Aer Interpreter Source
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/*
* Symisc PH7: An embeddable bytecode compiler and a virtual machine for the PHP(5) programming language.
* Copyright (C) 2011-2012, Symisc Systems http://ph7.symisc.net/
* Version 2.1.4
* For information on licensing,redistribution of this file,and for a DISCLAIMER OF ALL WARRANTIES
* please contact Symisc Systems via:
* legal@symisc.net
* licensing@symisc.net
* contact@symisc.net
* or visit:
* http://ph7.symisc.net/
*/
/* $SymiscID: lex.c v2.8 Ubuntu-linux 2012-07-13 01:21 stable <chm@symisc.net> $ */
#include "ph7int.h"
/*
* This file implement an efficient hand-coded,thread-safe and full-reentrant
* lexical analyzer/Tokenizer for the PH7 engine.
*/
/* Forward declaration */
static sxu32 KeywordCode(const char *z, int n);
static sxi32 LexExtractHeredoc(SyStream *pStream,SyToken *pToken);
/*
* Tokenize a raw PHP input.
* Get a single low-level token from the input file. Update the stream pointer so that
* it points to the first character beyond the extracted token.
*/
static sxi32 TokenizePHP(SyStream *pStream,SyToken *pToken,void *pUserData,void *pCtxData)
{
SyString *pStr;
sxi32 rc;
/* Ignore leading white spaces */
while( pStream->zText < pStream->zEnd && pStream->zText[0] < 0xc0 && SyisSpace(pStream->zText[0]) ){
/* Advance the stream cursor */
if( pStream->zText[0] == '\n' ){
/* Update line counter */
pStream->nLine++;
}
pStream->zText++;
}
if( pStream->zText >= pStream->zEnd ){
/* End of input reached */
return SXERR_EOF;
}
/* Record token starting position and line */
pToken->nLine = pStream->nLine;
pToken->pUserData = 0;
pStr = &pToken->sData;
SyStringInitFromBuf(pStr,pStream->zText,0);
if( pStream->zText[0] >= 0xc0 || SyisAlpha(pStream->zText[0]) || pStream->zText[0] == '_' ){
/* The following code fragment is taken verbatim from the xPP source tree.
* xPP is a modern embeddable macro processor with advanced features useful for
* application seeking for a production quality,ready to use macro processor.
* xPP is a widely used library developed and maintened by Symisc Systems.
* You can reach the xPP home page by following this link:
* http://xpp.symisc.net/
*/
const unsigned char *zIn;
sxu32 nKeyword;
/* Isolate UTF-8 or alphanumeric stream */
if( pStream->zText[0] < 0xc0 ){
pStream->zText++;
}
for(;;){
zIn = pStream->zText;
if( zIn[0] >= 0xc0 ){
zIn++;
/* UTF-8 stream */
while( zIn < pStream->zEnd && ((zIn[0] & 0xc0) == 0x80) ){
zIn++;
}
}
/* Skip alphanumeric stream */
while( zIn < pStream->zEnd && zIn[0] < 0xc0 && (SyisAlphaNum(zIn[0]) || zIn[0] == '_') ){
zIn++;
}
if( zIn == pStream->zText ){
/* Not an UTF-8 or alphanumeric stream */
break;
}
/* Synchronize pointers */
pStream->zText = zIn;
}
/* Record token length */
pStr->nByte = (sxu32)((const char *)pStream->zText-pStr->zString);
nKeyword = KeywordCode(pStr->zString,(int)pStr->nByte);
if( nKeyword != PH7_TK_ID ){
if( nKeyword &
(PH7_TKWRD_NEW|PH7_TKWRD_CLONE|PH7_TKWRD_AND|PH7_TKWRD_XOR|PH7_TKWRD_OR|PH7_TKWRD_INSTANCEOF|PH7_TKWRD_SEQ|PH7_TKWRD_SNE) ){
/* Alpha stream operators [i.e: new,clone,and,instanceof,eq,ne,or,xor],save the operator instance for later processing */
pToken->pUserData = (void *)PH7_ExprExtractOperator(pStr,0);
/* Mark as an operator */
pToken->nType = PH7_TK_ID|PH7_TK_OP;
}else{
/* We are dealing with a keyword [i.e: while,foreach,class...],save the keyword ID */
pToken->nType = PH7_TK_KEYWORD;
pToken->pUserData = SX_INT_TO_PTR(nKeyword);
}
}else{
/* A simple identifier */
pToken->nType = PH7_TK_ID;
}
}else{
sxi32 c;
/* Non-alpha stream */
if( pStream->zText[0] == '#' ||
( pStream->zText[0] == '/' && &pStream->zText[1] < pStream->zEnd && pStream->zText[1] == '/') ){
pStream->zText++;
/* Inline comments */
while( pStream->zText < pStream->zEnd && pStream->zText[0] != '\n' ){
pStream->zText++;
}
/* Tell the upper-layer to ignore this token */
return SXERR_CONTINUE;
}else if( pStream->zText[0] == '/' && &pStream->zText[1] < pStream->zEnd && pStream->zText[1] == '*' ){
pStream->zText += 2;
/* Block comment */
while( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '*' ){
if( &pStream->zText[1] >= pStream->zEnd || pStream->zText[1] == '/' ){
break;
}
}
if( pStream->zText[0] == '\n' ){
pStream->nLine++;
}
pStream->zText++;
}
pStream->zText += 2;
/* Tell the upper-layer to ignore this token */
return SXERR_CONTINUE;
}else if( SyisDigit(pStream->zText[0]) ){
pStream->zText++;
/* Decimal digit stream */
while( pStream->zText < pStream->zEnd && pStream->zText[0] < 0xc0 && SyisDigit(pStream->zText[0]) ){
pStream->zText++;
}
/* Mark the token as integer until we encounter a real number */
pToken->nType = PH7_TK_INTEGER;
if( pStream->zText < pStream->zEnd ){
c = pStream->zText[0];
if( c == '.' ){
/* Real number */
pStream->zText++;
while( pStream->zText < pStream->zEnd && pStream->zText[0] < 0xc0 && SyisDigit(pStream->zText[0]) ){
pStream->zText++;
}
if( pStream->zText < pStream->zEnd ){
c = pStream->zText[0];
if( c=='e' || c=='E' ){
pStream->zText++;
