executionvisitor.java

来自「JAVA的一些源码 JAVA2 STANDARD EDITION DEVELO」· Java 代码 · 共 1,127 行 · 第 1/3 页

			stack().push(w1);
			stack().push(w3);
			stack().push(w2);
			stack().push(w1);
		}
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitDUP2(DUP2 o){
		Type t = stack().pop();
		if (t.getSize() == 2){
			stack().push(t);
			stack().push(t);
		}
		else{ // t.getSize() is 1
			Type u = stack().pop();
			stack().push(u);
			stack().push(t);
			stack().push(u);
			stack().push(t);
		}
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitDUP2_X1(DUP2_X1 o){
		Type t = stack().pop();
		if (t.getSize() == 2){
			Type u = stack().pop();
			stack().push(t);
			stack().push(u);
			stack().push(t);
		}
		else{ //t.getSize() is1
			Type u = stack().pop();
			Type v = stack().pop();
			stack().push(u);
			stack().push(t);
			stack().push(v);
			stack().push(u);
			stack().push(t);
		}
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitDUP2_X2(DUP2_X2 o){
		Type t = stack().pop();
		if (t.getSize() == 2){
			Type u = stack().pop();
			if (u.getSize() == 2){
				stack().push(t);
				stack().push(u);
				stack().push(t);
			}else{
				Type v = stack().pop();
				stack().push(t);
				stack().push(v);
				stack().push(u);
				stack().push(t);
			}
		}
		else{ //t.getSize() is 1
			Type u = stack().pop();
			Type v = stack().pop();
			if (v.getSize() == 2){
				stack().push(u);
				stack().push(t);
				stack().push(v);
				stack().push(u);
				stack().push(t);
			}else{
				Type w = stack().pop();
				stack().push(u);
				stack().push(t);
				stack().push(w);
				stack().push(v);
				stack().push(u);
				stack().push(t);
			}
		}
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitF2D(F2D o){
		stack().pop();
		stack().push(Type.DOUBLE);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitF2I(F2I o){
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitF2L(F2L o){
		stack().pop();
		stack().push(Type.LONG);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFADD(FADD o){
		stack().pop();
		stack().pop();
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFALOAD(FALOAD o){
		stack().pop();
		stack().pop();
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFASTORE(FASTORE o){
		stack().pop();
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFCMPG(FCMPG o){
		stack().pop();
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFCMPL(FCMPL o){
		stack().pop();
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFCONST(FCONST o){
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFDIV(FDIV o){
		stack().pop();
		stack().pop();
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFLOAD(FLOAD o){
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFMUL(FMUL o){
		stack().pop();
		stack().pop();
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFNEG(FNEG o){
		stack().pop();
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFREM(FREM o){
		stack().pop();
		stack().pop();
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFRETURN(FRETURN o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFSTORE(FSTORE o){
		locals().set(o.getIndex(), stack().pop());
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitFSUB(FSUB o){
		stack().pop();
		stack().pop();
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitGETFIELD(GETFIELD o){
		stack().pop();
		Type t = o.getFieldType(cpg);
		if (	t.equals(Type.BOOLEAN)	||
					t.equals(Type.CHAR)			||
					t.equals(Type.BYTE) 		||
					t.equals(Type.SHORT)		)
			t = Type.INT;
		stack().push(t);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitGETSTATIC(GETSTATIC o){
		Type t = o.getFieldType(cpg);
		if (	t.equals(Type.BOOLEAN)	||
					t.equals(Type.CHAR)			||
					t.equals(Type.BYTE) 		||
					t.equals(Type.SHORT)		)
			t = Type.INT;
		stack().push(t);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitGOTO(GOTO o){
		// no stack changes.
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitGOTO_W(GOTO_W o){
		// no stack changes.
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitI2B(I2B o){
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitI2C(I2C o){
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitI2D(I2D o){
		stack().pop();
		stack().push(Type.DOUBLE);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitI2F(I2F o){
		stack().pop();
		stack().push(Type.FLOAT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitI2L(I2L o){
		stack().pop();
		stack().push(Type.LONG);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitI2S(I2S o){
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIADD(IADD o){
		stack().pop();
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIALOAD(IALOAD o){
		stack().pop();
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIAND(IAND o){
		stack().pop();
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIASTORE(IASTORE o){
		stack().pop();
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitICONST(ICONST o){
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIDIV(IDIV o){
		stack().pop();
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIF_ACMPEQ(IF_ACMPEQ o){
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIF_ACMPNE(IF_ACMPNE o){
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIF_ICMPEQ(IF_ICMPEQ o){
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIF_ICMPGE(IF_ICMPGE o){
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIF_ICMPGT(IF_ICMPGT o){
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIF_ICMPLE(IF_ICMPLE o){
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIF_ICMPLT(IF_ICMPLT o){
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIF_ICMPNE(IF_ICMPNE o){
		stack().pop();
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIFEQ(IFEQ o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIFGE(IFGE o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIFGT(IFGT o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIFLE(IFLE o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIFLT(IFLT o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIFNE(IFNE o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIFNONNULL(IFNONNULL o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIFNULL(IFNULL o){
		stack().pop();
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIINC(IINC o){
		// stack is not changed.
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitILOAD(ILOAD o){
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitIMUL(IMUL o){
		stack().pop();
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitINEG(INEG o){
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitINSTANCEOF(INSTANCEOF o){
		stack().pop();
		stack().push(Type.INT);
	}
	/** Symbolically executes the corresponding Java Virtual Machine instruction. */ 
	public void visitINVOKEINTERFACE(INVOKEINTERFACE o){
		stack().pop();	//objectref
		for (int i=0; i<o.getArgumentTypes(cpg).length; i++){
			stack().pop();
		}
		// We are sure the invoked method will xRETURN eventually
		// We simulate xRETURNs functionality here because we
		// don't really "jump into" and simulate the invoked
		// method.
		if (o.getReturnType(cpg) != Type.VOID){
			Type t = o.getReturnType(cpg);
			if (	t.equals(Type.BOOLEAN)	||
						t.equals(Type.CHAR)			||
						t.equals(Type.BYTE) 		||
						t.equals(Type.SHORT)		)
				t = Type.INT;
			stack().push(t);
		}
	}