1214 lines
30 KiB
C
1214 lines
30 KiB
C
/*
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* Copyright 2008 Jacek Caban for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <limits.h>
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#include <math.h>
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#include "jscript.h"
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#include "activscp.h"
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#include "objsafe.h"
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#include "engine.h"
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#include "parser.h"
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#include "parser.tab.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(jscript);
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static const WCHAR breakW[] = {'b','r','e','a','k',0};
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static const WCHAR caseW[] = {'c','a','s','e',0};
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static const WCHAR catchW[] = {'c','a','t','c','h',0};
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static const WCHAR continueW[] = {'c','o','n','t','i','n','u','e',0};
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static const WCHAR defaultW[] = {'d','e','f','a','u','l','t',0};
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static const WCHAR deleteW[] = {'d','e','l','e','t','e',0};
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static const WCHAR doW[] = {'d','o',0};
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static const WCHAR elseW[] = {'e','l','s','e',0};
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static const WCHAR falseW[] = {'f','a','l','s','e',0};
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static const WCHAR finallyW[] = {'f','i','n','a','l','l','y',0};
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static const WCHAR forW[] = {'f','o','r',0};
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static const WCHAR functionW[] = {'f','u','n','c','t','i','o','n',0};
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static const WCHAR getW[] = {'g','e','t',0};
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static const WCHAR ifW[] = {'i','f',0};
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static const WCHAR inW[] = {'i','n',0};
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static const WCHAR instanceofW[] = {'i','n','s','t','a','n','c','e','o','f',0};
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static const WCHAR newW[] = {'n','e','w',0};
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static const WCHAR nullW[] = {'n','u','l','l',0};
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static const WCHAR returnW[] = {'r','e','t','u','r','n',0};
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static const WCHAR setW[] = {'s','e','t',0};
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static const WCHAR switchW[] = {'s','w','i','t','c','h',0};
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static const WCHAR thisW[] = {'t','h','i','s',0};
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static const WCHAR throwW[] = {'t','h','r','o','w',0};
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static const WCHAR trueW[] = {'t','r','u','e',0};
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static const WCHAR tryW[] = {'t','r','y',0};
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static const WCHAR typeofW[] = {'t','y','p','e','o','f',0};
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static const WCHAR varW[] = {'v','a','r',0};
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static const WCHAR voidW[] = {'v','o','i','d',0};
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static const WCHAR whileW[] = {'w','h','i','l','e',0};
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static const WCHAR withW[] = {'w','i','t','h',0};
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static const WCHAR elifW[] = {'e','l','i','f',0};
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static const WCHAR endW[] = {'e','n','d',0};
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static const struct {
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const WCHAR *word;
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int token;
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BOOL no_nl;
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unsigned min_version;
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} keywords[] = {
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{breakW, kBREAK, TRUE},
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{caseW, kCASE},
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{catchW, kCATCH},
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{continueW, kCONTINUE, TRUE},
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{defaultW, kDEFAULT},
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{deleteW, kDELETE},
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{doW, kDO},
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{elseW, kELSE},
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{falseW, kFALSE},
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{finallyW, kFINALLY},
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{forW, kFOR},
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{functionW, kFUNCTION},