if( pStream->zText < pStream->zEnd ){
c = pStream->zText[0];
if( (c =='+' || c=='-') && &pStream->zText[1] < pStream->zEnd &&
pStream->zText[1] < 0xc0 && SyisDigit(pStream->zText[1]) ){
pStream->zText++;
}
while( pStream->zText < pStream->zEnd && pStream->zText[0] < 0xc0 && SyisDigit(pStream->zText[0]) ){
pStream->zText++;
}
}
}
}
pToken->nType = PH7_TK_REAL;
}else if( c=='e' || c=='E' ){
SXUNUSED(pUserData); /* Prevent compiler warning */
SXUNUSED(pCtxData);
pStream->zText++;
if( pStream->zText < pStream->zEnd ){
c = pStream->zText[0];
if( (c =='+' || c=='-') && &pStream->zText[1] < pStream->zEnd &&
pStream->zText[1] < 0xc0 && SyisDigit(pStream->zText[1]) ){
pStream->zText++;
}
while( pStream->zText < pStream->zEnd && pStream->zText[0] < 0xc0 && SyisDigit(pStream->zText[0]) ){
pStream->zText++;
}
}
pToken->nType = PH7_TK_REAL;
}else if( c == 'x' || c == 'X' ){
/* Hex digit stream */
pStream->zText++;
while( pStream->zText < pStream->zEnd && pStream->zText[0] < 0xc0 && SyisHex(pStream->zText[0]) ){
pStream->zText++;
}
}else if(c == 'b' || c == 'B' ){
/* Binary digit stream */
pStream->zText++;
while( pStream->zText < pStream->zEnd && (pStream->zText[0] == '0' || pStream->zText[0] == '1') ){
pStream->zText++;
}
}
}
/* Record token length */
pStr->nByte = (sxu32)((const char *)pStream->zText-pStr->zString);
return SXRET_OK;
}
c = pStream->zText[0];
pStream->zText++; /* Advance the stream cursor */
/* Assume we are dealing with an operator*/
pToken->nType = PH7_TK_OP;
switch(c){
case '$': pToken->nType = PH7_TK_DOLLAR; break;
case '{': pToken->nType = PH7_TK_OCB; break;
case '}': pToken->nType = PH7_TK_CCB; break;
case '(': pToken->nType = PH7_TK_LPAREN; break;
case '[': pToken->nType |= PH7_TK_OSB; break; /* Bitwise operation here,since the square bracket token '['
* is a potential operator [i.e: subscripting] */
case ']': pToken->nType = PH7_TK_CSB; break;
case ')': {
SySet *pTokSet = pStream->pSet;
/* Assemble type cast operators [i.e: (int),(float),(bool)...] */
if( pTokSet->nUsed >= 2 ){
SyToken *pTmp;
/* Peek the last recongnized token */
pTmp = (SyToken *)SySetPeek(pTokSet);
if( pTmp->nType & PH7_TK_KEYWORD ){
sxi32 nID = SX_PTR_TO_INT(pTmp->pUserData);
if( (sxu32)nID & (PH7_TKWRD_ARRAY|PH7_TKWRD_INT|PH7_TKWRD_FLOAT|PH7_TKWRD_STRING|PH7_TKWRD_OBJECT|PH7_TKWRD_BOOL|PH7_TKWRD_UNSET) ){
pTmp = (SyToken *)SySetAt(pTokSet,pTokSet->nUsed - 2);
if( pTmp->nType & PH7_TK_LPAREN ){
/* Merge the three tokens '(' 'TYPE' ')' into a single one */
const char * zTypeCast = "(int)";
if( nID & PH7_TKWRD_FLOAT ){
zTypeCast = "(float)";
}else if( nID & PH7_TKWRD_BOOL ){
zTypeCast = "(bool)";
}else if( nID & PH7_TKWRD_STRING ){
zTypeCast = "(string)";
}else if( nID & PH7_TKWRD_ARRAY ){
zTypeCast = "(array)";
}else if( nID & PH7_TKWRD_OBJECT ){
zTypeCast = "(object)";
}else if( nID & PH7_TKWRD_UNSET ){
zTypeCast = "(unset)";
}
/* Reflect the change */
pToken->nType = PH7_TK_OP;
SyStringInitFromBuf(&pToken->sData,zTypeCast,SyStrlen(zTypeCast));
/* Save the instance associated with the type cast operator */
pToken->pUserData = (void *)PH7_ExprExtractOperator(&pToken->sData,0);
/* Remove the two previous tokens */
pTokSet->nUsed -= 2;
return SXRET_OK;
}
}
}
}
pToken->nType = PH7_TK_RPAREN;
break;
}
case '\'':{
/* Single quoted string */
pStr->zString++;
while( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '\'' ){
if( pStream->zText[-1] != '\\' ){
break;
}else{
const unsigned char *zPtr = &pStream->zText[-2];
sxi32 i = 1;
while( zPtr > pStream->zInput && zPtr[0] == '\\' ){
zPtr--;
i++;
}
if((i&1)==0){
break;
}
}
}
if( pStream->zText[0] == '\n' ){
pStream->nLine++;
}
pStream->zText++;
}
/* Record token length and type */
pStr->nByte = (sxu32)((const char *)pStream->zText-pStr->zString);
pToken->nType = PH7_TK_SSTR;
/* Jump the trailing single quote */
pStream->zText++;
return SXRET_OK;
}
case '"':{
sxi32 iNest;
/* Double quoted string */
pStr->zString++;
while( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '{' && &pStream->zText[1] < pStream->zEnd && pStream->zText[1] == '$'){
iNest = 1;
pStream->zText++;
/* TICKET 1433-40: Hnadle braces'{}' in double quoted string where everything is allowed */
while(pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '{' ){
iNest++;
}else if (pStream->zText[0] == '}' ){
iNest--;
if( iNest <= 0 ){
pStream->zText++;
break;
}
}else if( pStream->zText[0] == '\n' ){
pStream->nLine++;
}
pStream->zText++;
}
if( pStream->zText >= pStream->zEnd ){
break;
}
}
if( pStream->zText[0] == '"' ){
if( pStream->zText[-1] != '\\' ){
break;
}else{
const unsigned char *zPtr = &pStream->zText[-2];
sxi32 i = 1;
while( zPtr > pStream->zInput && zPtr[0] == '\\' ){
zPtr--;
i++;
}
if((i&1)==0){
break;
}
}
}
if( pStream->zText[0] == '\n' ){
pStream->nLine++;
}
pStream->zText++;
}
/* Record token length and type */
pStr->nByte = (sxu32)((const char *)pStream->zText-pStr->zString);
pToken->nType = PH7_TK_DSTR;
/* Jump the trailing quote */
pStream->zText++;
return SXRET_OK;
}
case '`':{
/* Backtick quoted string */
pStr->zString++;
while( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '`' && pStream->zText[-1] != '\\' ){
break;
}
if( pStream->zText[0] == '\n' ){
pStream->nLine++;
}
pStream->zText++;
}
/* Record token length and type */
pStr->nByte = (sxu32)((const char *)pStream->zText-pStr->zString);
pToken->nType = PH7_TK_BSTR;
/* Jump the trailing backtick */
pStream->zText++;
return SXRET_OK;
}
case '\\': pToken->nType = PH7_TK_NSSEP; break;
case ':':
if( pStream->zText < pStream->zEnd && pStream->zText[0] == ':' ){
/* Current operator: '::' */
pStream->zText++;
}else{
pToken->nType = PH7_TK_COLON; /* Single colon */
}
break;
case ',': pToken->nType |= PH7_TK_COMMA; break; /* Comma is also an operator */
case ';': pToken->nType = PH7_TK_SEMI; break;
/* Handle combined operators [i.e: +=,===,!=== ...] */
case '=':
pToken->nType |= PH7_TK_EQUAL;
if( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '=' ){
pToken->nType &= ~PH7_TK_EQUAL;
/* Current operator: == */
pStream->zText++;
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: === */
pStream->zText++;
}
}else if( pStream->zText[0] == '>' ){
/* Array operator: => */
pToken->nType = PH7_TK_ARRAY_OP;
pStream->zText++;
}else{
/* TICKET 1433-0010: Reference operator '=&' */
const unsigned char *zCur = pStream->zText;
sxu32 nLine = 0;
while( zCur < pStream->zEnd && zCur[0] < 0xc0 && SyisSpace(zCur[0]) ){
if( zCur[0] == '\n' ){
nLine++;
}
zCur++;
}
if( zCur < pStream->zEnd && zCur[0] == '&' ){
/* Current operator: =& */
pToken->nType &= ~PH7_TK_EQUAL;
SyStringInitFromBuf(pStr,"=&",sizeof("=&")-1);
/* Update token stream */
pStream->zText = &zCur[1];
pStream->nLine += nLine;
}
}
}
break;
case '!':
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: != */
pStream->zText++;
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: !== */
pStream->zText++;
}
}
break;
case '&':
pToken->nType |= PH7_TK_AMPER;
if( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '&' ){
pToken->nType &= ~PH7_TK_AMPER;
/* Current operator: && */
pStream->zText++;
}else if( pStream->zText[0] == '=' ){
pToken->nType &= ~PH7_TK_AMPER;
/* Current operator: &= */
pStream->zText++;
}
}
break;
case '|':
if( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '|' ){
/* Current operator: || */
pStream->zText++;
}else if( pStream->zText[0] == '=' ){
/* Current operator: |= */
pStream->zText++;
}
}
break;
case '+':
if( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '+' ){
/* Current operator: ++ */
pStream->zText++;
}else if( pStream->zText[0] == '=' ){
/* Current operator: += */
pStream->zText++;
}
}
break;
case '-':
if( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '-' ){
/* Current operator: -- */
pStream->zText++;
}else if( pStream->zText[0] == '=' ){
/* Current operator: -= */
pStream->zText++;
}else if( pStream->zText[0] == '>' ){
/* Current operator: -> */
pStream->zText++;
}
}
break;
case '*':
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: *= */
pStream->zText++;
}
break;
case '/':
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: /= */
pStream->zText++;
}
break;
case '%':
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: %= */
pStream->zText++;
}
break;
case '^':
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: ^= */
pStream->zText++;
}
break;
case '.':
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: .= */
pStream->zText++;
}
break;
case '<':
if( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '<' ){
/* Current operator: << */
pStream->zText++;
if( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '=' ){
/* Current operator: <<= */
pStream->zText++;
}else if( pStream->zText[0] == '<' ){
/* Current Token: <<< */
pStream->zText++;
/* This may be the beginning of a Heredoc/Nowdoc string,try to delimit it */
rc = LexExtractHeredoc(&(*pStream),&(*pToken));
if( rc == SXRET_OK ){
/* Here/Now doc successfuly extracted */
return SXRET_OK;
}
}
}
}else if( pStream->zText[0] == '>' ){
/* Current operator: <> */
pStream->zText++;
}else if( pStream->zText[0] == '=' ){
/* Current operator: <= */
pStream->zText++;
}
}
break;
case '>':
if( pStream->zText < pStream->zEnd ){
if( pStream->zText[0] == '>' ){
/* Current operator: >> */
pStream->zText++;
if( pStream->zText < pStream->zEnd && pStream->zText[0] == '=' ){
/* Current operator: >>= */
pStream->zText++;
}
}else if( pStream->zText[0] == '=' ){
/* Current operator: >= */
pStream->zText++;
}
}
break;
default:
break;
}
if( pStr->nByte <= 0 ){
/* Record token length */
pStr->nByte = (sxu32)((const char *)pStream->zText-pStr->zString);
}
if( pToken->nType & PH7_TK_OP ){
const ph7_expr_op *pOp;
/* Check if the extracted token is an operator */
pOp = PH7_ExprExtractOperator(pStr,(SyToken *)SySetPeek(pStream->pSet));
if( pOp == 0 ){
/* Not an operator */
pToken->nType &= ~PH7_TK_OP;
if( pToken->nType <= 0 ){
pToken->nType = PH7_TK_OTHER;
}
}else{
/* Save the instance associated with this operator for later processing */
pToken->pUserData = (void *)pOp;
}
}
}
/* Tell the upper-layer to save the extracted token for later processing */
return SXRET_OK;
