_x1node {
  char *data;                  /* The data */
  struct s_x1node *next;   /* Next entry with the same hash */
  struct s_x1node **from;  /* Previous link */
} x1node;

/* There is only one instance of the array, which is the following */
static struct s_x1 *x1a;

................................................................................
      x1a->ht = (x1node**)&(x1a->tbl[1024]);
      for(i=0; i<1024; i++) x1a->ht[i] = 0;
    }
  }
}
/* Insert a new record into the array.  Return TRUE if successful.
** Prior data with the same key is NOT overwritten */
int Strsafe_insert(data)
char *data;
{
  x1node *np;
  int h;
  int ph;

  if( x1a==0 ) return 0;
  ph = strhash(data);
................................................................................
  x1a->ht[h] = np;
  np->from = &(x1a->ht[h]);
  return 1;
}

/* Return a pointer to data assigned to the given key.  Return NULL
** if no such key. */
char *Strsafe_find(key)
char *key;
{
  int h;
  x1node *np;

  if( x1a==0 ) return 0;
  h = strhash(key) & (x1a->size-1);
  np = x1a->ht[h];
................................................................................
  }
  return np ? np->data : 0;
}

/* Return a pointer to the (terminal or nonterminal) symbol "x".
** Create a new symbol if this is the first time "x" has been seen.
*/
struct symbol *Symbol_new(x)
char *x;
{
  struct symbol *sp;

  sp = Symbol_find(x);
  if( sp==0 ){
    sp = (struct symbol *)calloc(1, sizeof(struct symbol) );
    MemoryCheck(sp);
................................................................................
** must sort before symbols that begin with lower case letters
** (non-terminals).  Other than that, the order does not matter.
**
** We find experimentally that leaving the symbols in their original
** order (the order they appeared in the grammar file) gives the
** smallest parser tables in SQLite.
*/
int Symbolcmpp(struct symbol **a, struct symbol **b){



  int i1 = (**a).index + 10000000*((**a).name[0]>'Z');
  int i2 = (**b).index + 10000000*((**b).name[0]>'Z');
  assert( i1!=i2 || strcmp((**a).name,(**b).name)==0 );
  return i1-i2;
}

/* There is one instance of the following structure for each
................................................................................
  struct s_x2node **ht;  /* Hash table for lookups */
};

/* There is one instance of this structure for every data element
** in an associative array of type "x2".
*/
typedef struct s_x2node {
  struct symbol *data;                  /* The data */
  char *key;                   /* The key */
  struct s_x2node *next;   /* Next entry with the same hash */
  struct s_x2node **from;  /* Previous link */
} x2node;

/* There is only one instance of the array, which is the following */
static struct s_x2 *x2a;

................................................................................
      x2a->ht = (x2node**)&(x2a->tbl[128]);
      for(i=0; i<128; i++) x2a->ht[i] = 0;
    }
  }
}
/* Insert a new record into the array.  Return TRUE if successful.
** Prior data with the same key is NOT overwritten */
int Symbol_insert(data,key)
struct symbol *data;
char *key;
{
  x2node *np;
  int h;
  int ph;

  if( x2a==0 ) return 0;
  ph = strhash(key);
................................................................................
  x2a->ht[h] = np;
  np->from = &(x2a->ht[h]);
  return 1;
}

/* Return a pointer to data assigned to the given key.  Return NULL
** if no such key. */
struct symbol *Symbol_find(key)
char *key;
{
  int h;
  x2node *np;

  if( x2a==0 ) return 0;
  h = strhash(key) & (x2a->size-1);
  np = x2a->ht[h];
................................................................................
    if( strcmp(np->key,key)==0 ) break;
    np = np->next;
  }
  return np ? np->data : 0;
}

/* Return the n-th data.  Return NULL if n is out of range. */
struct symbol *Symbol_Nth(n)
int n;
{
  struct symbol *data;
  if( x2a && n>0 && n<=x2a->count ){
    data = x2a->tbl[n-1].data;
  }else{
    data = 0;
  }
................................................................................
  if( array ){
    for(i=0; i<size; i++) array[i] = x2a->tbl[i].data;
  }
  return array;
}

/* Compare two configurations */
int Configcmp(a,b)

struct config *a;
struct config *b;
{
  int x;
  x = a->rp->index - b->rp->index;
  if( x==0 ) x = a->dot - b->dot;
  return x;
}

/* Compare two states */
PRIVATE int statecmp(a,b)
struct config *a;
struct config *b;
{
  int rc;
  for(rc=0; rc==0 && a && b;  a=a->bp, b=b->bp){
    rc = a->rp->index - b->rp->index;
    if( rc==0 ) rc = a->dot - b->dot;
  }
  if( rc==0 ){
................................................................................
    if( a ) rc = 1;
    if( b ) rc = -1;
  }
  return rc;
}

/* Hash a state */
PRIVATE int statehash(a)
struct config *a;
{
  int h=0;
  while( a ){
    h = h*571 + a->rp->index*37 + a->dot;
    a = a->bp;
  }
  return h;
}

/* Allocate a new state structure */
struct state *State_new()
{
  struct state *new;
  new = (struct state *)calloc(1, sizeof(struct state) );
  MemoryCheck(new);
  return new;
}

/* There is one instance of the following structure for each
** associative array of type "x3".
*/
struct s_x3 {
  int size;               /* The number of available slots. */
................................................................................
      x3a->ht = (x3node**)&(x3a->tbl[128]);
      for(i=0; i<128; i++) x3a->ht[i] = 0;
    }
  }
}
/* Insert a new record into the array.  Return TRUE if successful.
** Prior data with the same key is NOT overwritten */
int State_insert(data,key)
struct state *data;
struct config *key;
{
  x3node *np;
  int h;
  int ph;

  if( x3a==0 ) return 0;
  ph = statehash(key);
................................................................................
  x3a->ht[h] = np;
  np->from = &(x3a->ht[h]);
  return 1;
}

/* Return a pointer to data assigned to the given key.  Return NULL
** if no such key. */
struct state *State_find(key)
struct config *key;
{
  int h;
  x3node *np;

  if( x3a==0 ) return 0;
  h = statehash(key) & (x3a->size-1);
  np = x3a->ht[h];
................................................................................
  if( array ){
    for(i=0; i<size; i++) array[i] = x3a->tbl[i].data;
  }
  return array;
}

/* Hash a configuration */
PRIVATE int confighash(a)
struct config *a;
{
  int h=0;
  h = h*571 + a->rp->index*37 + a->dot;
  return h;
}

/* There is one instance of the following structure for each
................................................................................
      x4a->ht = (x4node**)&(x4a->tbl[64]);
      for(i=0; i<64; i++) x4a->ht[i] = 0;
    }
  }
}
/* Insert a new record into the array.  Return TRUE if successful.
** Prior data with the same key is NOT overwritten */
int Configtable_insert(data)
struct config *data;
{
  x4node *np;
  int h;
  int ph;

  if( x4a==0 ) return 0;
  ph = confighash(data);
  h = ph & (x4a->size-1);
  np = x4a->ht[h];
  while( np ){
    if( Configcmp(np->data,data)==0 ){
      /* An existing entry with the same key is found. */
      /* Fail because overwrite is not allows. */
      return 0;
    }
    np = np->next;
  }
  if( x4a->count>=x4a->size ){
................................................................................
  x4a->ht[h] = np;
  np->from = &(x4a->ht[h]);
  return 1;
}

/* Return a pointer to data assigned to the given key.  Return NULL
** if no such key. */
struct config *Configtable_find(key)
struct config *key;
{
  int h;
  x4node *np;

  if( x4a==0 ) return 0;
  h = confighash(key) & (x4a->size-1);
  np = x4a->ht[h];
  while( np ){
    if( Configcmp(np->data,key)==0 ) break;
    np = np->next;
  }
  return np ? np->data : 0;
}

/* Remove all data from the table.  Pass each data to the function "f"
** as it is removed.  ("f" may be null to avoid this step.) */
void Configtable_clear(f)
int(*f)(/* struct config * */);
{
  int i;
  if( x4a==0 || x4a->count==0 ) return;
  if( f ) for(i=0; i<x4a->count; i++) (*f)(x4a->tbl[i].data);
  for(i=0; i<x4a->size; i++) x4a->ht[i] = 0;
  x4a->count = 0;
  return;
}







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29
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135
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147
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150
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...
178
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217
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237











238
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...
317
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324
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389
...
409
410
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419
420

421
422
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436
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438
...
452
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457
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459
460
461
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463
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467


468
469
470
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472
473
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475
...
488
489
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500
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502
...
505
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519
...
547
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549
550
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561
...
645
646
647
648
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650
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652

653
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659
...
674
675
676
677
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679
680
681

682
683
684
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686
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688
...
735
736
737
738
739
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741
742

743
744
745
746
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748
749
750
...
794
795
796
797
798
799
800
801
802

803
804
805
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807
808
809
...
839
840
841
842
843
844
845

846

847
848
849
850
851
852
853
...
855
856
857
858
859
860
861
862


863
864
865
866
867
868
869
870
871
872
873
...
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
...
908
909
910
911
912
913
914

915
916
917
918
919
920
921
922
...
943
944
945
946
947
948
949
950

951
952
953
954
955
956
957
...
975
976
977
978
979
980
981
982
983
984
985

986
987
988
989
990
991
992
993
....
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072

1073
1074
1075
1076
1077
1078
1079
1080
....
1139
1140
1141
1142
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1152
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1157
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1159
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1161
1162
1163
1164

1165
1166
1167
1168
1169
1170
1171
....
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193

1194
1195
1196
1197
1198
1199
1200
1201
....
1211
1212
1213
1214
1215
1216
1217
1218


1219
1220
1221
1222
1223
1224
1225
....
1239
1240
1241
1242
1243
1244
1245
1246

1247
1248
1249
1250
1251
1252
1253
....
1318
1319
1320
1321
1322
1323
1324
1325

1326
1327
1328
1329
1330
1331
1332
....
1335
1336
1337
1338
1339
1340
1341





























1342





1343


1344
1345










1346
1347















1348
1349
1350
1351
1352
1353
1354
1355
....
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397