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{getW, kGET, FALSE, SCRIPTLANGUAGEVERSION_ES5},
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{ifW, kIF},
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{inW, kIN},
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{instanceofW, kINSTANCEOF},
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{newW, kNEW},
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{nullW, kNULL},
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{returnW, kRETURN, TRUE},
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{setW, kSET, FALSE, SCRIPTLANGUAGEVERSION_ES5},
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{switchW, kSWITCH},
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{thisW, kTHIS},
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{throwW, kTHROW},
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{trueW, kTRUE},
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{tryW, kTRY},
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{typeofW, kTYPEOF},
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{varW, kVAR},
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{voidW, kVOID},
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{whileW, kWHILE},
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{withW, kWITH}
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};
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static int lex_error(parser_ctx_t *ctx, HRESULT hres)
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{
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ctx->hres = hres;
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ctx->lexer_error = TRUE;
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return -1;
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}
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/* ECMA-262 3rd Edition 7.6 */
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BOOL is_identifier_char(WCHAR c)
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{
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return iswalnum(c) || c == '$' || c == '_' || c == '\\';
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}
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static BOOL is_identifier_first_char(WCHAR c)
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{
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return iswalpha(c) || c == '$' || c == '_' || c == '\\';
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}
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static int check_keyword(parser_ctx_t *ctx, const WCHAR *word, const WCHAR **lval)
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{
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const WCHAR *p1 = ctx->ptr;
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const WCHAR *p2 = word;
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while(p1 < ctx->end && *p2) {
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if(*p1 != *p2)
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return *p1 - *p2;
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p1++;
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p2++;
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}
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if(*p2 || (p1 < ctx->end && is_identifier_char(*p1)))
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return 1;
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if(lval)
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*lval = word;
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ctx->ptr = p1;
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return 0;
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}
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/* ECMA-262 3rd Edition 7.3 */
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static BOOL is_endline(WCHAR c)
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{
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return c == '\n' || c == '\r' || c == 0x2028 || c == 0x2029;
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}
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static int hex_to_int(WCHAR c)
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{
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if('0' <= c && c <= '9')
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return c-'0';
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if('a' <= c && c <= 'f')
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return c-'a'+10;
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if('A' <= c && c <= 'F')
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return c-'A'+10;
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return -1;
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}
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static int check_keywords(parser_ctx_t *ctx, const WCHAR **lval)
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{
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int min = 0, max = ARRAY_SIZE(keywords)-1, r, i;
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while(min <= max) {
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i = (min+max)/2;
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r = check_keyword(ctx, keywords[i].word, lval);
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if(!r) {
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if(ctx->script->version < keywords[i].min_version) {