}
/***** This file contains automatically generated code ******
**
** The code in this file has been automatically generated by
**
** $Header: /sqlite/sqlite/tool/mkkeywordhash.c
**
** Sligthly modified by Chems mrad <chm@symisc.net> for the PH7 engine.
**
** The code in this file implements a function that determines whether
** or not a given identifier is really a PHP keyword. The same thing
** might be implemented more directly using a hand-written hash table.
** But by using this automatically generated code, the size of the code
** is substantially reduced. This is important for embedded applications
** on platforms with limited memory.
*/
/* Hash score: 103 */
static sxu32 KeywordCode(const char *z, int n){
/* zText[] encodes 532 bytes of keywords in 333 bytes */
/* extendswitchprintegerequire_oncenddeclareturnamespacechobject */
/* hrowbooleandefaultrycaselfinalistaticlonewconstringlobaluse */
/* lseifloatvarrayANDIEchoUSECHOabstractclasscontinuendifunction */
/* diendwhilevaldoexitgotoimplementsinclude_oncemptyinstanceof */
/* interfacendforeachissetparentprivateprotectedpublicatchunset */
/* xorARRAYASArrayEXITUNSETXORbreak */
static const char zText[332] = {
'e','x','t','e','n','d','s','w','i','t','c','h','p','r','i','n','t','e',
'g','e','r','e','q','u','i','r','e','_','o','n','c','e','n','d','d','e',
'c','l','a','r','e','t','u','r','n','a','m','e','s','p','a','c','e','c',
'h','o','b','j','e','c','t','h','r','o','w','b','o','o','l','e','a','n',
'd','e','f','a','u','l','t','r','y','c','a','s','e','l','f','i','n','a',
'l','i','s','t','a','t','i','c','l','o','n','e','w','c','o','n','s','t',
'r','i','n','g','l','o','b','a','l','u','s','e','l','s','e','i','f','l',
'o','a','t','v','a','r','r','a','y','A','N','D','I','E','c','h','o','U',
'S','E','C','H','O','a','b','s','t','r','a','c','t','c','l','a','s','s',
'c','o','n','t','i','n','u','e','n','d','i','f','u','n','c','t','i','o',
'n','d','i','e','n','d','w','h','i','l','e','v','a','l','d','o','e','x',
'i','t','g','o','t','o','i','m','p','l','e','m','e','n','t','s','i','n',
'c','l','u','d','e','_','o','n','c','e','m','p','t','y','i','n','s','t',
'a','n','c','e','o','f','i','n','t','e','r','f','a','c','e','n','d','f',
'o','r','e','a','c','h','i','s','s','e','t','p','a','r','e','n','t','p',
'r','i','v','a','t','e','p','r','o','t','e','c','t','e','d','p','u','b',
'l','i','c','a','t','c','h','u','n','s','e','t','x','o','r','A','R','R',
'A','Y','A','S','A','r','r','a','y','E','X','I','T','U','N','S','E','T',
'X','O','R','b','r','e','a','k'
};
static const unsigned char aHash[151] = {
0, 0, 4, 83, 0, 61, 39, 12, 0, 33, 77, 0, 48,
0, 2, 65, 67, 0, 0, 0, 47, 0, 0, 40, 0, 15,
74, 0, 51, 0, 76, 0, 0, 20, 0, 0, 0, 50, 0,
80, 34, 0, 36, 0, 0, 64, 16, 0, 0, 17, 0, 1,
19, 84, 66, 0, 43, 45, 78, 0, 0, 53, 56, 0, 0,
0, 23, 49, 0, 0, 13, 31, 54, 7, 0, 0, 25, 0,
72, 14, 0, 71, 0, 38, 6, 0, 0, 0, 73, 0, 0,
3, 0, 41, 5, 52, 57, 32, 0, 60, 63, 0, 69, 82,
30, 0, 79, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 81, 0, 0,
62, 0, 11, 0, 0, 58, 0, 0, 0, 0, 59, 75, 0,
0, 0, 0, 0, 0, 35, 27, 0
};