1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
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1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
....
1458
1459
1460
1461
1462
1463
1464
1465

1466
1467
1468
1469
1470
1471
1472
....
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525

1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
....
1658
1659
1660
1661
1662
1663
1664
1665



1666
1667
1668
1669
1670
1671
1672
....
1680
1681
1682
1683
1684
1685
1686
1687

1688
1689
1690
1691
1692
1693
1694
....
1701
1702
1703
1704
1705
1706
1707
1708


1709
1710
1711
1712
1713
1714
1715
....
1719
1720
1721
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1724
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1727
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1733
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1736
1737
1738
1739
1740
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1742


1743
1744
1745
1746
1747
1748
1749
....
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827


1828

1829
1830
1831
1832
1833
1834
1835
....
1858
1859
1860
1861
1862
1863
1864
1865

1866
1867
1868
1869
1870
1871
1872

1873
1874
1875
1876
1877
1878
1879
....
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961





















1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981

1982
1983
1984
1985
1986
1987
1988
1989
1990
....
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
....
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
....
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
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2296
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2301
2302
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2304
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2308
2309
2310
2311
2312
2313
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2316
2317
2318
2319
2320
2321
2322
....
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
....
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
....
2495
2496
2497
2498
2499
2500
2501

2502
2503
2504
2505
2506
2507
2508
2509
....
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675

2676

2677
2678
2679
2680
2681
2682
2683
2684
2685


2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698

2699
2700
2701
2702
2703
2704
2705
....
2711
2712
2713
2714
2715
2716
2717
2718


2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
....
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741

2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775

2776
2777
2778
2779
2780
2781
2782
2783
....
2814
2815
2816
2817
2818
2819
2820


2821
2822
2823
2824
2825
2826
2827
2828
....
2907
2908
2909
2910
2911
2912
2913

2914
2915
2916
2917
2918
2919
2920
2921
....
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984

2985
2986
2987
2988
2989
2990
2991
....
2993
2994
2995
2996
2997
2998
2999

3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028


3029
3030
3031
3032
3033
3034
3035
....
3044
3045
3046
3047
3048
3049
3050
3051




3052
3053
3054
3055
3056
3057
3058
....
3069
3070
3071
3072
3073
3074
3075
3076

3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
....
3123
3124
3125
3126
3127
3128
3129
3130



3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142




3143
3144
3145
3146
3147
3148
3149
....
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168

3169
3170
3171
3172
3173
3174
3175
3176
....
3200
3201
3202
3203
3204
3205
3206
3207


3208
3209
3210
3211
3212
3213
3214
....
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236

3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
....
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
....
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370

3371
3372
3373
3374
3375
3376
3377
3378
3379
....
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399

3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
....
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579

3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
....
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
....
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
....
4014
4015
4016
4017
4018
4019
4020

4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
....
4053
4054
4055
4056
4057
4058
4059
4060

4061
4062
4063
4064
4065
4066
4067
....
4137
4138
4139
4140
4141
4142
4143

4144
4145
4146
4147
4148
4149
4150
4151
....
4177
4178
4179
4180
4181
4182
4183
4184

4185
4186
4187
4188
4189
4190
4191
....
4194
4195
4196
4197
4198
4199
4200
4201

4202
4203
4204
4205
4206
4207
4208


4209
4210
4211
4212
4213
4214
4215
4216
4217
4218


4219
4220
4221
4222
4223
4224
4225
....
4237
4238
4239
4240
4241
4242
4243
4244

4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255

4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
....
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
....
4309
4310
4311
4312
4313
4314
4315
4316

4317
4318
4319
4320
4321
4322
4323
....
4365
4366
4367
4368
4369
4370
4371
4372

4373
4374
4375
4376
4377
4378
4379
....
4383
4384
4385
4386
4387
4388
4389
4390

4391
4392
4393
4394
4395
4396
4397
....
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
....
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
....
4475
4476
4477
4478
4479
4480
4481

4482

4483
4484
4485
4486
4487
4488
4489
....
4533
4534
4535
4536
4537
4538
4539
4540

4541
4542
4543
4544
4545
4546
4547
....
4549
4550
4551
4552
4553
4554
4555
4556

4557
4558
4559
4560
4561
4562
4563
....
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593

4594
4595
4596
4597
4598
4599
4600
4601


4602
4603
4604
4605
4606
4607
4608
....
4609
4610
4611
4612
4613
4614
4615
4616

4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
....
4674
4675
4676
4677
4678
4679
4680

4681

4682
4683
4684
4685
4686
4687
4688
....
4732
4733
4734
4735
4736
4737
4738
4739

4740
4741
4742
4743
4744
4745
4746
....
4764
4765
4766
4767
4768
4769
4770
4771

4772
4773
4774
4775
4776
4777
4778
....
4816
4817
4818
4819
4820
4821
4822
4823

4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
....
4872
4873
4874
4875
4876
4877
4878
4879

4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896

4897
4898
4899
4900
4901
4902
4903
4904
#define PRIVATE

#ifdef TEST
#define MAXRHS 5       /* Set low to exercise exception code */
#else
#define MAXRHS 1000
#endif

static const char **made_files = NULL;
static int made_files_count = 0;
static int successful_exit = 0;
static void LemonAtExit(void)
{
    /* if we failed, delete (most) files we made, to unconfuse build tools. */
    int i;
    for (i = 0; i < made_files_count; i++) {
        if (!successful_exit) {
            remove(made_files[i]);
        }
        free((void *) made_files[i]);
    }
    free(made_files);
    made_files_count = 0;
    made_files = NULL;
}

static char *msort(char*,char**,int(*)(const char*,const char*));

/*
** Compilers are getting increasingly pedantic about type conversions
** as C evolves ever closer to Ada....  To work around the latest problems
** we have to define the following variant of strlen().
*/
#define lemonStrlen(X)   ((int)strlen(X))

/* a few forward declarations... */
struct rule;
struct lemon;
struct action;

static struct action *Action_new(void);
static struct action *Action_sort(struct action *);

/********** From the file "build.h" ************************************/
void FindRulePrecedences();
void FindFirstSets();
void FindStates();
void FindLinks();
void FindFollowSets();
void FindActions();

/********* From the file "configlist.h" *********************************/
void Configlist_init(void);
struct config *Configlist_add(struct rule *, int);
struct config *Configlist_addbasis(struct rule *, int);
void Configlist_closure(struct lemon *);
void Configlist_sort(void);
void Configlist_sortbasis(void);
struct config *Configlist_return(void);
struct config *Configlist_basis(void);
void Configlist_eat(struct config *);
void Configlist_reset(void);

/********* From the file "error.h" ***************************************/
void ErrorMsg(const char *, int,const char *, ...);

/****** From the file "option.h" ******************************************/

enum option_type { OPT_FLAG=1,  OPT_INT,  OPT_DBL,  OPT_STR,
         OPT_FFLAG, OPT_FINT, OPT_FDBL, OPT_FSTR};
struct s_options {
  enum option_type type;
  const char *label;
  char *arg;
  const char *message;
};
int    OptInit(char**,struct s_options*,FILE*);
int    OptNArgs(void);
char  *OptArg(int);
void   OptErr(int);
void   OptPrint(void);

/******** From the file "parse.h" *****************************************/
void Parse(struct lemon *lemp);

/********* From the file "plink.h" ***************************************/
struct plink *Plink_new(void);
void Plink_add(struct plink **, struct config *);
void Plink_copy(struct plink **, struct plink *);
void Plink_delete(struct plink *);

/********** From the file "report.h" *************************************/
void Reprint(struct lemon *);
void ReportOutput(struct lemon *);
void ReportTable(struct lemon *, int);
void ReportHeader(struct lemon *);
void CompressTables(struct lemon *);
void ResortStates(struct lemon *);

/********** From the file "set.h" ****************************************/
void  SetSize(int);             /* All sets will be of size N */
char *SetNew(void);               /* A new set for element 0..N */
void  SetFree(char*);             /* Deallocate a set */

char *SetNew(void);               /* A new set for element 0..N */
int SetAdd(char*,int);            /* Add element to a set */
int SetUnion(char *,char *);    /* A <- A U B, thru element N */

#define SetFind(X,Y) (X[Y])       /* True if Y is in set X */

/********** From the file "struct.h" *************************************/
/*
** Principal data structures for the LEMON parser generator.
*/

typedef enum {LEMON_FALSE=0, LEMON_TRUE} Boolean;

/* Symbols (terminals and nonterminals) of the grammar are stored
** in the following: */
enum symbol_type {



  TERMINAL,
  NONTERMINAL,
  MULTITERMINAL




};
enum e_assoc {
    LEFT,
    RIGHT,
    NONE,
    UNK
};
struct symbol {
  const char *name;        /* Name of the symbol */
  int index;               /* Index number for this symbol */
  enum symbol_type type;   /* Symbols are all either TERMINALS or NTs */
  struct rule *rule;       /* Linked list of rules of this (if an NT) */
  struct symbol *fallback; /* fallback token in case this token doesn't parse */
  int prec;                /* Precedence if defined (-1 otherwise) */
  enum e_assoc assoc;      /* Associativity if precedence is defined */
  char *firstset;          /* First-set for all rules of this symbol */
  Boolean lambda;          /* True if NT and can generate an empty string */
  int useCnt;              /* Number of times used */
  char *destructor;        /* Code which executes whenever this symbol is
                           ** popped from the stack during error processing */
  int destLineno;          /* Line number for start of destructor */
  char *datatype;          /* The data type of information held by this
................................................................................
  struct symbol **subsym;  /* Array of constituent symbols */
};

