mirror of
https://github.com/reactos/wine.git
synced 2024-12-05 02:07:16 +00:00
798 lines
20 KiB
C
798 lines
20 KiB
C
/*
|
|
* Copyright 2008 Jacek Caban for CodeWeavers
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include <math.h>
|
|
#include <limits.h>
|
|
|
|
#include "jscript.h"
|
|
#include "activscp.h"
|
|
#include "objsafe.h"
|
|
#include "engine.h"
|
|
|
|
#include "parser.tab.h"
|
|
|
|
#include "wine/debug.h"
|
|
#include "wine/unicode.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(jscript);
|
|
|
|
#define LONGLONG_MAX (((LONGLONG)0x7fffffff<<32)|0xffffffff)
|
|
|
|
static const WCHAR breakW[] = {'b','r','e','a','k',0};
|
|
static const WCHAR caseW[] = {'c','a','s','e',0};
|
|
static const WCHAR catchW[] = {'c','a','t','c','h',0};
|
|
static const WCHAR continueW[] = {'c','o','n','t','i','n','u','e',0};
|
|
static const WCHAR defaultW[] = {'d','e','f','a','u','l','t',0};
|
|
static const WCHAR deleteW[] = {'d','e','l','e','t','e',0};
|
|
static const WCHAR doW[] = {'d','o',0};
|
|
static const WCHAR elseW[] = {'e','l','s','e',0};
|
|
static const WCHAR falseW[] = {'f','a','l','s','e',0};
|
|
static const WCHAR finallyW[] = {'f','i','n','a','l','l','y',0};
|
|
static const WCHAR forW[] = {'f','o','r',0};
|
|
static const WCHAR functionW[] = {'f','u','n','c','t','i','o','n',0};
|
|
static const WCHAR ifW[] = {'i','f',0};
|
|
static const WCHAR inW[] = {'i','n',0};
|
|
static const WCHAR instanceofW[] = {'i','n','s','t','a','n','c','e','o','f',0};
|
|
static const WCHAR newW[] = {'n','e','w',0};
|
|
static const WCHAR nullW[] = {'n','u','l','l',0};
|
|
static const WCHAR returnW[] = {'r','e','t','u','r','n',0};
|
|
static const WCHAR switchW[] = {'s','w','i','t','c','h',0};
|
|
static const WCHAR thisW[] = {'t','h','i','s',0};
|
|
static const WCHAR throwW[] = {'t','h','r','o','w',0};
|
|
static const WCHAR trueW[] = {'t','r','u','e',0};
|
|
static const WCHAR tryW[] = {'t','r','y',0};
|
|
static const WCHAR typeofW[] = {'t','y','p','e','o','f',0};
|
|
static const WCHAR undefinedW[] = {'u','n','d','e','f','i','n','e','d',0};
|
|
static const WCHAR varW[] = {'v','a','r',0};
|
|
static const WCHAR voidW[] = {'v','o','i','d',0};
|
|
static const WCHAR whileW[] = {'w','h','i','l','e',0};
|
|
static const WCHAR withW[] = {'w','i','t','h',0};
|
|
|
|
static const struct {
|
|
const WCHAR *word;
|
|
int token;
|
|
} keywords[] = {
|
|
{breakW, kBREAK},
|
|
{caseW, kCASE},
|
|
{catchW, kCATCH},
|
|
{continueW, kCONTINUE},
|
|
{defaultW, kDEFAULT},
|
|
{deleteW, kDELETE},
