mildew.stdlib.console source code

1 /**
2  * This module implements functions for the "console" namespace in the scripting language
3  */
4 module mildew.stdlib.console;
5 
6 import mildew.context;
7 import mildew.interpreter;
8 import mildew.types;
9 
10 /** 
11  * Initializes the console library. This is called by Interpreter.initializeStdlib. The console
12  * functions are stored in the "console" global variable and are accessed such as "console.log"
13  */
14 public void initializeConsoleLibrary(Interpreter interpreter)
15 {
16     auto consoleNamespace = new ScriptObject("Console", null);
17     consoleNamespace["log"] = ScriptAny(new ScriptFunction("console.log", &native_console_log));
18     consoleNamespace["put"] = ScriptAny(new ScriptFunction("console.put", &native_console_put));
19     consoleNamespace["error"] = ScriptAny(new ScriptFunction("console.error", &native_console_error));
20     interpreter.forceSetGlobal("console", consoleNamespace, true);
21 }
22 
23 private ScriptAny native_console_log(Context context,
24         ScriptAny* thisObj,
25         ScriptAny[] args,
26         ref NativeFunctionError nfe)
27 {
28     import std.stdio: write, writeln;
29     if(args.length > 0)
30         write(args[0].toString());
31     if(args.length > 1)
32         foreach(arg ; args[1..$])
33             write(" " ~ arg.toString);
34     writeln();
35     return ScriptAny.UNDEFINED;
36 }
37 
38 private ScriptAny native_console_put(Context context,
39         ScriptAny* thisObj,
40         ScriptAny[] args,
41         ref NativeFunctionError nfe)
42 {
43 import std.stdio: write, writeln;
44     if(args.length > 0)
45         write(args[0].toString());
46     if(args.length > 1)
47         foreach(arg ; args[1..$])
48             write(" " ~ arg.toString);
49     return ScriptAny.UNDEFINED;
50 }
51 
52 private ScriptAny native_console_error(Context context,
53         ScriptAny* thisObj,
54         ScriptAny[] args,
55         ref NativeFunctionError nfe)
56 {
57     import std.stdio: stderr;
58     foreach(arg ; args)
59         stderr.write(arg.toString ~ " ");
60     stderr.writeln();
61     return ScriptAny.UNDEFINED;
62 }