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TRACE("ignoring keyword %s in incompatible mode\n",
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debugstr_w(keywords[i].word));
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ctx->ptr -= lstrlenW(keywords[i].word);
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return 0;
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}
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ctx->implicit_nl_semicolon = keywords[i].no_nl;
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return keywords[i].token;
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}
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if(r > 0)
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min = i+1;
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else
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max = i-1;
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}
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return 0;
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}
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static BOOL skip_html_comment(parser_ctx_t *ctx)
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{
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const WCHAR html_commentW[] = {'<','!','-','-',0};
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if(!ctx->is_html || ctx->ptr+3 >= ctx->end ||
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memcmp(ctx->ptr, html_commentW, sizeof(WCHAR)*4))
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return FALSE;
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ctx->nl = TRUE;
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while(ctx->ptr < ctx->end && !is_endline(*ctx->ptr++));
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return TRUE;
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}
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static BOOL skip_comment(parser_ctx_t *ctx)
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{
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if(ctx->ptr+1 >= ctx->end)
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return FALSE;
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if(*ctx->ptr != '/') {
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if(*ctx->ptr == '@' && ctx->ptr+2 < ctx->end && ctx->ptr[1] == '*' && ctx->ptr[2] == '/') {
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ctx->ptr += 3;
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return TRUE;
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}
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return FALSE;
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}
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switch(ctx->ptr[1]) {
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case '*':
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ctx->ptr += 2;
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if(ctx->ptr+2 < ctx->end && *ctx->ptr == '@' && is_identifier_char(ctx->ptr[1]))
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return FALSE;
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while(ctx->ptr+1 < ctx->end && (ctx->ptr[0] != '*' || ctx->ptr[1] != '/'))
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ctx->ptr++;
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if(ctx->ptr[0] == '*' && ctx->ptr[1] == '/') {
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ctx->ptr += 2;
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}else {
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WARN("unexpected end of file (missing end of comment)\n");
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ctx->ptr = ctx->end;
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}
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break;
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case '/':
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ctx->ptr += 2;
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if(ctx->ptr+2 < ctx->end && *ctx->ptr == '@' && is_identifier_char(ctx->ptr[1]))
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return FALSE;
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while(ctx->ptr < ctx->end && !is_endline(*ctx->ptr))
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ctx->ptr++;
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break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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static BOOL skip_spaces(parser_ctx_t *ctx)
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{
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while(ctx->ptr < ctx->end && (iswspace(*ctx->ptr) || *ctx->ptr == 0xFEFF /* UTF16 BOM */)) {
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if(is_endline(*ctx->ptr++))
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ctx->nl = TRUE;
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}
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return ctx->ptr != ctx->end;
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}
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BOOL unescape(WCHAR *str, size_t *len)
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{
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WCHAR *pd, *p, c, *end = str + *len;
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int i;
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pd = p = str;
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while(p < end) {