|
|
{doW, kDO},
|
|
{elseW, kELSE},
|
|
{falseW, kFALSE},
|
|
{finallyW, kFINALLY},
|
|
{forW, kFOR},
|
|
{functionW, kFUNCTION},
|
|
{ifW, kIF},
|
|
{inW, kIN},
|
|
{instanceofW, kINSTANCEOF},
|
|
{newW, kNEW},
|
|
{nullW, kNULL},
|
|
{returnW, kRETURN},
|
|
{switchW, kSWITCH},
|
|
{thisW, kTHIS},
|
|
{throwW, kTHROW},
|
|
{trueW, kTRUE},
|
|
{tryW, kTRY},
|
|
{typeofW, kTYPEOF},
|
|
{undefinedW, kUNDEFINED},
|
|
{varW, kVAR},
|
|
{voidW, kVOID},
|
|
{whileW, kWHILE},
|
|
{withW, kWITH}
|
|
};
|
|
|
|
static int lex_error(parser_ctx_t *ctx, HRESULT hres)
|
|
{
|
|
ctx->hres = JSCRIPT_ERROR|hres;
|
|
ctx->lexer_error = TRUE;
|
|
return -1;
|
|
}
|
|
|
|
/* ECMA-262 3rd Edition 7.6 */
|
|
static BOOL is_identifier_char(WCHAR c)
|
|
{
|
|
return isalnumW(c) || c == '$' || c == '_' || c == '\\';
|
|
}
|
|
|
|
static int check_keyword(parser_ctx_t *ctx, const WCHAR *word, const WCHAR **lval)
|
|
{
|
|
const WCHAR *p1 = ctx->ptr;
|
|
const WCHAR *p2 = word;
|
|
|
|
while(p1 < ctx->end && *p2) {
|
|
if(*p1 != *p2)
|
|
return *p1 - *p2;
|
|
p1++;
|
|
p2++;
|
|
}
|
|
|
|
if(*p2 || (p1 < ctx->end && is_identifier_char(*p1)))
|
|
return 1;
|
|
|
|
*lval = ctx->ptr;
|
|
ctx->ptr = p1;
|
|
return 0;
|
|
}
|
|
|
|
/* ECMA-262 3rd Edition 7.3 */
|
|
static BOOL is_endline(WCHAR c)
|
|
{
|
|
return c == '\n' || c == '\r' || c == 0x2028 || c == 0x2029;
|
|
}
|
|
|
|
static int hex_to_int(WCHAR c)
|
|
{
|
|
if('0' <= c && c <= '9')
|
|
return c-'0';
|
|
|
|
if('a' <= c && c <= 'f')
|
|
return c-'a'+10;
|
|
|
|
if('A' <= c && c <= 'F')
|
|
return c-'A'+10;
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int check_keywords(parser_ctx_t *ctx, const WCHAR **lval)
|
|
{
|
|
int min = 0, max = sizeof(keywords)/sizeof(keywords[0])-1, r, i;
|
|
|
|
while(min <= max) {
|
|
i = (min+max)/2;
|
|
|
|
r = check_keyword(ctx, keywords[i].word, lval);
|
|
if(!r)
|
|
return keywords[i].token;
|
|
|
|
if(r > 0)
|
|
min = i+1;
|
|
else
|
|
max = i-1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void skip_spaces(parser_ctx_t *ctx)
|
|
{
|
|
while(ctx->ptr < ctx->end && isspaceW(*ctx->ptr)) {
|
|
if(is_endline(*ctx->ptr++))
|
|
ctx->nl = TRUE;
|
|
}
|
|
}
|
|
|
|
static BOOL skip_html_comment(parser_ctx_t *ctx)
|
|
{
|
|
const WCHAR html_commentW[] = {'<','!','-','-',0};
|
|
|
|
if(!ctx->is_html || ctx->ptr+3 >= ctx->end ||
|
|
memcmp(ctx->ptr, html_commentW, sizeof(WCHAR)*4))
|
|
return FALSE;
|
|
|
|
ctx->nl = TRUE;
|
|
while(ctx->ptr < ctx->end && !is_endline(*ctx->ptr++));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL skip_comment(parser_ctx_t *ctx)
