-
-
Notifications
You must be signed in to change notification settings - Fork 606
/
apply.d
155 lines (132 loc) · 3.99 KB
/
apply.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
/**
* Compiler implementation of the
* $(LINK2 http://www.dlang.org, D programming language).
*
* Copyright: Copyright (C) 1999-2020 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/apply.d, _apply.d)
* Documentation: https://dlang.org/phobos/dmd_apply.html
* Coverage: https://codecov.io/gh/dlang/dmd/src/master/src/dmd/apply.d
*/
module dmd.apply;
import dmd.arraytypes;
import dmd.dtemplate;
import dmd.expression;
import dmd.visitor;
/**************************************
* An Expression tree walker that will visit each Expression e in the tree,
* in depth-first evaluation order, and call fp(e,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.
*/
private extern (C++) final class PostorderExpressionVisitor : StoppableVisitor
{
alias visit = typeof(super).visit;
public:
StoppableVisitor v;
extern (D) this(StoppableVisitor v)
{
this.v = v;
}
bool doCond(Expression e)
{
if (!stop && e)
e.accept(this);
return stop;
}
bool doCond(Expressions* e)
{
if (!e)
return false;
for (size_t i = 0; i < e.dim && !stop; i++)
doCond((*e)[i]);
return stop;
}
bool applyTo(Expression e)
{
e.accept(v);
stop = v.stop;
return true;
}
override void visit(Expression e)
{
applyTo(e);
}
override void visit(NewExp e)
{
//printf("NewExp::apply(): %s\n", toChars());
doCond(e.thisexp) || doCond(e.newargs) || doCond(e.arguments) || applyTo(e);
}
override void visit(NewAnonClassExp e)
{
//printf("NewAnonClassExp::apply(): %s\n", toChars());
doCond(e.thisexp) || doCond(e.newargs) || doCond(e.arguments) || applyTo(e);
}
override void visit(TypeidExp e)
{
doCond(isExpression(e.obj)) || applyTo(e);
}
override void visit(UnaExp e)
{
doCond(e.e1) || applyTo(e);
}
override void visit(BinExp e)
{
doCond(e.e1) || doCond(e.e2) || applyTo(e);
}
override void visit(AssertExp e)
{
//printf("CallExp::apply(apply_fp_t fp, void *param): %s\n", toChars());
doCond(e.e1) || doCond(e.msg) || applyTo(e);
}
override void visit(CallExp e)
{
//printf("CallExp::apply(apply_fp_t fp, void *param): %s\n", toChars());
doCond(e.e1) || doCond(e.arguments) || applyTo(e);
}
override void visit(ArrayExp e)
{
//printf("ArrayExp::apply(apply_fp_t fp, void *param): %s\n", toChars());
doCond(e.e1) || doCond(e.arguments) || applyTo(e);
}
override void visit(SliceExp e)
{
doCond(e.e1) || doCond(e.lwr) || doCond(e.upr) || applyTo(e);
}
override void visit(ArrayLiteralExp e)
{
doCond(e.basis) || doCond(e.elements) || applyTo(e);
}
override void visit(AssocArrayLiteralExp e)
{
doCond(e.keys) || doCond(e.values) || applyTo(e);
}
override void visit(StructLiteralExp e)
{
if (e.stageflags & stageApply)
return;
int old = e.stageflags;
e.stageflags |= stageApply;
doCond(e.elements) || applyTo(e);
e.stageflags = old;
}
override void visit(TupleExp e)
{
doCond(e.e0) || doCond(e.exps) || applyTo(e);
}
override void visit(CondExp e)
{
doCond(e.econd) || doCond(e.e1) || doCond(e.e2) || applyTo(e);
}
}
bool walkPostorder(Expression e, StoppableVisitor v)
{
scope PostorderExpressionVisitor pv = new PostorderExpressionVisitor(v);
e.accept(pv);
return v.stop;
}