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if(*p != '\\') {
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*pd++ = *p++;
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continue;
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}
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if(++p == end)
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return FALSE;
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switch(*p) {
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case '\'':
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case '\"':
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case '\\':
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c = *p;
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break;
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case 'b':
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c = '\b';
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break;
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case 't':
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c = '\t';
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break;
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case 'n':
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c = '\n';
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break;
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case 'f':
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c = '\f';
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break;
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case 'r':
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c = '\r';
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break;
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case 'x':
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if(p + 2 >= end)
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return FALSE;
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i = hex_to_int(*++p);
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if(i == -1)
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return FALSE;
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c = i << 4;
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i = hex_to_int(*++p);
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if(i == -1)
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return FALSE;
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c += i;
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break;
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case 'u':
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if(p + 4 >= end)
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return FALSE;
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i = hex_to_int(*++p);
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if(i == -1)
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return FALSE;
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c = i << 12;
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i = hex_to_int(*++p);
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if(i == -1)
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return FALSE;
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c += i << 8;
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i = hex_to_int(*++p);
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if(i == -1)
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return FALSE;
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c += i << 4;
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i = hex_to_int(*++p);
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if(i == -1)
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return FALSE;
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c += i;
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break;
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default:
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if(iswdigit(*p)) {
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c = *p++ - '0';
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if(p < end && iswdigit(*p)) {
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c = c*8 + (*p++ - '0');
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if(p < end && iswdigit(*p))
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c = c*8 + (*p++ - '0');
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}
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p--;
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}
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else
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c = *p;
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}
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*pd++ = c;
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p++;
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}
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*len = pd - str;
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return TRUE;
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}
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static int parse_identifier(parser_ctx_t *ctx, const WCHAR **ret)
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{
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const WCHAR *ptr = ctx->ptr++;
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WCHAR *wstr;
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int len;
