Separate the copy of JavaScriptCore that QtScript uses from the copy that

QtWebKit uses.

This is needed to decouple QtScript from QtWebKit, as discussed in the
WebKit team.

Reviewed-by: Kent Hansen

1 files changed, 590 insertions, 0 deletions

diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/jsc.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/jsc.cpp
new file mode 100644
index 0000000..190deff
--- /dev/null
+++ b/src/3rdparty/javascriptcore/JavaScriptCore/jsc.cpp
@@ -0,0 +1,590 @@
+/*
+ *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *  Copyright (C) 2006 Bjoern Graf (bjoern.graf@gmail.com)
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+
+#include "BytecodeGenerator.h"
+#include "Completion.h"
+#include "InitializeThreading.h"
+#include "JSArray.h"
+#include "JSFunction.h"
+#include "JSLock.h"
+#include "PrototypeFunction.h"
+#include "SamplingTool.h"
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if !PLATFORM(WIN_OS)
+#include <unistd.h>
+#endif
+
+#if HAVE(READLINE)
+#include <readline/history.h>
+#include <readline/readline.h>
+#endif
+
+#if HAVE(SYS_TIME_H)
+#include <sys/time.h>
+#endif
+
+#if HAVE(SIGNAL_H)
+#include <signal.h>
+#endif
+
+#if COMPILER(MSVC) && !PLATFORM(WINCE)
+#include <crtdbg.h>
+#include <windows.h>
+#include <mmsystem.h>
+#endif
+
+#if PLATFORM(QT)
+#include <QCoreApplication>
+#include <QDateTime>
+#endif
+
+using namespace JSC;
+using namespace WTF;
+
+static void cleanupGlobalData(JSGlobalData*);
+static bool fillBufferWithContentsOfFile(const UString& fileName, Vector<char>& buffer);
+
+static JSValue JSC_HOST_CALL functionPrint(ExecState*, JSObject*, JSValue, const ArgList&);
+static JSValue JSC_HOST_CALL functionDebug(ExecState*, JSObject*, JSValue, const ArgList&);
+static JSValue JSC_HOST_CALL functionGC(ExecState*, JSObject*, JSValue, const ArgList&);
+static JSValue JSC_HOST_CALL functionVersion(ExecState*, JSObject*, JSValue, const ArgList&);
+static JSValue JSC_HOST_CALL functionRun(ExecState*, JSObject*, JSValue, const ArgList&);
+static JSValue JSC_HOST_CALL functionLoad(ExecState*, JSObject*, JSValue, const ArgList&);
+static JSValue JSC_HOST_CALL functionCheckSyntax(ExecState*, JSObject*, JSValue, const ArgList&);
+static JSValue JSC_HOST_CALL functionReadline(ExecState*, JSObject*, JSValue, const ArgList&);
+static NO_RETURN JSValue JSC_HOST_CALL functionQuit(ExecState*, JSObject*, JSValue, const ArgList&);
+
+#if ENABLE(SAMPLING_FLAGS)
+static JSValue JSC_HOST_CALL functionSetSamplingFlags(ExecState*, JSObject*, JSValue, const ArgList&);
+static JSValue JSC_HOST_CALL functionClearSamplingFlags(ExecState*, JSObject*, JSValue, const ArgList&);
+#endif
+
+struct Script {
+    bool isFile;
+    char *argument;
+    
+    Script(bool isFile, char *argument)
+        : isFile(isFile)
+        , argument(argument)
+    {
+    }
+};
+
+struct Options {
+    Options()
+        : interactive(false)
+        , dump(false)
+    {
+    }
+
+    bool interactive;
+    bool dump;
+    Vector<Script> scripts;
+    Vector<UString> arguments;
+};
+
+static const char interactivePrompt[] = "> ";
+static const UString interpreterName("Interpreter");
+
+class StopWatch {
+public:
+    void start();
+    void stop();
+    long getElapsedMS(); // call stop() first
+
+private:
+#if PLATFORM(QT)
+    uint m_startTime;
+    uint m_stopTime;
+#elif PLATFORM(WIN_OS)
+    DWORD m_startTime;
+    DWORD m_stopTime;
+#else
+    // Windows does not have timeval, disabling this class for now (bug 7399)
+    timeval m_startTime;
+    timeval m_stopTime;
