android_external_webkit/JavaScriptCore/runtime/Executable.h at froyo · Y6b/android_external_webkit · GitHub

History

356 lines (296 loc) · 11.3 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR

* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef Executable_h

#define Executable_h

#include "JSFunction.h"

#include "Interpreter.h"

#include "Nodes.h"

#include "SamplingTool.h"

namespace JSC {

class CodeBlock;

class Debugger;

class EvalCodeBlock;

class ProgramCodeBlock;

class ScopeChainNode;

struct ExceptionInfo;

class ExecutableBase : public RefCounted<ExecutableBase> {

friend class JIT;

protected:

static const int NUM_PARAMETERS_IS_HOST = 0;

static const int NUM_PARAMETERS_NOT_COMPILED = -1;

public:

ExecutableBase(int numParameters)

: m_numParameters(numParameters)

{

}

virtual ~ExecutableBase() {}

bool isHostFunction() const { return m_numParameters == NUM_PARAMETERS_IS_HOST; }

protected:

int m_numParameters;

#if ENABLE(JIT)

public:

JITCode& generatedJITCode()

{

ASSERT(m_jitCode);

return m_jitCode;

}

ExecutablePool* getExecutablePool()

{

return m_jitCode.getExecutablePool();

}

protected:

JITCode m_jitCode;

#endif

};

#if ENABLE(JIT)

class NativeExecutable : public ExecutableBase {

public:

NativeExecutable(ExecState* exec)

: ExecutableBase(NUM_PARAMETERS_IS_HOST)

{

m_jitCode = JITCode(JITCode::HostFunction(exec->globalData().jitStubs.ctiNativeCallThunk()));

}

~NativeExecutable();

};

#endif

class VPtrHackExecutable : public ExecutableBase {

public:

VPtrHackExecutable()

: ExecutableBase(NUM_PARAMETERS_IS_HOST)

{

}

~VPtrHackExecutable();

};

class ScriptExecutable : public ExecutableBase {

public:

ScriptExecutable(JSGlobalData* globalData, const SourceCode& source)

: ExecutableBase(NUM_PARAMETERS_NOT_COMPILED)

, m_source(source)

, m_features(0)

{

#if ENABLE(CODEBLOCK_SAMPLING)

if (SamplingTool* sampler = globalData->interpreter->sampler())

sampler->notifyOfScope(this);

#else

UNUSED_PARAM(globalData);

#endif

}

ScriptExecutable(ExecState* exec, const SourceCode& source)

: ExecutableBase(NUM_PARAMETERS_NOT_COMPILED)

, m_source(source)

, m_features(0)

{

#if ENABLE(CODEBLOCK_SAMPLING)

if (SamplingTool* sampler = exec->globalData().interpreter->sampler())

sampler->notifyOfScope(this);

#else

UNUSED_PARAM(exec);

#endif

}

const SourceCode& source() { return m_source; }

intptr_t sourceID() const { return m_source.provider()->asID(); }

const UString& sourceURL() const { return m_source.provider()->url(); }

int lineNo() const { return m_firstLine; }

int lastLine() const { return m_lastLine; }

bool usesEval() const { return m_features & EvalFeature; }

bool usesArguments() const { return m_features & ArgumentsFeature; }

bool needsActivation() const { return m_features & (EvalFeature | ClosureFeature | WithFeature | CatchFeature); }

virtual ExceptionInfo* reparseExceptionInfo(JSGlobalData*, ScopeChainNode*, CodeBlock*) = 0;

protected:

void recordParse(CodeFeatures features, int firstLine, int lastLine)

{

m_features = features;

m_firstLine = firstLine;

m_lastLine = lastLine;

}

SourceCode m_source;

CodeFeatures m_features;

int m_firstLine;

int m_lastLine;

};

class EvalExecutable : public ScriptExecutable {

public:

~EvalExecutable();

EvalCodeBlock& bytecode(ExecState* exec, ScopeChainNode* scopeChainNode)

{

if (!m_evalCodeBlock) {

JSObject* error = compile(exec, scopeChainNode);

ASSERT_UNUSED(!error, error);

}

return *m_evalCodeBlock;

}

JSObject* compile(ExecState*, ScopeChainNode*);

ExceptionInfo* reparseExceptionInfo(JSGlobalData*, ScopeChainNode*, CodeBlock*);

static PassRefPtr<EvalExecutable> create(ExecState* exec, const SourceCode& source) { return adoptRef(new EvalExecutable(exec, source)); }

private:

EvalExecutable(ExecState* exec, const SourceCode& source)

: ScriptExecutable(exec, source)

, m_evalCodeBlock(0)

{

}

EvalCodeBlock* m_evalCodeBlock;

#if ENABLE(JIT)

public:

JITCode& jitCode(ExecState* exec, ScopeChainNode* scopeChainNode)

{

if (!m_jitCode)

generateJITCode(exec, scopeChainNode);

return m_jitCode;

}

private:

void generateJITCode(ExecState*, ScopeChainNode*);

#endif

};

class ProgramExecutable : public ScriptExecutable {

public:

static PassRefPtr<ProgramExecutable> create(ExecState* exec, const SourceCode& source)

{

return adoptRef(new ProgramExecutable(exec, source));

}

~ProgramExecutable();

ProgramCodeBlock& bytecode(ExecState* exec, ScopeChainNode* scopeChainNode)

{

if (!m_programCodeBlock) {

JSObject* error = compile(exec, scopeChainNode);

ASSERT_UNUSED(!error, error);

}

return *m_programCodeBlock;

}

JSObject* checkSyntax(ExecState*);

JSObject* compile(ExecState*, ScopeChainNode*);

// CodeBlocks for program code are transient and therefore do not gain from from throwing out there exception information.

