1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/* valaunaryexpression.vala
*
* Copyright (C) 2006 Jürg Billeter
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Jürg Billeter <j@bitron.ch>
*/
using GLib;
/**
* Represents an expression with one operand in the source code.
*
* Supports +, -, !, ~, ref, out.
*/
public class Vala.UnaryExpression : Expression {
/**
* The unary operator.
*/
public UnaryOperator operator { get; set; }
/**
* The operand.
*/
public Expression! inner {
get {
return _inner;
}
set construct {
_inner = value;
_inner.parent_node = this;
}
}
private Expression! _inner;
/**
* Creates a new unary expression.
*
* @param op unary operator
* @param inner operand
* @param source reference to source code
* @return newly created binary expression
*/
public UnaryExpression (UnaryOperator op, Expression! _inner, SourceReference source) {
operator = op;
inner = _inner;
source_reference = source;
}
public override void accept (CodeVisitor! visitor) {
inner.accept (visitor);
visitor.visit_unary_expression (this);
}
public override void replace (CodeNode! old_node, CodeNode! new_node) {
if (inner == old_node) {
inner = (Expression) new_node;
}
}
public string! operator_string {
get {
switch (_operator) {
case UnaryOperator.PLUS: return "+";
case UnaryOperator.MINUS: return "-";
case UnaryOperator.LOGICAL_NEGATION: return "!";
case UnaryOperator.BITWISE_COMPLEMENT: return "~";
case UnaryOperator.INCREMENT: return "++";
case UnaryOperator.DECREMENT: return "--";
case UnaryOperator.REF: return "ref ";
case UnaryOperator.OUT: return "out ";
}
assert_not_reached ();
}
}
public override string! to_string () {
return operator_string + _inner.to_string ();
}
}
public enum Vala.UnaryOperator {
PLUS,
MINUS,
LOGICAL_NEGATION,
BITWISE_COMPLEMENT,
INCREMENT,
DECREMENT,
REF,
OUT
}
|
