List of usage examples for org.objectweb.asm Opcodes LDIV
int LDIV
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From source file:org.decojer.cavaj.readers.asm.ReadMethodVisitor.java
License:Open Source License
@Override public void visitInsn(final int opcode) { T t = null;//from w ww.j a va 2 s .c o m int iValue = Integer.MIN_VALUE; Object oValue = null; switch (opcode) { case Opcodes.NOP: // nothing to do, ignore break; /******* * ADD * *******/ case Opcodes.DADD: t = T.DOUBLE; // fall through case Opcodes.FADD: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.IADD: if (t == null) { t = T.INT; } // fall through case Opcodes.LADD: if (t == null) { t = T.LONG; } add(new ADD(this.ops.size(), opcode, this.line, t)); break; /********* * ALOAD * *********/ case Opcodes.AALOAD: t = T.REF; // fall through case Opcodes.BALOAD: if (t == null) { t = T.SMALL; } // fall through case Opcodes.CALOAD: if (t == null) { t = T.CHAR; } // fall through case Opcodes.DALOAD: if (t == null) { t = T.DOUBLE; } // fall through case Opcodes.FALOAD: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.IALOAD: if (t == null) { t = T.INT; } // fall through case Opcodes.LALOAD: if (t == null) { t = T.LONG; } // fall through case Opcodes.SALOAD: if (t == null) { t = T.SHORT; } add(new ALOAD(this.ops.size(), opcode, this.line, t)); break; /******* * AND * *******/ case Opcodes.IAND: t = T.AINT; // fall through case Opcodes.LAND: if (t == null) { t = T.LONG; } add(new AND(this.ops.size(), opcode, this.line, t)); break; /*************** * ARRAYLENGTH * ***************/ case Opcodes.ARRAYLENGTH: add(new ARRAYLENGTH(this.ops.size(), opcode, this.line)); break; /********** * ASTORE * **********/ case Opcodes.AASTORE: t = T.REF; // fall through case Opcodes.BASTORE: if (t == null) { t = T.SMALL; } // fall through case Opcodes.CASTORE: if (t == null) { t = T.CHAR; } // fall through case Opcodes.DASTORE: if (t == null) { t = T.DOUBLE; } // fall through case Opcodes.FASTORE: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.IASTORE: if (t == null) { t = T.INT; } // fall through case Opcodes.LASTORE: if (t == null) { t = T.LONG; } // fall through case Opcodes.SASTORE: if (t == null) { t = T.SHORT; } add(new ASTORE(this.ops.size(), opcode, this.line, t)); break; /******** * CAST * ********/ case Opcodes.D2F: t = T.DOUBLE; oValue = T.FLOAT; // fall through case Opcodes.D2I: if (t == null) { t = T.DOUBLE; oValue = T.INT; } // fall through case Opcodes.D2L: if (t == null) { t = T.DOUBLE; oValue = T.LONG; } // fall through case Opcodes.F2D: if (t == null) { t = T.FLOAT; oValue = T.DOUBLE; } // fall through case Opcodes.F2I: if (t == null) { t = T.FLOAT; oValue = T.INT; } // fall through case Opcodes.F2L: if (t == null) { t = T.FLOAT; oValue = T.LONG; } // fall through case Opcodes.I2B: if (t == null) { t = T.INT; oValue = T.BYTE; } // fall through case Opcodes.I2C: if (t == null) { t = T.INT; oValue = T.CHAR; } // fall through case Opcodes.I2D: if (t == null) { t = T.INT; oValue = T.DOUBLE; } // fall through case Opcodes.I2F: if (t == null) { t = T.INT; oValue = T.FLOAT; } // fall