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js: Add a print() function to the environment

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It's really annoying to write `console.log(JSON.stringify(something))`
in scripts, and the output is less than easily readable.
This exposes the existing `print(Value)` function into the JS world, and
allows us to write `print(something)` and get a neat representation in
the console.
This commit is contained in:
Ali Mohammad Pur 2022-02-14 12:04:50 +03:30 • committed by Andreas Kling
parent 3b0943d24c
commit 3b04693d7e
1 changed files with 16 additions and 0 deletions
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16
Userland/Utilities/js.cpp
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@ -94,6 +94,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(save_to_file); JS_DECLARE_NATIVE_FUNCTION(save_to_file);
JS_DECLARE_NATIVE_FUNCTION(load_json); JS_DECLARE_NATIVE_FUNCTION(load_json);
JS_DECLARE_NATIVE_FUNCTION(last_value_getter); JS_DECLARE_NATIVE_FUNCTION(last_value_getter);
JS_DECLARE_NATIVE_FUNCTION(print);
}; };
class ScriptObject final : public JS::GlobalObject { class ScriptObject final : public JS::GlobalObject {
@ -107,6 +108,7 @@ public:
private: private:
JS_DECLARE_NATIVE_FUNCTION(load_file); JS_DECLARE_NATIVE_FUNCTION(load_file);
JS_DECLARE_NATIVE_FUNCTION(load_json); JS_DECLARE_NATIVE_FUNCTION(load_json);
JS_DECLARE_NATIVE_FUNCTION(print);
}; };
static bool s_dump_ast = false; static bool s_dump_ast = false;
@ -1171,6 +1173,7 @@ void ReplObject::initialize_global_object()
define_native_function("load", load_file, 1, attr); define_native_function("load", load_file, 1, attr);
define_native_function("save", save_to_file, 1, attr); define_native_function("save", save_to_file, 1, attr);
define_native_function("loadJSON", load_json, 1, attr); define_native_function("loadJSON", load_json, 1, attr);
define_native_function("print", print, 1, attr);
define_native_accessor( define_native_accessor(
"_", "_",
@ -1230,6 +1233,12 @@ JS_DEFINE_NATIVE_FUNCTION(ReplObject::load_json)
return load_json_impl(vm, global_object); return load_json_impl(vm, global_object);
} }
JS_DEFINE_NATIVE_FUNCTION(ReplObject::print)
{
::print(vm.argument(0));
return JS::js_undefined();
}
void ScriptObject::initialize_global_object() void ScriptObject::initialize_global_object()
{ {
Base::initialize_global_object(); Base::initialize_global_object();
@ -1237,6 +1246,7 @@ void ScriptObject::initialize_global_object()
u8 attr = JS::Attribute::Configurable | JS::Attribute::Writable | JS::Attribute::Enumerable; u8 attr = JS::Attribute::Configurable | JS::Attribute::Writable | JS::Attribute::Enumerable;
define_native_function("load", load_file, 1, attr); define_native_function("load", load_file, 1, attr);
define_native_function("loadJSON", load_json, 1, attr); define_native_function("loadJSON", load_json, 1, attr);
define_native_function("print", print, 1, attr);
} }
JS_DEFINE_NATIVE_FUNCTION(ScriptObject::load_file) JS_DEFINE_NATIVE_FUNCTION(ScriptObject::load_file)
@ -1249,6 +1259,12 @@ JS_DEFINE_NATIVE_FUNCTION(ScriptObject::load_json)
return load_json_impl(vm, global_object); return load_json_impl(vm, global_object);
} }
JS_DEFINE_NATIVE_FUNCTION(ScriptObject::print)
{
::print(vm.argument(0));
return JS::js_undefined();
}
static void repl(JS::Interpreter& interpreter) static void repl(JS::Interpreter& interpreter)
{ {
while (!s_fail_repl) { while (!s_fail_repl) {