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comparison dmd/DoStatement.d @ 155:a43c65469219

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+ Statement.interpret() + ContinueStatement.interpret() + DoStatement.interpret()
author trass3r
date Wed, 15 Sep 2010 17:31:22 +0200
parents e28b18c23469
children af724d3510d7
comparison
equal deleted inserted replaced
154:14feb7ae01a6 155:a43c65469219
4 import dmd.Statement; 4 import dmd.Statement;
5 import dmd.Expression; 5 import dmd.Expression;
6 import dmd.Loc; 6 import dmd.Loc;
7 import dmd.Scope; 7 import dmd.Scope;
8 import dmd.InterState; 8 import dmd.InterState;
9 import dmd.GlobalExpressions;
9 import dmd.HdrGenState; 10 import dmd.HdrGenState;
10 import dmd.OutBuffer; 11 import dmd.OutBuffer;
11 import dmd.InlineScanState; 12 import dmd.InlineScanState;
12 import dmd.IRState; 13 import dmd.IRState;
13 import dmd.BE; 14 import dmd.BE;
98 assert(false); 99 assert(false);
99 } 100 }
100 101
101 override Expression interpret(InterState istate) 102 override Expression interpret(InterState istate)
102 { 103 {
103 assert(false); 104 version(LOG)
105 writef("DoStatement::interpret()\n");
106
107 if (istate.start == this)
108 istate.start = null;
109 Expression e;
110
111 if (istate.start)
112 {
113 e = body_ ? body_.interpret(istate) : null;
114 if (istate.start)
115 return null;
116 if (e is EXP_CANT_INTERPRET)
117 return e;
118 if (e is EXP_BREAK_INTERPRET)
119 return null;
120 if (e is EXP_CONTINUE_INTERPRET)
121 goto Lcontinue;
122 if (e)
123 return e;
124 }
125
126 while (1)
127 {
128 e = body_ ? body_.interpret(istate) : null;
129 if (e is EXP_CANT_INTERPRET)
130 break;
131 if (e is EXP_BREAK_INTERPRET)
132 {
133 e = null;
134 break;
135 }
136 if (e && e !is EXP_CONTINUE_INTERPRET)
137 break;
138
139 Lcontinue:
140 e = condition.interpret(istate);
141 if (e is EXP_CANT_INTERPRET)
142 break;
143 if (!e.isConst())
144 {
145 e = EXP_CANT_INTERPRET;
146 break;
147 }
148 if (e.isBool(true))
149 {
150 }
151 else if (e.isBool(false))
152 {
153 e = null;
154 break;
155 }
156 else
157 assert(0);
158 }
159 return e;
104 } 160 }
105 161
106 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) 162 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
107 { 163 {
108 assert(false); 164 assert(false);