Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
branch: master
Fetching contributors…

Cannot retrieve contributors at this time

488 lines (416 sloc) 15.717 kb
/*
* 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 "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 PLATFORM(UNIX)
#include <signal.h>
#endif
#if COMPILER(MSVC) && !PLATFORM(WIN_CE)
#include <crtdbg.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 JSValuePtr functionPrint(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static JSValuePtr functionDebug(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static JSValuePtr functionGC(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static JSValuePtr functionVersion(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static JSValuePtr functionRun(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static JSValuePtr functionLoad(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static JSValuePtr functionReadline(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static NO_RETURN JSValuePtr functionQuit(ExecState*, JSObject*, JSValuePtr, const ArgList&);
struct Options {
Options()
: interactive(false)
, dump(false)
{
}
bool interactive;
bool dump;
Vector<UString> fileNames;
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()) PrototypeFunction(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "debug"), functionDebug));
putDirectFunction(globalExec(), new (globalExec()) PrototypeFunction(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "print"), functionPrint));
putDirectFunction(globalExec(), new (globalExec()) PrototypeFunction(globalExec(), prototypeFunctionStructure(), 0, Identifier(globalExec(), "quit"), functionQuit));
putDirectFunction(globalExec(), new (globalExec()) PrototypeFunction(globalExec(), prototypeFunctionStructure(), 0, Identifier(globalExec(), "gc"), functionGC));
putDirectFunction(globalExec(), new (globalExec()) PrototypeFunction(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "version"), functionVersion));
putDirectFunction(globalExec(), new (globalExec()) PrototypeFunction(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "run"), functionRun));
putDirectFunction(globalExec(), new (globalExec()) PrototypeFunction(globalExec(), prototypeFunctionStructure(), 1, Identifier(globalExec(), "load"), functionLoad));
putDirectFunction(globalExec(), new (globalExec()) PrototypeFunction(globalExec(), prototypeFunctionStructure(), 0, Identifier(globalExec(), "readline"), functionReadline));
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);
}
JSValuePtr functionPrint(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
{
for (unsigned i = 0; i < args.size(); ++i) {
if (i != 0)
putchar(' ');
printf("%s", args.at(exec, i).toString(exec).UTF8String().c_str());
}
putchar('\n');
fflush(stdout);
return jsUndefined();
}
JSValuePtr functionDebug(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
{
fprintf(stderr, "--> %s\n", args.at(exec, 0).toString(exec).UTF8String().c_str());
return jsUndefined();
}
JSValuePtr functionGC(ExecState* exec, JSObject*, JSValuePtr, const ArgList&)
{
JSLock lock(false);
exec->heap()->collect();
return jsUndefined();
}
JSValuePtr functionVersion(ExecState*, JSObject*, JSValuePtr, 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();
}
JSValuePtr functionRun(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
{
StopWatch stopWatch;
UString fileName = args.at(exec, 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());
}
JSValuePtr functionLoad(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
{
UString fileName = args.at(exec, 0).toString(exec);
Vector<char> script;
if (!fillBufferWithContentsOfFile(fileName, script))
return throwError(exec, GeneralError, "Could not open file.");
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), makeSource(script.data(), fileName));
return jsUndefined();
}
JSValuePtr functionReadline(ExecState* exec, JSObject*, JSValuePtr, 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());
}
JSValuePtr functionQuit(ExecState* exec, JSObject*, JSValuePtr, 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 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(false);
globalData->heap.destroy();
globalData->deref();
}
static bool runWithScripts(GlobalObject* globalObject, const Vector<UString>& fileNames, bool dump)
{
Vector<char> script;
if (dump)
BytecodeGenerator::setDumpsGeneratedCode(true);
#if ENABLE(OPCODE_SAMPLING)
Interpreter* interpreter = globalObject->globalData()->interpreter;
interpreter->setSampler(new SamplingTool(interpreter));
#endif
bool success = true;
for (size_t i = 0; i < fileNames.size(); i++) {
UString fileName = fileNames[i];
if (!fillBufferWithContentsOfFile(fileName, script))
return false; // fail early so we can catch missing files
#if ENABLE(OPCODE_SAMPLING)
interpreter->sampler()->start();
#endif
Completion completion = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), makeSource(script.data(), 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());
}
globalObject->globalExec()->clearException();
#if ENABLE(OPCODE_SAMPLING)
interpreter->sampler()->stop();
#endif
}
#if ENABLE(OPCODE_SAMPLING)
interpreter->sampler()->dump(globalObject->globalExec());
delete interpreter->sampler();
#endif
return success;
}
static 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()
{
fprintf(stderr, "Usage: jsc [options] [files] [-- arguments]\n");
fprintf(stderr, " -d Dumps bytecode (debug builds only)\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");
fprintf(stderr, " -s Installs signal handlers that exit on a crash (Unix platforms only)\n");
exit(EXIT_FAILURE);
}
static void parseArguments(int argc, char** argv, Options& options)
{
int i = 1;
for (; i < argc; ++i) {
const char* arg = argv[i];
if (strcmp(arg, "-f") == 0) {
if (++i == argc)
printUsageStatement();
options.fileNames.append(argv[i]);
continue;
}
if (strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0) {
printUsageStatement();
}
if (strcmp(arg, "-i") == 0) {
options.interactive = true;
continue;
}
if (strcmp(arg, "-d") == 0) {
options.dump = true;
continue;
}
if (strcmp(arg, "-s") == 0) {
#if PLATFORM(UNIX)
signal(SIGILL, _exit);
signal(SIGFPE, _exit);
signal(SIGBUS, _exit);
signal(SIGSEGV, _exit);
#endif
continue;
}
if (strcmp(arg, "--") == 0) {
++i;
break;
}
options.fileNames.append(argv[i]);
}
if (options.fileNames.isEmpty())
options.interactive = true;
for (; i < argc; ++i)
options.arguments.append(argv[i]);
}
int jscmain(int argc, char** argv, JSGlobalData* globalData)
{
JSLock lock(false);
Options options;
parseArguments(argc, argv, options);
GlobalObject* globalObject = new (globalData) GlobalObject(options.arguments);
bool success = runWithScripts(globalObject, options.fileNames, 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;
}
Jump to Line
Something went wrong with that request. Please try again.