static const unsigned char aNext[84] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 8, 0, 0, 0, 10, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 44, 0, 18, 0, 0, 0, 0, 0,
0, 46, 0, 29, 0, 0, 0, 22, 0, 0, 0, 0, 26,
0, 21, 24, 0, 0, 68, 0, 0, 9, 37, 0, 0, 0,
42, 0, 0, 0, 70, 55
};
static const unsigned char aLen[84] = {
7, 9, 6, 5, 7, 12, 7, 2, 10, 7, 6, 9, 4,
6, 5, 7, 4, 3, 7, 3, 4, 4, 5, 4, 6, 5,
2, 3, 5, 6, 6, 3, 6, 4, 2, 5, 3, 5, 3,
3, 4, 3, 4, 8, 5, 2, 8, 5, 8, 3, 8, 5,
4, 2, 4, 4, 10, 12, 7, 5, 10, 9, 3, 6, 10,
3, 7, 2, 5, 6, 7, 9, 6, 5, 5, 3, 5, 2,
5, 4, 5, 3, 2, 5
};
static const sxu16 aOffset[84] = {
0, 3, 6, 12, 14, 20, 20, 21, 31, 34, 39, 44, 52,
55, 60, 65, 65, 70, 72, 78, 81, 83, 86, 90, 92, 97,
100, 100, 103, 106, 111, 117, 119, 119, 123, 124, 129, 130, 135,
137, 139, 143, 145, 149, 157, 159, 162, 169, 173, 181, 183, 186,
190, 194, 196, 200, 204, 214, 214, 225, 230, 240, 240, 248, 248,
251, 251, 252, 258, 263, 269, 276, 285, 290, 295, 300, 303, 308,
310, 315, 319, 324, 325, 327
};
static const sxu32 aCode[84] = {
PH7_TKWRD_EXTENDS, PH7_TKWRD_ENDSWITCH, PH7_TKWRD_SWITCH, PH7_TKWRD_PRINT, PH7_TKWRD_INT,
PH7_TKWRD_REQONCE, PH7_TKWRD_REQUIRE, PH7_TKWRD_SEQ, PH7_TKWRD_ENDDEC, PH7_TKWRD_DECLARE,
PH7_TKWRD_RETURN, PH7_TKWRD_NAMESPACE, PH7_TKWRD_ECHO, PH7_TKWRD_OBJECT, PH7_TKWRD_THROW,
PH7_TKWRD_BOOL, PH7_TKWRD_BOOL, PH7_TKWRD_AND, PH7_TKWRD_DEFAULT, PH7_TKWRD_TRY,
PH7_TKWRD_CASE, PH7_TKWRD_SELF, PH7_TKWRD_FINAL, PH7_TKWRD_LIST, PH7_TKWRD_STATIC,
PH7_TKWRD_CLONE, PH7_TKWRD_SNE, PH7_TKWRD_NEW, PH7_TKWRD_CONST, PH7_TKWRD_STRING,
PH7_TKWRD_GLOBAL, PH7_TKWRD_USE, PH7_TKWRD_ELIF, PH7_TKWRD_ELSE, PH7_TKWRD_IF,
PH7_TKWRD_FLOAT, PH7_TKWRD_VAR, PH7_TKWRD_ARRAY, PH7_TKWRD_AND, PH7_TKWRD_DIE,
PH7_TKWRD_ECHO, PH7_TKWRD_USE, PH7_TKWRD_ECHO, PH7_TKWRD_ABSTRACT, PH7_TKWRD_CLASS,
PH7_TKWRD_AS, PH7_TKWRD_CONTINUE, PH7_TKWRD_ENDIF, PH7_TKWRD_FUNCTION, PH7_TKWRD_DIE,
PH7_TKWRD_ENDWHILE, PH7_TKWRD_WHILE, PH7_TKWRD_EVAL, PH7_TKWRD_DO, PH7_TKWRD_EXIT,
PH7_TKWRD_GOTO, PH7_TKWRD_IMPLEMENTS, PH7_TKWRD_INCONCE, PH7_TKWRD_INCLUDE, PH7_TKWRD_EMPTY,
PH7_TKWRD_INSTANCEOF,PH7_TKWRD_INTERFACE, PH7_TKWRD_INT, PH7_TKWRD_ENDFOR, PH7_TKWRD_END4EACH,
PH7_TKWRD_FOR, PH7_TKWRD_FOREACH, PH7_TKWRD_OR, PH7_TKWRD_ISSET, PH7_TKWRD_PARENT,
PH7_TKWRD_PRIVATE, PH7_TKWRD_PROTECTED, PH7_TKWRD_PUBLIC, PH7_TKWRD_CATCH, PH7_TKWRD_UNSET,
PH7_TKWRD_XOR, PH7_TKWRD_ARRAY, PH7_TKWRD_AS, PH7_TKWRD_ARRAY, PH7_TKWRD_EXIT,
PH7_TKWRD_UNSET, PH7_TKWRD_XOR, PH7_TKWRD_OR, PH7_TKWRD_BREAK
};
int h, i;
if( n<2 ) return PH7_TK_ID;
h = (((int)z[0]*4) ^ ((int)z[n-1]*3) ^ n) % 151;
for(i=((int)aHash[h])-1; i>=0; i=((int)aNext[i])-1){
if( (int)aLen[i]==n && SyMemcmp(&zText[aOffset[i]],z,n)==0 ){
/* PH7_TKWRD_EXTENDS */
/* PH7_TKWRD_ENDSWITCH */
/* PH7_TKWRD_SWITCH */
/* PH7_TKWRD_PRINT */
/* PH7_TKWRD_INT */
/* PH7_TKWRD_REQONCE */
/* PH7_TKWRD_REQUIRE */
/* PH7_TKWRD_SEQ */
/* PH7_TKWRD_ENDDEC */
/* PH7_TKWRD_DECLARE */
/* PH7_TKWRD_RETURN */
/* PH7_TKWRD_NAMESPACE */
/* PH7_TKWRD_ECHO */
/* PH7_TKWRD_OBJECT */
/* PH7_TKWRD_THROW */
/* PH7_TKWRD_BOOL */
/* PH7_TKWRD_BOOL */
/* PH7_TKWRD_AND */
/* PH7_TKWRD_DEFAULT */
/* PH7_TKWRD_TRY */
/* PH7_TKWRD_CASE */
/* PH7_TKWRD_SELF */
/* PH7_TKWRD_FINAL */
/* PH7_TKWRD_LIST */
