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1
24
25 package org.aspectj.compiler.base.ast;
26
27 import org.aspectj.compiler.base.*;
28 import java.io.IOException  ;
29
30 import org.aspectj.compiler.base.bcg.CodeBuilder;
31 import org.aspectj.compiler.base.bcg.Label;
32
33 public final class DoubleType extends RealType {
34
35 protected boolean isAssignableFromOtherType(Type other) {
36 return (other instanceof NumericType);
37 }
38
39 public String getName() { return "double"; }
40 public int getTypeIndex() { return Type.DOUBLE; }
41 public Type getRefType() { return getTypeManager().getType("java.lang", "Double"); }
42 public Expr getNullExpr() { return getAST().makeLiteral(0.0); }
43
44 public DoubleType(JavaCompiler compiler) {
45 super(compiler);
46 }
47
48 public String getDescriptor() { return "D"; }
50 public int getSlotCount() { return 2; }
51
52 private LiteralExpr makeLit(double d) {
54 return getAST().makeLiteral(d);
55 }
56 private LiteralExpr makeBooleanLit(boolean b) {
57 return getAST().makeLiteral(b);
58 }
59
60 LiteralExpr foldCast(LiteralExpr rand) {
61 return makeLit(rand.getDoubleValue());
62 }
63
64 strictfp LiteralExpr foldPlusOp(LiteralExpr rand) {
65 return makeLit(+ rand.getDoubleValue());
66 }
67 strictfp LiteralExpr foldMinusOp(LiteralExpr rand) {
68 return makeLit(- rand.getDoubleValue());
69 }
70
71 strictfp LiteralExpr foldAddOp(LiteralExpr rand1, LiteralExpr rand2) {
72 return makeLit(rand1.getDoubleValue() + rand2.getDoubleValue());
73 }
74
75 strictfp LiteralExpr foldNumericOp(String op,
76 LiteralExpr lit1, LiteralExpr lit2) {
77 final AST ast = getAST();
78 double a = lit1.getDoubleValue();
79 double b = lit2.getDoubleValue();
80 if (op == "-") return ast.makeLiteral(a - b);
81 else if (op == "%") return ast.makeLiteral(a % b);
82 else if (op == "/") return ast.makeLiteral(a / b);
83 else if (op == "*") return ast.makeLiteral(a * b);
84 else throw new RuntimeException ("bad numeric op " + op);
85 }
86
87 LiteralExpr foldEqualityTestOp(String op, LiteralExpr lit1, LiteralExpr lit2) {
88 final AST ast = getAST();
89 double a = lit1.getDoubleValue();
90 double b = lit2.getDoubleValue();
91 if (op == "==") return ast.makeLiteral(a == b);
92 else if (op == "!=") return ast.makeLiteral(a != b);
93 else throw new RuntimeException ("bad op " + op);
94 }
95
96 LiteralExpr foldNumericTestOp(String op, LiteralExpr lit1, LiteralExpr lit2) {
97 final AST ast = getAST();
98 double a = lit1.getDoubleValue();
99 double b = lit2.getDoubleValue();
100 if (op == "<") return ast.makeLiteral(a < b);
101 else if (op == "<=") return ast.makeLiteral(a <= b);
102 else if (op == ">=") return ast.makeLiteral(a >= b);
103 else if (op == ">") return ast.makeLiteral(a > b);
104 else throw new RuntimeException ("bad op " + op);
105 }
106
107
109 void emitAdd(CodeBuilder cb) { cb.emitDADD(); }
110
111 void emitNumericOp(CodeBuilder cb, String op) {
112 if (op == "-") cb.emitDSUB();
113 else if (op == "%") cb.emitDREM();
114 else if (op == "/") cb.emitDDIV();
115 else if (op == "*") cb.emitDMUL();
116 }
117 void emitNeg(CodeBuilder cb) { cb.emitDNEG(); }
118
119 public void emitLoad(CodeBuilder cb, int loc) { cb.emitDLOAD(loc); }
120 public void emitStore(CodeBuilder cb, int loc) { cb.emitDSTORE(loc); }
121 public void emitReturn(CodeBuilder cb) { cb.emitDRETURN(); }
122
123 void emitCast(CodeBuilder cb, Type castTo) {
124 ((NumericType) castTo).emitCastFromDouble(cb);
125 }
126 void emitCastFromInt(CodeBuilder cb) { cb.emitI2D(); }
127 void emitCastFromFloat(CodeBuilder cb) { cb.emitF2D(); }
128 void emitCastFromLong(CodeBuilder cb) { cb.emitL2D(); }
129 void emitCastFromDouble(CodeBuilder cb) { }
130
131 void emitPop(CodeBuilder cb) { cb.emitPOP2(); }
132 void emitDup(CodeBuilder cb) { cb.emitDUP2(); }
133 void emitDupX1(CodeBuilder cb) { cb.emitDUP2_X1(); }
134 void emitDupX2(CodeBuilder cb) { cb.emitDUP2_X2(); }
135
136 void emitZero(CodeBuilder cb) { cb.emitDoubleConstant(0.0); }
137 void emitOne(CodeBuilder cb) { cb.emitDoubleConstant(1.0); }
138 void emitMinusOne(CodeBuilder cb) { cb.emitDoubleConstant(-1.0); }
139
140 void emitEqualityCompare(CodeBuilder cb, String op, Label t, Label f) {
141 cb.emitDCMPL(); if (op == "==") cb.emitIFEQ(t, f);
143 else if (op == "!=") cb.emitIFNE(t, f);
144 }
145
146 void emitNumericCompare(CodeBuilder cb, String op, Label t, Label f) {
147 if (op == "<") { cb.emitDCMPG(); cb.emitIFLT(t, f); }
148 else if (op == "<=") { cb.emitDCMPG(); cb.emitIFLE(t, f); }
149 else if (op == ">=") { cb.emitDCMPL(); cb.emitIFGE(t, f); }
150 else if (op == ">") { cb.emitDCMPL(); cb.emitIFGT(t, f); }
151 }
152
153 void emitAload(CodeBuilder cb) { cb.emitDALOAD(); }
154 void emitAstore(CodeBuilder cb) { cb.emitDASTORE(); }
155
156 }
157
158
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