Repository navigation
Expand file tree
/
Copy pathProxyCodeHelpers.java
More file actions
350 lines (313 loc) · 10.8 KB
/
Copy pathProxyCodeHelpers.java
File metadata and controls
350 lines (313 loc) · 10.8 KB
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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
package org.python.compiler;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.Map.Entry;
import org.objectweb.asm.Type;
import org.python.core.Py;
import org.python.core.PyException;
import org.python.core.PyMethod;
import org.python.core.PyObject;
import org.python.core.PyProxy;
import org.python.core.PyReflectedFunction;
import org.python.util.Generic;
/*
* Various constants and methods for generating Proxy code
*/
public class ProxyCodeHelpers {
public static final int tBoolean=0;
public static final int tByte=1;
public static final int tShort=2;
public static final int tInteger=3;
public static final int tLong=4;
public static final int tFloat=5;
public static final int tDouble=6;
public static final int tCharacter=7;
public static final int tVoid=8;
public static final int tOther=9;
public static final int tNone=10;
public static Map<Class<?>, Integer> types = fillTypes();
public static Map<Class<?>, Integer> fillTypes() {
Map<Class<?>, Integer> typeMap = Generic.map();
typeMap.put(Boolean.TYPE, tBoolean);
typeMap.put(Byte.TYPE, tByte);
typeMap.put(Short.TYPE, tShort);
typeMap.put(Integer.TYPE, tInteger);
typeMap.put(Long.TYPE, tLong);
typeMap.put(Float.TYPE, tFloat);
typeMap.put(Double.TYPE, tDouble);
typeMap.put(Character.TYPE, tCharacter);
typeMap.put(Void.TYPE, tVoid);
return typeMap;
}
public static int getType(Class<?> c) {
if (c == null) {
return tNone;
}
Object i = types.get(c);
if (i == null) {
return tOther;
} else {
return ((Integer)i);
}
}
/**
* Retrieves <code>name</code> from the PyObject in <code>proxy</code> if it's defined in
* Python. This is a specialized helper function for internal PyProxy use.
*/
public static PyObject findPython(PyProxy proxy, String name) {
PyObject o = proxy._getPyInstance();
if (o == null) {
proxy.__initProxy__(new Object[0]);
o = proxy._getPyInstance();
}
PyObject ret = o.__findattr__(name);
if (ret instanceof PyMethod) {
PyMethod meth = ((PyMethod)ret);
if (meth.__func__ instanceof PyReflectedFunction) {
PyReflectedFunction func = (PyReflectedFunction)meth.__func__;
if (func.nargs > 0 && proxy.getClass() == func.argslist[0].declaringClass) {
// This function is the default return for the proxy type if the Python instance
// hasn't returned something of its own from __findattr__, so do the standard
// Java call on this
return null;
}
}
}
Py.setSystemState(proxy._getPySystemState());
return ret;
}
public static PyException notImplementedAbstractMethod(
PyProxy proxy, String name, String superClass) {
PyObject o = proxy._getPyInstance();
String msg = String.format(
"'%.200s' object does not implement abstract method '%.200s' from '%.200s'",
o.getType().fastGetName(),
name,
superClass);
return Py.NotImplementedError(msg);
}
public static String mapClass(Class<?> c) {
String name = c.getName();
int index = name.indexOf(".");
if (index == -1) {
return name;
}
StringBuffer buf = new StringBuffer(name.length());
int last_index = 0;
while (index != -1) {
buf.append(name.substring(last_index, index));
buf.append("/");
last_index = index+1;
index = name.indexOf(".", last_index);
}
buf.append(name.substring(last_index, name.length()));
return buf.toString();
}
public static String mapType(Class<?> type) {
if (type.isArray())
return "["+mapType(type.getComponentType());
switch (getType(type)) {
case tByte: return "B";
case tCharacter: return "C";
case tDouble: return "D";
case tFloat: return "F";
case tInteger: return "I";
case tLong: return "J";
case tShort: return "S";
case tBoolean: return "Z";
case tVoid: return "V";
default:
return "L"+mapClass(type)+";";
}
}
public static String makeSig(Class<?> ret, Class<?>... sig) {
String[] mapped = new String[sig.length];
for (int i = 0; i < mapped.length; i++) {
mapped[i] = mapType(sig[i]);
}
return makeSig(mapType(ret), mapped);
}
public static String makeSig(String returnType, String... parameterTypes) {
