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source-position.cc
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169 lines (154 loc) · 5.61 KB
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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/codegen/source-position.h"
#include "src/codegen/optimized-compilation-info.h"
#include "src/common/assert-scope.h"
#include "src/objects/objects-inl.h"
namespace v8 {
namespace internal {
std::ostream& operator<<(std::ostream& out, const SourcePositionInfo& pos) {
out << "<";
if (!pos.script.is_null() && IsString(pos.script->name())) {
out << Cast<String>(pos.script->name())->ToCString().get();
} else {
out << "unknown";
}
out << ":" << pos.line + 1 << ":" << pos.column + 1 << ">";
return out;
}
std::ostream& operator<<(std::ostream& out,
const std::vector<SourcePositionInfo>& stack) {
bool first = true;
for (const SourcePositionInfo& pos : stack) {
if (!first) out << " inlined at ";
out << pos;
first = false;
}
return out;
}
std::ostream& operator<<(std::ostream& out, const SourcePosition& pos) {
if (pos.isInlined()) {
out << "<inlined(" << pos.InliningId() << "):";
} else {
out << "<not inlined:";
}
if (pos.IsExternal()) {
out << pos.ExternalLine() << ", " << pos.ExternalFileId() << ">";
} else {
out << pos.ScriptOffset() << ">";
}
return out;
}
std::vector<SourcePositionInfo> SourcePosition::InliningStack(
Isolate* isolate, OptimizedCompilationInfo* cinfo) const {
SourcePosition pos = *this;
std::vector<SourcePositionInfo> stack;
while (pos.isInlined()) {
const auto& inl = cinfo->inlined_functions()[pos.InliningId()];
stack.push_back(SourcePositionInfo(isolate, pos, inl.shared_info));
pos = inl.position.position;
}
stack.push_back(SourcePositionInfo(isolate, pos, cinfo->shared_info()));
return stack;
}
std::vector<SourcePositionInfo> SourcePosition::InliningStack(
Isolate* isolate, Tagged<Code> code) const {
Tagged<DeoptimizationData> deopt_data =
Cast<DeoptimizationData>(code->deoptimization_data());
SourcePosition pos = *this;
std::vector<SourcePositionInfo> stack;
while (pos.isInlined()) {
InliningPosition inl =
deopt_data->InliningPositions()->get(pos.InliningId());
DirectHandle<SharedFunctionInfo> function(
deopt_data->GetInlinedFunction(inl.inlined_function_id), isolate);
stack.push_back(SourcePositionInfo(isolate, pos, function));
pos = inl.position;
}
DirectHandle<SharedFunctionInfo> function(deopt_data->GetSharedFunctionInfo(),
isolate);
stack.push_back(SourcePositionInfo(isolate, pos, function));
return stack;
}
SourcePositionInfo SourcePosition::FirstInfo(Isolate* isolate,
Tagged<Code> code) const {
DisallowGarbageCollection no_gc;
Tagged<DeoptimizationData> deopt_data =
Cast<DeoptimizationData>(code->deoptimization_data());
SourcePosition pos = *this;
if (pos.isInlined()) {
InliningPosition inl =
deopt_data->InliningPositions()->get(pos.InliningId());
DirectHandle<SharedFunctionInfo> function(
deopt_data->GetInlinedFunction(inl.inlined_function_id), isolate);
return SourcePositionInfo(isolate, pos, function);
}
DirectHandle<SharedFunctionInfo> function(deopt_data->GetSharedFunctionInfo(),
isolate);
return SourcePositionInfo(isolate, pos, function);
}
void SourcePosition::Print(std::ostream& out,
Tagged<SharedFunctionInfo> function) const {
Script::PositionInfo pos;
Tagged<Object> source_name;
if (IsScript(function->script())) {
Tagged<Script> script = Cast<Script>(function->script());
source_name = script->name();
script->GetPositionInfo(ScriptOffset(), &pos);
}
out << "<";
if (IsString(source_name)) {
out << Cast<String>(source_name)->ToCString().get();
} else {
out << "unknown";
}
out << ":" << pos.line + 1 << ":" << pos.column + 1 << ">";
}
void SourcePosition::PrintJson(std::ostream& out) const {
if (IsExternal()) {
out << "{ \"line\" : " << ExternalLine() << ", "
<< " \"fileId\" : " << ExternalFileId() << ", "
<< " \"inliningId\" : " << InliningId() << "}";
} else {
out << "{ \"scriptOffset\" : " << ScriptOffset() << ", "
<< " \"inliningId\" : " << InliningId() << "}";
}
}
void SourcePosition::Print(std::ostream& out, Tagged<Code> code) const {
Tagged<DeoptimizationData> deopt_data =
Cast<DeoptimizationData>(code->deoptimization_data());
if (!isInlined()) {
Tagged<SharedFunctionInfo> function(deopt_data->GetSharedFunctionInfo());
Print(out, function);
} else {
InliningPosition inl = deopt_data->InliningPositions()->get(InliningId());
if (inl.inlined_function_id == -1) {
out << *this;
} else {
Tagged<SharedFunctionInfo> function =
deopt_data->GetInlinedFunction(inl.inlined_function_id);
Print(out, function);
}
out << " inlined at ";
inl.position.Print(out, code);
}
}
SourcePositionInfo::SourcePositionInfo(Isolate* isolate, SourcePosition pos,
DirectHandle<SharedFunctionInfo> sfi)
: position(pos), shared(indirect_handle(sfi, isolate)) {
{
DisallowGarbageCollection no_gc;
if (sfi.is_null()) return;
Tagged<Object> maybe_script = sfi->script();
if (!IsScript(maybe_script)) return;
script = handle(Cast<Script>(maybe_script), isolate);
}
Script::PositionInfo info;
if (Script::GetPositionInfo(script, pos.ScriptOffset(), &info)) {
line = info.line;
column = info.column;
}
}
} // namespace internal
} // namespace v8