-
-
Notifications
You must be signed in to change notification settings - Fork 594
/
sapply.d
180 lines (151 loc) · 4.13 KB
/
sapply.d
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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
/**
* Compiler implementation of the
* $(LINK2 http://www.dlang.org, D programming language).
*
* Copyright: Copyright (C) 1999-2019 by The D Language Foundation, All Rights Reserved
* Authors: $(LINK2 http://www.digitalmars.com, Walter Bright)
* License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
* Source: $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/sparse.d, _sparse.d)
* Documentation: https://dlang.org/phobos/dmd_sapply.html
* Coverage: https://codecov.io/gh/dlang/dmd/src/master/src/dmd/sapply.d
*/
module dmd.sapply;
import dmd.statement;
import dmd.visitor;
/**************************************
* A Statement tree walker that will visit each Statement s in the tree,
* in depth-first evaluation order, and call fp(s,param) on it.
* fp() signals whether the walking continues with its return value:
* Returns:
* 0 continue
* 1 done
* It's a bit slower than using virtual functions, but more encapsulated and less brittle.
* Creating an iterator for this would be much more complex.
*/
extern (C++) final class PostorderStatementVisitor : StoppableVisitor
{
alias visit = typeof(super).visit;
public:
StoppableVisitor v;
extern (D) this(StoppableVisitor v)
{
this.v = v;
}
bool doCond(Statement s)
{
if (!stop && s)
s.accept(this);
return stop;
}
bool applyTo(Statement s)
{
s.accept(v);
stop = v.stop;
return true;
}
override void visit(Statement s)
{
applyTo(s);
}
override void visit(PeelStatement s)
{
doCond(s.s) || applyTo(s);
}
override void visit(CompoundStatement s)
{
for (size_t i = 0; i < s.statements.dim; i++)
if (doCond((*s.statements)[i]))
return;
applyTo(s);
}
override void visit(UnrolledLoopStatement s)
{
for (size_t i = 0; i < s.statements.dim; i++)
if (doCond((*s.statements)[i]))
return;
applyTo(s);
}
override void visit(ScopeStatement s)
{
doCond(s.statement) || applyTo(s);
}
override void visit(WhileStatement s)
{
doCond(s._body) || applyTo(s);
}
override void visit(DoStatement s)
{
doCond(s._body) || applyTo(s);
}
override void visit(ForStatement s)
{
doCond(s._init) || doCond(s._body) || applyTo(s);
}
override void visit(ForeachStatement s)
{
doCond(s._body) || applyTo(s);
}
override void visit(ForeachRangeStatement s)
{
doCond(s._body) || applyTo(s);
}
override void visit(IfStatement s)
{
doCond(s.ifbody) || doCond(s.elsebody) || applyTo(s);
}
override void visit(PragmaStatement s)
{
doCond(s._body) || applyTo(s);
}
override void visit(SwitchStatement s)
{
doCond(s._body) || applyTo(s);
}
override void visit(CaseStatement s)
{
doCond(s.statement) || applyTo(s);
}
override void visit(DefaultStatement s)
{
doCond(s.statement) || applyTo(s);
}
override void visit(SynchronizedStatement s)
{
doCond(s._body) || applyTo(s);
}
override void visit(WithStatement s)
{
doCond(s._body) || applyTo(s);
}
override void visit(TryCatchStatement s)
{
if (doCond(s._body))
return;
for (size_t i = 0; i < s.catches.dim; i++)
if (doCond((*s.catches)[i].handler))
return;
applyTo(s);
}
override void visit(TryFinallyStatement s)
{
doCond(s._body) || doCond(s.finalbody) || applyTo(s);
}
override void visit(ScopeGuardStatement s)
{
doCond(s.statement) || applyTo(s);
}
override void visit(DebugStatement s)
{
doCond(s.statement) || applyTo(s);
}
override void visit(LabelStatement s)
{
doCond(s.statement) || applyTo(s);
}
}
bool walkPostorder(Statement s, StoppableVisitor v)
{
scope PostorderStatementVisitor pv = new PostorderStatementVisitor(v);
s.accept(pv);
return v.stop;
}