dscanner.analysis.del source code

1 //          Copyright Brian Schott (Hackerpilot) 2014.
2 // Distributed under the Boost Software License, Version 1.0.
3 //    (See accompanying file LICENSE_1_0.txt or copy at
4 //          http://www.boost.org/LICENSE_1_0.txt)
5 
6 module dscanner.analysis.del;
7 
8 import std.stdio;
9 import dparse.ast;
10 import dparse.lexer;
11 import dscanner.analysis.base;
12 import dsymbol.scope_;
13 
14 /**
15  * Checks for use of the deprecated 'delete' keyword
16  */
17 final class DeleteCheck : BaseAnalyzer
18 {
19 	alias visit = BaseAnalyzer.visit;
20 
21 	mixin AnalyzerInfo!"delete_check";
22 
23 	this(string fileName, const(Scope)* sc, bool skipTests = false)
24 	{
25 		super(fileName, sc, skipTests);
26 	}
27 
28 	override void visit(const DeleteExpression d)
29 	{
30 		addErrorMessage(d.line, d.column, "dscanner.deprecated.delete_keyword",
31 				"Avoid using the 'delete' keyword.");
32 		d.accept(this);
33 	}
34 }
35 
36 unittest
37 {
38 	import dscanner.analysis.config : StaticAnalysisConfig, Check, disabledConfig;
39 	import dscanner.analysis.helpers : assertAnalyzerWarnings;
40 
41 	StaticAnalysisConfig sac = disabledConfig();
42 	sac.delete_check = Check.enabled;
43 	assertAnalyzerWarnings(q{
44 		void testDelete()
45 		{
46 			int[int] data = [1 : 2];
47 			delete data[1]; // [warn]: Avoid using the 'delete' keyword.
48 
49 			auto a = new Class();
50 			delete a; // [warn]: Avoid using the 'delete' keyword.
51 		}
52 	}}, sac);
53 
54 	stderr.writeln("Unittest for DeleteCheck passed.");
55 }