1 // Copyright 2016 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/source-position.h"
6 #include "src/objects-inl.h"
7 #include "src/optimized-compilation-info.h"
8
9 namespace v8 {
10 namespace internal {
11
operator <<(std::ostream & out,const SourcePositionInfo & pos)12 std::ostream& operator<<(std::ostream& out, const SourcePositionInfo& pos) {
13 out << "<";
14 if (!pos.script.is_null() && pos.script->name()->IsString()) {
15 out << String::cast(pos.script->name())->ToCString(DISALLOW_NULLS).get();
16 } else {
17 out << "unknown";
18 }
19 out << ":" << pos.line + 1 << ":" << pos.column + 1 << ">";
20 return out;
21 }
22
operator <<(std::ostream & out,const std::vector<SourcePositionInfo> & stack)23 std::ostream& operator<<(std::ostream& out,
24 const std::vector<SourcePositionInfo>& stack) {
25 bool first = true;
26 for (const SourcePositionInfo& pos : stack) {
27 if (!first) out << " inlined at ";
28 out << pos;
29 first = false;
30 }
31 return out;
32 }
33
operator <<(std::ostream & out,const SourcePosition & pos)34 std::ostream& operator<<(std::ostream& out, const SourcePosition& pos) {
35 if (pos.isInlined()) {
36 out << "<inlined(" << pos.InliningId() << "):";
37 } else {
38 out << "<not inlined:";
39 }
40 out << pos.ScriptOffset() << ">";
41 return out;
42 }
43
InliningStack(OptimizedCompilationInfo * cinfo) const44 std::vector<SourcePositionInfo> SourcePosition::InliningStack(
45 OptimizedCompilationInfo* cinfo) const {
46 SourcePosition pos = *this;
47 std::vector<SourcePositionInfo> stack;
48 while (pos.isInlined()) {
49 const auto& inl = cinfo->inlined_functions()[pos.InliningId()];
50 stack.push_back(SourcePositionInfo(pos, inl.shared_info));
51 pos = inl.position.position;
52 }
53 stack.push_back(SourcePositionInfo(pos, cinfo->shared_info()));
54 return stack;
55 }
56
InliningStack(Handle<Code> code) const57 std::vector<SourcePositionInfo> SourcePosition::InliningStack(
58 Handle<Code> code) const {
59 Isolate* isolate = code->GetIsolate();
60 Handle<DeoptimizationData> deopt_data(
61 DeoptimizationData::cast(code->deoptimization_data()), isolate);
62 SourcePosition pos = *this;
63 std::vector<SourcePositionInfo> stack;
64 while (pos.isInlined()) {
65 InliningPosition inl =
66 deopt_data->InliningPositions()->get(pos.InliningId());
67 Handle<SharedFunctionInfo> function(
68 deopt_data->GetInlinedFunction(inl.inlined_function_id), isolate);
69 stack.push_back(SourcePositionInfo(pos, function));
70 pos = inl.position;
71 }
72 Handle<SharedFunctionInfo> function(
73 SharedFunctionInfo::cast(deopt_data->SharedFunctionInfo()), isolate);
74 stack.push_back(SourcePositionInfo(pos, function));
75 return stack;
76 }
77
Print(std::ostream & out,SharedFunctionInfo * function) const78 void SourcePosition::Print(std::ostream& out,
79 SharedFunctionInfo* function) const {
80 Script::PositionInfo pos;
81 Object* source_name = nullptr;
82 if (function->script()->IsScript()) {
83 Script* script = Script::cast(function->script());
84 source_name = script->name();
85 script->GetPositionInfo(ScriptOffset(), &pos, Script::WITH_OFFSET);
86 }
87 out << "<";
88 if (source_name != nullptr && source_name->IsString()) {
89 out << String::cast(source_name)
90 ->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL)
91 .get();
92 } else {
93 out << "unknown";
94 }
95 out << ":" << pos.line + 1 << ":" << pos.column + 1 << ">";
96 }
97
PrintJson(std::ostream & out) const98 void SourcePosition::PrintJson(std::ostream& out) const {
99 out << "{ \"scriptOffset\" : " << ScriptOffset() << ", "
100 << " \"inliningId\" : " << InliningId() << "}";
101 }
102
Print(std::ostream & out,Code * code) const103 void SourcePosition::Print(std::ostream& out, Code* code) const {
104 DeoptimizationData* deopt_data =
105 DeoptimizationData::cast(code->deoptimization_data());
106 if (!isInlined()) {
107 SharedFunctionInfo* function(
108 SharedFunctionInfo::cast(deopt_data->SharedFunctionInfo()));
109 Print(out, function);
110 } else {
111 InliningPosition inl = deopt_data->InliningPositions()->get(InliningId());
112 if (inl.inlined_function_id == -1) {
113 out << *this;
114 } else {
115 SharedFunctionInfo* function =
116 deopt_data->GetInlinedFunction(inl.inlined_function_id);
117 Print(out, function);
118 }
119 out << " inlined at ";
120 inl.position.Print(out, code);
121 }
122 }
123
SourcePositionInfo(SourcePosition pos,Handle<SharedFunctionInfo> f)124 SourcePositionInfo::SourcePositionInfo(SourcePosition pos,
125 Handle<SharedFunctionInfo> f)
126 : position(pos),
127 script(f.is_null() || !f->script()->IsScript()
128 ? Handle<Script>::null()
129 : handle(Script::cast(f->script()), f->GetIsolate())) {
130 if (!script.is_null()) {
131 Script::PositionInfo info;
132 if (Script::GetPositionInfo(script, pos.ScriptOffset(), &info,
133 Script::WITH_OFFSET)) {
134 line = info.line;
135 column = info.column;
136 }
137 }
138 }
139
140 } // namespace internal
141 } // namespace v8
142