+#endif
+};
+
+void StopWatch::start()
+{
+#if PLATFORM(QT)
+    QDateTime t = QDateTime::currentDateTime();
+    m_startTime = t.toTime_t() * 1000 + t.time().msec();
+#elif PLATFORM(WIN_OS)
+    m_startTime = timeGetTime();
+#else
+    gettimeofday(&m_startTime, 0);
+#endif
+}
+
+void StopWatch::stop()
+{
+#if PLATFORM(QT)
+    QDateTime t = QDateTime::currentDateTime();
+    m_stopTime = t.toTime_t() * 1000 + t.time().msec();
+#elif PLATFORM(WIN_OS)
+    m_stopTime = timeGetTime();
+#else
+    gettimeofday(&m_stopTime, 0);
+#endif
+}
+
+long StopWatch::getElapsedMS()
+{
+#if PLATFORM(WIN_OS) || PLATFORM(QT)
+    return m_stopTime - m_startTime;
+#else
+    timeval elapsedTime;
+    timersub(&m_stopTime, &m_startTime, &elapsedTime);
+
+    return elapsedTime.tv_sec * 1000 + lroundf(elapsedTime.tv_usec / 1000.0f);
+#endif
+}
+
+class GlobalObject : public JSGlobalObject {
+public:
+    GlobalObject(const Vector<UString>& arguments);
+    virtual UString className() const { return "global"; }
+};
+COMPILE_ASSERT(!IsInteger<GlobalObject>::value, WTF_IsInteger_GlobalObject_false);
+ASSERT_CLASS_FITS_IN_CELL(GlobalObject);
+
+GlobalObject::GlobalObject(const Vector<UString>& arguments)
+    : JSGlobalObject()
+{
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "debug"), functionDebug));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "print"), functionPrint));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 0, Identifier(globalExec(), "quit"), functionQuit));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 0, Identifier(globalExec(), "gc"), functionGC));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "version"), functionVersion));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "run"), functionRun));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "load"), functionLoad));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "checkSyntax"), functionCheckSyntax));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 0, Identifier(globalExec(), "readline"), functionReadline));
+
+#if ENABLE(SAMPLING_FLAGS)
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "setSamplingFlags"), functionSetSamplingFlags));
+    putDirectFunction(globalExec(), new (globalExec()) NativeFunctionWrapper(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "clearSamplingFlags"), functionClearSamplingFlags));
+#endif
+
+    JSObject* array = constructEmptyArray(globalExec());
+    for (size_t i = 0; i < arguments.size(); ++i)
+        array->put(globalExec(), i, jsString(globalExec(), arguments[i]));
+    putDirect(Identifier(globalExec(), "arguments"), array);
+}
+
+JSValue JSC_HOST_CALL functionPrint(ExecState* exec, JSObject*, JSValue, const ArgList& args)
+{
+    for (unsigned i = 0; i < args.size(); ++i) {
+        if (i != 0)
+            putchar(' ');
+        
+        printf("%s", args.at(i).toString(exec).UTF8String().c_str());
+    }
+    
+    putchar('\n');
+    fflush(stdout);
+    return jsUndefined();
+}
+
+JSValue JSC_HOST_CALL functionDebug(ExecState* exec, JSObject*, JSValue, const ArgList& args)
+{
+    fprintf(stderr, "--> %s\n", args.at(0).toString(exec).UTF8String().c_str());
+    return jsUndefined();
+}
+
+JSValue JSC_HOST_CALL functionGC(ExecState* exec, JSObject*, JSValue, const ArgList&)
+{
+    JSLock lock(SilenceAssertionsOnly);
+    exec->heap()->collect();
+    return jsUndefined();
+}
+
+JSValue JSC_HOST_CALL functionVersion(ExecState*, JSObject*, JSValue, const ArgList&)
+{
+    // We need this function for compatibility with the Mozilla JS tests but for now
