LibJS: Replace the global print() function with console.log() :^)

Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/086f68e8784

Base/home/anon/js/charAt.js

@@ -1,2 +1,2 @@
 var foo = "foobar";
-print(foo.charAt(3));
+console.log(foo.charAt(3));

Base/home/anon/js/hasOwnProperty.js

@@ -1,2 +1,2 @@
 var x = "foobar";
-print(x.hasOwnProperty("length"));
+console.log(x.hasOwnProperty("length"));

Base/home/anon/js/native-function.js

@@ -1 +1 @@
-print("Hello friends!")
+console.log("Hello friends!")

Base/home/anon/js/simple-scopes.js

@@ -8,4 +8,4 @@ function foo() {
     return y;
 }
 
-print(foo());
+console.log(foo());

Base/home/anon/js/strings.js

@@ -1,12 +1,12 @@
 var d = "Double quoted string\n";
-print(d);
+console.log(d);
 var s = 'Single quoted string\n';
-print(s)
+console.log(s)
 var e = "Escaped characters \b \f \n \r \t \v \' \" \\ \n";
-print(e)
+console.log(e)
 var u = "Unterminated string
         this is not possible in js\n";
-print(u);
+console.log(u);
 
 var u2 = 'This is neither\n
-print(u2);
+console.log(u2);

Base/home/anon/js/type-play.js

@@ -1,12 +1,12 @@
 const object = {};
 
-print(true == 1);
-print(null == undefined);
-print("12" == 12);
-print(1 + "12");
-print(12 / "12" == true);
-print(2 * "12");
-print(~"24");
-print(~true);
-print(2*2 + "4");
-print(object == "[object Object]");
+console.log(true == 1);
+console.log(null == undefined);
+console.log("12" == 12);
+console.log(1 + "12");
+console.log(12 / "12" == true);
+console.log(2 * "12");
+console.log(~"24");
+console.log(~true);
+console.log(2*2 + "4");
+console.log(object == "[object Object]");

Libraries/LibJS/Makefile

@@ -6,6 +6,7 @@ OBJS = \
     Lexer.o \
     Parser.o \
     Runtime/Cell.o \
+    Runtime/ConsoleObject.o \
     Runtime/Function.o \
     Runtime/GlobalObject.o \
     Runtime/NativeFunction.o \

Libraries/LibJS/Runtime/ConsoleObject.cpp

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/Function.h>
+#include <LibJS/Runtime/ConsoleObject.h>
+#include <stdio.h>
+
+namespace JS {
+
+ConsoleObject::ConsoleObject()
+{
+    put_native_function("log", [](Object*, Vector<Value> arguments) -> Value {
+        for (auto& argument : arguments)
+            printf("%s ", argument.to_string().characters());
+        return js_undefined();
+    });
+}
+
+ConsoleObject::~ConsoleObject()
+{
+}
+
+}

Libraries/LibJS/Runtime/ConsoleObject.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <LibJS/Runtime/Object.h>
+
+namespace JS {
+
+class ConsoleObject final : public Object {
+public:
+    ConsoleObject();
+    virtual ~ConsoleObject() override;
+
+private:
+    virtual const char* class_name() const override { return "ConsoleObject"; }
+};
+
+}

Libraries/LibJS/Runtime/GlobalObject.cpp

@@ -6,17 +6,12 @@
 #include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/NativeFunction.h>
 #include <LibJS/Runtime/Value.h>
-#include <stdio.h>
 
 namespace JS {
 
 GlobalObject::GlobalObject()
 {
-    put_native_function("print", [](Object*, Vector<Value> arguments) -> Value {
-        for (auto& argument : arguments)
-            printf("%s ", argument.to_string().characters());
-        return js_undefined();
-    });
+    put("console", heap().allocate<ConsoleObject>());
     put_native_function("gc", [](Object* this_object, Vector<Value>) -> Value {
         dbg() << "Forced garbage collection requested!";
         this_object->heap().collect_garbage();