|
|
{
|
|
if(ctx->ptr+1 >= ctx->end || *ctx->ptr != '/')
|
|
return FALSE;
|
|
|
|
switch(ctx->ptr[1]) {
|
|
case '*':
|
|
ctx->ptr += 2;
|
|
while(ctx->ptr+1 < ctx->end && (ctx->ptr[0] != '*' || ctx->ptr[1] != '/'))
|
|
ctx->ptr++;
|
|
|
|
if(ctx->ptr[0] == '*' && ctx->ptr[1] == '/') {
|
|
ctx->ptr += 2;
|
|
}else {
|
|
WARN("unexpected end of file (missing end of comment)\n");
|
|
ctx->ptr = ctx->end;
|
|
}
|
|
break;
|
|
case '/':
|
|
ctx->ptr += 2;
|
|
while(ctx->ptr < ctx->end && !is_endline(*ctx->ptr))
|
|
ctx->ptr++;
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL unescape(WCHAR *str)
|
|
{
|
|
WCHAR *pd, *p, c;
|
|
int i;
|
|
|
|
pd = p = str;
|
|
while(*p) {
|
|
if(*p != '\\') {
|
|
*pd++ = *p++;
|
|
continue;
|
|
}
|
|
|
|
p++;
|
|
c = 0;
|
|
|
|
switch(*p) {
|
|
case '\'':
|
|
case '\"':
|
|
case '\\':
|
|
c = *p;
|
|
break;
|
|
case 'b':
|
|
c = '\b';
|
|
break;
|
|
case 't':
|
|
c = '\t';
|
|
break;
|
|
case 'n':
|
|
c = '\n';
|
|
break;
|
|
case 'v':
|
|
c = '\v';
|
|
break;
|
|
case 'f':
|
|
c = '\f';
|
|
break;
|
|
case 'r':
|
|
c = '\r';
|
|
break;
|
|
case 'x':
|
|
i = hex_to_int(*++p);
|
|
if(i == -1)
|
|
return FALSE;
|
|
c = i << 4;
|
|
|
|
i = hex_to_int(*++p);
|
|
if(i == -1)
|
|
return FALSE;
|
|
c += i;
|
|
break;
|
|
case 'u':
|
|
i = hex_to_int(*++p);
|
|
if(i == -1)
|
|
return FALSE;
|
|
c = i << 12;
|
|
|
|
i = hex_to_int(*++p);
|
|
if(i == -1)
|
|
return FALSE;
|
|
c += i << 8;
|
|
|
|
i = hex_to_int(*++p);
|
|
if(i == -1)
|
|
return FALSE;
|
|
c += i << 4;
|
|
|
|
i = hex_to_int(*++p);
|
|
if(i == -1)
|
|
return FALSE;
|
|
c += i;
|
|
break;
|
|
default:
|
|
if(isdigitW(*p)) {
|
|
c = *p++ - '0';
|
|
if(isdigitW(*p)) {
|
|
c = c*8 + (*p++ - '0');
|
|
if(isdigitW(*p))
|
|
c = c*8 + (*p++ - '0');
|
|
}
|
|
p--;
|
|
}
|
|
else
|
|
c = *p;
|
|
}
|
|
|
|
*pd++ = c;
|
|
p++;
|
|
}
|
|
|
|
*pd = 0;
|
|
return TRUE;
|
|
}
|
|
|
|
static int parse_identifier(parser_ctx_t *ctx, const WCHAR **ret)
|
|
{
|
|
const WCHAR *ptr = ctx->ptr++;
|
|
WCHAR *wstr;
|
|
int len;
|
|
|
|
while(ctx->ptr < ctx->end && is_identifier_char(*ctx->ptr))
|
|
ctx->ptr++;
|
|
|
|
len = ctx->ptr-ptr;
|
|
|
|
*ret = wstr = parser_alloc(ctx, (len+1)*sizeof(WCHAR));
|
|
memcpy(wstr, ptr, (len+1)*sizeof(WCHAR));
|
|
wstr[len] = 0;
|
|
|
|
/* FIXME: unescape */
|
|
return tIdentifier;
|
|
}
|
|
|
|
static int parse_string_literal(parser_ctx_t *ctx, const WCHAR **ret, WCHAR endch)
|
|
{
|
|
const WCHAR *ptr = ++ctx->ptr;