/* Each production rule in the grammar is stored in the following
** structure.  */
struct rule {
  struct symbol *lhs;      /* Left-hand side of the rule */
  const char *lhsalias;    /* Alias for the LHS (NULL if none) */
  int lhsStart;            /* True if left-hand side is the start symbol */
  int ruleline;            /* Line number for the rule */
  int nrhs;                /* Number of RHS symbols */
  struct symbol **rhs;     /* The RHS symbols */
  const char **rhsalias;   /* An alias for each RHS symbol (NULL if none) */
  int line;                /* Line number at which code begins */
  const char *code;        /* The code executed when this rule is reduced */
  struct symbol *precsym;  /* Precedence symbol for this rule */
  int index;               /* An index number for this rule */
  Boolean canReduce;       /* True if this rule is ever reduced */
  struct rule *nextlhs;    /* Next rule with the same LHS */
  struct rule *next;       /* Next rule in the global list */
};

/* A configuration is a production rule of the grammar together with
** a mark (dot) showing how much of that rule has been processed so far.
** Configurations also contain a follow-set which is a list of terminal
** symbols which are allowed to immediately follow the end of the rule.
** Every configuration is recorded as an instance of the following: */
enum cfgstatus {
  COMPLETE,
  INCOMPLETE
};
struct config {
  struct rule *rp;         /* The rule upon which the configuration is based */
  int dot;                 /* The parse point */
  char *fws;               /* Follow-set for this configuration only */
  struct plink *fplp;      /* Follow-set forward propagation links */
  struct plink *bplp;      /* Follow-set backwards propagation links */
  struct state *stp;       /* Pointer to state which contains this */
  enum cfgstatus status;   /* used during followset and shift computations */



  struct config *next;     /* Next configuration in the state */
  struct config *bp;       /* The next basis configuration */
};

enum e_action {
  SHIFT,
  ACCEPT,
  REDUCE,
  ERROR,
  SSCONFLICT,              /* A shift/shift conflict */
  SRCONFLICT,              /* Was a reduce, but part of a conflict */
  RRCONFLICT,              /* Was a reduce, but part of a conflict */
  SH_RESOLVED,             /* Was a shift.  Precedence resolved conflict */
  RD_RESOLVED,             /* Was reduce.  Precedence resolved conflict */
  NOT_USED                 /* Deleted by compression */
};

/* Every shift or reduce operation is stored as one of the following */
struct action {
  struct symbol *sp;       /* The look-ahead symbol */
  enum e_action type;











  union {
    struct state *stp;     /* The new state, if a shift */
    struct rule *rp;       /* The rule, if a reduce */
  } x;
  struct action *next;     /* Next action for this state */
  struct action *collide;  /* Next action with the same hash */
};
................................................................................
** by the associative array code building program "aagen".
** Do not edit this file!  Instead, edit the specification
** file, then rerun aagen.
*/
/*
** Code for processing tables in the LEMON parser generator.
*/

/* Routines for handling a strings */

const char *Strsafe(const char *);

void Strsafe_init(void);
int Strsafe_insert(const char *);
const char *Strsafe_find(const char *);

/* Routines for handling symbols of the grammar */

struct symbol *Symbol_new(const char *);
int Symbolcmpp(const void *, const void *);
void Symbol_init(void);
int Symbol_insert(struct symbol *, const char *);
struct symbol *Symbol_find(const char *);
struct symbol *Symbol_Nth(int);
int Symbol_count(void);
struct symbol **Symbol_arrayof(void);

/* Routines to manage the state table */

int Configcmp(const char *, const char *);
struct state *State_new(void);
void State_init(void);
int State_insert(struct state *, struct config *);
struct state *State_find(struct config *);
struct state **State_arrayof(/*  */);

/* Routines used for efficiency in Configlist_add */

void Configtable_init(void);
int Configtable_insert(struct config *);
struct config *Configtable_find(struct config *);
void Configtable_clear(int(*)(struct config *));

/****************** From the file "action.c" *******************************/
/*
** Routines processing parser actions in the LEMON parser generator.
*/

/* Allocate a new parser action */
static struct action *Action_new(void){
  static struct action *freelist = 0;
  struct action *newaction;

  if( freelist==0 ){
    int i;
    int amt = 100;
    freelist = (struct action *)calloc(amt, sizeof(struct action));
    if( freelist==0 ){
      fprintf(stderr,"Unable to allocate memory for a new parser action.");
      exit(1);
    }
    for(i=0; i<amt-1; i++) freelist[i].next = &freelist[i+1];
    freelist[amt-1].next = 0;
  }
  newaction = freelist;
  freelist = freelist->next;
  return newaction;
}

/* Compare two actions for sorting purposes.  Return negative, zero, or
** positive if the first action is less than, equal to, or greater than
** the first
*/
static int actioncmp(
................................................................................
  struct action *ap
){
  ap = (struct action *)msort((char *)ap,(char **)&ap->next,
                              (int(*)(const char*,const char*))actioncmp);
  return ap;
}

void Action_add(
  struct action **app,
  enum e_action type,
  struct symbol *sp,
  char *arg

){
  struct action *newaction;
  newaction = Action_new();
  newaction->next = *app;
  *app = newaction;
  newaction->type = type;
  newaction->sp = sp;
  if( type==SHIFT ){
    newaction->x.stp = (struct state *)arg;
  }else{
    newaction->x.rp = (struct rule *)arg;
  }
}
/********************** New code to implement the "acttab" module ***********/
/*
** This module implements routines use to construct the yy_action[] table.
*/

................................................................................
** All actions associated with a single state_number are first entered
** into aLookahead[] using multiple calls to acttab_action().  Then the 
** actions for that single state_number are placed into the aAction[] 
** array with a single call to acttab_insert().  The acttab_insert() call
** also resets the aLookahead[] array in preparation for the next
** state number.
*/
struct lookahead_action {
  int lookahead;             /* Value of the lookahead token */
  int action;                /* Action to take on the given lookahead */
};
typedef struct acttab acttab;
struct acttab {
  int nAction;                 /* Number of used slots in aAction[] */
  int nActionAlloc;            /* Slots allocated for aAction[] */
  struct lookahead_action


    *aAction,                  /* The yy_action[] table under construction */
    *aLookahead;               /* A single new transaction set */
  int mnLookahead;             /* Minimum aLookahead[].lookahead */
  int mnAction;                /* Action associated with mnLookahead */
  int mxLookahead;             /* Maximum aLookahead[].lookahead */
  int nLookahead;              /* Used slots in aLookahead[] */
  int nLookaheadAlloc;         /* Slots allocated in aLookahead[] */
};
................................................................................
  free( p->aAction );
  free( p->aLookahead );
  free( p );
}

/* Allocate a new acttab structure */
acttab *acttab_alloc(void){
  acttab *p = (acttab *) calloc( 1, sizeof(*p) );
  if( p==0 ){
    fprintf(stderr,"Unable to allocate memory for a new acttab.");
    exit(1);
  }
  memset(p, 0, sizeof(*p));
  return p;
}
................................................................................
**
** This routine is called once for each lookahead for a particular
** state.
*/
void acttab_action(acttab *p, int lookahead, int action){
  if( p->nLookahead>=p->nLookaheadAlloc ){
    p->nLookaheadAlloc += 25;
    p->aLookahead = (struct lookahead_action *) realloc( p->aLookahead,
                             sizeof(p->aLookahead[0])*p->nLookaheadAlloc );
    if( p->aLookahead==0 ){
      fprintf(stderr,"malloc failed\n");
      exit(1);
    }
  }
  if( p->nLookahead==0 ){
................................................................................
  ** in the worst case.  The worst case occurs if the transaction set
  ** must be appended to the current action table
  */
  n = p->mxLookahead + 1;
  if( p->nAction + n >= p->nActionAlloc ){
    int oldAlloc = p->nActionAlloc;
    p->nActionAlloc = p->nAction + n + p->nActionAlloc + 20;
    p->aAction = (struct lookahead_action *) realloc( p->aAction,
                          sizeof(p->aAction[0])*p->nActionAlloc);
    if( p->aAction==0 ){
      fprintf(stderr,"malloc failed\n");
      exit(1);
    }
    for(i=oldAlloc; i<p->nActionAlloc; i++){
      p->aAction[i].lookahead = -1;
................................................................................
** Those rules which have a precedence symbol coded in the input
** grammar using the "[symbol]" construct will already have the
** rp->precsym field filled.  Other rules take as their precedence
** symbol the first RHS symbol with a defined precedence.  If there
** are not RHS symbols with a defined precedence, the precedence
** symbol field is left blank.
*/
void FindRulePrecedences(struct lemon *xp)

{
  struct rule *rp;
  for(rp=xp->rule; rp; rp=rp->next){
    if( rp->precsym==0 ){
      int i, j;
      for(i=0; i<rp->nrhs && rp->precsym==0; i++){
        struct symbol *sp = rp->rhs[i];
................................................................................
}

/* Find all nonterminals which will generate the empty string.
** Then go back and compute the first sets of every nonterminal.
** The first set is the set of all terminal symbols which can begin
** a string generated by that nonterminal.
*/
void FindFirstSets(struct lemon *lemp)

{
  int i, j;
  struct rule *rp;
  int progress;

  for(i=0; i<lemp->nsymbol; i++){
    lemp->symbols[i]->lambda = LEMON_FALSE;
................................................................................
  return;
}

/* Compute all LR(0) states for the grammar.  Links
** are added to between some states so that the LR(1) follow sets
** can be computed later.
*/
PRIVATE struct state *getstate(struct lemon *);  /* forward reference */

void FindStates(struct lemon *lemp)
{
  struct symbol *sp;
  struct rule *rp;

  Configlist_init();

  /* Find the start symbol */
................................................................................
  (void)getstate(lemp);
  return;
}

/* Return a pointer to a state which is described by the configuration
** list which has been built from calls to Configlist_add.
*/
PRIVATE void buildshifts(struct lemon *, struct state *); /* Forwd ref */
PRIVATE struct state *getstate(struct lemon *lemp)

{
  struct config *cfp, *bp;
  struct state *stp;

  /* Extract the sorted basis of the new state.  The basis was constructed
  ** by prior calls to "Configlist_addbasis()". */
  Configlist_sortbasis();
................................................................................
  }
  return stp;
}

/*
** Return true if two symbols are the same.
*/

int same_symbol(struct symbol *a, struct symbol *b)