/* PH7_TKWRD_STATIC */
/* PH7_TKWRD_CLONE */
/* PH7_TKWRD_SNE */
/* PH7_TKWRD_NEW */
/* PH7_TKWRD_CONST */
/* PH7_TKWRD_STRING */
/* PH7_TKWRD_GLOBAL */
/* PH7_TKWRD_USE */
/* PH7_TKWRD_ELIF */
/* PH7_TKWRD_ELSE */
/* PH7_TKWRD_IF */
/* PH7_TKWRD_FLOAT */
/* PH7_TKWRD_VAR */
/* PH7_TKWRD_ARRAY */
/* PH7_TKWRD_AND */
/* PH7_TKWRD_DIE */
/* PH7_TKWRD_ECHO */
/* PH7_TKWRD_USE */
/* PH7_TKWRD_ECHO */
/* PH7_TKWRD_ABSTRACT */
/* PH7_TKWRD_CLASS */
/* PH7_TKWRD_AS */
/* PH7_TKWRD_CONTINUE */
/* PH7_TKWRD_ENDIF */
/* PH7_TKWRD_FUNCTION */
/* PH7_TKWRD_DIE */
/* PH7_TKWRD_ENDWHILE */
/* PH7_TKWRD_WHILE */
/* PH7_TKWRD_EVAL */
/* PH7_TKWRD_DO */
/* PH7_TKWRD_EXIT */
/* PH7_TKWRD_GOTO */
/* PH7_TKWRD_IMPLEMENTS */
/* PH7_TKWRD_INCONCE */
/* PH7_TKWRD_INCLUDE */
/* PH7_TKWRD_EMPTY */
/* PH7_TKWRD_INSTANCEOF */
/* PH7_TKWRD_INTERFACE */
/* PH7_TKWRD_INT */
/* PH7_TKWRD_ENDFOR */
/* PH7_TKWRD_END4EACH */
/* PH7_TKWRD_FOR */
/* PH7_TKWRD_FOREACH */
/* PH7_TKWRD_OR */
/* PH7_TKWRD_ISSET */
/* PH7_TKWRD_PARENT */
/* PH7_TKWRD_PRIVATE */
/* PH7_TKWRD_PROTECTED */
/* PH7_TKWRD_PUBLIC */
/* PH7_TKWRD_CATCH */
/* PH7_TKWRD_UNSET */
/* PH7_TKWRD_XOR */
/* PH7_TKWRD_ARRAY */
/* PH7_TKWRD_AS */
/* PH7_TKWRD_ARRAY */
/* PH7_TKWRD_EXIT */
/* PH7_TKWRD_UNSET */
/* PH7_TKWRD_XOR */
/* PH7_TKWRD_OR */
/* PH7_TKWRD_BREAK */
return aCode[i];
}
}
return PH7_TK_ID;
}
/* --- End of Automatically generated code --- */
/*
* Extract a heredoc/nowdoc text from a raw PHP input.
* According to the PHP language reference manual:
* A third way to delimit strings is the heredoc syntax: <<<. After this operator, an identifier
* is provided, then a newline. The string itself follows, and then the same identifier again
* to close the quotation.
* The closing identifier must begin in the first column of the line. Also, the identifier must
* follow the same naming rules as any other label in PHP: it must contain only alphanumeric
* characters and underscores, and must start with a non-digit character or underscore.
* Heredoc text behaves just like a double-quoted string, without the double quotes.
* This means that quotes in a heredoc do not need to be escaped, but the escape codes listed
* above can still be used. Variables are expanded, but the same care must be taken when expressing
* complex variables inside a heredoc as with strings.
* Nowdocs are to single-quoted strings what heredocs are to double-quoted strings.
* A nowdoc is specified similarly to a heredoc, but no parsing is done inside a nowdoc.
* The construct is ideal for embedding PHP code or other large blocks of text without the need
* for escaping. It shares some features in common with the SGML <![CDATA[ ]]> construct, in that
* it declares a block of text which is not for parsing.
* A nowdoc is identified with the same <<< sequence used for heredocs, but the identifier which follows
* is enclosed in single quotes, e.g. <<<'EOT'. All the rules for heredoc identifiers also apply to nowdoc
* identifiers, especially those regarding the appearance of the closing identifier.
* Symisc Extension:
* The closing delimiter can now start with a digit or undersocre or it can be an UTF-8 stream.