+    // we don't actually do any version-specific handling
+    return jsUndefined();
+}
+
+JSValue JSC_HOST_CALL functionRun(ExecState* exec, JSObject*, JSValue, const ArgList& args)
+{
+    StopWatch stopWatch;
+    UString fileName = args.at(0).toString(exec);
+    Vector<char> script;
+    if (!fillBufferWithContentsOfFile(fileName, script))
+        return throwError(exec, GeneralError, "Could not open file.");
+
+    JSGlobalObject* globalObject = exec->lexicalGlobalObject();
+
+    stopWatch.start();
+    evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), makeSource(script.data(), fileName));
+    stopWatch.stop();
+
+    return jsNumber(globalObject->globalExec(), stopWatch.getElapsedMS());
+}
+
+JSValue JSC_HOST_CALL functionLoad(ExecState* exec, JSObject* o, JSValue v, const ArgList& args)
+{
+    UNUSED_PARAM(o);
+    UNUSED_PARAM(v);
+    UString fileName = args.at(0).toString(exec);
+    Vector<char> script;
+    if (!fillBufferWithContentsOfFile(fileName, script))
+        return throwError(exec, GeneralError, "Could not open file.");
+
+    JSGlobalObject* globalObject = exec->lexicalGlobalObject();
+    Completion result = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), makeSource(script.data(), fileName));
+    if (result.complType() == Throw)
+        exec->setException(result.value());
+    return result.value();
+}
+
+JSValue JSC_HOST_CALL functionCheckSyntax(ExecState* exec, JSObject* o, JSValue v, const ArgList& args)
+{
+    UNUSED_PARAM(o);
+    UNUSED_PARAM(v);
+    UString fileName = args.at(0).toString(exec);
+    Vector<char> script;
+    if (!fillBufferWithContentsOfFile(fileName, script))
+        return throwError(exec, GeneralError, "Could not open file.");
+
+    JSGlobalObject* globalObject = exec->lexicalGlobalObject();
+    Completion result = checkSyntax(globalObject->globalExec(), makeSource(script.data(), fileName));
+    if (result.complType() == Throw)
+        exec->setException(result.value());
+    return result.value();
+}
+
+#if ENABLE(SAMPLING_FLAGS)
+JSValue JSC_HOST_CALL functionSetSamplingFlags(ExecState* exec, JSObject*, JSValue, const ArgList& args)
+{
+    for (unsigned i = 0; i < args.size(); ++i) {
+        unsigned flag = static_cast<unsigned>(args.at(i).toNumber(exec));
+        if ((flag >= 1) && (flag <= 32))
+            SamplingFlags::setFlag(flag);
+    }
+    return jsNull();
+}
+
+JSValue JSC_HOST_CALL functionClearSamplingFlags(ExecState* exec, JSObject*, JSValue, const ArgList& args)
+{
+    for (unsigned i = 0; i < args.size(); ++i) {
+        unsigned flag = static_cast<unsigned>(args.at(i).toNumber(exec));
+        if ((flag >= 1) && (flag <= 32))
+            SamplingFlags::clearFlag(flag);
+    }
+    return jsNull();
+}
+#endif
+
+JSValue JSC_HOST_CALL functionReadline(ExecState* exec, JSObject*, JSValue, const ArgList&)
+{
+    Vector<char, 256> line;
+    int c;
+    while ((c = getchar()) != EOF) {
+        // FIXME: Should we also break on \r? 
+        if (c == '\n')
+            break;
+        line.append(c);
+    }
+    line.append('\0');
+    return jsString(exec, line.data());
+}
+
+JSValue JSC_HOST_CALL functionQuit(ExecState* exec, JSObject*, JSValue, const ArgList&)
+{
+    cleanupGlobalData(&exec->globalData());
+    exit(EXIT_SUCCESS);
+}
+
+// Use SEH for Release builds only to get rid of the crash report dialog
+// (luckily the same tests fail in Release and Debug builds so far). Need to
+// be in a separate main function because the jscmain function requires object
+// unwinding.