{
  int i;
  if( a==b ) return 1;
  if( a->type!=MULTITERMINAL ) return 0;
  if( b->type!=MULTITERMINAL ) return 0;
  if( a->nsubsym!=b->nsubsym ) return 0;
  for(i=0; i<a->nsubsym; i++){
................................................................................
  }
  return 1;
}

/* Construct all successor states to the given state.  A "successor"
** state is any state which can be reached by a shift action.
*/
PRIVATE void buildshifts(struct lemon *lemp, struct state *stp)


{
  struct config *cfp;  /* For looping thru the config closure of "stp" */
  struct config *bcfp; /* For the inner loop on config closure of "stp" */
  struct config *newcfg;  /* */
  struct symbol *sp;   /* Symbol following the dot in configuration "cfp" */
  struct symbol *bsp;  /* Symbol following the dot in configuration "bcfp" */
  struct state *newstp; /* A pointer to a successor state */

  /* Each configuration becomes complete after it contibutes to a successor
  ** state.  Initially, all configurations are incomplete */
  for(cfp=stp->cfp; cfp; cfp=cfp->next) cfp->status = INCOMPLETE;
................................................................................
    ** construction but with the dot shifted one symbol to the right. */
    for(bcfp=cfp; bcfp; bcfp=bcfp->next){
      if( bcfp->status==COMPLETE ) continue;    /* Already used */
      if( bcfp->dot>=bcfp->rp->nrhs ) continue; /* Can't shift this one */
      bsp = bcfp->rp->rhs[bcfp->dot];           /* Get symbol after dot */
      if( !same_symbol(bsp,sp) ) continue;      /* Must be same as for "cfp" */
      bcfp->status = COMPLETE;                  /* Mark this config as used */
      newcfg = Configlist_addbasis(bcfp->rp,bcfp->dot+1);
      Plink_add(&newcfg->bplp,bcfp);
    }

    /* Get a pointer to the state described by the basis configuration set
    ** constructed in the preceding loop */
    newstp = getstate(lemp);

    /* The state "newstp" is reached from the state "stp" by a shift action
................................................................................
    }
  }
}

/*
** Construct the propagation links
*/

void FindLinks(struct lemon *lemp)
{
  int i;
  struct config *cfp, *other;
  struct state *stp;
  struct plink *plp;

  /* Housekeeping detail:
................................................................................
}

/* Compute all followsets.
**
** A followset is the set of all symbols which can come immediately
** after a configuration.
*/
void FindFollowSets(struct lemon *lemp)

{
  int i;
  struct config *cfp;
  struct plink *plp;
  int progress;
  int change;

................................................................................
	}
        cfp->status = COMPLETE;
      }
    }
  }while( progress );
}

static int resolve_conflict(struct action *,struct action *, struct symbol *);

/* Compute the reduce actions, and resolve conflicts.
*/

void FindActions(struct lemon *lemp)
{
  int i,j;
  struct config *cfp;
  struct state *stp;
  struct symbol *sp;
  struct rule *rp;

................................................................................
**   is not associated with the error rule.  If neither or both
**   actions are associated with an error rule, then try to
**   use precedence to resolve the conflict.
**
** If either action is a SHIFT, then it must be apx.  This
** function won't work if apx->type==REDUCE and apy->type==SHIFT.
*/
static int resolve_conflict(
  struct action *apx,
  struct action *apy,
  struct symbol *errsym   /* The error symbol (if defined.  NULL otherwise) */

){
  struct symbol *spx, *spy;
  int errcnt = 0;
  assert( apx->sp==apy->sp );  /* Otherwise there would be no conflict */
  if( apx->type==SHIFT && apy->type==SHIFT ){
    apy->type = SSCONFLICT;
    errcnt++;
  }
................................................................................
static struct config *current = 0;       /* Top of list of configurations */
static struct config **currentend = 0;   /* Last on list of configs */
static struct config *basis = 0;         /* Top of list of basis configs */
static struct config **basisend = 0;     /* End of list of basis configs */

/* Return a pointer to a new configuration */
PRIVATE struct config *newconfig(){
  struct config *newcfg;
  if( freelist==0 ){
    int i;
    int amt = 3;
    freelist = (struct config *)calloc( amt, sizeof(struct config) );
    if( freelist==0 ){
      fprintf(stderr,"Unable to allocate memory for a new configuration.");
      exit(1);
    }
    for(i=0; i<amt-1; i++) freelist[i].next = &freelist[i+1];
    freelist[amt-1].next = 0;
  }
  newcfg = freelist;
  freelist = freelist->next;
  return newcfg;
}

/* The configuration "old" is no longer used */
PRIVATE void deleteconfig(struct config *old)

{
  old->next = freelist;
  freelist = old;
}

/* Initialized the configuration list builder */
void Configlist_init(){
................................................................................
  basis = 0;
  basisend = &basis;
  Configtable_clear(0);
  return;
}

/* Add another configuration to the configuration list */
struct config *Configlist_add(
  struct rule *rp,    /* The rule */
  int dot             /* Index into the RHS of the rule where the dot goes */

){
  struct config *cfp, model;

  assert( currentend!=0 );
  model.rp = rp;
  model.dot = dot;
  cfp = Configtable_find(&model);
  if( cfp==0 ){
................................................................................
    currentend = &cfp->next;
    Configtable_insert(cfp);
  }
  return cfp;
}

/* Add a basis configuration to the configuration list */
struct config *Configlist_addbasis(struct rule *rp, int dot)


{
  struct config *cfp, model;

  assert( basisend!=0 );
  assert( currentend!=0 );
  model.rp = rp;
  model.dot = dot;
................................................................................
    basisend = &cfp->bp;
    Configtable_insert(cfp);
  }
  return cfp;
}

/* Compute the closure of the configuration list */
void Configlist_closure(struct lemon *lemp)

{
  struct config *cfp, *newcfp;
  struct rule *rp, *newrp;
  struct symbol *sp, *xsp;
  int i, dot;

  assert( currentend!=0 );
................................................................................
  old = basis;
  basis = 0;
  basisend = 0;
  return old;
}

/* Free all elements of the given configuration list */
void Configlist_eat(struct config *cfp)

{
  struct config *nextcfp;
  for(; cfp; cfp=nextcfp){
    nextcfp = cfp->next;
    assert( cfp->fplp==0 );
    assert( cfp->bplp==0 );
    if( cfp->fws ) SetFree(cfp->fws);
................................................................................
  return;
}
/***************** From the file "error.c" *********************************/
/*
** Code for printing error message.
*/






























void ErrorMsg(const char *filename, int lineno, const char *format, ...){





  va_list ap;


  fprintf(stderr, "%s:%d: ", filename, lineno);
  va_start(ap, format);










  vfprintf(stderr,format,ap);
  va_end(ap);















  fprintf(stderr, "\n");
}
/**************** From the file "main.c" ************************************/
/*
** Main program file for the LEMON parser generator.
*/

/* Report an out-of-memory condition and abort.  This function
................................................................................

/* This routine is called with the argument to each -D command-line option.
** Add the macro defined to the azDefine array.
*/
static void handle_D_option(char *z){
  char **paz;
  nDefine++;
  azDefine = (char **) realloc(azDefine, sizeof(azDefine[0])*nDefine);
  if( azDefine==0 ){
    fprintf(stderr,"out of memory\n");
    exit(1);
  }
  paz = &azDefine[nDefine-1];
  *paz = (char *) malloc( lemonStrlen(z)+1 );
  if( *paz==0 ){
    fprintf(stderr,"out of memory\n");
    exit(1);
  }
  strcpy(*paz, z);
  for(z=*paz; *z && *z!='='; z++){}
  *z = 0;
}

static char *user_templatename = NULL;
static void handle_T_option(char *z){
  user_templatename = (char *) malloc( lemonStrlen(z)+1 );
  if( user_templatename==0 ){
    memory_error();
  }
  strcpy(user_templatename, z);
}

/* The main program.  Parse the command line and do it... */


int main(int argc, char **argv)
{
  static int version = 0;
  static int rpflag = 0;
  static int basisflag = 0;
  static int compress = 0;
  static int quiet = 0;
  static int statistics = 0;
  static int mhflag = 0;
  static int nolinenosflag = 0;
  static struct s_options options[] = {
    {OPT_FLAG, "b", (char*)&basisflag, "Print only the basis in report."},
    {OPT_FLAG, "c", (char*)&compress, "Don't compress the action table."},
    {OPT_FSTR, "D", (char*)handle_D_option, "Define an %ifdef macro."},
    {OPT_FSTR, "T", (char*)handle_T_option, "Specify a template file."},
    {OPT_FLAG, "g", (char*)&rpflag, "Print grammar without actions."},
    {OPT_FLAG, "m", (char*)&mhflag, "Output a makeheaders compatible file."},
    {OPT_FLAG, "l", (char*)&nolinenosflag, "Do not print #line statements."},
    {OPT_FLAG, "q", (char*)&quiet, "(Quiet) Don't print the report file."},
    {OPT_FLAG, "s", (char*)&statistics,
                                   "Print parser stats to standard output."},
    {OPT_FLAG, "x", (char*)&version, "Print the version number."},
    {OPT_FLAG,0,0,0}
  };
  int i;
  int exitcode;
  struct lemon lem;

  atexit(LemonAtExit);

  OptInit(argv,options,stderr);
  if( version ){
     printf("Lemon version 1.0\n");
     exit(0); 
  }
  if( OptNArgs()!=1 ){
................................................................................
  }

  /* Count and index the symbols of the grammar */
  lem.nsymbol = Symbol_count();
  Symbol_new("{default}");
  lem.symbols = Symbol_arrayof();
  for(i=0; i<=lem.nsymbol; i++) lem.symbols[i]->index = i;
  qsort(lem.symbols,lem.nsymbol+1,sizeof(struct symbol*), Symbolcmpp);

  for(i=0; i<=lem.nsymbol; i++) lem.symbols[i]->index = i;
  for(i=1; isupper(lem.symbols[i]->name[0]); i++);
  lem.nterminal = i;

  /* Generate a reprint of the grammar, if requested on the command line */
  if( rpflag ){
    Reprint(&lem);
................................................................................
  }
  if( statistics ){
    printf("Parser statistics: %d terminals, %d nonterminals, %d rules\n",
      lem.nterminal, lem.nsymbol - lem.nterminal, lem.nrule);
    printf("                   %d states, %d parser table entries, %d conflicts\n",
      lem.nstate, lem.tablesize, lem.nconflict);
  }
  if( lem.nconflict > 0 ){
    fprintf(stderr,"%d parsing conflicts.\n",lem.nconflict);
  }


  /* return 0 on success, 1 on failure. */
  exitcode = ((lem.errorcnt > 0) || (lem.nconflict > 0)) ? 1 : 0;
  successful_exit = (exitcode == 0);
  exit(exitcode);
  return (exitcode);
}
/******************** From the file "msort.c" *******************************/
/*
** A generic merge-sort program.
**
** USAGE:
** Let "ptr" be a pointer to some structure which is at the head of
................................................................................