through case Opcodes.I2L: if (t == null) { t = T.INT; oValue = T.LONG; } // fall through case Opcodes.I2S: if (t == null) { t = T.INT; oValue = T.SHORT; } // fall through case Opcodes.L2D: if (t == null) { t = T.LONG; oValue = T.DOUBLE; } // fall through case Opcodes.L2F: if (t == null) { t = T.LONG; oValue = T.FLOAT; } // fall through case Opcodes.L2I: if (t == null) { t = T.LONG; oValue = T.INT; } assert oValue instanceof T; add(new CAST(this.ops.size(), opcode, this.line, t, (T) oValue)); break; /******* * CMP * *******/ case Opcodes.DCMPG: t = T.DOUBLE; iValue = CMP.T_G; // fall through case Opcodes.DCMPL: if (t == null) { t = T.DOUBLE; iValue = CMP.T_L; } // fall through case Opcodes.FCMPG: if (t == null) { t = T.FLOAT; iValue = CMP.T_G; } // fall through case Opcodes.FCMPL: if (t == null) { t = T.FLOAT; iValue = CMP.T_L; } // fall through case Opcodes.LCMP: if (t == null) { t = T.LONG; iValue = CMP.T_0; } add(new CMP(this.ops.size(), opcode, this.line, t, iValue)); break; /******* * DIV * *******/ case Opcodes.DDIV: t = T.DOUBLE; // fall through case Opcodes.FDIV: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.IDIV: if (t == null) { t = T.INT; } // fall through case Opcodes.LDIV: if (t == null) { t = T.LONG; } add(new DIV(this.ops.size(), opcode, this.line, t)); break; /******* * DUP * *******/ case Opcodes.DUP: oValue = DUP.Kind.DUP; // fall through case Opcodes.DUP_X1: if (oValue == null) { oValue = DUP.Kind.DUP_X1; } // fall through case Opcodes.DUP_X2: if (oValue == null) { oValue = DUP.Kind.DUP_X2; } // fall through case Opcodes.DUP2: if (oValue == null) { oValue = DUP.Kind.DUP2; } // fall through case Opcodes.DUP2_X1: if (oValue == null) { oValue = DUP.Kind.DUP2_X1; } // fall through case Opcodes.DUP2_X2: if (oValue == null) { oValue = DUP.Kind.DUP2_X2; } add(new DUP(this.ops.size(), opcode, this.line, (DUP.Kind) oValue)); break; /*********** * MONITOR * ***********/ case Opcodes.MONITORENTER: oValue = MONITOR.Kind.ENTER; // fall through case Opcodes.MONITOREXIT: if (oValue == null) { oValue = MONITOR.Kind.EXIT; } add(new MONITOR(this.ops.size(), opcode, this.line, (MONITOR.Kind) oValue)); break; /******* * MUL * *******/ case Opcodes.DMUL: t = T.DOUBLE; // fall through case Opcodes.FMUL: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.IMUL: if (t == null) { t = T.INT; } // fall through case Opcodes.LMUL: if (t == null) { t = T.LONG; } add(new MUL(this.ops.size(), opcode, this.line, t)); break; /******* * NEG * *******/ case Opcodes.DNEG: t = T.DOUBLE; // fall through case Opcodes.FNEG: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.INEG: if (t == null) { t = T.INT; } // fall through case Opcodes.LNEG: if (t == null) { t = T.LONG; } add(new NEG(this.ops.size(), opcode, this.line, t)); break; /****** * OR * ******/ case Opcodes.IOR: t = T.AINT; // fall through case Opcodes.LOR: if (t == null) { t = T.LONG; } add(new OR(this.ops.size(), opcode, this.line, t)); break; /******* * POP * *******/ case Opcodes.POP: oValue = POP.Kind.POP; // fall through case Opcodes.POP2: if (oValue == null) { oValue = POP.Kind.POP2; } add(new POP(this.ops.size(), opcode, this.line, (POP.Kind) oValue)); break; /******** * PUSH * ********/ case Opcodes.ACONST_NULL: t = T.REF; // fall through case Opcodes.DCONST_0: if (t == null) { oValue = 0D; t = T.DOUBLE; } // fall through case Opcodes.FCONST_0: if (t == null) { oValue = 0F; t = T.FLOAT; } // fall through case Opcodes.ICONST_0: if (t == null) { oValue = 0; t = T.getJvmIntT(0); } // fall through case Opcodes.LCONST_0: if (t == null) { oValue = 0L; t = T.LONG; } // fall through case Opcodes.DCONST_1: if (t == null) { oValue = 1D; t = T.DOUBLE; } // fall through case Opcodes.FCONST_1: if (t == null) { oValue = 1F; t = T.FLOAT; } // fall through case Opcodes.ICONST_1: if (t == null) { oValue = 1; t = T.getJvmIntT(1); } // fall through case Opcodes.LCONST_1: if (t == null) { oValue = 1L; t = T.LONG; } // fall through case Opcodes.FCONST_2: if (t == null) { oValue = 2F; t = T.FLOAT; } // fall through case Opcodes.ICONST_2: if (t == null) { oValue = 2; t = T.getJvmIntT(2); } // fall through case Opcodes.ICONST_3: if (t == null) { oValue = 3; t = T.getJvmIntT(3); } // fall through case Opcodes.ICONST_4: if (t == null) { oValue = 4; t = T.getJvmIntT(4); } // fall through case Opcodes.ICONST_5: if (t == null) { oValue = 5; t = T.getJvmIntT(5); } // fall through case Opcodes.ICONST_M1: if (t == null) { oValue = -1; t = T.getJvmIntT(-1); } add(new PUSH(this.ops.size(), opcode, this.line, t, oValue)); break; /******* * REM * *******/ case Opcodes.DREM: t = T.DOUBLE; // fall through case Opcodes.FREM: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.IREM: if (t == null) { t = T.INT; } // fall through case Opcodes.LREM: if (t == null) { t = T.LONG; } add(new REM(this.ops.size(), opcode, this.line, t)); break; /********** * RETURN * **********/ case Opcodes.ARETURN: t = T.REF; // fall through case Opcodes.DRETURN: if (t == null) { t = T.DOUBLE; } // fall through case Opcodes.FRETURN: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.IRETURN: if (t == null) { t = T.AINT; } // fall through case Opcodes.LRETURN: if (t == null) { t = T.LONG; } // fall through case Opcodes.RETURN: if (t == null) { t = T.VOID; } add(new RETURN(this.ops.size(), opcode, this.line, t)); break; /******* * SHL * *******/ case Opcodes.ISHL: t = T.INT; // fall through case Opcodes.LSHL: if (t == null) { t = T.LONG; } add(new SHL(this.ops.size(), opcode, this.line, t, T.INT)); break; /******* * SHR * *******/ case Opcodes.ISHR: case Opcodes.IUSHR: t = T.INT; // fall through case Opcodes.LSHR: case Opcodes.LUSHR: if (t == null) { t = T.LONG; } add(new SHR(this.ops.size(), opcode, this.line, t, T.INT, opcode == Opcodes.IUSHR || opcode == Opcodes.LUSHR)); break; /******* * SUB * *******/ case Opcodes.DSUB: t = T.DOUBLE; // fall through case Opcodes.FSUB: if (t == null) { t = T.FLOAT; } // fall through case Opcodes.ISUB: if (t == null) { t = T.INT; } // fall through case Opcodes.LSUB: if (t == null) { t = T.LONG; } add(new SUB(this.ops.size(), opcode, this.line, t)); break; /******** * SWAP * ********/ case Opcodes.SWAP: add(new SWAP(this.ops.size(), opcode, this.line)); break; /********* * THROW * *********/ case Opcodes.ATHROW: add(new THROW(this.ops.size(), opcode, this.line)); break; /******* * XOR * *******/ case Opcodes.IXOR: t = T.AINT; // fall through case Opcodes.LXOR: { if (t == null) { t = T.LONG; } add(new XOR(this.ops.size(), opcode, this.line, t)); break; } default: log.warn(getM() + ": Unknown insn opcode '" + opcode + "'!"); } }
