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1 package gnu.bytecode;
2
3 public class PrimType extends Type {
4
5 public PrimType (String  nam, String sig, int siz, Class reflectClass) {
6 super(nam, sig);
7 size = siz;
8 this.reflectClass = reflectClass;
9 Type.registerTypeForClass(reflectClass, this);
10 }
11
12 protected PrimType(PrimType type)
13 {
14 super(type.this_name, type.signature);
15 size = type.size;
16 reflectClass = type.reflectClass;
17 }
18
19 public Object coerceFromObject (Object obj)
20 {
21 if (obj.getClass() == reflectClass)
22 return obj;
23 char sig1 = (signature == null || signature.length() != 1) ? ' '
24 : signature.charAt(0);
25 switch (sig1)
26 {
27 case 'B': return new Byte (((Number ) obj).byteValue());
28 case 'S': return new Short (((Number ) obj).shortValue());
29 case 'I': return new Integer (((Number ) obj).intValue());
30 case 'J': return new Long (((Number ) obj).longValue());
31 case 'F': return new Float (((Number ) obj).floatValue());
32 case 'D': return new Double (((Number ) obj).doubleValue());
33 }
34 throw new ClassCastException ("don't know how to coerce "
35 + obj.getClass().getName() + " to "
36 + getName());
37 }
38
39
41 public char charValue (Object value)
42 {
43 return ((Character ) value).charValue();
44 }
45
46
48 public static boolean booleanValue (Object value)
49 {
50 return ! (value instanceof Boolean ) || ((Boolean ) value).booleanValue();
51 }
52
53 public void emitCoerceToObject (CodeAttr code)
54 {
55 char sig1 = getSignature().charAt(0);
56 ClassType clas;
57 Method method;
58 String cname;
59 Type[] args;
60 switch (sig1)
61 {
62 case 'Z':
63 clas = ClassType.make("java.lang.Boolean");
64 code.emitIfIntNotZero();
65 code.emitGetStatic(clas.getDeclaredField("TRUE"));
66 code.emitElse();
67 code.emitGetStatic(clas.getDeclaredField("FALSE"));
68 code.emitFi();
69 return;
70 case 'C': cname = "java.lang.Character"; break;
71 case 'B': cname = "java.lang.Byte"; break;
72 case 'S': cname = "java.lang.Short"; break;
73 case 'I': cname = "java.lang.Integer"; break;
74 case 'J': cname = "java.lang.Long"; break;
75 case 'F': cname = "java.lang.Float"; break;
76 case 'D': cname = "java.lang.Double"; break;
77 default: cname = null; }
79 clas = ClassType.make(cname);
80 args = new Type[1];
81 args[0] = this;
82 method = clas.getDeclaredMethod("<init>", args);
83 code.emitNew(clas);
84 code.emitDupX();
85 code.emitSwap();
86 code.emitInvokeSpecial(method);
87 }
88
89 public void emitIsInstance (CodeAttr code)
90 {
91 char sig1 = (signature == null || signature.length() != 1) ? ' '
92 : signature.charAt(0);
93 if (sig1 == 'Z') boolean_ctype.emitIsInstance(code);
95 else if (sig1 == 'V')
96 {
97 code.emitPop(1);
98 code.emitPushInt(1);
99 }
100 else
102 number_type.emitIsInstance(code);
103 }
104
105 public void emitCoerceFromObject (CodeAttr code)
106 {
107 char sig1 = (signature == null || signature.length() != 1) ? ' '
108 : signature.charAt(0);
109 if (sig1 == 'Z') {
111 code.emitCheckcast(boolean_ctype);
112 code.emitInvokeVirtual(booleanValue_method);
113 }
114 else if (sig1 == 'V')
115 code.emitPop(1);
116 else
117 {
118 code.emitCheckcast(number_type);
119 if (sig1 == 'I' || sig1 == 'S' || sig1 == 'B')
120 code.emitInvokeVirtual(intValue_method);
121 else if (sig1 == 'J')
122 code.emitInvokeVirtual(longValue_method);
123 else if (sig1 == 'D')
124 code.emitInvokeVirtual(doubleValue_method);
125 else if (sig1 == 'F')
126 code.emitInvokeVirtual(floatValue_method);
127 else
129 super.emitCoerceFromObject(code);
130 }
131 }
132
133 public static int compare(PrimType type1, PrimType type2)
134 {
135 char sig1 = type1.signature.charAt(0);
136 char sig2 = type2.signature.charAt(0);
137
138 if (sig1 == sig2)
139 return 0;
140
141 if (sig1 == 'V')
143 return 1;
144 if (sig2 == 'V')
145 return -1;
146
147 if (sig1 == 'Z' || sig2 == 'Z')
151 return -3;
152
153 if (sig1 == 'C')
154 return type2.size > 2 ? -1 : -3;
155 if (sig2 == 'C')
156 return type1.size > 2 ? 1 : -3;
157
158 if (sig1 == 'D')
159 return 1;
160 if (sig2 == 'D')
161 return -1;
162 if (sig1 == 'F')
163 return 1;
164 if (sig2 == 'F')
165 return -1;
166 if (sig1 == 'J')
167 return 1;
168 if (sig2 == 'J')
169 return -1;
170 if (sig1 == 'I')
171 return 1;
172 if (sig2 == 'I')
173 return -1;
174 if (sig1 == 'S')
175 return 1;
176 if (sig2 == 'S')
177 return -1;
178 return -3;
180 }
181
182 public int compare(Type other)
183 {
184 if (other instanceof PrimType)
185 return compare(this, (PrimType) other);
186 if (! (other instanceof ClassType))
187 return -3;
188 char sig1 = signature.charAt(0);
189 String otherName = other.getName();
190 if (otherName == null)
191 return -1;
192 switch (sig1)
193 {
194 case 'V':
195 return 1;
196 case 'Z':
197 case 'C':
198 break;
199 case 'D':
200 if (otherName.equals("java.lang.Double")
201 || otherName.equals("gnu.math.DFloNum"))
202 return 0; if (otherName.equals("java.lang.Float"))
204 return 1;
205 break;
206 case 'F':
207 if (otherName.equals("java.lang.Double")
208 || otherName.equals("gnu.math.DFloNum"))
209 return -1;
210 if (otherName.equals("java.lang.Float"))
211 return 0; break;
213 case 'I':
214 if (otherName.equals("java.lang.Integer"))
215 return 0; if (otherName.equals("gnu.math.IntNum"))
217 return -1;
218
219 default:
220 if (otherName.equals("java.lang.Double")
221 || otherName.equals("java.lang.Float")
222 || otherName.equals("gnu.math.DFloNum"))
223 return -1;
224 }
225 if (otherName.equals("java.lang.Object")
226 || other == tostring_type)
227 return -1;
228 return -2;
229 }
230 }
231 |
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