#define ISOPT(X) ((X)[0]=='-'||(X)[0]=='+'||strchr((X),'=')!=0)

/*
** Print the command line with a carrot pointing to the k-th character
** of the n-th field.
*/
static void errline(int n, int k, FILE *err)



{
  int spcnt, i;
  if( argv[0] ) fprintf(err,"%s",argv[0]);
  spcnt = lemonStrlen(argv[0]) + 1;
  for(i=1; i<n && argv[i]; i++){
    fprintf(err," %s",argv[i]);
    spcnt += lemonStrlen(argv[i])+1;
................................................................................
  }
}

/*
** Return the index of the N-th non-switch argument.  Return -1
** if N is out of range.
*/
static int argindex(int n)

{
  int i;
  int dashdash = 0;
  if( argv!=0 && *argv!=0 ){
    for(i=1; argv[i]; i++){
      if( dashdash || !ISOPT(argv[i]) ){
        if( n==0 ) return i;
................................................................................
}

static char emsg[] = "Command line syntax error: ";

/*
** Process a flag command line argument.
*/
static int handleflags(int i, FILE *err)


{
  int v;
  int errcnt = 0;
  int j;
  for(j=0; op[j].label; j++){
    if( strncmp(&argv[i][1],op[j].label,lemonStrlen(op[j].label))==0 ) break;
  }
................................................................................
      fprintf(err,"%sundefined option.\n",emsg);
      errline(i,1,err);
    }
    errcnt++;
  }else if( op[j].type==OPT_FLAG ){
    *((int*)op[j].arg) = v;
  }else if( op[j].type==OPT_FFLAG ){
    (*(void(*)(int))(op[j].arg))(v);
  }else if( op[j].type==OPT_FSTR ){
    (*(void(*)(char *))(op[j].arg))(&argv[i][2]);
  }else{
    if( err ){
      fprintf(err,"%smissing argument on switch.\n",emsg);
      errline(i,1,err);
    }
    errcnt++;
  }
  return errcnt;
}

/*
** Process a command line switch which has an argument.
*/
static int handleswitch(int i, FILE *err)


{
  int lv = 0;
  double dv = 0.0;
  char *sv = 0, *end;
  char *cp;
  int j;
  int errcnt = 0;
................................................................................
      case OPT_FLAG:
      case OPT_FFLAG:
        break;
      case OPT_DBL:
        *(double*)(op[j].arg) = dv;
        break;
      case OPT_FDBL:
        (*(void(*)(double))(op[j].arg))(dv);
        break;
      case OPT_INT:
        *(int*)(op[j].arg) = lv;
        break;
      case OPT_FINT:
        (*(void(*)(int))(op[j].arg))((int)lv);
        break;
      case OPT_STR:
        *(char**)(op[j].arg) = sv;
        break;
      case OPT_FSTR:
        (*(void(*)(char *))(op[j].arg))(sv);
        break;
    }
  }
  return errcnt;
}



int OptInit(char **a, struct s_options *o, FILE *err)

{
  int errcnt = 0;
  argv = a;
  op = o;
  errstream = err;
  if( argv && *argv && op ){
    int i;
................................................................................
      if( dashdash || !ISOPT(argv[i]) ) cnt++;
      if( strcmp(argv[i],"--")==0 ) dashdash = 1;
    }
  }
  return cnt;
}

char *OptArg(int n)

{
  int i;
  i = argindex(n);
  return i>=0 ? argv[i] : 0;
}

void OptErr(int n)

{
  int i;
  i = argindex(n);
  if( i>=0 ) errline(i,0,errstream);
}

void OptPrint(){
................................................................................
}
/*********************** From the file "parse.c" ****************************/
/*
** Input file parser for the LEMON parser generator.
*/

/* The state of the parser */
enum e_state {
  INITIALIZE,
  WAITING_FOR_DECL_OR_RULE,
  WAITING_FOR_DECL_KEYWORD,
  WAITING_FOR_DECL_ARG,
  WAITING_FOR_PRECEDENCE_SYMBOL,
  WAITING_FOR_ARROW,
  IN_RHS,
  LHS_ALIAS_1,
  LHS_ALIAS_2,
  LHS_ALIAS_3,
  RHS_ALIAS_1,
  RHS_ALIAS_2,
  PRECEDENCE_MARK_1,
  PRECEDENCE_MARK_2,
  RESYNC_AFTER_RULE_ERROR,
  RESYNC_AFTER_DECL_ERROR,
  WAITING_FOR_DESTRUCTOR_SYMBOL,
  WAITING_FOR_DATATYPE_SYMBOL,
  WAITING_FOR_FALLBACK_ID,
  WAITING_FOR_WILDCARD_ID
};
struct pstate {
  char *filename;       /* Name of the input file */
  int tokenlineno;      /* Linenumber at which current token starts */
  int errorcnt;         /* Number of errors so far */
  char *tokenstart;     /* Text of current token */
  struct lemon *gp;     /* Global state vector */





















  enum e_state state;        /* The state of the parser */
  struct symbol *fallback;   /* The fallback token */
  struct symbol *lhs;        /* Left-hand side of current rule */
  const char *lhsalias;      /* Alias for the LHS */
  int nrhs;                  /* Number of right-hand side symbols seen */
  struct symbol *rhs[MAXRHS];  /* RHS symbols */
  const char *alias[MAXRHS]; /* Aliases for each RHS symbol (or NULL) */
  struct rule *prevrule;     /* Previous rule parsed */
  const char *declkeyword;   /* Keyword of a declaration */
  char **declargslot;        /* Where the declaration argument should be put */
  int insertLineMacro;       /* Add #line before declaration insert */
  int *decllinenoslot;       /* Where to write declaration line number */
  enum e_assoc declassoc;    /* Assign this association to decl arguments */
  int preccounter;           /* Assign this precedence to decl arguments */
  struct rule *firstrule;    /* Pointer to first rule in the grammar */
  struct rule *lastrule;     /* Pointer to the most recently parsed rule */
};

/* Parse a single token */
static void parseonetoken(struct pstate *psp)

{
  const char *x;
  x = Strsafe(psp->tokenstart);     /* Save the token permanently */
#if 0
  printf("%s:%d: Token=[%s] state=%d\n",psp->filename,psp->tokenlineno,
    x,psp->state);
#endif
  switch( psp->state ){
    case INITIALIZE:
................................................................................
            "Can't allocate enough memory for this rule.");
          psp->errorcnt++;
          psp->prevrule = 0;
	}else{
          int i;
          rp->ruleline = psp->tokenlineno;
          rp->rhs = (struct symbol**)&rp[1];
          rp->rhsalias = (const char**)&(rp->rhs[psp->nrhs]);
          for(i=0; i<psp->nrhs; i++){
            rp->rhs[i] = psp->rhs[i];
            rp->rhsalias[i] = psp->alias[i];
	  }
          rp->lhs = psp->lhs;
          rp->lhsalias = psp->lhsalias;
          rp->nrhs = psp->nrhs;
................................................................................
          psp->alias[psp->nrhs] = 0;
          psp->nrhs++;
	}
      }else if( (x[0]=='|' || x[0]=='/') && psp->nrhs>0 ){
        struct symbol *msp = psp->rhs[psp->nrhs-1];
        if( msp->type!=MULTITERMINAL ){
          struct symbol *origsp = msp;
          msp = (struct symbol *) calloc(1,sizeof(*msp));
          memset(msp, 0, sizeof(*msp));
          msp->type = MULTITERMINAL;
          msp->nsubsym = 1;
          msp->subsym = (struct symbol **) calloc(1,sizeof(struct symbol*));
          msp->subsym[0] = origsp;
          msp->name = origsp->name;
          psp->rhs[psp->nrhs-1] = msp;
        }
        msp->nsubsym++;
        msp->subsym = (struct symbol **) realloc(msp->subsym,
          sizeof(struct symbol*)*msp->nsubsym);
        msp->subsym[msp->nsubsym-1] = Symbol_new(&x[1]);
        if( islower(x[1]) || islower(msp->subsym[0]->name[0]) ){
          ErrorMsg(psp->filename,psp->tokenlineno,
            "Cannot form a compound containing a non-terminal");
          psp->errorcnt++;
        }
      }else if( x[0]=='(' && psp->nrhs>0 ){
................................................................................
        psp->errorcnt++;
        psp->state = RESYNC_AFTER_DECL_ERROR;
      }
      break;
    case WAITING_FOR_DESTRUCTOR_SYMBOL:
      if( !isalpha(x[0]) ){
        ErrorMsg(psp->filename,psp->tokenlineno,
          "Symbol name missing after %%destructor keyword");
        psp->errorcnt++;
        psp->state = RESYNC_AFTER_DECL_ERROR;
      }else{
        struct symbol *sp = Symbol_new(x);
        psp->declargslot = &sp->destructor;
        psp->decllinenoslot = &sp->destLineno;
        psp->insertLineMacro = 1;
        psp->state = WAITING_FOR_DECL_ARG;
      }
      break;
    case WAITING_FOR_DATATYPE_SYMBOL:
      if( !isalpha(x[0]) ){
        ErrorMsg(psp->filename,psp->tokenlineno,
          "Symbol name missing after %%type keyword");
        psp->errorcnt++;
        psp->state = RESYNC_AFTER_DECL_ERROR;
      }else{
        struct symbol *sp = Symbol_find(x);
        if((sp) && (sp->datatype)){
          ErrorMsg(psp->filename,psp->tokenlineno,
            "Symbol %%type \"%s\" already defined", x);
          psp->errorcnt++;
          psp->state = RESYNC_AFTER_DECL_ERROR;
        }else{
          if (!sp){
            sp = Symbol_new(x);
          }
          psp->declargslot = &sp->datatype;
          psp->insertLineMacro = 0;
          psp->state = WAITING_FOR_DECL_ARG;
        }
      }
      break;
    case WAITING_FOR_PRECEDENCE_SYMBOL:
      if( x[0]=='.' ){
        psp->state = WAITING_FOR_DECL_OR_RULE;
      }else if( isupper(x[0]) ){
        struct symbol *sp;
................................................................................
        ErrorMsg(psp->filename,psp->tokenlineno,
          "Can't assign a precedence to \"%s\".",x);
        psp->errorcnt++;
      }
      break;
    case WAITING_FOR_DECL_ARG:
      if( x[0]=='{' || x[0]=='\"' || isalnum(x[0]) ){
        const char *zOld, *zNew;
        char *zBuf, *z;
        int nOld, n, nLine, nNew, nBack;
        int addLineMacro;
        char zLine[50];
        zNew = x;
        if( zNew[0]=='"' || zNew[0]=='{' ) zNew++;
        nNew = lemonStrlen(zNew);
        if( *psp->declargslot ){
................................................................................
          for(z=psp->filename, nBack=0; *z; z++){
            if( *z=='\\' ) nBack++;
          }
          sprintf(zLine, "#line %d ", psp->tokenlineno);
          nLine = lemonStrlen(zLine);
          n += nLine + lemonStrlen(psp->filename) + nBack;
        }
        *psp->declargslot = (char *) realloc(*psp->declargslot, n);
        zBuf = *psp->declargslot + nOld;
        if( addLineMacro ){
          if( nOld && zBuf[-1]!='\n' ){
            *(zBuf++) = '\n';
          }
          memcpy(zBuf, zLine, nLine);
          zBuf += nLine;
          *(zBuf++) = '"';
................................................................................
}

