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, 2013 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 "JSCInlines.h"
  33 #include "Parser.h"
  34 #include <wtf/WTFThreadData.h>
  35
  36 namespace JSC {
  37
  38 bool checkSyntax(ExecState* exec, const SourceCode& source, JSValue* returnedException)
  39 {
  40     JSLockHolder lock(exec);
  41     RELEASE_ASSERT(exec->vm().atomicStringTable() == wtfThreadData().atomicStringTable());
  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 bool checkSyntax(VM& vm, const SourceCode& source, ParserError& error)
  55 {
  56     JSLockHolder lock(vm);
  57     RELEASE_ASSERT(vm.atomicStringTable() == wtfThreadData().atomicStringTable());
  58     RefPtr<ProgramNode> programNode = parse<ProgramNode>(&vm, source, 0, Identifier(), JSParseNormal, JSParseProgramCode, error);
  59     return programNode;
  60 }
  61
  62 JSValue evaluate(ExecState* exec, const SourceCode& source, JSValue thisValue, JSValue* returnedException)
  63 {
  64     JSLockHolder lock(exec);
  65     RELEASE_ASSERT(exec->vm().atomicStringTable() == wtfThreadData().atomicStringTable());
  66     RELEASE_ASSERT(!exec->vm().isCollectorBusy());
  67
  68     CodeProfiling profile(source);
  69
  70     ProgramExecutable* program = ProgramExecutable::create(exec, source);
  71     if (!program) {
  72         if (returnedException)
  73             *returnedException = exec->vm().exception();
  74
  75         exec->vm().clearException();
  76         return jsUndefined();
  77     }
  78
  79     if (!thisValue || thisValue.isUndefinedOrNull())
  80         thisValue = exec->vmEntryGlobalObject();
  81     JSObject* thisObj = jsCast<JSObject*>(thisValue.toThis(exec, NotStrictMode));
  82     JSValue result = exec->interpreter()->execute(program, exec, thisObj);
  83
  84     if (exec->hadException()) {
  85         if (returnedException)
  86             *returnedException = exec->exception();
  87
  88         exec->clearException();
  89         return jsUndefined();
  90     }
  91
  92     RELEASE_ASSERT(result);
  93     return result;
  94 }
  95
  96 } // namespace JSC