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Overview
| Comment: | Add support for parsing C-style hexadecimal literals. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | hex-literal |
| Files: | files | file ages | folders |
| SHA1: | 34a1f38b7a23c64f5c6e5b34c19a20480be53961 |
| User & Date: | drh 2014-07-23 01:26:51 |
Context
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2014-07-23
| ||
| 01:56 | Test cases for hex literals. check-in: 19054339 user: drh tags: hex-literal | |
| 01:26 | Add support for parsing C-style hexadecimal literals. check-in: 34a1f38b user: drh tags: hex-literal | |
|
2014-07-22
| ||
| 22:46 | When running ANALYZE, it is not necessary to check the right-most key column for changes since that column will always change if none of the previous columns have. check-in: 48f40861 user: drh tags: trunk | |
Changes
Changes to src/tokenize.c.
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case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': {
testcase( z[0]=='0' ); testcase( z[0]=='1' ); testcase( z[0]=='2' );
testcase( z[0]=='3' ); testcase( z[0]=='4' ); testcase( z[0]=='5' );
testcase( z[0]=='6' ); testcase( z[0]=='7' ); testcase( z[0]=='8' );
testcase( z[0]=='9' );
*tokenType = TK_INTEGER;
for(i=0; sqlite3Isdigit(z[i]); i++){}
#ifndef SQLITE_OMIT_FLOATING_POINT
if( z[i]=='.' ){
i++;
while( sqlite3Isdigit(z[i]) ){ i++; }
*tokenType = TK_FLOAT;
}
|
> > > > > > |
266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 |
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': {
testcase( z[0]=='0' ); testcase( z[0]=='1' ); testcase( z[0]=='2' );
testcase( z[0]=='3' ); testcase( z[0]=='4' ); testcase( z[0]=='5' );
testcase( z[0]=='6' ); testcase( z[0]=='7' ); testcase( z[0]=='8' );
testcase( z[0]=='9' );
*tokenType = TK_INTEGER;
#ifndef SQLITE_OMIT_HEX_INTEGER
if( z[0]=='0' && (z[1]=='x' || z[1]=='X') && sqlite3Isxdigit(z[2]) ){
for(i=3; sqlite3Isxdigit(z[i]); i++){}
return i;
}
#endif
for(i=0; sqlite3Isdigit(z[i]); i++){}
#ifndef SQLITE_OMIT_FLOATING_POINT
if( z[i]=='.' ){
i++;
while( sqlite3Isdigit(z[i]) ){ i++; }
*tokenType = TK_FLOAT;
}
|
Changes to src/util.c.
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int sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){
register unsigned char *a, *b;
a = (unsigned char *)zLeft;
b = (unsigned char *)zRight;
while( N-- > 0 && *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; }
return N<0 ? 0 : UpperToLower[*a] - UpperToLower[*b];
}
/*
** The string z[] is an text representation of a real number.
** Convert this string to a double and write it into *pResult.
**
** The string z[] is length bytes in length (bytes, not characters) and
** uses the encoding enc. The string is not necessarily zero-terminated.
................................................................................
/* get sign of significand */
if( *z=='-' ){
sign = -1;
z+=incr;
}else if( *z=='+' ){
z+=incr;
}
/* skip leading zeroes */
while( z<zEnd && z[0]=='0' ) z+=incr, nDigits++;
/* copy max significant digits to significand */
while( z<zEnd && sqlite3Isdigit(*z) && s<((LARGEST_INT64-9)/10) ){
s = s*10 + (*z - '0');
................................................................................
testcase( c==(-1) );
testcase( c==0 );
testcase( c==(+1) );
}
return c;
}
/*
** Convert zNum to a 64-bit signed integer.
**
** If the zNum value is representable as a 64-bit twos-complement
** integer, then write that value into *pNum and return 0.
**
** If zNum is exactly 9223372036854775808, return 2. This special
................................................................................
if( zNum<zEnd ){
if( *zNum=='-' ){
neg = 1;
zNum+=incr;
}else if( *zNum=='+' ){
zNum+=incr;
}
}
zStart = zNum;
while( zNum<zEnd && zNum[0]=='0' ){ zNum+=incr; } /* Skip leading zeros. */
for(i=0; &zNum[i]<zEnd && (c=zNum[i])>='0' && c<='9'; i+=incr){
u = u*10 + c - '0';
}
if( u>LARGEST_INT64 ){
................................................................................
int neg = 0;
if( zNum[0]=='-' ){
neg = 1;
zNum++;
}else if( zNum[0]=='+' ){
zNum++;
}
while( zNum[0]=='0' ) zNum++;
for(i=0; i<11 && (c = zNum[i] - '0')>=0 && c<=9; i++){
v = v*10 + c;
}
/* The longest decimal representation of a 32 bit integer is 10 digits:
**
** 1234567890
................................................................................
