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Overview
Comment:In Lemon, if a non-terminal has the same type as a terminal, then reuse the terminal type in the YYMINORTYPE union for the non-terminal. This gives better table compression. (CVS 5334)
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SHA1: 5c9cc22cd8e9bec3d8622d2c354423281f2db0fb
User & Date: drh 2008-07-01 16:34:50.000
Context
2008-07-01
17:13
In lemon: coalesce identical destructors. (CVS 5335) (check-in: 3447086cd3 user: drh tags: trunk)
16:34
In Lemon, if a non-terminal has the same type as a terminal, then reuse the terminal type in the YYMINORTYPE union for the non-terminal. This gives better table compression. (CVS 5334) (check-in: 5c9cc22cd8 user: drh tags: trunk)
16:05
Fix a memory leak to do with the recent UNION ALL sub-select optimization. (CVS 5333) (check-in: 6ee71f4ddb user: danielk1977 tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to tool/lemon.c.
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    cp = sp->datatype;
    if( cp==0 ) cp = lemp->vartype;
    j = 0;
    while( isspace(*cp) ) cp++;
    while( *cp ) stddt[j++] = *cp++;
    while( j>0 && isspace(stddt[j-1]) ) j--;
    stddt[j] = 0;




    hash = 0;
    for(j=0; stddt[j]; j++){
      hash = hash*53 + stddt[j];
    }
    hash = (hash & 0x7fffffff)%arraysize;
    while( types[hash] ){
      if( strcmp(types[hash],stddt)==0 ){







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    cp = sp->datatype;
    if( cp==0 ) cp = lemp->vartype;
    j = 0;
    while( isspace(*cp) ) cp++;
    while( *cp ) stddt[j++] = *cp++;
    while( j>0 && isspace(stddt[j-1]) ) j--;
    stddt[j] = 0;
    if( strcmp(stddt, lemp->tokentype)==0 ){
      sp->dtnum = 0;
      continue;
    }
    hash = 0;
    for(j=0; stddt[j]; j++){
      hash = hash*53 + stddt[j];
    }
    hash = (hash & 0x7fffffff)%arraysize;
    while( types[hash] ){
      if( strcmp(types[hash],stddt)==0 ){