* Example:
* <<<123
* HEREDOC Here
* 123
* or
* <<<___
* HEREDOC Here
* ___
*/
static sxi32 LexExtractHeredoc(SyStream *pStream,SyToken *pToken)
{
const unsigned char *zIn = pStream->zText;
const unsigned char *zEnd = pStream->zEnd;
const unsigned char *zPtr;
sxu8 bNowDoc = FALSE;
SyString sDelim;
SyString sStr;
/* Jump leading white spaces */
while( zIn < zEnd && zIn[0] < 0xc0 && SyisSpace(zIn[0]) && zIn[0] != '\n' ){
zIn++;
}
if( zIn >= zEnd ){
/* A simple symbol,return immediately */
return SXERR_CONTINUE;
}
if( zIn[0] == '\'' || zIn[0] == '"' ){
/* Make sure we are dealing with a nowdoc */
bNowDoc = zIn[0] == '\'' ? TRUE : FALSE;
zIn++;
}
if( zIn[0] < 0xc0 && !SyisAlphaNum(zIn[0]) && zIn[0] != '_' ){
/* Invalid delimiter,return immediately */
return SXERR_CONTINUE;
}
/* Isolate the identifier */
sDelim.zString = (const char *)zIn;
for(;;){
zPtr = zIn;
/* Skip alphanumeric stream */
while( zPtr < zEnd && zPtr[0] < 0xc0 && (SyisAlphaNum(zPtr[0]) || zPtr[0] == '_') ){
zPtr++;
}
if( zPtr < zEnd && zPtr[0] >= 0xc0 ){
zPtr++;
/* UTF-8 stream */
while( zPtr < zEnd && ((zPtr[0] & 0xc0) == 0x80) ){
zPtr++;
}
}
if( zPtr == zIn ){
/* Not an UTF-8 or alphanumeric stream */
break;
}
/* Synchronize pointers */
zIn = zPtr;
}
/* Get the identifier length */
sDelim.nByte = (sxu32)((const char *)zIn-sDelim.zString);
if( zIn[0] == '"' || (bNowDoc && zIn[0] == '\'') ){
/* Jump the trailing single quote */
zIn++;
}
/* Jump trailing white spaces */
while( zIn < zEnd && zIn[0] < 0xc0 && SyisSpace(zIn[0]) && zIn[0] != '\n' ){
zIn++;
}
if( sDelim.nByte <= 0 || zIn >= zEnd || zIn[0] != '\n' ){
/* Invalid syntax */
return SXERR_CONTINUE;
}
pStream->nLine++; /* Increment line counter */
zIn++;
/* Isolate the delimited string */
sStr.zString = (const char *)zIn;
/* Go and found the closing delimiter */
for(;;){
/* Synchronize with the next line */
while( zIn < zEnd && zIn[0] != '\n' ){
zIn++;
}
if( zIn >= zEnd ){
/* End of the input reached, break immediately */
pStream->zText = pStream->zEnd;
break;
}
pStream->nLine++; /* Increment line counter */
zIn++;
if( (sxu32)(zEnd - zIn) >= sDelim.nByte && SyMemcmp((const void *)sDelim.zString,(const void *)zIn,sDelim.nByte) == 0 ){
zPtr = &zIn[sDelim.nByte];
while( zPtr < zEnd && zPtr[0] < 0xc0 && SyisSpace(zPtr[0]) && zPtr[0] != '\n' ){
zPtr++;
}
if( zPtr >= zEnd ){
/* End of input */
pStream->zText = zPtr;
break;
}
if( zPtr[0] == ';' ){
const unsigned char *zCur = zPtr;
zPtr++;
while( zPtr < zEnd && zPtr[0] < 0xc0 && SyisSpace(zPtr[0]) && zPtr[0] != '\n' ){
zPtr++;
}
if( zPtr >= zEnd || zPtr[0] == '\n' ){
/* Closing delimiter found,break immediately */
pStream->zText = zCur; /* Keep the semi-colon */
break;
}
}else if( zPtr[0] == '\n' ){
/* Closing delimiter found,break immediately */
pStream->zText = zPtr; /* Synchronize with the stream cursor */
break;
}
/* Synchronize pointers and continue searching */
zIn = zPtr;
}
} /* For(;;) */
/* Get the delimited string length */
sStr.nByte = (sxu32)((const char *)zIn-sStr.zString);
/* Record token type and length */
pToken->nType = bNowDoc ? PH7_TK_NOWDOC : PH7_TK_HEREDOC;
SyStringDupPtr(&pToken->sData,&sStr);
/* Remove trailing white spaces */
SyStringRightTrim(&pToken->sData);
/* All done */
return SXRET_OK;
}
/*
* Tokenize a raw PHP input.
* This is the public tokenizer called by most code generator routines.
*/
PH7_PRIVATE sxi32 PH7_TokenizePHP(const char *zInput,sxu32 nLen,sxu32 nLineStart,SySet *pOut)
{
SyLex sLexer;
sxi32 rc;
/* Initialize the lexer */
rc = SyLexInit(&sLexer,&(*pOut),TokenizePHP,0);
if( rc != SXRET_OK ){
return rc;
}
sLexer.sStream.nLine = nLineStart;
/* Tokenize input */
rc = SyLexTokenizeInput(&sLexer,zInput,nLen,0,0,0);
/* Release the lexer */
SyLexRelease(&sLexer);
/* Tokenization result */
return rc;
}
/*
* High level public tokenizer.
* Tokenize the input into PHP tokens and raw tokens [i.e: HTML,XML,Raw text...].
* According to the PHP language reference manual
* When PHP parses a file, it looks for opening and closing tags, which tell PHP
* to start and stop interpreting the code between them. Parsing in this manner allows
* PHP to be embedded in all sorts of different documents, as everything outside of a pair
* of opening and closing tags is ignored by the PHP parser. Most of the time you will see
* PHP embedded in HTML documents, as in this example.
* <?php echo 'While this is going to be parsed.'; ?>
* <p>This will also be ignored.</p>
* You can also use more advanced structures:
* Example #1 Advanced escaping
* <?php
* if ($expression) {
* ?>
* <strong>This is true.</strong>
* <?php
* } else {
* ?>
* <strong>This is false.</strong>
* <?php
* }
* ?>
* This works as expected, because when PHP hits the ?> closing tags, it simply starts outputting
* whatever it finds (except for an immediately following newline - see instruction separation ) until it hits
* another opening tag. The example given here is contrived, of course, but for outputting large blocks of text
* dropping out of PHP parsing mode is generally more efficient than sending all of the text through echo() or print().
* There are four different pairs of opening and closing tags which can be used in PHP. Three of those, <?php ?>
* <script language="php"> </script> and <? ?> are always available. The other two are short tags and ASP style
* tags, and can be turned on and off from the php.ini configuration file. As such, while some people find short tags
* and ASP style tags convenient, they are less portable, and generally not recommended.
* Note:
* Also note that if you are embedding PHP within XML or XHTML you will need to use the <?php ?> tags to remain
* compliant with standards.