StringBuilder buf = new StringBuilder("(");
for (String param : parameterTypes) {
buf.append(param);
}
return buf.append(')').append(returnType).toString();
}
public static void doReturn(Code code, Class<?> type) throws Exception {
switch (getType(type)) {
case tNone:
break;
case tCharacter:
case tBoolean:
case tByte:
case tShort:
case tInteger:
code.ireturn();
break;
case tLong:
code.lreturn();
break;
case tFloat:
code.freturn();
break;
case tDouble:
code.dreturn();
break;
case tVoid:
code.return_();
break;
default:
code.areturn();
break;
}
}
public static void doNullReturn(Code code, Class<?> type) throws Exception {
switch (getType(type)) {
case tNone:
break;
case tCharacter:
case tBoolean:
case tByte:
case tShort:
case tInteger:
code.iconst_0();
code.ireturn();
break;
case tLong:
code.lconst_0();
code.lreturn();
break;
case tFloat:
code.fconst_0();
code.freturn();
break;
case tDouble:
code.dconst_0();
code.dreturn();
break;
case tVoid:
code.return_();
break;
default:
code.aconst_null();
code.areturn();
break;
}
}
public static String[] mapClasses(Class<?>[] classes) {
String[] mapped = new String[classes.length];
for (int i = 0; i < mapped.length; i++) {
mapped[i] = mapClass(classes[i]);
}
return mapped;
}
public static String[] mapExceptions(Class<?>[] classes) {
String[] exceptionTypes = new String[classes.length];
for (int i = 0; i < classes.length; i++) {
// Exceptions are represented by their internal names
exceptionTypes[i] = Type.getType(classes[i]).getInternalName();
}
return exceptionTypes;
}
public static class MethodDescr {
public final Class<?> returnType;
public final String name;
public final Class<?>[] parameters;
public final Class<?>[] exceptions;
public final Map<String, Object> methodAnnotations;
public final Map<String, Object>[] parameterAnnotations;
public MethodDescr(Method m) {
this(m.getName(), m.getReturnType(), m.getParameterTypes(), m.getExceptionTypes(), null, null);
}
public MethodDescr(String name,
Class<?> returnType,
Class<?>[] parameters,
Class<?>[] exceptions) {
this.name = name;
this.returnType = returnType;
this.parameters = parameters;
this.exceptions = exceptions;
this.methodAnnotations = null;
this.parameterAnnotations = null;
}
public MethodDescr(String name,
Class<?> returnType,
Class<?>[] parameters,
Class<?>[] exceptions,
Map<String, Object> methodAnnotations,
Map<String, Object>[] parameterAnnotations) {
this.name = name;
this.returnType = returnType;
this.parameters = parameters;
this.exceptions = exceptions;
this.methodAnnotations = methodAnnotations;
this.parameterAnnotations = parameterAnnotations;
}
@Override
public int hashCode() {
return name.hashCode() + parameters.length;
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof MethodDescr)) {
return false;
}
MethodDescr oDescr = (MethodDescr)obj;
if (!name.equals(oDescr.name) || parameters.length != oDescr.parameters.length) {
return false;
}
for (int i = 0; i < parameters.length; i++) {
if (!parameters[i].equals(oDescr.parameters[i])) {
return false;
}
}
return true;
}
}
public static class ConstructorDescr extends MethodDescr {
public ConstructorDescr(Constructor<?> cons) {
this(cons.getParameterTypes(), cons.getExceptionTypes());
}
public ConstructorDescr(Class<?>[] parameters, Class<?>[] exceptions) {
super("<init>", Void.TYPE, parameters, exceptions);
}
}
public static class AnnotationDescr {
public final Class<?> annotation;
public final Map<String, Object> fields;
public AnnotationDescr(Class<?>annotation) {
this.annotation = annotation;
this.fields = null;
}
public AnnotationDescr(Class<?>annotation, Map<String, Object> fields) {
this.annotation = annotation;
this.fields = fields;
}
public boolean hasFields() {
if (fields == null) {
return false;
}
return true;
}
public String getName() {
return mapType(annotation);
}
public Map<String, Object> getFields() {
return fields;
}
@Override
public int hashCode() {
if (hasFields()) {
int hash = annotation.hashCode();
for (Entry<String, Object> field: fields.entrySet()) {
hash += field.getKey().hashCode() + field.getValue().hashCode();
}
return hash;
} else {
return annotation.hashCode();
}
}
}
}