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Unified Diff: src/d8-console.cc

Issue 2840543002: [d8] implement console for d8. (Closed)
Patch Set: no stress Created 3 years, 8 months ago
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Index: src/d8-console.cc
diff --git a/src/d8-console.cc b/src/d8-console.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9e0d244e780cc09a5dc23d611f7731702e62a543
--- /dev/null
+++ b/src/d8-console.cc
@@ -0,0 +1,111 @@
+// Copyright 2017 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/d8-console.h"
+#include "src/d8.h"
+
+namespace v8 {
+
+namespace {
+void WriteToFile(FILE* file, Isolate* isolate,
+ const debug::ConsoleCallArguments& args) {
+ for (int i = 0; i < args.Length(); i++) {
+ HandleScope handle_scope(isolate);
+ if (i != 0) fprintf(file, " ");
+
+ // Explicitly catch potential exceptions in toString().
+ v8::TryCatch try_catch(isolate);
+ Local<Value> arg = args[i];
+ Local<String> str_obj;
+
+ if (arg->IsSymbol()) arg = Local<Symbol>::Cast(arg)->Name();
+ if (!arg->ToString(isolate->GetCurrentContext()).ToLocal(&str_obj)) {
+ try_catch.ReThrow();
+ return;
+ }
+
+ v8::String::Utf8Value str(str_obj);
+ int n = static_cast<int>(fwrite(*str, sizeof(**str), str.length(), file));
+ if (n != str.length()) {
+ printf("Error in fwrite\n");
+ Shell::Exit(1);
+ }
+ }
+ fprintf(file, "\n");
+}
+} // anonymous namespace
+
+D8Console::D8Console(Isolate* isolate) : isolate_(isolate) {
+ default_timer_ = base::TimeTicks::HighResolutionNow();
+}
+
+void D8Console::Log(const debug::ConsoleCallArguments& args) {
+ WriteToFile(stdout, isolate_, args);
+}
+
+void D8Console::Error(const debug::ConsoleCallArguments& args) {
+ WriteToFile(stderr, isolate_, args);
+}
+
+void D8Console::Warn(const debug::ConsoleCallArguments& args) {
+ WriteToFile(stdout, isolate_, args);
+}
+
+void D8Console::Info(const debug::ConsoleCallArguments& args) {
+ WriteToFile(stdout, isolate_, args);
+}
+
+void D8Console::Debug(const debug::ConsoleCallArguments& args) {
+ WriteToFile(stdout, isolate_, args);
+}
+
+void D8Console::Time(const debug::ConsoleCallArguments& args) {
+ if (args.Length() == 0) {
+ default_timer_ = base::TimeTicks::HighResolutionNow();
+ } else {
+ Local<Value> arg = args[0];
+ Local<String> label;
+ v8::TryCatch try_catch(isolate_);
+ if (!arg->ToString(isolate_->GetCurrentContext()).ToLocal(&label)) {
+ try_catch.ReThrow();
+ return;
+ }
+ v8::String::Utf8Value utf8(label);
+ std::string string(*utf8);
+ auto find = timers_.find(string);
+ if (find != timers_.end()) {
+ find->second = base::TimeTicks::HighResolutionNow();
+ } else {
+ timers_.insert(std::pair<std::string, base::TimeTicks>(
+ string, base::TimeTicks::HighResolutionNow()));
+ }
+ }
+}
+
+void D8Console::TimeEnd(const debug::ConsoleCallArguments& args) {
+ base::TimeDelta delta;
+ base::TimeTicks now = base::TimeTicks::HighResolutionNow();
+ if (args.Length() == 0) {
+ delta = base::TimeTicks::HighResolutionNow() - default_timer_;
+ printf("default: ");
+ } else {
+ Local<Value> arg = args[0];
+ Local<String> label;
+ v8::TryCatch try_catch(isolate_);
+ if (!arg->ToString(isolate_->GetCurrentContext()).ToLocal(&label)) {
+ try_catch.ReThrow();
+ return;
+ }
+ v8::String::Utf8Value utf8(label);
+ std::string string(*utf8);
+ auto find = timers_.find(string);
+ if (find != timers_.end()) {
+ delta = now - find->second;
+ }
+ printf("%s: ", *utf8);
+ }
+ printf("%f\n", delta.InMillisecondsF());
+}
+
+} // namespace v8
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