/* In spite of its name, this function is really a scanner.  It read
** in the entire input file (all at once) then tokenizes it.  Each
** token is passed to the function "parseonetoken" which builds all
** the appropriate data structures in the global state vector "gp".
*/

void Parse(struct lemon *gp)
{
  struct pstate ps;
  FILE *fp;
  char *filebuf;
  int filesize;
  int lineno;
  int c;
................................................................................
** Routines processing configuration follow-set propagation links
** in the LEMON parser generator.
*/
static struct plink *plink_freelist = 0;

/* Allocate a new plink */
struct plink *Plink_new(){
  struct plink *newlink;

  if( plink_freelist==0 ){
    int i;
    int amt = 100;
    plink_freelist = (struct plink *)calloc( amt, sizeof(struct plink) );
    if( plink_freelist==0 ){
      fprintf(stderr,
      "Unable to allocate memory for a new follow-set propagation link.\n");
      exit(1);
    }
    for(i=0; i<amt-1; i++) plink_freelist[i].next = &plink_freelist[i+1];
    plink_freelist[amt-1].next = 0;
  }
  newlink = plink_freelist;
  plink_freelist = plink_freelist->next;
  return newlink;
}

/* Add a plink to a plink list */

void Plink_add(struct plink **plpp, struct config *cfp)

{
  struct plink *newlink;
  newlink = Plink_new();
  newlink->next = *plpp;
  *plpp = newlink;
  newlink->cfp = cfp;
}

/* Transfer every plink on the list "from" to the list "to" */


void Plink_copy(struct plink **to, struct plink *from)
{
  struct plink *nextpl;
  while( from ){
    nextpl = from->next;
    from->next = *to;
    *to = from;
    from = nextpl;
  }
}

/* Delete every plink on the list */
void Plink_delete(struct plink *plp)

{
  struct plink *nextpl;

  while( plp ){
    nextpl = plp->next;
    plp->next = plink_freelist;
    plink_freelist = plp;
................................................................................
** Procedures for generating reports and tables in the LEMON parser generator.
*/

/* Generate a filename with the given suffix.  Space to hold the
** name comes from malloc() and must be freed by the calling
** function.
*/
PRIVATE char *file_makename(struct lemon *lemp, const char *suffix)


{
  char *name;
  char *cp;

  name = (char*)malloc( lemonStrlen(lemp->filename) + lemonStrlen(suffix) + 5 );
  if( name==0 ){
    fprintf(stderr,"Can't allocate space for a filename.\n");
    exit(1);
  }
  strcpy(name,lemp->filename);
  cp = strrchr(name,'.');
  if( cp ) *cp = 0;
................................................................................
  strcat(name,suffix);
  return name;
}

/* Open a file with a name based on the name of the input file,
** but with a different (specified) suffix, and return a pointer
** to the stream */
PRIVATE FILE *file_open(
  struct lemon *lemp,
  const char *suffix,
  const char *mode

){
  FILE *fp;

  if( lemp->outname ) free(lemp->outname);
  lemp->outname = file_makename(lemp, suffix);
  fp = fopen(lemp->outname,mode);
  if( fp==0 && *mode=='w' ){
    fprintf(stderr,"Can't open file \"%s\".\n",lemp->outname);
    lemp->errorcnt++;
    return 0;
  }

  /* Add files we create to a list, so we can delete them if we fail. This
  ** is to keep makefiles from getting confused. We don't include .out files,
  ** though: this is debug information, and you don't want it deleted if there
  ** was an error you need to track down.
  */
  if(( *mode=='w' ) && (strcmp(suffix, ".out") != 0)){
    const char **ptr = (const char **)
        realloc(made_files, sizeof (const char **) * (made_files_count + 1));
    char *fname = strdup(lemp->outname);
    if ((ptr == NULL) || (fname == NULL)) {
        free(ptr);
        free(fname);
        memory_error();
    }
    made_files = ptr;
    made_files[made_files_count++] = fname;
  }
  return fp;
}

/* Duplicate the input file without comments and without actions 
** on rules */

void Reprint(struct lemon *lemp)
{
  struct rule *rp;
  struct symbol *sp;
  int i, j, maxlen, len, ncolumns, skip;
  printf("// Reprint of input file \"%s\".\n// Symbols:\n",lemp->filename);
  maxlen = 10;
  for(i=0; i<lemp->nsymbol; i++){
................................................................................
    printf(".");
    if( rp->precsym ) printf(" [%s]",rp->precsym->name);
    /* if( rp->code ) printf("\n    %s",rp->code); */
    printf("\n");
  }
}



void ConfigPrint(FILE *fp, struct config *cfp)
{
  struct rule *rp;
  struct symbol *sp;
  int i, j;
  rp = cfp->rp;
  fprintf(fp,"%s ::=",rp->lhs->name);
  for(i=0; i<=rp->nrhs; i++){
................................................................................
      result = 0;
      break;
  }
  return result;
}

/* Generate the "y.output" log file */

void ReportOutput(struct lemon *lemp)
{
  int i;
  struct state *stp;
  struct config *cfp;
  struct action *ap;
  FILE *fp;

................................................................................
  }
  fclose(fp);
  return;
}

/* Search for the file "name" which is in the same directory as
** the exacutable */
PRIVATE char *pathsearch(char *argv0, char *name, int modemask)
{
  const char *pathlist;
  char *pathbufptr;
  char *pathbuf;

  char *path,*cp;
  char c;

#ifdef __WIN32__
  cp = strrchr(argv0,'\\');
#else
  cp = strrchr(argv0,'/');
................................................................................
  if( cp ){
    c = *cp;
    *cp = 0;
    path = (char *)malloc( lemonStrlen(argv0) + lemonStrlen(name) + 2 );
    if( path ) sprintf(path,"%s/%s",argv0,name);
    *cp = c;
  }else{

    pathlist = getenv("PATH");
    if( pathlist==0 ) pathlist = ".:/bin:/usr/bin";
    pathbuf = (char *) malloc( lemonStrlen(pathlist) + 1 );
    path = (char *)malloc( lemonStrlen(pathlist)+lemonStrlen(name)+2 );
    if( (pathbuf != 0) && (path!=0) ){
      pathbufptr = pathbuf;
      strcpy(pathbuf, pathlist);
      while( *pathbuf ){
        cp = strchr(pathbuf,':');
        if( cp==0 ) cp = &pathbuf[lemonStrlen(pathbuf)];
        c = *cp;
        *cp = 0;
        sprintf(path,"%s/%s",pathbuf,name);
        *cp = c;
        if( c==0 ) pathbuf[0] = 0;
        else pathbuf = &cp[1];
        if( access(path,modemask)==0 ) break;
      }
      free(pathbufptr);
    }
  }
  return path;
}

/* Given an action, compute the integer value for that action
** which is to be put in the action table of the generated machine.
** Return negative if no action should be generated.
*/
PRIVATE int compute_action(struct lemon *lemp, struct action *ap)


{
  int act;
  switch( ap->type ){
    case SHIFT:  act = ap->x.stp->statenum;            break;
    case REDUCE: act = ap->x.rp->index + lemp->nstate; break;
    case ERROR:  act = lemp->nstate + lemp->nrule;     break;
    case ACCEPT: act = lemp->nstate + lemp->nrule + 1; break;
................................................................................
/* The first function transfers data from "in" to "out" until
** a line is seen which begins with "%%".  The line number is
** tracked.
**
** if name!=0, then any word that begin with "Parse" is changed to
** begin with *name instead.
*/
PRIVATE void tplt_xfer(char *name, FILE *in, FILE *out, int *lineno)




{
  int i, iStart;
  char line[LINESIZE];
  while( fgets(line,LINESIZE,in) && (line[0]!='%' || line[1]!='%') ){
    (*lineno)++;
    iStart = 0;
    if( name ){
................................................................................
    }
    fprintf(out,"%s",&line[iStart]);
  }
}

