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 "JSGlobalObject.h"
  29 #include "JSLock.h"
  30 #include "Interpreter.h"
  31 #include "Parser.h"
  32 #include "Debugger.h"
  33 #include <wtf/WTFThreadData.h>
  34 #include <stdio.h>
  35
  36 namespace JSC {
  37
  38 bool checkSyntax(ExecState* exec, const SourceCode& source, JSValue* returnedException)
  39 {
  40     JSLockHolder lock(exec);
  41     ASSERT(exec->globalData().identifierTable == wtfThreadData().currentIdentifierTable());
  42
  43     ProgramExecutable* program = ProgramExecutable::create(exec, source);
  44     JSObject* error = program->checkSyntax(exec);
  45     if (error) {
  46         if (returnedException)
  47             *returnedException = error;
  48         return false;
  49     }
  50
  51     return true;
  52 }
  53
  54 JSValue evaluate(ExecState* exec, ScopeChainNode* scopeChain, const SourceCode& source, JSValue thisValue, JSValue* returnedException)
  55 {
  56     JSLockHolder lock(exec);
  57     ASSERT(exec->globalData().identifierTable == wtfThreadData().currentIdentifierTable());
  58     if (exec->globalData().isCollectorBusy())
  59         CRASH();
  60
  61     CodeProfiling profile(source);
  62
  63     ProgramExecutable* program = ProgramExecutable::create(exec, source);
  64     if (!program) {
  65         if (returnedException)
  66             *returnedException = exec->globalData().exception;
  67
  68         exec->globalData().exception = JSValue();
  69         return jsUndefined();
  70     }
  71
  72     if (!thisValue || thisValue.isUndefinedOrNull())
  73         thisValue = exec->dynamicGlobalObject();
  74     JSObject* thisObj = thisValue.toThisObject(exec);
  75     JSValue result = exec->interpreter()->execute(program, exec, scopeChain, thisObj);
  76
  77     if (exec->hadException()) {
  78         if (returnedException)
  79             *returnedException = exec->exception();
  80
  81         exec->clearException();
  82         return jsUndefined();
  83     }
  84
  85     ASSERT(result);
  86     return result;
  87 }
  88
  89 } // namespace JSC