|
|
WCHAR *wstr;
|
|
int len;
|
|
|
|
while(ctx->ptr < ctx->end && *ctx->ptr != endch) {
|
|
if(*ctx->ptr++ == '\\')
|
|
ctx->ptr++;
|
|
}
|
|
|
|
if(ctx->ptr == ctx->end)
|
|
return lex_error(ctx, IDS_UNTERMINATED_STR);
|
|
|
|
len = ctx->ptr-ptr;
|
|
|
|
*ret = wstr = parser_alloc(ctx, (len+1)*sizeof(WCHAR));
|
|
memcpy(wstr, ptr, (len+1)*sizeof(WCHAR));
|
|
wstr[len] = 0;
|
|
|
|
ctx->ptr++;
|
|
|
|
if(!unescape(wstr)) {
|
|
WARN("unescape failed\n");
|
|
return lex_error(ctx, E_FAIL);
|
|
}
|
|
|
|
return tStringLiteral;
|
|
}
|
|
|
|
static literal_t *alloc_int_literal(parser_ctx_t *ctx, LONG l)
|
|
{
|
|
literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
|
|
|
|
ret->type = LT_INT;
|
|
ret->u.lval = l;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int parse_double_literal(parser_ctx_t *ctx, LONG int_part, literal_t **literal)
|
|
{
|
|
LONGLONG d, hlp;
|
|
int exp = 0;
|
|
|
|
if(ctx->ptr == ctx->end || (!isdigitW(*ctx->ptr) &&
|
|
*ctx->ptr!='.' && *ctx->ptr!='e' && *ctx->ptr!='E')) {
|
|
ERR("Illegal character\n");
|
|
return 0;
|
|
}
|
|
|
|
d = int_part;
|
|
while(ctx->ptr < ctx->end && isdigitW(*ctx->ptr)) {
|
|
hlp = d*10 + *(ctx->ptr++) - '0';
|
|
if(d>LONGLONG_MAX/10 || hlp<0) {
|
|
exp++;
|
|
break;
|
|
}
|
|
else
|
|
d = hlp;
|
|
}
|
|
while(ctx->ptr < ctx->end && isdigitW(*ctx->ptr)) {
|
|
exp++;
|
|
ctx->ptr++;
|
|
}
|
|
|
|
if(*ctx->ptr == '.') ctx->ptr++;
|
|
|
|
while(ctx->ptr < ctx->end && isdigitW(*ctx->ptr)) {
|
|
hlp = d*10 + *(ctx->ptr++) - '0';
|
|
if(d>LONGLONG_MAX/10 || hlp<0)
|
|
break;
|
|
|
|
d = hlp;
|
|
exp--;
|
|
}
|
|
while(ctx->ptr < ctx->end && isdigitW(*ctx->ptr))
|
|
ctx->ptr++;
|
|
|
|
if(ctx->ptr < ctx->end && (*ctx->ptr == 'e' || *ctx->ptr == 'E')) {
|
|
int sign = 1, e = 0;
|
|
|
|
ctx->ptr++;
|
|
if(ctx->ptr < ctx->end) {
|
|
if(*ctx->ptr == '+') {
|
|
ctx->ptr++;
|
|
}else if(*ctx->ptr == '-') {
|
|
sign = -1;
|
|
ctx->ptr++;
|
|
}else if(!isdigitW(*ctx->ptr)) {
|
|
WARN("Expected exponent part\n");
|
|
return lex_error(ctx, E_FAIL);
|
|
}
|
|
}
|
|
|
|
if(ctx->ptr == ctx->end) {
|
|
WARN("unexpected end of file\n");
|
|
return lex_error(ctx, E_FAIL);
|
|
}
|
|
|
|
while(ctx->ptr < ctx->end && isdigitW(*ctx->ptr)) {
|
|
if(e > INT_MAX/10 || (e = e*10 + *ctx->ptr++ - '0')<0)
|
|
e = INT_MAX;
|
|
}
|
|
e *= sign;
|
|
|
|
if(exp<0 && e<0 && e+exp>0) exp = INT_MIN;
|
|
else if(exp>0 && e>0 && e+exp<0) exp = INT_MAX;
|
|
else exp += e;
|
|
}
|
|
|
|
*literal = parser_alloc(ctx, sizeof(literal_t));
|
|
(*literal)->type = LT_DOUBLE;