/* The next function finds the template file and opens it, returning
** a pointer to the opened file. */
PRIVATE FILE *tplt_open(struct lemon *lemp)

{
  static char templatename[] = "lempar.c";
  char buf[1000];
  FILE *in;
  char *tpltname;
  char *cp;

  /* first, see if user specified a template filename on the command line. */
  if (user_templatename != 0) {
    if( access(user_templatename,004)==-1 ){
      fprintf(stderr,"Can't find the parser driver template file \"%s\".\n",
        user_templatename);
      lemp->errorcnt++;
      return 0;
    }
    in = fopen(user_templatename,"rb");
    if( in==0 ){
      fprintf(stderr,"Can't open the template file \"%s\".\n",user_templatename);
      lemp->errorcnt++;
      return 0;
    }
    return in;
  }

  cp = strrchr(lemp->filename,'.');
  if( cp ){
    sprintf(buf,"%.*s.lt",(int)(cp-lemp->filename),lemp->filename);
  }else{
    sprintf(buf,"%s.lt",lemp->filename);
  }
................................................................................
    lemp->errorcnt++;
    return 0;
  }
  return in;
}

/* Print a #line directive line to the output file. */
PRIVATE void tplt_linedir(FILE *out, int lineno, char *filename)



{
  fprintf(out,"#line %d \"",lineno);
  while( *filename ){
    if( *filename == '\\' ) putc('\\',out);
    putc(*filename,out);
    filename++;
  }
  fprintf(out,"\"\n");
}

/* Print a string to the file and keep the linenumber up to date */
PRIVATE void tplt_print(FILE *out, struct lemon *lemp, char *str, int *lineno)




{
  if( str==0 ) return;
  while( *str ){
    putc(*str,out);
    if( *str=='\n' ) (*lineno)++;
    str++;
  }
................................................................................
  return;
}

/*
** The following routine emits code for the destructor for the
** symbol sp
*/
void emit_destructor_code(
  FILE *out,
  struct symbol *sp,
  struct lemon *lemp,
  int *lineno

){
 char *cp = 0;

 if( sp->type==TERMINAL ){
   cp = lemp->tokendest;
   if( cp==0 ) return;
   fprintf(out,"{\n"); (*lineno)++;
 }else if( sp->destructor ){
................................................................................
 fprintf(out,"}\n"); (*lineno)++;
 return;
}

/*
** Return TRUE (non-zero) if the given symbol has a destructor.
*/
int has_destructor(struct symbol *sp, struct lemon *lemp)


{
  int ret;
  if( sp->type==TERMINAL ){
    ret = lemp->tokendest!=0;
  }else{
    ret = lemp->vardest!=0 || sp->destructor!=0;
  }
................................................................................
** n bytes of zText are stored.  If n==0 then all of zText up to the first
** \000 terminator is stored.  zText can contain up to two instances of
** %d.  The values of p1 and p2 are written into the first and second
** %d.
**
** If n==-1, then the previous character is overwritten.
*/
PRIVATE char *append_str(const char *zText, int n, int p1, int p2){
  static char empty[1] = { 0 };
  static char *z = 0;
  static int alloced = 0;
  static int used = 0;
  int c;
  char zInt[40];

  if( zText==0 ){
    used = 0;
    return z;
  }
  if( n<=0 ){
    if( n<0 ){
      used += n;
      assert( used>=0 );
    }
    n = lemonStrlen(zText);
  }
  if( n+sizeof(zInt)*2+used >= alloced ){
    alloced = n + sizeof(zInt)*2 + used + 200;
    z = (char *) realloc(z,  alloced);
  }
  if( z==0 ) return empty;
  while( n-- > 0 ){
    c = *(zText++);
    if( c=='%' && n>0 && zText[0]=='d' ){
      sprintf(zInt, "%d", p1);
      p1 = p2;
      strcpy(&z[used], zInt);
      used += lemonStrlen(&z[used]);
................................................................................
  char lhsused = 0;    /* True if the LHS element has been used */
  char used[MAXRHS];   /* True for each RHS element which is used */

  for(i=0; i<rp->nrhs; i++) used[i] = 0;
  lhsused = 0;

  if( rp->code==0 ){
    static char newlinestr[2] = { '\n', '\0' };
    rp->code = newlinestr;
    rp->line = rp->ruleline;
  }

  append_str(0,0,0,0);

  /* This const cast is wrong but harmless, if we're careful. */
  for(cp=(char *)rp->code; *cp; cp++){
    if( isalpha(*cp) && (cp==rp->code || (!isalnum(cp[-1]) && cp[-1]!='_')) ){
      char saved;
      for(xp= &cp[1]; isalnum(*xp) || *xp=='_'; xp++);
      saved = *xp;
      *xp = 0;
      if( rp->lhsalias && strcmp(cp,rp->lhsalias)==0 ){
        append_str("yygotominor.yy%d",0,rp->lhs->dtnum,0);
................................................................................
  }
}

/* 
** Generate code which executes when the rule "rp" is reduced.  Write
** the code to "out".  Make sure lineno stays up-to-date.
*/
PRIVATE void emit_code(
  FILE *out,
  struct rule *rp,
  struct lemon *lemp,
  int *lineno

){
 const char *cp;

 /* Generate code to do the reduce action */
 if( rp->code ){
   if (!lemp->nolinenosflag) { (*lineno)++; tplt_linedir(out,rp->line,lemp->filename); }
   fprintf(out,"{%s",rp->code);
   for(cp=rp->code; *cp; cp++){
     if( *cp=='\n' ) (*lineno)++;
................................................................................
/*
** Print the definition of the union used for the parser's data stack.
** This union contains fields for every possible data type for tokens
** and nonterminals.  In the process of computing and printing this
** union, also set the ".dtnum" field of every terminal and nonterminal
** symbol.
*/
void print_stack_union(
  FILE *out,                  /* The output stream */
  struct lemon *lemp,         /* The main info structure for this parser */
  int *plineno,               /* Pointer to the line number */
  int mhflag                  /* True if generating makeheaders output */

){
  int lineno = *plineno;    /* The line number of the output */
  char **types;             /* A hash table of datatypes */
  int arraysize;            /* Size of the "types" array */
  int maxdtlength;          /* Maximum length of any ".datatype" field. */
  char *stddt;              /* Standardized name for a datatype */
  int i,j;                  /* Loop counters */
  int hash;                 /* For hashing the name of a type */
  const char *name;         /* Name of the parser */

  /* Allocate and initialize types[] and allocate stddt[] */
  arraysize = lemp->nsymbol * 2;
  types = (char**)calloc( arraysize, sizeof(char*) );
  for(i=0; i<arraysize; i++) types[i] = 0;
  maxdtlength = 0;
  if( lemp->vartype ){
................................................................................
      }
    }
  }
}


/* Generate C source code for the parser */
void ReportTable(
  struct lemon *lemp,
  int mhflag     /* Output in makeheaders format if true */

){
  FILE *out, *in;
  char line[LINESIZE];
  int  lineno;
  struct state *stp;
  struct action *ap;
  struct rule *rp;
  struct acttab *pActtab;
  int i, j, n;
  const char *name;
  int mnTknOfst, mxTknOfst;
  int mnNtOfst, mxNtOfst;
  struct axset *ax;

  in = tplt_open(lemp);
  if( in==0 ) return;
  out = file_open(lemp,".c","wb");
................................................................................
    fprintf(out,"#include \"%s\"\n", name); lineno++;
    free(name);
  }
  tplt_xfer(lemp->name,in,out,&lineno);

  /* Generate #defines for all tokens */
  if( mhflag ){
    const char *prefix;
    fprintf(out,"#if INTERFACE\n"); lineno++;
    if( lemp->tokenprefix ) prefix = lemp->tokenprefix;
    else                    prefix = "";
    for(i=1; i<lemp->nterminal; i++){
      fprintf(out,"#define %s%-30s %2d\n",prefix,lemp->symbols[i]->name,i);
      lineno++;
    }
................................................................................
  **                     shifting terminals.
  **  yy_reduce_ofst[]   For each state, the offset into yy_action for
  **                     shifting non-terminals after a reduce.
  **  yy_default[]       Default action for each state.
  */

  /* Compute the actions on all states and count them up */
  ax = (struct axset *) calloc(lemp->nstate*2, sizeof(ax[0]));
  if( ax==0 ){
    fprintf(stderr,"malloc failed\n");
    exit(1);
  }
  for(i=0; i<lemp->nstate; i++){
    stp = lemp->sorted[i];
    ax[i*2].stp = stp;
................................................................................

  fclose(in);
  fclose(out);
  return;
}

/* Generate a header file for the parser */

void ReportHeader(struct lemon *lemp)
{
  FILE *out, *in;
  const char *prefix;
  char line[LINESIZE];
  char pattern[LINESIZE];
  int i;

  if( lemp->tokenprefix ) prefix = lemp->tokenprefix;
  else                    prefix = "";
  in = file_open(lemp,".h","rb");
................................................................................
/* Reduce the size of the action tables, if possible, by making use
** of defaults.
**
** In this version, we take the most frequent REDUCE action and make
** it the default.  Except, there is no default if the wildcard token
** is a possible look-ahead.
*/
void CompressTables(struct lemon *lemp)

{
  struct state *stp;
  struct action *ap, *ap2;
  struct rule *rp, *rp2, *rbest;
  int nbest, n;
  int i;
  int usesWildcard;
................................................................................
}


/*
** Renumber and resort states so that states with fewer choices
** occur at the end.  Except, keep state 0 as the first state.
*/

void ResortStates(struct lemon *lemp)
{
  int i;
  struct state *stp;
  struct action *ap;

  for(i=0; i<lemp->nstate; i++){
    stp = lemp->sorted[i];
................................................................................
/*
** Set manipulation routines for the LEMON parser generator.
*/

static int size = 0;

/* Set the set size */
void SetSize(int n)

{
  size = n+1;
}

/* Allocate a new set */
char *SetNew(){
  char *s;
................................................................................
    extern void memory_error();
    memory_error();
  }
  return s;
}