* Example #2 PHP Opening and Closing Tags
* 1. <?php echo 'if you want to serve XHTML or XML documents, do it like this'; ?>
* 2. <script language="php">
* echo 'some editors (like FrontPage) don\'t
* like processing instructions';
* </script>
*
* 3. <? echo 'this is the simplest, an SGML processing instruction'; ?>
* <?= expression ?> This is a shortcut for "<? echo expression ?>"
*/
PH7_PRIVATE sxi32 PH7_TokenizeRawText(const char *zInput,sxu32 nLen,SySet *pOut)
{
const char *zEnd = &zInput[nLen];
const char *zIn = zInput;
const char *zCur,*zCurEnd;
SyString sCtag = { 0, 0 }; /* Closing tag */
SyToken sToken;
SyString sDoc;
sxu32 nLine;
sxi32 iNest;
sxi32 rc;
/* Tokenize the input into PHP tokens and raw tokens */
nLine = 1;
zCur = zCurEnd = 0; /* Prevent compiler warning */
sToken.pUserData = 0;
iNest = 0;
sDoc.nByte = 0;
sDoc.zString = ""; /* cc warning */
for(;;){
if( zIn >= zEnd ){
/* End of input reached */
break;
}
sToken.nLine = nLine;
zCur = zIn;
zCurEnd = 0;
while( zIn < zEnd ){
if( zIn[0] == '<' ){
const char *zTmp = zIn; /* End of raw input marker */
zIn++;
if( zIn < zEnd ){
if( zIn[0] == '?' ){
zIn++;
if( (sxu32)(zEnd - zIn) >= sizeof("php")-1 && SyStrnicmp(zIn,"php",sizeof("php")-1) == 0 ){
/* opening tag: <?php */
zIn += sizeof("php")-1;
}
/* Look for the closing tag '?>' */
SyStringInitFromBuf(&sCtag,"?>",sizeof("?>")-1);
zCurEnd = zTmp;
break;
}
}
}else{
if( zIn[0] == '\n' ){
nLine++;
}
zIn++;
}
} /* While(zIn < zEnd) */
if( zCurEnd == 0 ){
zCurEnd = zIn;
}
/* Save the raw token */
SyStringInitFromBuf(&sToken.sData,zCur,zCurEnd - zCur);
sToken.nType = PH7_TOKEN_RAW;
rc = SySetPut(&(*pOut),(const void *)&sToken);
if( rc != SXRET_OK ){
return rc;
}
if( zIn >= zEnd ){
break;
}
/* Ignore leading white space */
while( zIn < zEnd && (unsigned char)zIn[0] < 0xc0 && SyisSpace(zIn[0]) ){
if( zIn[0] == '\n' ){
nLine++;
}
zIn++;
}
/* Delimit the PHP chunk */
sToken.nLine = nLine;
zCur = zIn;
while( (sxu32)(zEnd - zIn) >= sCtag.nByte ){
const char *zPtr;
if( SyMemcmp(zIn,sCtag.zString,sCtag.nByte) == 0 && iNest < 1 ){
break;
}
for(;;){
if( zIn[0] != '/' || (zIn[1] != '*' && zIn[1] != '/') /* && sCtag.nByte >= 2 */ ){
break;
}
zIn += 2;
if( zIn[-1] == '/' ){
/* Inline comment */
while( zIn < zEnd && zIn[0] != '\n' ){
zIn++;
}
if( zIn >= zEnd ){
zIn--;
}
}else{
/* Block comment */
while( (sxu32)(zEnd-zIn) >= sizeof("*/") - 1 ){
if( zIn[0] == '*' && zIn[1] == '/' ){
zIn += 2;
break;
}
if( zIn[0] == '\n' ){
nLine++;
}
zIn++;
}
}
}
if( zIn[0] == '\n' ){
nLine++;
if( iNest > 0 ){
zIn++;
while( zIn < zEnd && (unsigned char)zIn[0] < 0xc0 && SyisSpace(zIn[0]) && zIn[0] != '\n' ){
zIn++;
}
zPtr = zIn;
while( zIn < zEnd ){
if( (unsigned char)zIn[0] >= 0xc0 ){
/* UTF-8 stream */
zIn++;
SX_JMP_UTF8(zIn,zEnd);
}else if( !SyisAlphaNum(zIn[0]) && zIn[0] != '_' ){
break;
}else{
zIn++;
}
}
if( (sxu32)(zIn - zPtr) == sDoc.nByte && SyMemcmp(sDoc.zString,zPtr,sDoc.nByte) == 0 ){
iNest = 0;
}
continue;
}
}else if ( (sxu32)(zEnd - zIn) >= sizeof("<<<") && zIn[0] == '<' && zIn[1] == '<' && zIn[2] == '<' && iNest < 1){
zIn += sizeof("<<<")-1;
while( zIn < zEnd && (unsigned char)zIn[0] < 0xc0 && SyisSpace(zIn[0]) && zIn[0] != '\n' ){
zIn++;
}
if( zIn[0] == '"' || zIn[0] == '\'' ){
zIn++;
}
zPtr = zIn;
while( zIn < zEnd ){
if( (unsigned char)zIn[0] >= 0xc0 ){
/* UTF-8 stream */
zIn++;
SX_JMP_UTF8(zIn,zEnd);
}else if( !SyisAlphaNum(zIn[0]) && zIn[0] != '_' ){
break;
}else{
zIn++;
}
}
SyStringInitFromBuf(&sDoc,zPtr,zIn-zPtr);
SyStringFullTrim(&sDoc);
if( sDoc.nByte > 0 ){
iNest++;
}
continue;
}
zIn++;
if ( zIn >= zEnd )
break;
}
if( (sxu32)(zEnd - zIn) < sCtag.nByte ){
zIn = zEnd;
}
if( zCur < zIn ){
/* Save the PHP chunk for later processing */
sToken.nType = PH7_TOKEN_PHP;
SyStringInitFromBuf(&sToken.sData,zCur,zIn-zCur);
SyStringRightTrim(&sToken.sData); /* Trim trailing white spaces */
rc = SySetPut(&(*pOut),(const void *)&sToken);
if( rc != SXRET_OK ){
return rc;
}
}
if( zIn < zEnd ){
/* Jump the trailing closing tag */
zIn += sCtag.nByte;
}
} /* For(;;) */
return SXRET_OK;
}