android_external_webkit/JavaScriptCore/jsc.cpp at froyo-arabic · samer72/android_external_webkit · GitHub

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* 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 "CurrentTime.h"

#include "InitializeThreading.h"

#include "JSArray.h"

#include "JSFunction.h"

#include "JSLock.h"

#include "JSString.h"

#include "PrototypeFunction.h"

#include "SamplingTool.h"

#include <math.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#if !OS(WINDOWS)

#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) && !OS(WINCE)

#include <crtdbg.h>

#include <mmsystem.h>

#include <windows.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:

double m_startTime;

double m_stopTime;

};

void StopWatch::start()

{

m_startTime = currentTime();

}

void StopWatch::stop()

{

m_stopTime = currentTime();

}

long StopWatch::getElapsedMS()

{

return static_cast<long>((m_stopTime - m_startTime) * 1000);

}

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)

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()->collectAllGarbage();

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&)

{

// Technically, destroying the heap in the middle of JS execution is a no-no,

// but we want to maintain compatibility with the Mozilla test suite, so

// we pretend that execution has terminated to avoid ASSERTs, then tear down the heap.

exec->globalData().dynamicGlobalObject = 0;

cleanupGlobalData(&exec->globalData());

exit(EXIT_SUCCESS);

#if COMPILER(MSVC) && OS(WINCE)

// Without this, Visual Studio will complain that this method does not return a value.

return jsUndefined();

#endif

}

// 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) && OS(WINDOWS)

_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) && !OS(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);

JSGlobalData* globalData = globalObject->globalData();

#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]";

}

globalData->startSampling();

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());

}

globalData->stopSampling();

globalObject->globalExec()->clearException();

}

#if ENABLE(SAMPLING_FLAGS)

SamplingFlags::stop();

#endif

globalData->dumpSampleData(globalObject->globalExec());

#if ENABLE(SAMPLING_COUNTERS)

AbstractSamplingCounter::dump();

#endif

return success;

}

#define RUNNING_FROM_XCODE 0

static void runInteractive(GlobalObject* globalObject)

{

while (true) {

#if HAVE(READLINE) && !RUNNING_FROM_XCODE

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

printf("%s", 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);

}

if (line.isEmpty())

break;

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")) {

if (++i == argc)

printUsageStatement(globalData);

options.scripts.append(Script(true, argv[i]));

continue;

}

if (!strcmp(arg, "-e")) {

if (++i == argc)

printUsageStatement(globalData);

options.scripts.append(Script(false, argv[i]));

continue;

}

if (!strcmp(arg, "-i")) {

options.interactive = true;

continue;

}

if (!strcmp(arg, "-d")) {

options.dump = true;

continue;

}

if (!strcmp(arg, "-s")) {

#if HAVE(SIGNAL_H)

signal(SIGILL, _exit);

signal(SIGFPE, _exit);

signal(SIGBUS, _exit);

signal(SIGSEGV, _exit);

#endif

continue;

}

if (!strcmp(arg, "--")) {

++i;

break;

}

if (!strcmp(arg, "-h") || !strcmp(arg, "--help"))

printUsageStatement(globalData, true);

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 bufferSize = 0;

size_t bufferCapacity = 1024;

buffer.resize(bufferCapacity);

while (!feof(f) && !ferror(f)) {

bufferSize += fread(buffer.data() + bufferSize, 1, bufferCapacity - bufferSize, f);

if (bufferSize == bufferCapacity) { // guarantees space for trailing '\0'

bufferCapacity *= 2;

buffer.resize(bufferCapacity);

}

fclose(f);

buffer[bufferSize] = '\0';

return true;

}

android_external_webkit/JavaScriptCore/jsc.cpp at froyo-arabic · samer72/android_external_webkit · GitHub

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