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while(ctx->ptr < ctx->end && is_identifier_char(*ctx->ptr))
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ctx->ptr++;
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len = ctx->ptr-ptr;
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*ret = wstr = parser_alloc(ctx, (len+1)*sizeof(WCHAR));
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memcpy(wstr, ptr, len*sizeof(WCHAR));
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wstr[len] = 0;
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/* FIXME: unescape */
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return tIdentifier;
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}
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static int parse_string_literal(parser_ctx_t *ctx, jsstr_t **ret, WCHAR endch)
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{
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const WCHAR *ptr = ++ctx->ptr, *ret_str = ptr;
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BOOL needs_unescape = FALSE;
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WCHAR *unescape_str;
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size_t len;
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while(ctx->ptr < ctx->end && *ctx->ptr != endch) {
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if(*ctx->ptr++ == '\\') {
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ctx->ptr++;
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needs_unescape = TRUE;
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}
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}
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if(ctx->ptr == ctx->end)
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return lex_error(ctx, JS_E_UNTERMINATED_STRING);
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len = ctx->ptr - ptr;
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ctx->ptr++;
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if(needs_unescape) {
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ret_str = unescape_str = parser_alloc(ctx, len * sizeof(WCHAR));
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if(!unescape_str)
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return lex_error(ctx, E_OUTOFMEMORY);
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memcpy(unescape_str, ptr, len * sizeof(WCHAR));
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if(!unescape(unescape_str, &len)) {
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WARN("unescape failed\n");
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return lex_error(ctx, E_FAIL);
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}
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}
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if(!(*ret = compiler_alloc_string_len(ctx->compiler, ret_str, len)))
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return lex_error(ctx, E_OUTOFMEMORY);
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/* FIXME: leaking string */
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return tStringLiteral;
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}
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static literal_t *new_double_literal(parser_ctx_t *ctx, DOUBLE d)
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{
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literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
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ret->type = LT_DOUBLE;
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ret->u.dval = d;
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return ret;
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}
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literal_t *new_boolean_literal(parser_ctx_t *ctx, BOOL bval)
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{
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literal_t *ret = parser_alloc(ctx, sizeof(literal_t));
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ret->type = LT_BOOL;
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ret->u.bval = bval;
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return ret;
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}
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HRESULT parse_decimal(const WCHAR **iter, const WCHAR *end, double *ret)
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{
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const WCHAR *ptr = *iter;
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LONGLONG d = 0, hlp;
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int exp = 0;
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while(ptr < end && iswdigit(*ptr)) {
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hlp = d*10 + *(ptr++) - '0';
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if(d>MAXLONGLONG/10 || hlp<0) {
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exp++;
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break;
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}
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else
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d = hlp;
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}
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while(ptr < end && iswdigit(*ptr)) {
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exp++;
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ptr++;
