mildew.stdlib.console source code

1 /**
2 This module implements functions for the "console" namespace in the scripting language.
3 
4 ────────────────────────────────────────────────────────────────────────────────
5 
6 Copyright (C) 2021 pillager86.rf.gd
7 
8 This program is free software: you can redistribute it and/or modify it under 
9 the terms of the GNU General Public License as published by the Free Software 
10 Foundation, either version 3 of the License, or (at your option) any later 
11 version.
12 
13 This program is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
15 PARTICULAR PURPOSE.  See the GNU General Public License for more details.
16 
17 You should have received a copy of the GNU General Public License along with 
18 this program.  If not, see <https://www.gnu.org/licenses/>.
19 */
20 module mildew.stdlib.console;
21 
22 import mildew.environment;
23 import mildew.interpreter;
24 import mildew.types;
25 
26 /** 
27  * Initializes the console library. This is called by Interpreter.initializeStdlib. The console
28  * functions are stored in the "console" global variable and are accessed such as "console.log".
29  * Documentation for these functions can be found at https://pillager86.github.io/dmildew/
30  * Params:
31  *  interpreter = The Interpreter object for which to load the namespace and functions.
32  */
33 public void initializeConsoleLibrary(Interpreter interpreter)
34 {
35     auto consoleNamespace = new ScriptObject("Console", null);
36     consoleNamespace["log"] = ScriptAny(new ScriptFunction("console.log", &native_console_log));
37     consoleNamespace["put"] = ScriptAny(new ScriptFunction("console.put", &native_console_put));
38     consoleNamespace["error"] = ScriptAny(new ScriptFunction("console.error", &native_console_error));
39     interpreter.forceSetGlobal("console", consoleNamespace, true);
40 }
41 
42 private ScriptAny native_console_log(Environment environment,
43         ScriptAny* thisObj,
44         ScriptAny[] args,
45         ref NativeFunctionError nfe)
46 {
47     import std.stdio: write, writeln;
48     if(args.length > 0)
49         write(args[0].toString());
50     if(args.length > 1)
51         foreach(arg ; args[1..$])
52             write(" " ~ arg.toString);
53     writeln();
54     return ScriptAny.UNDEFINED;
55 }
56 
57 private ScriptAny native_console_put(Environment environment,
58         ScriptAny* thisObj,
59         ScriptAny[] args,
60         ref NativeFunctionError nfe)
61 {
62 import std.stdio: write, writeln;
63     if(args.length > 0)
64         write(args[0].toString());
65     if(args.length > 1)
66         foreach(arg ; args[1..$])
67             write(" " ~ arg.toString);
68     return ScriptAny.UNDEFINED;
69 }
70 
71 private ScriptAny native_console_error(Environment environment,
72         ScriptAny* thisObj,
73         ScriptAny[] args,
74         ref NativeFunctionError nfe)
75 {
76     import std.stdio: stderr;
77     foreach(arg ; args)
78         stderr.write(arg.toString ~ " ");
79     stderr.writeln();
80     return ScriptAny.UNDEFINED;
81 }