+
+#if COMPILER(MSVC) && !defined(_DEBUG)
+#define TRY       __try {
+#define EXCEPT(x) } __except (EXCEPTION_EXECUTE_HANDLER) { x; }
+#else
+#define TRY
+#define EXCEPT(x)
+#endif
+
+int jscmain(int argc, char** argv, JSGlobalData*);
+
+int main(int argc, char** argv)
+{
+#if defined(_DEBUG) && PLATFORM(WIN_OS)
+    _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
+    _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
+    _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
+    _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
+    _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
+    _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
+#endif
+
+#if COMPILER(MSVC) && !PLATFORM(WINCE)
+    timeBeginPeriod(1);
+#endif
+
+#if PLATFORM(QT)
+    QCoreApplication app(argc, argv);
+#endif
+
+    // Initialize JSC before getting JSGlobalData.
+    JSC::initializeThreading();
+
+    // We can't use destructors in the following code because it uses Windows
+    // Structured Exception Handling
+    int res = 0;
+    JSGlobalData* globalData = JSGlobalData::create().releaseRef();
+    TRY
+        res = jscmain(argc, argv, globalData);
+    EXCEPT(res = 3)
+
+    cleanupGlobalData(globalData);
+    return res;
+}
+
+static void cleanupGlobalData(JSGlobalData* globalData)
+{
+    JSLock lock(SilenceAssertionsOnly);
+    globalData->heap.destroy();
+    globalData->deref();
+}
+
+static bool runWithScripts(GlobalObject* globalObject, const Vector<Script>& scripts, bool dump)
+{
+    UString script;
+    UString fileName;
+    Vector<char> scriptBuffer;
+
+    if (dump)
+        BytecodeGenerator::setDumpsGeneratedCode(true);
+
+#if ENABLE(OPCODE_SAMPLING)
+    Interpreter* interpreter = globalObject->globalData()->interpreter;
+    interpreter->setSampler(new SamplingTool(interpreter));
+    interpreter->sampler()->setup();
+#endif
+#if ENABLE(SAMPLING_FLAGS)
+    SamplingFlags::start();
+#endif
+
+    bool success = true;
+    for (size_t i = 0; i < scripts.size(); i++) {
+        if (scripts[i].isFile) {
+            fileName = scripts[i].argument;
+            if (!fillBufferWithContentsOfFile(fileName, scriptBuffer))
+                return false; // fail early so we can catch missing files
+            script = scriptBuffer.data();
+        } else {
+            script = scripts[i].argument;
+            fileName = "[Command Line]";
+        }
+
+#if ENABLE(SAMPLING_THREAD)
+        SamplingThread::start();
+#endif
+
+        Completion completion = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), makeSource(script, fileName));
+        success = success && completion.complType() != Throw;
+        if (dump) {
+            if (completion.complType() == Throw)
+                printf("Exception: %s\n", completion.value().toString(globalObject->globalExec()).ascii());
+            else
+                printf("End: %s\n", completion.value().toString(globalObject->globalExec()).ascii());
+        }
+
+#if ENABLE(SAMPLING_THREAD)
+        SamplingThread::stop();
+#endif
+
+        globalObject->globalExec()->clearException();
+    }
+
+#if ENABLE(SAMPLING_FLAGS)
+    SamplingFlags::stop();
+#endif
+#if ENABLE(OPCODE_SAMPLING)
+    interpreter->sampler()->dump(globalObject->globalExec());
+    delete interpreter->sampler();
+#endif
+#if ENABLE(SAMPLING_COUNTERS)
+    AbstractSamplingCounter::dump();
+#endif
+    return success;
+}
+
+static
+#if !HAVE(READLINE)
+NO_RETURN
+#endif
+void runInteractive(GlobalObject* globalObject)
+{
+    while (true) {
+#if HAVE(READLINE)
+        char* line = readline(interactivePrompt);
+        if (!line)
+            break;
+        if (line[0])
+            add_history(line);
+        Completion completion = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), makeSource(line, interpreterName));
+        free(line);
+#else
+        puts(interactivePrompt);
+        Vector<char, 256> line;
+        int c;
+        while ((c = getchar()) != EOF) {
+            // FIXME: Should we also break on \r? 