|
|
(*literal)->u.dval = (double)d*pow(10, exp);
|
|
|
|
return tNumericLiteral;
|
|
}
|
|
|
|
static int parse_numeric_literal(parser_ctx_t *ctx, literal_t **literal)
|
|
{
|
|
LONG l, d;
|
|
|
|
l = *ctx->ptr++ - '0';
|
|
if(ctx->ptr == ctx->end) {
|
|
*literal = alloc_int_literal(ctx, l);
|
|
return tNumericLiteral;
|
|
}
|
|
|
|
if(!l) {
|
|
if(*ctx->ptr == 'x' || *ctx->ptr == 'X') {
|
|
if(++ctx->ptr == ctx->end) {
|
|
ERR("unexpexted end of file\n");
|
|
return 0;
|
|
}
|
|
|
|
while(ctx->ptr < ctx->end && (d = hex_to_int(*ctx->ptr)) != -1) {
|
|
l = l*16 + d;
|
|
ctx->ptr++;
|
|
}
|
|
|
|
if(ctx->ptr < ctx->end && is_identifier_char(*ctx->ptr)) {
|
|
WARN("unexpected identifier char\n");
|
|
return lex_error(ctx, E_FAIL);
|
|
}
|
|
|
|
*literal = alloc_int_literal(ctx, l);
|
|
return tNumericLiteral;
|
|
}
|
|
|
|
if(isdigitW(*ctx->ptr) || is_identifier_char(*ctx->ptr)) {
|
|
WARN("wrong char after zero\n");
|
|
return lex_error(ctx, E_FAIL);
|
|
}
|
|
|
|
*literal = alloc_int_literal(ctx, 0);
|
|
}
|
|
|
|
while(ctx->ptr < ctx->end && isdigitW(*ctx->ptr))
|
|
{
|
|
d = l*10 + *(ctx->ptr)-'0';
|
|
|
|
/* Check for integer overflow */
|
|
if (l > INT_MAX/10 || d < 0)
|
|
return parse_double_literal(ctx, l, literal);
|
|
|
|
l = d;
|
|
ctx->ptr++;
|
|
}
|
|
|
|
if(ctx->ptr < ctx->end) {
|
|
if(*ctx->ptr == '.' || *ctx->ptr == 'e' || *ctx->ptr == 'E')
|
|
return parse_double_literal(ctx, l, literal);
|
|
|
|
if(is_identifier_char(*ctx->ptr)) {
|
|
WARN("unexpected identifier char\n");
|
|
return lex_error(ctx, E_FAIL);
|
|
}
|
|
}
|
|
|
|
*literal = alloc_int_literal(ctx, l);
|
|
return tNumericLiteral;
|
|
}
|
|
|
|
int parser_lex(void *lval, parser_ctx_t *ctx)
|
|
{
|
|
int ret;
|
|
|
|
ctx->nl = ctx->ptr == ctx->begin;
|
|
|
|
do {
|
|
skip_spaces(ctx);
|
|
if(ctx->ptr == ctx->end)
|
|
return 0;
|
|
}while(skip_comment(ctx) || skip_html_comment(ctx));
|
|
|
|
if(isalphaW(*ctx->ptr)) {
|
|
ret = check_keywords(ctx, lval);
|
|
if(ret)
|
|
return ret;
|
|
|
|
return parse_identifier(ctx, lval);
|
|
}
|
|
|
|
if(isdigitW(*ctx->ptr))
|
|
return parse_numeric_literal(ctx, lval);
|
|
|
|
switch(*ctx->ptr) {
|
|
case '{':
|
|
case '(':
|
|
case ')':
|
|
case '[':
|
|
case ']':
|
|
case ';':
|
|
case ',':
|
|
case '~':
|
|
case '?':
|
|
case ':':
|
|
return *ctx->ptr++;
|
|
|
|
case '}':
|
|
*(const WCHAR**)lval = ctx->ptr++;
|
|
return '}';
|
|
|
|
case '.':
|
|
if(++ctx->ptr < ctx->end && isdigitW(*ctx->ptr))
|
|
return parse_double_literal(ctx, 0, lval);
|
|
return '.';
|