/* Deallocate a set */
void SetFree(char *s)

{
  free(s);
}

/* Add a new element to the set.  Return TRUE if the element was added
** and FALSE if it was already there. */
int SetAdd(char *s, int e)


{
  int rv;
  assert( e>=0 && e<size );
  rv = s[e];
  s[e] = 1;
  return !rv;
}

/* Add every element of s2 to s1.  Return TRUE if s1 changes. */
int SetUnion(char *s1, char *s2)


{
  int i, progress;
  progress = 0;
  for(i=0; i<size; i++){
    if( s2[i]==0 ) continue;
    if( s1[i]==0 ){
      progress = 1;
................................................................................
** Do not edit this file!  Instead, edit the specification
** file, then rerun aagen.
*/
/*
** Code for processing tables in the LEMON parser generator.
*/

PRIVATE int strhash(const char *x)

{
  int h = 0;
  while( *x) h = h*13 + *(x++);
  return h;
}

/* Works like strdup, sort of.  Save a string in malloced memory, but
** keep strings in a table so that the same string is not in more
** than one place.
*/
const char *Strsafe(const char *y)

{
  const char *z;
  char *cpy;

  if( y==0 ) return 0;
  z = Strsafe_find(y);
  if( z==0 && (cpy=(char *)malloc( lemonStrlen(y)+1 ))!=0 ){
    strcpy(cpy,y);
    z = cpy;
    Strsafe_insert(z);
  }
  MemoryCheck(z);
  return z;
}

/* There is one instance of the following structure for each
................................................................................
  struct s_x1node **ht;  /* Hash table for lookups */
};

/* There is one instance of this structure for every data element
** in an associative array of type "x1".
*/
typedef struct s_x1node {
  const char *data;        /* The data */
  struct s_x1node *next;   /* Next entry with the same hash */
  struct s_x1node **from;  /* Previous link */
} x1node;

/* There is only one instance of the array, which is the following */
static struct s_x1 *x1a;

................................................................................
      x1a->ht = (x1node**)&(x1a->tbl[1024]);
      for(i=0; i<1024; i++) x1a->ht[i] = 0;
    }
  }
}
/* Insert a new record into the array.  Return TRUE if successful.
** Prior data with the same key is NOT overwritten */
int Strsafe_insert(const char *data)

{
  x1node *np;
  int h;
  int ph;

  if( x1a==0 ) return 0;
  ph = strhash(data);
................................................................................
  x1a->ht[h] = np;
  np->from = &(x1a->ht[h]);
  return 1;
}

/* Return a pointer to data assigned to the given key.  Return NULL
** if no such key. */
const char *Strsafe_find(const char *key)

{
  int h;
  x1node *np;

  if( x1a==0 ) return 0;
  h = strhash(key) & (x1a->size-1);
  np = x1a->ht[h];
................................................................................
  }
  return np ? np->data : 0;
}

/* Return a pointer to the (terminal or nonterminal) symbol "x".
** Create a new symbol if this is the first time "x" has been seen.
*/
struct symbol *Symbol_new(const char *x)

{
  struct symbol *sp;

  sp = Symbol_find(x);
  if( sp==0 ){
    sp = (struct symbol *)calloc(1, sizeof(struct symbol) );
    MemoryCheck(sp);
................................................................................
** must sort before symbols that begin with lower case letters
** (non-terminals).  Other than that, the order does not matter.
**
** We find experimentally that leaving the symbols in their original
** order (the order they appeared in the grammar file) gives the
** smallest parser tables in SQLite.
*/
int Symbolcmpp(const void *_a, const void *_b)
{
  const struct symbol **a = (const struct symbol **) _a;
  const struct symbol **b = (const struct symbol **) _b;
  int i1 = (**a).index + 10000000*((**a).name[0]>'Z');
  int i2 = (**b).index + 10000000*((**b).name[0]>'Z');
  assert( i1!=i2 || strcmp((**a).name,(**b).name)==0 );
  return i1-i2;
}

/* There is one instance of the following structure for each
................................................................................
  struct s_x2node **ht;  /* Hash table for lookups */
};

/* There is one instance of this structure for every data element
** in an associative array of type "x2".
*/
typedef struct s_x2node {
  struct symbol *data;     /* The data */
  const char *key;         /* The key */
  struct s_x2node *next;   /* Next entry with the same hash */
  struct s_x2node **from;  /* Previous link */
} x2node;

/* There is only one instance of the array, which is the following */
static struct s_x2 *x2a;

................................................................................
      x2a->ht = (x2node**)&(x2a->tbl[128]);
      for(i=0; i<128; i++) x2a->ht[i] = 0;
    }
  }
}
/* Insert a new record into the array.  Return TRUE if successful.
** Prior data with the same key is NOT overwritten */

int Symbol_insert(struct symbol *data, const char *key)

{
  x2node *np;
  int h;
  int ph;

  if( x2a==0 ) return 0;
  ph = strhash(key);
................................................................................
  x2a->ht[h] = np;
  np->from = &(x2a->ht[h]);
  return 1;
}

/* Return a pointer to data assigned to the given key.  Return NULL
** if no such key. */
struct symbol *Symbol_find(const char *key)

{
  int h;
  x2node *np;

  if( x2a==0 ) return 0;
  h = strhash(key) & (x2a->size-1);
  np = x2a->ht[h];
................................................................................
    if( strcmp(np->key,key)==0 ) break;
    np = np->next;
  }
  return np ? np->data : 0;
}

/* Return the n-th data.  Return NULL if n is out of range. */
struct symbol *Symbol_Nth(int n)

{
  struct symbol *data;
  if( x2a && n>0 && n<=x2a->count ){
    data = x2a->tbl[n-1].data;
  }else{
    data = 0;
  }
................................................................................
  if( array ){
    for(i=0; i<size; i++) array[i] = x2a->tbl[i].data;
  }
  return array;
}

/* Compare two configurations */
int Configcmp(const char *_a,const char *_b)
{
  const struct config *a = (struct config *) _a;
  const struct config *b = (struct config *) _b;

  int x;
  x = a->rp->index - b->rp->index;
  if( x==0 ) x = a->dot - b->dot;
  return x;
}

/* Compare two states */
PRIVATE int statecmp(struct config *a, struct config *b)


{
  int rc;
  for(rc=0; rc==0 && a && b;  a=a->bp, b=b->bp){
    rc = a->rp->index - b->rp->index;
    if( rc==0 ) rc = a->dot - b->dot;
  }
  if( rc==0 ){
................................................................................
    if( a ) rc = 1;
    if( b ) rc = -1;
  }
  return rc;
}

/* Hash a state */
PRIVATE int statehash(struct config *a)

{
  int h=0;
  while( a ){
    h = h*571 + a->rp->index*37 + a->dot;
    a = a->bp;
  }
  return h;
}

/* Allocate a new state structure */
struct state *State_new()
{
  struct state *newstate;
  newstate = (struct state *)calloc(1, sizeof(struct state) );
  MemoryCheck(newstate);
  return newstate;
}

/* There is one instance of the following structure for each
** associative array of type "x3".
*/
struct s_x3 {
  int size;               /* The number of available slots. */
................................................................................
      x3a->ht = (x3node**)&(x3a->tbl[128]);
      for(i=0; i<128; i++) x3a->ht[i] = 0;
    }
  }
}
/* Insert a new record into the array.  Return TRUE if successful.
** Prior data with the same key is NOT overwritten */

int State_insert(struct state *data, struct config *key)

{
  x3node *np;
  int h;
  int ph;

  if( x3a==0 ) return 0;
  ph = statehash(key);
................................................................................
  x3a->ht[h] = np;
  np->from = &(x3a->ht[h]);
  return 1;
}

/* Return a pointer to data assigned to the given key.  Return NULL
** if no such key. */
struct state *State_find(struct config *key)

{
  int h;
  x3node *np;

  if( x3a==0 ) return 0;
  h = statehash(key) & (x3a->size-1);
  np = x3a->ht[h];
................................................................................
  if( array ){
    for(i=0; i<size; i++) array[i] = x3a->tbl[i].data;
  }
  return array;
}

/* Hash a configuration */
PRIVATE int confighash(struct config *a)

{
  int h=0;
  h = h*571 + a->rp->index*37 + a->dot;
  return h;
}

/* There is one instance of the following structure for each
................................................................................
      x4a->ht = (x4node**)&(x4a->tbl[64]);
      for(i=0; i<64; i++) x4a->ht[i] = 0;
    }
  }
}
/* Insert a new record into the array.  Return TRUE if successful.
** Prior data with the same key is NOT overwritten */
int Configtable_insert(struct config *data)

{
  x4node *np;
  int h;
  int ph;

  if( x4a==0 ) return 0;
  ph = confighash(data);
  h = ph & (x4a->size-1);
  np = x4a->ht[h];
  while( np ){
    if( Configcmp((const char *) np->data,(const char *) data)==0 ){
      /* An existing entry with the same key is found. */
      /* Fail because overwrite is not allows. */
      return 0;
    }
    np = np->next;
  }
  if( x4a->count>=x4a->size ){
................................................................................
  x4a->ht[h] = np;
  np->from = &(x4a->ht[h]);
  return 1;
}

/* Return a pointer to data assigned to the given key.  Return NULL
** if no such key. */
struct config *Configtable_find(struct config *key)

{
  int h;
  x4node *np;

  if( x4a==0 ) return 0;
  h = confighash(key) & (x4a->size-1);
  np = x4a->ht[h];
  while( np ){
    if( Configcmp((const char *) np->data,(const char *) key)==0 ) break;
    np = np->next;
  }
  return np ? np->data : 0;
}

/* Remove all data from the table.  Pass each data to the function "f"
** as it is removed.  ("f" may be null to avoid this step.) */
void Configtable_clear(int(*f)(struct config *))

{
  int i;
  if( x4a==0 || x4a->count==0 ) return;
  if( f ) for(i=0; i<x4a->count; i++) (*f)(x4a->tbl[i].data);
  for(i=0; i<x4a->size; i++) x4a->ht[i] = 0;
  x4a->count = 0;
  return;
}