1 // Copyright 2018 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "src/codegen/unoptimized-compilation-info.h"
6 
7 #include "src/ast/ast.h"
8 #include "src/ast/scopes.h"
9 #include "src/codegen/source-position.h"
10 #include "src/debug/debug.h"
11 #include "src/execution/isolate.h"
12 #include "src/objects/objects-inl.h"
13 #include "src/parsing/parse-info.h"
14 
15 namespace v8 {
16 namespace internal {
17 
UnoptimizedCompilationInfo(Zone * zone,ParseInfo * parse_info,FunctionLiteral * literal)18 UnoptimizedCompilationInfo::UnoptimizedCompilationInfo(Zone* zone,
19                                                        ParseInfo* parse_info,
20                                                        FunctionLiteral* literal)
21     : flags_(parse_info->flags()), feedback_vector_spec_(zone) {
22   // NOTE: The parse_info passed here represents the global information gathered
23   // during parsing, but does not represent specific details of the actual
24   // function literal being compiled for this OptimizedCompilationInfo. As such,
25   // parse_info->literal() might be different from literal, and only global
26   // details of the script being parsed are relevant to this
27   // OptimizedCompilationInfo.
28   DCHECK_NOT_NULL(literal);
29   literal_ = literal;
30   source_range_map_ = parse_info->source_range_map();
31 }
32 
scope() const33 DeclarationScope* UnoptimizedCompilationInfo::scope() const {
34   DCHECK_NOT_NULL(literal_);
35   return literal_->scope();
36 }
37 
num_parameters() const38 int UnoptimizedCompilationInfo::num_parameters() const {
39   return scope()->num_parameters();
40 }
41 
num_parameters_including_this() const42 int UnoptimizedCompilationInfo::num_parameters_including_this() const {
43   return scope()->num_parameters() + 1;
44 }
45 
46 SourcePositionTableBuilder::RecordingMode
SourcePositionRecordingMode() const47 UnoptimizedCompilationInfo::SourcePositionRecordingMode() const {
48   if (flags().collect_source_positions()) {
49     return SourcePositionTableBuilder::RECORD_SOURCE_POSITIONS;
50   }
51 
52   // Always collect source positions for functions that cannot be lazily
53   // compiled, e.g. class member initializer functions.
54   return !literal_->AllowsLazyCompilation()
55              ? SourcePositionTableBuilder::RECORD_SOURCE_POSITIONS
56              : SourcePositionTableBuilder::LAZY_SOURCE_POSITIONS;
57 }
58 
59 }  // namespace internal
60 }  // namespace v8
61