|
|
|
case '<':
|
|
if(++ctx->ptr == ctx->end) {
|
|
*(int*)lval = EXPR_LESS;
|
|
return tRelOper;
|
|
}
|
|
|
|
switch(*ctx->ptr) {
|
|
case '=': /* <= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_LESSEQ;
|
|
return tRelOper;
|
|
case '<': /* << */
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* <<= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNLSHIFT;
|
|
return tAssignOper;
|
|
}
|
|
*(int*)lval = EXPR_LSHIFT;
|
|
return tShiftOper;
|
|
default: /* < */
|
|
*(int*)lval = EXPR_LESS;
|
|
return tRelOper;
|
|
}
|
|
|
|
case '>':
|
|
if(++ctx->ptr == ctx->end) { /* > */
|
|
*(int*)lval = EXPR_GREATER;
|
|
return tRelOper;
|
|
}
|
|
|
|
switch(*ctx->ptr) {
|
|
case '=': /* >= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_GREATEREQ;
|
|
return tRelOper;
|
|
case '>': /* >> */
|
|
if(++ctx->ptr < ctx->end) {
|
|
if(*ctx->ptr == '=') { /* >>= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNRSHIFT;
|
|
return tAssignOper;
|
|
}
|
|
if(*ctx->ptr == '>') { /* >>> */
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* >>>= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNRRSHIFT;
|
|
return tAssignOper;
|
|
}
|
|
*(int*)lval = EXPR_RRSHIFT;
|
|
return tRelOper;
|
|
}
|
|
}
|
|
*(int*)lval = EXPR_RSHIFT;
|
|
return tShiftOper;
|
|
default:
|
|
*(int*)lval = EXPR_GREATER;
|
|
return tRelOper;
|
|
}
|
|
|
|
case '+':
|
|
ctx->ptr++;
|
|
if(ctx->ptr < ctx->end) {
|
|
switch(*ctx->ptr) {
|
|
case '+': /* ++ */
|
|
ctx->ptr++;
|
|
return tINC;
|
|
case '=': /* += */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNADD;
|
|
return tAssignOper;
|
|
}
|
|
}
|
|
return '+';
|
|
|
|
case '-':
|
|
ctx->ptr++;
|
|
if(ctx->ptr < ctx->end) {
|
|
switch(*ctx->ptr) {
|
|
case '-': /* -- or --> */
|
|
ctx->ptr++;
|
|
if(ctx->is_html && ctx->nl && ctx->ptr < ctx->end && *ctx->ptr == '>') {
|
|
ctx->ptr++;
|
|
return tHTMLCOMMENT;
|
|
}
|
|
return tDEC;
|
|
case '=': /* -= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNSUB;
|
|
return tAssignOper;
|
|
}
|
|
}
|
|
return '-';
|
|
|
|
case '*':
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* *= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNMUL;
|
|
return tAssignOper;
|
|
}
|
|
return '*';
|
|
|
|
case '%':
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* %= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNMOD;
|
|
return tAssignOper;
|
|
}
|
|
return '%';
|
|
|
|
case '&':
|
|
if(++ctx->ptr < ctx->end) {
|
|
switch(*ctx->ptr) {
|
|
case '=': /* &= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNAND;