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}
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if(*ptr == '.') {
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ptr++;
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while(ptr < end && iswdigit(*ptr)) {
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hlp = d*10 + *(ptr++) - '0';
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if(d>MAXLONGLONG/10 || hlp<0)
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break;
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d = hlp;
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exp--;
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}
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while(ptr < end && iswdigit(*ptr))
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ptr++;
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}
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if(ptr < end && (*ptr == 'e' || *ptr == 'E')) {
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int sign = 1, e = 0;
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if(++ptr < end) {
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if(*ptr == '+') {
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ptr++;
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}else if(*ptr == '-') {
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sign = -1;
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ptr++;
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}else if(!iswdigit(*ptr)) {
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WARN("Expected exponent part\n");
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return E_FAIL;
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}
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}
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if(ptr == end) {
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WARN("unexpected end of file\n");
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return E_FAIL;
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}
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while(ptr < end && iswdigit(*ptr)) {
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if(e > INT_MAX/10 || (e = e*10 + *ptr++ - '0')<0)
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e = INT_MAX;
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}
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e *= sign;
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if(exp<0 && e<0 && e+exp>0) exp = INT_MIN;
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else if(exp>0 && e>0 && e+exp<0) exp = INT_MAX;
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else exp += e;
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}
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if(is_identifier_char(*ptr)) {
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WARN("wrong char after zero\n");
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return JS_E_MISSING_SEMICOLON;
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}
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*ret = exp>=0 ? d*pow(10, exp) : d/pow(10, -exp);
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*iter = ptr;
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return S_OK;
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}
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static BOOL parse_numeric_literal(parser_ctx_t *ctx, double *ret)
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{
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HRESULT hres;
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if(*ctx->ptr == '0') {
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ctx->ptr++;
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|
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if(*ctx->ptr == 'x' || *ctx->ptr == 'X') {
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double r = 0;
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int d;
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if(++ctx->ptr == ctx->end) {
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ERR("unexpected end of file\n");
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return FALSE;
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}
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|
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while(ctx->ptr < ctx->end && (d = hex_to_int(*ctx->ptr)) != -1) {
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r = r*16 + d;
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ctx->ptr++;
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}
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if(ctx->ptr < ctx->end && is_identifier_char(*ctx->ptr)) {
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WARN("unexpected identifier char\n");
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lex_error(ctx, JS_E_MISSING_SEMICOLON);
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return FALSE;
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}
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|
|
|
*ret = r;
|
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return TRUE;
|
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}
|
|
|
|
if(iswdigit(*ctx->ptr)) {
|
|
unsigned base = 8;
|
|
const WCHAR *ptr;
|
|
double val = 0;
|
|
|
|
for(ptr = ctx->ptr; ptr < ctx->end && iswdigit(*ptr); ptr++) {