+            if (c == '\n')
+                break;
+            line.append(c);
+        }
+        line.append('\0');
+        Completion completion = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), makeSource(line.data(), interpreterName));
+#endif
+        if (completion.complType() == Throw)
+            printf("Exception: %s\n", completion.value().toString(globalObject->globalExec()).ascii());
+        else
+            printf("%s\n", completion.value().toString(globalObject->globalExec()).UTF8String().c_str());
+
+        globalObject->globalExec()->clearException();
+    }
+    printf("\n");
+}
+
+static NO_RETURN void printUsageStatement(JSGlobalData* globalData, bool help = false)
+{
+    fprintf(stderr, "Usage: jsc [options] [files] [-- arguments]\n");
+    fprintf(stderr, "  -d         Dumps bytecode (debug builds only)\n");
+    fprintf(stderr, "  -e         Evaluate argument as script code\n");
+    fprintf(stderr, "  -f         Specifies a source file (deprecated)\n");
+    fprintf(stderr, "  -h|--help  Prints this help message\n");
+    fprintf(stderr, "  -i         Enables interactive mode (default if no files are specified)\n");
+#if HAVE(SIGNAL_H)
+    fprintf(stderr, "  -s         Installs signal handlers that exit on a crash (Unix platforms only)\n");
+#endif
+
+    cleanupGlobalData(globalData);
+    exit(help ? EXIT_SUCCESS : EXIT_FAILURE);
+}
+
+static void parseArguments(int argc, char** argv, Options& options, JSGlobalData* globalData)
+{
+    int i = 1;
+    for (; i < argc; ++i) {
+        const char* arg = argv[i];
+        if (strcmp(arg, "-f") == 0) {
+            if (++i == argc)
+                printUsageStatement(globalData);
+            options.scripts.append(Script(true, argv[i]));
+            continue;
+        }
+        if (strcmp(arg, "-e") == 0) {
+            if (++i == argc)
+                printUsageStatement(globalData);
+            options.scripts.append(Script(false, argv[i]));
+            continue;
+        }
+        if (strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0) {
+            printUsageStatement(globalData, true);
+        }
+        if (strcmp(arg, "-i") == 0) {
+            options.interactive = true;
+            continue;
+        }
+        if (strcmp(arg, "-d") == 0) {
+            options.dump = true;
+            continue;
+        }
+        if (strcmp(arg, "-s") == 0) {
+#if HAVE(SIGNAL_H)
+            signal(SIGILL, _exit);
+            signal(SIGFPE, _exit);
+            signal(SIGBUS, _exit);
+            signal(SIGSEGV, _exit);
+#endif
+            continue;
+        }
+        if (strcmp(arg, "--") == 0) {
+            ++i;
+            break;
+        }
+        options.scripts.append(Script(true, argv[i]));
+    }
+    
+    if (options.scripts.isEmpty())
+        options.interactive = true;
+    
+    for (; i < argc; ++i)
+        options.arguments.append(argv[i]);
+}
+
+int jscmain(int argc, char** argv, JSGlobalData* globalData)
+{
+    JSLock lock(SilenceAssertionsOnly);
+
+    Options options;
+    parseArguments(argc, argv, options, globalData);
+
+    GlobalObject* globalObject = new (globalData) GlobalObject(options.arguments);
+    bool success = runWithScripts(globalObject, options.scripts, options.dump);
+    if (options.interactive && success)
+        runInteractive(globalObject);
+
+    return success ? 0 : 3;
+}
+
+static bool fillBufferWithContentsOfFile(const UString& fileName, Vector<char>& buffer)
+{
+    FILE* f = fopen(fileName.UTF8String().c_str(), "r");
+    if (!f) {
+        fprintf(stderr, "Could not open file: %s\n", fileName.UTF8String().c_str());
+        return false;
+    }
+
+    size_t buffer_size = 0;
+    size_t buffer_capacity = 1024;
+
+    buffer.resize(buffer_capacity);
+
+    while (!feof(f) && !ferror(f)) {
+        buffer_size += fread(buffer.data() + buffer_size, 1, buffer_capacity - buffer_size, f);
+        if (buffer_size == buffer_capacity) { // guarantees space for trailing '\0'
+            buffer_capacity *= 2;
+            buffer.resize(buffer_capacity);
+        }
+    }
+    fclose(f);
+    buffer[buffer_size] = '\0';
+
+    return true;
+}