void sqlite3Put4byte(unsigned char *p, u32 v){
p[0] = (u8)(v>>24);
p[1] = (u8)(v>>16);
p[2] = (u8)(v>>8);
p[3] = (u8)v;
}
/*
** Translate a single byte of Hex into an integer.
** This routine only works if h really is a valid hexadecimal
** character: 0..9a..fA..F
*/
u8 sqlite3HexToInt(int h){
assert( (h>='0' && h<='9') || (h>='a' && h<='f') || (h>='A' && h<='F') );
#ifdef SQLITE_ASCII
h += 9*(1&(h>>6));
#endif
#ifdef SQLITE_EBCDIC
h += 9*(1&~(h>>4));
#endif
return (u8)(h & 0xf);
}
#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
** Convert a BLOB literal of the form "x'hhhhhh'" into its binary
** value. Return a pointer to its binary value. Space to hold the
** binary value has been obtained from malloc and must be freed by
** the calling routine.
*/
|
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > < > > > > > > > > > > > > > > > > > > > > > > | > > > > > > > > > > > < < < < < < < < < < < < < < < < < < |
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int sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){
register unsigned char *a, *b;
a = (unsigned char *)zLeft;
b = (unsigned char *)zRight;
while( N-- > 0 && *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; }
return N<0 ? 0 : UpperToLower[*a] - UpperToLower[*b];
}
/*
** Translate a single byte of Hex into an integer.
** This routine only works if h really is a valid hexadecimal
** character: 0..9a..fA..F
*/
u8 sqlite3HexToInt(int h){
assert( (h>='0' && h<='9') || (h>='a' && h<='f') || (h>='A' && h<='F') );
#ifdef SQLITE_ASCII
h += 9*(1&(h>>6));
#endif
#ifdef SQLITE_EBCDIC
h += 9*(1&~(h>>4));
#endif
return (u8)(h & 0xf);
}
/*
** The string z[] is an text representation of a real number.
** Convert this string to a double and write it into *pResult.
**
** The string z[] is length bytes in length (bytes, not characters) and
** uses the encoding enc. The string is not necessarily zero-terminated.
................................................................................
/* get sign of significand */
if( *z=='-' ){
sign = -1;
z+=incr;
}else if( *z=='+' ){
z+=incr;
}
#ifndef SQLITE_OMIT_HEX_INTEGER
else if( *z==0
&& &z[incr*2]<zEnd
&& (z[incr]=='x' || z[incr]=='X')
&& sqlite3Isxdigit(z[incr*2])
){
result = 0.0;
for(z += incr*2; z<zEnd && sqlite3Isxdigit(z[0]); z += incr){
result = result*16.0 + sqlite3HexToInt(z[0]);
}
*pResult = result;
return z>=zEnd && nonNum==0;
}
#endif
/* skip leading zeroes */
while( z<zEnd && z[0]=='0' ) z+=incr, nDigits++;
/* copy max significant digits to significand */
while( z<zEnd && sqlite3Isdigit(*z) && s<((LARGEST_INT64-9)/10) ){
s = s*10 + (*z - '0');
................................................................................
testcase( c==(-1) );
testcase( c==0 );
testcase( c==(+1) );
}
return c;
}
/*
** Convert zNum to a 64-bit signed integer.
**
** If the zNum value is representable as a 64-bit twos-complement
** integer, then write that value into *pNum and return 0.
**
** If zNum is exactly 9223372036854775808, return 2. This special
................................................................................
if( zNum<zEnd ){
if( *zNum=='-' ){
neg = 1;
zNum+=incr;
}else if( *zNum=='+' ){
zNum+=incr;
}
#ifndef SQLITE_OMIT_HEX_INTEGER
else if( *zNum=='0'
&& &zNum[incr*2]<zEnd
&& (zNum[incr]=='x' || zNum[incr]=='X')
&& sqlite3Isxdigit(zNum[incr*2])
){
zNum += incr*2;
while( zNum<zEnd && zNum[0]=='0' ) zNum += incr;
for(i=0; &zNum[i]<zEnd && sqlite3Isxdigit(zNum[i]); i+=incr){
u = u*16 + sqlite3HexToInt(zNum[i]);
}
memcpy(pNum, &u, 8);
return &zNum[i]<zEnd || i>16*incr || nonNum;
}
#endif
}
zStart = zNum;
while( zNum<zEnd && zNum[0]=='0' ){ zNum+=incr; } /* Skip leading zeros. */
for(i=0; &zNum[i]<zEnd && (c=zNum[i])>='0' && c<='9'; i+=incr){
u = u*10 + c - '0';
}
if( u>LARGEST_INT64 ){
................................................................................
int neg = 0;
if( zNum[0]=='-' ){
neg = 1;
zNum++;
}else if( zNum[0]=='+' ){
zNum++;
}
#ifndef SQLITE_OMIT_HEX_INTEGER
else if( zNum[0]=='0'
&& (zNum[1]=='x' || zNum[1]=='X')
&& sqlite3Isxdigit(zNum[2])
){
u32 u = 0;
zNum += 2;
while( zNum[0]=='0' ) zNum++;
for(i=0; sqlite3Isxdigit(zNum[i]) && i<8; i++){
u = u*16 + sqlite3HexToInt(zNum[i]);
}
if( (u&0x80000000)==0 && sqlite3Isxdigit(zNum[i])==0 ){
memcpy(pValue, &u, 4);
return 1;
}else{
return 0;
}
}
#endif
for(i=0; i<11 && (c = zNum[i] - '0')>=0 && c<=9; i++){
v = v*10 + c;
}
/* The longest decimal representation of a 32 bit integer is 10 digits:
**
** 1234567890
................................................................................
void sqlite3Put4byte(unsigned char *p, u32 v){
p[0] = (u8)(v>>24);
p[1] = (u8)(v>>16);
p[2] = (u8)(v>>8);
p[3] = (u8)v;
}
#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
** Convert a BLOB literal of the form "x'hhhhhh'" into its binary
** value. Return a pointer to its binary value. Space to hold the
** binary value has been obtained from malloc and must be freed by
** the calling routine.
*/
|