|
|
if(*ptr > '7') {
|
|
base = 10;
|
|
break;
|
|
}
|
|
}
|
|
|
|
do {
|
|
val = val*base + *ctx->ptr-'0';
|
|
}while(++ctx->ptr < ctx->end && iswdigit(*ctx->ptr));
|
|
|
|
/* FIXME: Do we need it here? */
|
|
if(ctx->ptr < ctx->end && (is_identifier_char(*ctx->ptr) || *ctx->ptr == '.')) {
|
|
WARN("wrong char after octal literal: '%c'\n", *ctx->ptr);
|
|
lex_error(ctx, JS_E_MISSING_SEMICOLON);
|
|
return FALSE;
|
|
}
|
|
|
|
*ret = val;
|
|
return TRUE;
|
|
}
|
|
|
|
if(is_identifier_char(*ctx->ptr)) {
|
|
WARN("wrong char after zero\n");
|
|
lex_error(ctx, JS_E_MISSING_SEMICOLON);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
hres = parse_decimal(&ctx->ptr, ctx->end, ret);
|
|
if(FAILED(hres)) {
|
|
lex_error(ctx, hres);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static int next_token(parser_ctx_t *ctx, void *lval)
|
|
{
|
|
do {
|
|
if(!skip_spaces(ctx))
|
|
return tEOF;
|
|
}while(skip_comment(ctx) || skip_html_comment(ctx));
|
|
|
|
if(ctx->implicit_nl_semicolon) {
|
|
if(ctx->nl)
|
|
return ';';
|
|
ctx->implicit_nl_semicolon = FALSE;
|
|
}
|
|
|
|
if(iswalpha(*ctx->ptr)) {
|
|
int ret = check_keywords(ctx, lval);
|
|
if(ret)
|
|
return ret;
|
|
|
|
return parse_identifier(ctx, lval);
|
|
}
|
|
|
|
if(iswdigit(*ctx->ptr)) {
|
|
double n;
|
|
|
|
if(!parse_numeric_literal(ctx, &n))
|
|
return -1;
|
|
|
|
*(literal_t**)lval = new_double_literal(ctx, n);
|
|
return tNumericLiteral;
|
|
}
|
|
|
|
switch(*ctx->ptr) {
|
|
case '{':
|
|
case '(':
|
|
case ')':
|
|
case '[':
|
|
case ']':
|
|
case ';':
|
|
case ',':
|
|
case '~':
|
|
case '?':
|
|
return *ctx->ptr++;
|
|
|
|
case '}':
|
|
*(const WCHAR**)lval = ctx->ptr++;
|
|
return '}';
|
|
|
|
case '.':
|
|
if(ctx->ptr+1 < ctx->end && iswdigit(ctx->ptr[1])) {
|
|
double n;
|
|
HRESULT hres;
|
|
hres = parse_decimal(&ctx->ptr, ctx->end, &n);
|
|
if(FAILED(hres)) {
|
|
lex_error(ctx, hres);
|
|
return -1;
|
|
}
|
|
*(literal_t**)lval = new_double_literal(ctx, n);
|
|
return tNumericLiteral;
|
|
}
|
|
ctx->ptr++;
|
|
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 ':':
|
|
if(++ctx->ptr < ctx->end && *ctx->ptr == ':') {
|
|
ctx->ptr++;
|
|
return kDCOL;
|
|
}
|
|
return ':';
|
|
|
|
case '\"':
|
|
case '\'':
|
|
return parse_string_literal(ctx, lval, *ctx->ptr);
|
|
|
|
case '_':
|
|
case '$':
|
|
return parse_identifier(ctx, lval);
|
|
|
|
case '@':
|
|
return '@';
|
|
}
|
|
|
|
WARN("unexpected char '%c' %d\n", *ctx->ptr, *ctx->ptr);
|
|
return 0;
|
|
}
|
|
|
|
struct _cc_var_t {
|
|
ccval_t val;
|
|
struct _cc_var_t *next;
|
|
unsigned name_len;
|
|
WCHAR name[0];
|
|
};
|
|
|
|
void release_cc(cc_ctx_t *cc)
|
|
{
|
|
cc_var_t *iter, *next;
|
|
|
|
for(iter = cc->vars; iter; iter = next) {
|
|
next = iter->next;
|
|
heap_free(iter);
|
|
}
|
|
|
|
heap_free(cc);
|
|
}
|
|
|
|
static BOOL new_cc_var(cc_ctx_t *cc, const WCHAR *name, int len, ccval_t v)
|
|
{
|
|
cc_var_t *new_v;
|
|
|
|
if(len == -1)
|
|
len = lstrlenW(name);
|
|
|
|
new_v = heap_alloc(sizeof(cc_var_t) + (len+1)*sizeof(WCHAR));
|
|
if(!new_v)
|
|
return FALSE;
|
|
|
|
new_v->val = v;
|
|
memcpy(new_v->name, name, (len+1)*sizeof(WCHAR));
|
|
new_v->name_len = len;
|
|
new_v->next = cc->vars;
|
|
cc->vars = new_v;
|
|
return TRUE;
|
|
}
|
|
|
|
static cc_var_t *find_cc_var(cc_ctx_t *cc, const WCHAR *name, unsigned name_len)
|
|
{
|
|
cc_var_t *iter;
|
|
|
|
for(iter = cc->vars; iter; iter = iter->next) {
|
|
if(iter->name_len == name_len && !memcmp(iter->name, name, name_len*sizeof(WCHAR)))
|
|
return iter;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static BOOL init_cc(parser_ctx_t *ctx)
|
|
{
|
|
cc_ctx_t *cc;
|
|
|
|
static const WCHAR _win32W[] = {'_','w','i','n','3','2',0};
|
|
static const WCHAR _win64W[] = {'_','w','i','n','6','4',0};
|
|
static const WCHAR _x86W[] = {'_','x','8','6',0};
|
|
static const WCHAR _amd64W[] = {'_','a','m','d','6','4',0};
|
|
static const WCHAR _jscriptW[] = {'_','j','s','c','r','i','p','t',0};
|
|
static const WCHAR _jscript_buildW[] = {'_','j','s','c','r','i','p','t','_','b','u','i','l','d',0};
|
|
static const WCHAR _jscript_versionW[] = {'_','j','s','c','r','i','p','t','_','v','e','r','s','i','o','n',0};
|
|
|
|
if(ctx->script->cc)
|
|
return TRUE;
|
|
|
|
cc = heap_alloc(sizeof(cc_ctx_t));
|
|
if(!cc) {
|
|
lex_error(ctx, E_OUTOFMEMORY);
|
|
return FALSE;
|
|
}
|
|
|
|
cc->vars = NULL;
|
|
|
|
if(!new_cc_var(cc, _jscriptW, -1, ccval_bool(TRUE))
|
|
|| !new_cc_var(cc, sizeof(void*) == 8 ? _win64W : _win32W, -1, ccval_bool(TRUE))
|
|
|| !new_cc_var(cc, sizeof(void*) == 8 ? _amd64W : _x86W, -1, ccval_bool(TRUE))
|
|
|| !new_cc_var(cc, _jscript_versionW, -1, ccval_num(JSCRIPT_MAJOR_VERSION + (DOUBLE)JSCRIPT_MINOR_VERSION/10.0))
|
|
|| !new_cc_var(cc, _jscript_buildW, -1, ccval_num(JSCRIPT_BUILD_VERSION))) {
|
|
release_cc(cc);
|
|
lex_error(ctx, E_OUTOFMEMORY);
|
|
return FALSE;
|
|
}
|
|
|
|
ctx->script->cc = cc;
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL parse_cc_identifier(parser_ctx_t *ctx, const WCHAR **ret, unsigned *ret_len)
|
|
{
|
|
if(*ctx->ptr != '@') {
|
|
lex_error(ctx, JS_E_EXPECTED_AT);
|
|
return FALSE;
|
|
}
|
|
|
|
if(!is_identifier_first_char(*++ctx->ptr)) {
|
|
lex_error(ctx, JS_E_EXPECTED_IDENTIFIER);
|
|
return FALSE;
|
|
}
|
|
|
|
*ret = ctx->ptr;
|
|
while(++ctx->ptr < ctx->end && is_identifier_char(*ctx->ptr));
|
|
*ret_len = ctx->ptr - *ret;
|
|
return TRUE;
|
|
}
|
|
|
|
int try_parse_ccval(parser_ctx_t *ctx, ccval_t *r)
|
|
{
|
|
if(!skip_spaces(ctx))
|
|
return -1;
|
|
|
|