|
|
return tAssignOper;
|
|
case '&': /* && */
|
|
ctx->ptr++;
|
|
return tANDAND;
|
|
}
|
|
}
|
|
return '&';
|
|
|
|
case '|':
|
|
if(++ctx->ptr < ctx->end) {
|
|
switch(*ctx->ptr) {
|
|
case '=': /* |= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNOR;
|
|
return tAssignOper;
|
|
case '|': /* || */
|
|
ctx->ptr++;
|
|
return tOROR;
|
|
}
|
|
}
|
|
return '|';
|
|
|
|
case '^':
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* ^= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNXOR;
|
|
return tAssignOper;
|
|
}
|
|
return '^';
|
|
|
|
case '!':
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* != */
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* !== */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_NOTEQEQ;
|
|
return tEqOper;
|
|
}
|
|
*(int*)lval = EXPR_NOTEQ;
|
|
return tEqOper;
|
|
}
|
|
return '!';
|
|
|
|
case '=':
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* == */
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == '=') { /* === */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_EQEQ;
|
|
return tEqOper;
|
|
}
|
|
*(int*)lval = EXPR_EQ;
|
|
return tEqOper;
|
|
}
|
|
return '=';
|
|
|
|
case '/':
|
|
if(++ctx->ptr < ctx->end) {
|
|
if(*ctx->ptr == '=') { /* /= */
|
|
ctx->ptr++;
|
|
*(int*)lval = EXPR_ASSIGNDIV;
|
|
return kDIVEQ;
|
|
}
|
|
}
|
|
return '/';
|
|
|
|
case '\"':
|
|
case '\'':
|
|
return parse_string_literal(ctx, lval, *ctx->ptr);
|
|
|
|
case '_':
|
|
case '$':
|
|
return parse_identifier(ctx, lval);
|
|
}
|
|
|
|
WARN("unexpected char '%c' %d\n", *ctx->ptr, *ctx->ptr);
|
|
return 0;
|
|
}
|
|
|
|
literal_t *parse_regexp(parser_ctx_t *ctx)
|
|
{
|
|
const WCHAR *re, *flags_ptr;
|
|
DWORD re_len, flags;
|
|
literal_t *ret;
|
|
HRESULT hres;
|
|
|
|
TRACE("\n");
|
|
|
|
while(*ctx->ptr != '/')
|
|
ctx->ptr--;
|
|
|
|
re = ++ctx->ptr;
|
|
while(ctx->ptr < ctx->end && *ctx->ptr != '/') {
|
|
if(*ctx->ptr++ == '\\' && ctx->ptr < ctx->end)
|
|
ctx->ptr++;
|
|
}
|
|
|
|
if(ctx->ptr == ctx->end) {
|
|
WARN("unexpected end of file\n");
|
|
return NULL;
|
|
}
|
|
|
|
re_len = ctx->ptr-re;
|
|
|
|
flags_ptr = ++ctx->ptr;
|
|
while(ctx->ptr < ctx->end && isalnumW(*ctx->ptr))
|
|
ctx->ptr++;
|
|
|
|
hres = parse_regexp_flags(flags_ptr, ctx->ptr-flags_ptr, &flags);
|
|
if(FAILED(hres))
|
|
return NULL;
|
|
|
|
ret = parser_alloc(ctx, sizeof(literal_t));
|
|
ret->type = LT_REGEXP;
|
|
ret->u.regexp.str = re;
|
|
ret->u.regexp.str_len = re_len;
|
|
ret->u.regexp.flags = flags;
|
|
return ret;
|
|
}
|