runtime/Completion.cpp

   1 /*
   2  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   4  *  Copyright (C) 2003, 2007 Apple Inc.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Library General Public
   8  *  License as published by the Free Software Foundation; either
   9  *  version 2 of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Library General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Library General Public License
  17  *  along with this library; see the file COPYING.LIB.  If not, write to
  18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #include "config.h"
  24 #include "Completion.h"
  25
  26 #include "CallFrame.h"
  27 #include "CodeProfiling.h"
  28 #include "Debugger.h"
  29 #include "Interpreter.h"
  30 #include "JSGlobalObject.h"
  31 #include "JSLock.h"
  32 #include "Operations.h"
  33 #include "Parser.h"
  34 #include <wtf/WTFThreadData.h>
  35 #include <stdio.h>
  36
  37 namespace JSC {
  38
  39 bool checkSyntax(ExecState* exec, const SourceCode& source, JSValue* returnedException)
  40 {
  41     JSLockHolder lock(exec);
  42     RELEASE_ASSERT(exec->vm().identifierTable == wtfThreadData().currentIdentifierTable());
  43
  44     ProgramExecutable* program = ProgramExecutable::create(exec, source);
  45     JSObject* error = program->checkSyntax(exec);
  46     if (error) {
  47         if (returnedException)
  48             *returnedException = error;
  49         return false;
  50     }
  51
  52     return true;
  53 }
  54
  55 bool checkSyntax(VM& vm, const SourceCode& source, ParserError& error)
  56 {
  57     JSLockHolder lock(vm);
  58     RELEASE_ASSERT(vm.identifierTable == wtfThreadData().currentIdentifierTable());
  59     RefPtr<ProgramNode> programNode = parse<ProgramNode>(&vm, source, 0, Identifier(), JSParseNormal, JSParseProgramCode, error);
  60     return programNode;
  61 }
  62
  63 JSValue evaluate(ExecState* exec, const SourceCode& source, JSValue thisValue, JSValue* returnedException)
  64 {
  65     JSLockHolder lock(exec);
  66     RELEASE_ASSERT(exec->vm().identifierTable == wtfThreadData().currentIdentifierTable());
  67     RELEASE_ASSERT(!exec->vm().isCollectorBusy());
  68
  69     CodeProfiling profile(source);
  70
  71     ProgramExecutable* program = ProgramExecutable::create(exec, source);
  72     if (!program) {
  73         if (returnedException)
  74             *returnedException = exec->vm().exception;
  75
  76         exec->vm().exception = JSValue();
  77         return jsUndefined();
  78     }
  79
  80     if (!thisValue || thisValue.isUndefinedOrNull())
  81         thisValue = exec->dynamicGlobalObject();
  82     JSObject* thisObj = thisValue.toThisObject(exec);
  83     JSValue result = exec->interpreter()->execute(program, exec, thisObj);
  84
  85     if (exec->hadException()) {
  86         if (returnedException)
  87             *returnedException = exec->exception();
  88
  89         exec->clearException();
  90         return jsUndefined();
  91     }
  92
  93     RELEASE_ASSERT(result);
  94     return result;
  95 }
  96
  97 } // namespace JSC