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1
28
29 package com.caucho.es.parser;
30
31 import com.caucho.es.ESException;
32
33 import java.io.IOException  ;
34
35
38 class PostfixExpr extends Expr {
39 final static int PREINC = 'i';
40 final static int PREDEC = 'd';
41 final static int POSTINC = 'I';
42 final static int POSTDEC = 'D';
43
44 private int code;
45 private FieldExpr field;
46 private IdExpr id;
47
48 private AssignExpr cheat;
49
50 PostfixExpr(Block block, int code, FieldExpr field)
51 {
52 super(block);
53
54 this.code = code;
55 this.field = field;
56
57 if (field != null)
58 field.setUsed();
59 }
60
61 PostfixExpr(Block block, int code, IdExpr id)
62 {
63 super(block);
64
65 this.code = code;
66 this.id = id;
67
68 if (id != null)
69 id.setUsed();
70 }
71
72 int getType()
73 {
74 if (id == null || ! id.isLocal())
75 return TYPE_NUMBER;
76 else if (id.getType() == TYPE_INTEGER)
77 return TYPE_INTEGER;
78 else if (id.getType() == TYPE_NUMBER)
79 return TYPE_NUMBER;
80 else
81 return TYPE_ES;
82 }
83
84 void exprStatement(Function fun) throws ESException
85 {
86 setTop();
87 fun.addExpr(this);
88 }
89
90 void printInt32Impl() throws IOException
91 {
92 switch (code) {
93 case PREINC:
94 if (! noValue)
95 cl.print("(");
96 cl.print(id.getId());
97 cl.print(" = ");
98 id.printInt32();
99 cl.print(" + 1");
100 if (! noValue)
101 cl.print(")");
102 return;
103 case PREDEC:
104 if (! noValue)
105 cl.print("(");
106 cl.print(id.getId());
107 cl.print(" = ");
108 id.printInt32();
109 cl.print(" - 1");
110 if (! noValue)
111 cl.print(")");
112 return;
113 case POSTINC:
114 if (! noValue) {
115 cl.print("_env._first(");
116 id.printInt32();
117 cl.print(", ");
118 }
119 cl.print(id.getId());
120 cl.print(" = ");
121 id.printInt32();
122 cl.print(" + 1");
123 if (! noValue)
124 cl.print(")");
125 return;
126 case POSTDEC:
127 if (! noValue) {
128 cl.print("_env._first(");
129 id.printInt32();
130 cl.print(", ");
131 }
132 cl.print(id.getId());
133 cl.print(" = ");
134 id.printInt32();
135 cl.print(" - 1");
136 if (! noValue)
137 cl.print(")");
138 return;
139 }
140 }
141
142 void printNumImpl() throws IOException
143 {
144 if (id != null && id.isLocal()) {
145 switch (code) {
146 case PREINC:
147 if (! noValue)
148 cl.print("(");
149 cl.print(id.getId());
150 cl.print(" = ");
151 id.printNum();
152 cl.print(" + 1");
153 if (! noValue)
154 cl.print(")");
155 return;
156 case PREDEC:
157 if (! noValue)
158 cl.print("(");
159 cl.print(id.getId());
160 cl.print(" = ");
161 id.printNum();
162 cl.print(" - 1");
163 if (! noValue)
164 cl.print(")");
165 return;
166 case POSTINC:
167 if (! noValue) {
168 cl.print("_env._first(");
169 id.printNum();
170 cl.print(", ");
171 }
172 cl.print(id.getId());
173 cl.print(" = ");
174 id.printNum();
175 cl.print(" + 1");
176 if (! noValue)
177 cl.print(")");
178 return;
179 case POSTDEC:
180 if (! noValue) {
181 cl.print("_env._first(");
182 id.printNum();
183 cl.print(", ");
184 }
185 cl.print(id.getId());
186 cl.print(" = ");
187 id.printNum();
188 cl.print(" - 1");
189 if (! noValue)
190 cl.print(")");
191 return;
192 }
193 }
194
195 switch (code) {
196 case PREINC:
197 case PREDEC:
198 cl.print("_env._pre(");
199 break;
200
201 case POSTINC:
202 case POSTDEC:
203 cl.print("_env._post(");
204 break;
205 }
206
207 if (field != null) {
208 field.getExpr().print();
209 cl.print(", ");
210 field.getField().printStr();
211 } else if (function.isGlobalScope()) {
212 cl.print("_env.global, ");
213 printLiteral(id.getId());
214 } else {
215 printLiteral(id.getId());
216 }
217
218 if (code == PREINC || code == POSTINC)
219 cl.print(", 1)");
220 else
221 cl.print(", -1)");
222 }
223
224 void printImpl() throws IOException
225 {
226 switch (code) {
227 case PREINC:
228 if (! noValue)
229 cl.print("(");
230 cl.print(id.getId());
231 cl.print(" = ESNumber.create(");
232 id.printNum();
233 cl.print(" + 1)");
234 if (! noValue)
235 cl.print(")");
236 return;
237 case PREDEC:
238 if (! noValue)
239 cl.print(")");
240 cl.print(id.getId());
241 cl.print(" = ESNumber.create(");
242 id.printNum();
243 cl.print(" - 1)");
244 if (! noValue)
245 cl.print(")");
246 return;
247 case POSTINC:
248 if (! noValue) {
249 cl.print("_env._first(");
250 id.print();
251 cl.print(", ");
252 }
253 cl.print(id.getId());
254 cl.print(" = ESNumber.create(");
255 id.printNum();
256 cl.print(" + 1)");
257 if (! noValue)
258 cl.print(")");
259 return;
260 case POSTDEC:
261 if (! noValue) {
262 cl.print("_env._first(");
263 id.print();
264 cl.print(", ");
265 }
266 cl.print(id.getId());
267 cl.print(" = ESNumber.create(");
268 id.printNum();
269 cl.print(" - 1)");
270 if (! noValue)
271 cl.print(")");
272 return;
273 }
274 return;
275 }
276 }
277 |
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