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Issue 345513003: Revert "Parser: Delay internalizing strings and values." (r21841) (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 6 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #include "src/rewriter.h" 7 #include "src/rewriter.h"
8 8
9 #include "src/ast.h" 9 #include "src/ast.h"
10 #include "src/compiler.h" 10 #include "src/compiler.h"
11 #include "src/scopes.h" 11 #include "src/scopes.h"
12 12
13 namespace v8 { 13 namespace v8 {
14 namespace internal { 14 namespace internal {
15 15
16 class Processor: public AstVisitor { 16 class Processor: public AstVisitor {
17 public: 17 public:
18 Processor(Variable* result, Zone* zone) 18 Processor(Variable* result, Zone* zone)
19 : result_(result), 19 : result_(result),
20 result_assigned_(false), 20 result_assigned_(false),
21 is_set_(false), 21 is_set_(false),
22 in_try_(false), 22 in_try_(false),
23 // Passing a null AstValueFactory is fine, because Processor doesn't 23 factory_(zone) {
24 // need to create strings or literals.
25 factory_(zone, NULL) {
26 InitializeAstVisitor(zone); 24 InitializeAstVisitor(zone);
27 } 25 }
28 26
29 virtual ~Processor() { } 27 virtual ~Processor() { }
30 28
31 void Process(ZoneList<Statement*>* statements); 29 void Process(ZoneList<Statement*>* statements);
32 bool result_assigned() const { return result_assigned_; } 30 bool result_assigned() const { return result_assigned_; }
33 31
34 AstNodeFactory<AstNullVisitor>* factory() { 32 AstNodeFactory<AstNullVisitor>* factory() {
35 return &factory_; 33 return &factory_;
(...skipping 193 matching lines...) Expand 10 before | Expand all | Expand 10 after
229 // continue to be used in the case of failure. 227 // continue to be used in the case of failure.
230 bool Rewriter::Rewrite(CompilationInfo* info) { 228 bool Rewriter::Rewrite(CompilationInfo* info) {
231 FunctionLiteral* function = info->function(); 229 FunctionLiteral* function = info->function();
232 ASSERT(function != NULL); 230 ASSERT(function != NULL);
233 Scope* scope = function->scope(); 231 Scope* scope = function->scope();
234 ASSERT(scope != NULL); 232 ASSERT(scope != NULL);
235 if (!scope->is_global_scope() && !scope->is_eval_scope()) return true; 233 if (!scope->is_global_scope() && !scope->is_eval_scope()) return true;
236 234
237 ZoneList<Statement*>* body = function->body(); 235 ZoneList<Statement*>* body = function->body();
238 if (!body->is_empty()) { 236 if (!body->is_empty()) {
239 Variable* result = 237 Variable* result = scope->NewTemporary(
240 scope->NewTemporary(info->ast_value_factory()->dot_result_string()); 238 info->isolate()->factory()->dot_result_string());
241 // The name string must be internalized at this point.
242 ASSERT(!result->name().is_null());
243 Processor processor(result, info->zone()); 239 Processor processor(result, info->zone());
244 processor.Process(body); 240 processor.Process(body);
245 if (processor.HasStackOverflow()) return false; 241 if (processor.HasStackOverflow()) return false;
246 242
247 if (processor.result_assigned()) { 243 if (processor.result_assigned()) {
248 ASSERT(function->end_position() != RelocInfo::kNoPosition); 244 ASSERT(function->end_position() != RelocInfo::kNoPosition);
249 // Set the position of the assignment statement one character past the 245 // Set the position of the assignment statement one character past the
250 // source code, such that it definitely is not in the source code range 246 // source code, such that it definitely is not in the source code range
251 // of an immediate inner scope. For example in 247 // of an immediate inner scope. For example in
252 // eval('with ({x:1}) x = 1'); 248 // eval('with ({x:1}) x = 1');
253 // the end position of the function generated for executing the eval code 249 // the end position of the function generated for executing the eval code
254 // coincides with the end of the with scope which is the position of '1'. 250 // coincides with the end of the with scope which is the position of '1'.
255 int pos = function->end_position(); 251 int pos = function->end_position();
256 VariableProxy* result_proxy = processor.factory()->NewVariableProxy( 252 VariableProxy* result_proxy = processor.factory()->NewVariableProxy(
257 result->raw_name(), false, result->interface(), pos); 253 result->name(), false, result->interface(), pos);
258 result_proxy->BindTo(result); 254 result_proxy->BindTo(result);
259 Statement* result_statement = 255 Statement* result_statement =
260 processor.factory()->NewReturnStatement(result_proxy, pos); 256 processor.factory()->NewReturnStatement(result_proxy, pos);
261 body->Add(result_statement, info->zone()); 257 body->Add(result_statement, info->zone());
262 } 258 }
263 } 259 }
264 260
265 return true; 261 return true;
266 } 262 }
267 263
268 264
269 } } // namespace v8::internal 265 } } // namespace v8::internal
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