Add a print function in the global JS scope for debugging.
BUG=
R=robertphillips@google.com
Author: jcgregorio@google.com
Review URL: https://codereview.chromium.org/100583005
git-svn-id: http://skia.googlecode.com/svn/trunk@12695 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/SkV8Example/SkV8Example.cpp b/experimental/SkV8Example/SkV8Example.cpp
index 106bef9..a62b919 100644
--- a/experimental/SkV8Example/SkV8Example.cpp
+++ b/experimental/SkV8Example/SkV8Example.cpp
@@ -292,6 +292,27 @@
}
#endif
+
+// The callback that is invoked by v8 whenever the JavaScript 'print'
+// function is called. Prints its arguments on stdout separated by
+// spaces and ending with a newline.
+void Print(const v8::FunctionCallbackInfo<v8::Value>& args) {
+ bool first = true;
+ HandleScope handle_scope(args.GetIsolate());
+ for (int i = 0; i < args.Length(); i++) {
+ if (first) {
+ first = false;
+ } else {
+ printf(" ");
+ }
+ v8::String::Utf8Value str(args[i]);
+ printf("%s", ToCString(str));
+ }
+ printf("\n");
+ fflush(stdout);
+}
+
+
// Creates a new execution environment containing the built-in
// function draw().
Handle<Context> createRootContext(Isolate* isolate) {
@@ -301,6 +322,9 @@
// This is where we would inject any globals into the root Context
// using global->Set(...)
+ global->Set(v8::String::NewFromUtf8(isolate, "print"),
+ v8::FunctionTemplate::New(Print));
+
return Context::New(isolate, NULL, global);
}