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| 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 212 }; | 212 }; |
| 213 | 213 |
| 214 | 214 |
| 215 // The V8 compiler | 215 // The V8 compiler |
| 216 // | 216 // |
| 217 // General strategy: Source code is translated into an anonymous function w/o | 217 // General strategy: Source code is translated into an anonymous function w/o |
| 218 // parameters which then can be executed. If the source code contains other | 218 // parameters which then can be executed. If the source code contains other |
| 219 // functions, they will be compiled and allocated as part of the compilation | 219 // functions, they will be compiled and allocated as part of the compilation |
| 220 // of the source code. | 220 // of the source code. |
| 221 | 221 |
| 222 // Please note this interface returns function boilerplates. | 222 // Please note this interface returns shared function infos. |
| 223 // This means you need to call Factory::NewFunctionFromBoilerplate | 223 // This means you need to call Factory::NewFunctionFromSharedFunctionInfo |
| 224 // before you have a real function with context. | 224 // before you have a real function with a context. |
| 225 | 225 |
| 226 class Compiler : public AllStatic { | 226 class Compiler : public AllStatic { |
| 227 public: | 227 public: |
| 228 enum ValidationState { VALIDATE_JSON, DONT_VALIDATE_JSON }; | 228 enum ValidationState { VALIDATE_JSON, DONT_VALIDATE_JSON }; |
| 229 | 229 |
| 230 // All routines return a JSFunction. | 230 // All routines return a JSFunction. |
| 231 // If an error occurs an exception is raised and | 231 // If an error occurs an exception is raised and |
| 232 // the return handle contains NULL. | 232 // the return handle contains NULL. |
| 233 | 233 |
| 234 // Compile a String source within a context. | 234 // Compile a String source within a context. |
| 235 static Handle<JSFunction> Compile(Handle<String> source, | 235 static Handle<SharedFunctionInfo> Compile(Handle<String> source, |
| 236 Handle<Object> script_name, | 236 Handle<Object> script_name, |
| 237 int line_offset, int column_offset, | 237 int line_offset, |
| 238 v8::Extension* extension, | 238 int column_offset, |
| 239 ScriptDataImpl* pre_data, | 239 v8::Extension* extension, |
| 240 Handle<Object> script_data, | 240 ScriptDataImpl* pre_data, |
| 241 NativesFlag is_natives_code); | 241 Handle<Object> script_data, |
| 242 NativesFlag is_natives_code); |
| 242 | 243 |
| 243 // Compile a String source within a context for Eval. | 244 // Compile a String source within a context for Eval. |
| 244 static Handle<JSFunction> CompileEval(Handle<String> source, | 245 static Handle<SharedFunctionInfo> CompileEval(Handle<String> source, |
| 245 Handle<Context> context, | 246 Handle<Context> context, |
| 246 bool is_global, | 247 bool is_global, |
| 247 ValidationState validation); | 248 ValidationState validation); |
| 248 | 249 |
| 249 // Compile from function info (used for lazy compilation). Returns | 250 // Compile from function info (used for lazy compilation). Returns |
| 250 // true on success and false if the compilation resulted in a stack | 251 // true on success and false if the compilation resulted in a stack |
| 251 // overflow. | 252 // overflow. |
| 252 static bool CompileLazy(CompilationInfo* info); | 253 static bool CompileLazy(CompilationInfo* info); |
| 253 | 254 |
| 254 // Compile a function boilerplate object (the function is possibly | 255 // Compile a shared function info object (the function is possibly |
| 255 // lazily compiled). Called recursively from a backend code | 256 // lazily compiled). Called recursively from a backend code |
| 256 // generator 'caller' to build the boilerplate. | 257 // generator 'caller' to build the shared function info. |
| 257 static Handle<JSFunction> BuildBoilerplate(FunctionLiteral* node, | 258 static Handle<SharedFunctionInfo> BuildFunctionInfo(FunctionLiteral* node, |
| 258 Handle<Script> script, | 259 Handle<Script> script, |
| 259 AstVisitor* caller); | 260 AstVisitor* caller); |
| 260 | 261 |
| 261 // Set the function info for a newly compiled function. | 262 // Set the function info for a newly compiled function. |
| 262 static void SetFunctionInfo(Handle<JSFunction> fun, | 263 static void SetFunctionInfo(Handle<SharedFunctionInfo> function_info, |
| 263 FunctionLiteral* lit, | 264 FunctionLiteral* lit, |
| 264 bool is_toplevel, | 265 bool is_toplevel, |
| 265 Handle<Script> script); | 266 Handle<Script> script); |
| 266 | 267 |
| 267 private: | 268 private: |
| 268 | 269 |
| 269 #if defined ENABLE_LOGGING_AND_PROFILING || defined ENABLE_OPROFILE_AGENT | 270 #if defined ENABLE_LOGGING_AND_PROFILING || defined ENABLE_OPROFILE_AGENT |
| 270 static void LogCodeCreateEvent(Logger::LogEventsAndTags tag, | 271 static void LogCodeCreateEvent(Logger::LogEventsAndTags tag, |
| 271 Handle<String> name, | 272 Handle<String> name, |
| 272 Handle<String> inferred_name, | 273 Handle<String> inferred_name, |
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| 295 FrameElement::ClearConstantList(); | 296 FrameElement::ClearConstantList(); |
| 296 Result::ClearConstantList(); | 297 Result::ClearConstantList(); |
| 297 } | 298 } |
| 298 } | 299 } |
| 299 }; | 300 }; |
| 300 | 301 |
| 301 | 302 |
| 302 } } // namespace v8::internal | 303 } } // namespace v8::internal |
| 303 | 304 |
| 304 #endif // V8_COMPILER_H_ | 305 #endif // V8_COMPILER_H_ |
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