if(iswdigit(*ctx->ptr)) {
|
|
double n;
|
|
|
|
if(!parse_numeric_literal(ctx, &n))
|
|
return -1;
|
|
|
|
*r = ccval_num(n);
|
|
return 1;
|
|
}
|
|
|
|
if(*ctx->ptr == '@') {
|
|
const WCHAR *ident;
|
|
unsigned ident_len;
|
|
cc_var_t *cc_var;
|
|
|
|
if(!parse_cc_identifier(ctx, &ident, &ident_len))
|
|
return -1;
|
|
|
|
cc_var = find_cc_var(ctx->script->cc, ident, ident_len);
|
|
*r = cc_var ? cc_var->val : ccval_num(NAN);
|
|
return 1;
|
|
}
|
|
|
|
if(!check_keyword(ctx, trueW, NULL)) {
|
|
*r = ccval_bool(TRUE);
|
|
return 1;
|
|
}
|
|
|
|
if(!check_keyword(ctx, falseW, NULL)) {
|
|
*r = ccval_bool(FALSE);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int skip_code(parser_ctx_t *ctx, BOOL exec_else)
|
|
{
|
|
int if_depth = 1;
|
|
const WCHAR *ptr;
|
|
|
|
while(1) {
|
|
ptr = wcschr(ctx->ptr, '@');
|
|
if(!ptr) {
|
|
WARN("No @end\n");
|
|
return lex_error(ctx, JS_E_EXPECTED_CCEND);
|
|
}
|
|
ctx->ptr = ptr+1;
|
|
|
|
if(!check_keyword(ctx, endW, NULL)) {
|
|
if(--if_depth)
|
|
continue;
|
|
return 0;
|
|
}
|
|
|
|
if(exec_else && !check_keyword(ctx, elifW, NULL)) {
|
|
if(if_depth > 1)
|
|
continue;
|
|
|
|
if(!skip_spaces(ctx) || *ctx->ptr != '(')
|
|
return lex_error(ctx, JS_E_MISSING_LBRACKET);
|
|
|
|
if(!parse_cc_expr(ctx))
|
|
return -1;
|
|
|
|
if(!get_ccbool(ctx->ccval))
|
|
continue; /* skip block of code */
|
|
|
|
/* continue parsing */
|
|
ctx->cc_if_depth++;
|
|
return 0;
|
|
}
|
|
|
|
if(exec_else && !check_keyword(ctx, elseW, NULL)) {
|
|
if(if_depth > 1)
|
|
continue;
|
|
|
|
/* parse else block */
|
|
ctx->cc_if_depth++;
|
|
return 0;
|
|
}
|
|
|
|
if(!check_keyword(ctx, ifW, NULL)) {
|
|
if_depth++;
|
|
continue;
|
|
}
|
|
|
|
ctx->ptr++;
|
|
}
|
|
}
|
|
|
|
static int cc_token(parser_ctx_t *ctx, void *lval)
|
|
{
|
|
unsigned id_len = 0;
|
|
cc_var_t *var;
|
|
|
|
static const WCHAR cc_onW[] = {'c','c','_','o','n',0};
|
|
static const WCHAR setW[] = {'s','e','t',0};
|
|
|
|
ctx->ptr++;
|
|
|
|
if(!check_keyword(ctx, cc_onW, NULL))
|
|
return init_cc(ctx) ? 0 : -1;
|
|
|
|
if(!check_keyword(ctx, setW, NULL)) {
|
|
const WCHAR *ident;
|
|
unsigned ident_len;
|
|
cc_var_t *var;
|
|
|
|
if(!init_cc(ctx))
|
|
return -1;
|
|
|
|
if(!skip_spaces(ctx))
|
|
return lex_error(ctx, JS_E_EXPECTED_AT);
|
|
|
|
if(!parse_cc_identifier(ctx, &ident, &ident_len))
|
|
return -1;
|
|
|
|
if(!skip_spaces(ctx) || *ctx->ptr != '=')
|
|
return lex_error(ctx, JS_E_EXPECTED_ASSIGN);
|
|
ctx->ptr++;
|
|
|
|
if(!parse_cc_expr(ctx)) {
|
|
WARN("parsing CC expression failed\n");
|
|
return -1;
|
|
}
|
|
|
|
var = find_cc_var(ctx->script->cc, ident, ident_len);
|
|
if(var) {
|
|
var->val = ctx->ccval;
|
|
}else {
|
|
if(!new_cc_var(ctx->script->cc, ident, ident_len, ctx->ccval))
|
|
return lex_error(ctx, E_OUTOFMEMORY);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
if(!check_keyword(ctx, ifW, NULL)) {
|
|
if(!init_cc(ctx))
|
|
return -1;
|
|
|
|
if(!skip_spaces(ctx) || *ctx->ptr != '(')
|
|
return lex_error(ctx, JS_E_MISSING_LBRACKET);
|
|
|
|
if(!parse_cc_expr(ctx))
|
|
return -1;
|
|
|
|
if(get_ccbool(ctx->ccval)) {
|
|
/* continue parsing block inside if */
|
|
ctx->cc_if_depth++;
|
|
return 0;
|
|
}
|
|
|
|
return skip_code(ctx, TRUE);
|
|
}
|
|
|
|
if(!check_keyword(ctx, elifW, NULL) || !check_keyword(ctx, elseW, NULL)) {
|
|
if(!ctx->cc_if_depth)
|
|
return lex_error(ctx, JS_E_SYNTAX);
|
|
|
|
return skip_code(ctx, FALSE);
|
|
}
|
|
|
|
if(!check_keyword(ctx, endW, NULL)) {
|
|
if(!ctx->cc_if_depth)
|
|
return lex_error(ctx, JS_E_SYNTAX);
|
|
|
|
ctx->cc_if_depth--;
|
|
return 0;
|
|
}
|
|
|
|
if(!ctx->script->cc)
|
|
return lex_error(ctx, JS_E_DISABLED_CC);
|
|
|
|
while(ctx->ptr+id_len < ctx->end && is_identifier_char(ctx->ptr[id_len]))
|
|
id_len++;
|
|
if(!id_len)
|
|
return '@';
|
|
|
|
TRACE("var %s\n", debugstr_wn(ctx->ptr, id_len));
|
|
|
|
var = find_cc_var(ctx->script->cc, ctx->ptr, id_len);
|
|
ctx->ptr += id_len;
|
|
if(!var || var->val.is_num) {
|
|
*(literal_t**)lval = new_double_literal(ctx, var ? var->val.u.n : NAN);
|
|
return tNumericLiteral;
|
|
}
|
|
|
|
*(literal_t**)lval = new_boolean_literal(ctx, var->val.u.b);
|
|
return tBooleanLiteral;
|
|
}
|
|
|
|
int parser_lex(void *lval, parser_ctx_t *ctx)
|
|
{
|
|
int ret;
|
|
|
|
ctx->nl = ctx->ptr == ctx->begin;
|
|
|
|
do {
|
|
ret = next_token(ctx, lval);
|
|
} while(ret == '@' && !(ret = cc_token(ctx, lval)));
|
|
|
|
return ret;
|
|
}
|
|
|
|
literal_t *parse_regexp(parser_ctx_t *ctx)
|
|
{
|
|
const WCHAR *re, *flags_ptr;
|
|
BOOL in_class = FALSE;
|
|
DWORD re_len, flags;
|
|
literal_t *ret;
|
|
HRESULT hres;
|
|
|
|
TRACE("\n");
|
|
|
|
while(*--ctx->ptr != '/');
|
|
|
|
/* Simple regexp pre-parser; '/' if used in char class does not terminate regexp literal */
|
|
re = ++ctx->ptr;
|
|
while(ctx->ptr < ctx->end) {
|
|
if(*ctx->ptr == '\\') {
|
|
if(++ctx->ptr == ctx->end)
|
|
break;
|
|
}else if(in_class) {
|
|
if(*ctx->ptr == '\n')
|
|
break;
|
|
if(*ctx->ptr == ']')
|
|
in_class = FALSE;
|
|
}else {
|
|
if(*ctx->ptr == '/')
|
|
break;
|
|
|
|
if(*ctx->ptr == '[')
|
|
in_class = TRUE;
|
|
}
|
|
ctx->ptr++;
|
|
}
|
|
|
|
if(ctx->ptr == ctx->end || *ctx->ptr != '/') {
|
|
WARN("pre-parsing failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
re_len = ctx->ptr-re;
|
|
|
|
flags_ptr = ++ctx->ptr;
|
|
while(ctx->ptr < ctx->end && iswalnum(*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 = compiler_alloc_string_len(ctx->compiler, re, re_len);
|
|
ret->u.regexp.flags = flags;
|
|
return ret;
|
|
}
|