ExceptionInfo* reparseExceptionInfo(JSGlobalData*, ScopeChainNode*, CodeBlock*) { ASSERT_NOT_REACHED(); return 0; }

private:

ProgramExecutable(ExecState* exec, const SourceCode& source)

: ScriptExecutable(exec, source)

, m_programCodeBlock(0)

{

}

ProgramCodeBlock* m_programCodeBlock;

#if ENABLE(JIT)

public:

JITCode& jitCode(ExecState* exec, ScopeChainNode* scopeChainNode)

{

if (!m_jitCode)

generateJITCode(exec, scopeChainNode);

return m_jitCode;

}

private:

void generateJITCode(ExecState*, ScopeChainNode*);

#endif

};

class FunctionExecutable : public ScriptExecutable {

friend class JIT;

public:

static PassRefPtr<FunctionExecutable> create(ExecState* exec, const Identifier& name, const SourceCode& source, bool forceUsesArguments, FunctionParameters* parameters, int firstLine, int lastLine)

{

return adoptRef(new FunctionExecutable(exec, name, source, forceUsesArguments, parameters, firstLine, lastLine));

}

static PassRefPtr<FunctionExecutable> create(JSGlobalData* globalData, const Identifier& name, const SourceCode& source, bool forceUsesArguments, FunctionParameters* parameters, int firstLine, int lastLine)

{

return adoptRef(new FunctionExecutable(globalData, name, source, forceUsesArguments, parameters, firstLine, lastLine));

}

~FunctionExecutable();

JSFunction* make(ExecState* exec, ScopeChainNode* scopeChain)

{

return new (exec) JSFunction(exec, this, scopeChain);

}

CodeBlock& bytecode(ExecState* exec, ScopeChainNode* scopeChainNode)

{

ASSERT(scopeChainNode);

if (!m_codeBlock)

compile(exec, scopeChainNode);

return *m_codeBlock;

}

bool isGenerated() const

{

return m_codeBlock;

}

CodeBlock& generatedBytecode()

{

ASSERT(m_codeBlock);

return *m_codeBlock;

}

const Identifier& name() { return m_name; }

size_t parameterCount() const { return m_parameters->size(); }

size_t variableCount() const { return m_numVariables; }

UString paramString() const;

void recompile(ExecState*);

ExceptionInfo* reparseExceptionInfo(JSGlobalData*, ScopeChainNode*, CodeBlock*);

void markAggregate(MarkStack& markStack);

static PassRefPtr<FunctionExecutable> fromGlobalCode(const Identifier&, ExecState*, Debugger*, const SourceCode&, int* errLine = 0, UString* errMsg = 0);

private:

FunctionExecutable(JSGlobalData* globalData, const Identifier& name, const SourceCode& source, bool forceUsesArguments, FunctionParameters* parameters, int firstLine, int lastLine)

: ScriptExecutable(globalData, source)

, m_forceUsesArguments(forceUsesArguments)

, m_parameters(parameters)

, m_codeBlock(0)

, m_name(name)

, m_numVariables(0)

{

m_firstLine = firstLine;

m_lastLine = lastLine;

}

FunctionExecutable(ExecState* exec, const Identifier& name, const SourceCode& source, bool forceUsesArguments, FunctionParameters* parameters, int firstLine, int lastLine)

: ScriptExecutable(exec, source)

, m_forceUsesArguments(forceUsesArguments)

, m_parameters(parameters)

, m_codeBlock(0)

, m_name(name)

, m_numVariables(0)

{

m_firstLine = firstLine;

m_lastLine = lastLine;

}

void compile(ExecState*, ScopeChainNode*);

bool m_forceUsesArguments;

RefPtr<FunctionParameters> m_parameters;

CodeBlock* m_codeBlock;

Identifier m_name;

size_t m_numVariables;

#if ENABLE(JIT)

public:

JITCode& jitCode(ExecState* exec, ScopeChainNode* scopeChainNode)

{

if (!m_jitCode)

generateJITCode(exec, scopeChainNode);

return m_jitCode;

}

private:

void generateJITCode(ExecState*, ScopeChainNode*);

#endif

};

inline FunctionExecutable* JSFunction::jsExecutable() const

{

ASSERT(!isHostFunctionNonInline());

return static_cast<FunctionExecutable*>(m_executable.get());

}

inline bool JSFunction::isHostFunction() const

{

ASSERT(m_executable);

return m_executable->isHostFunction();

}

#endif

android_external_webkit/JavaScriptCore/runtime/Executable.h at froyo · Y6b/android_external_webkit · GitHub

Expand file tree

Breadcrumbs

Executable.h

Latest commit

History

Breadcrumbs

Executable.h

File metadata and controls