From source file:org.evosuite.instrumentation.error.DivisionByZeroInstrumentation.java
License:Open Source License
@Override public void visitInsn(int opcode) { // Check *DIV for divisonbyzero if (opcode == Opcodes.IDIV || opcode == Opcodes.IREM) { mv.visitInsn(Opcodes.DUP);/*from w w w . j a v a 2 s.c om*/ insertBranch(Opcodes.IFNE, "java/lang/ArithmeticException"); } else if (opcode == Opcodes.LDIV || opcode == Opcodes.LREM) { mv.visitInsn(Opcodes.DUP2); mv.visitLdcInsn(0L); mv.visitInsn(Opcodes.LCMP); insertBranch(Opcodes.IFNE, "java/lang/ArithmeticException"); } }
From source file:org.evosuite.instrumentation.error.ErrorConditionChecker.java
License:Open Source License
public static int overflowDistance(long op1, long op2, int opcode) { switch (opcode) { case Opcodes.LADD: return overflowDistanceAdd(op1, op2); case Opcodes.LSUB: return overflowDistanceSub(op1, op2); case Opcodes.LMUL: return overflowDistanceMul(op1, op2); case Opcodes.LDIV: return overflowDistanceDiv(op1, op2); }//from w w w . j a v a 2 s .c om return Integer.MAX_VALUE; }
From source file:org.evosuite.instrumentation.error.OverflowInstrumentation.java
License:Open Source License
@Override public void visitInsn(int opcode) { // Overflow checks switch (opcode) { case Opcodes.IADD: case Opcodes.ISUB: case Opcodes.IMUL: mv.visitInsn(Opcodes.DUP2);// ww w .j a va 2 s .co m mv.visitLdcInsn(opcode); mv.visitMethodInsn(Opcodes.INVOKESTATIC, CHECKER, "underflowDistance", "(III)I", false); insertBranchWithoutException(Opcodes.IFGT); case Opcodes.IDIV: mv.visitInsn(Opcodes.DUP2); mv.visitLdcInsn(opcode); mv.visitMethodInsn(Opcodes.INVOKESTATIC, CHECKER, "overflowDistance", "(III)I", false); insertBranchWithoutException(Opcodes.IFGT); break; case Opcodes.FADD: case Opcodes.FSUB: case Opcodes.FMUL: mv.visitInsn(Opcodes.DUP2); mv.visitLdcInsn(opcode); mv.visitMethodInsn(Opcodes.INVOKESTATIC, CHECKER, "underflowDistance", "(FFI)I", false); insertBranchWithoutException(Opcodes.IFGE); case Opcodes.FDIV: mv.visitInsn(Opcodes.DUP2); mv.visitLdcInsn(opcode); mv.visitMethodInsn(Opcodes.INVOKESTATIC, CHECKER, "overflowDistance", "(FFI)I", false); insertBranchWithoutException(Opcodes.IFGE); break; case Opcodes.DADD: case Opcodes.DSUB: case Opcodes.DMUL: int loc = mv.newLocal(Type.DOUBLE_TYPE); mv.storeLocal(loc); mv.visitInsn(Opcodes.DUP2); mv.loadLocal(loc); mv.visitInsn(Opcodes.DUP2_X2); mv.visitLdcInsn(opcode); mv.visitMethodInsn(Opcodes.INVOKESTATIC, CHECKER, "underflowDistance", "(DDI)I", false); insertBranchWithoutException(Opcodes.IFGE); case Opcodes.DDIV: loc = mv.newLocal(Type.DOUBLE_TYPE); mv.storeLocal(loc); mv.visitInsn(Opcodes.DUP2); mv.loadLocal(loc); mv.visitInsn(Opcodes.DUP2_X2); mv.visitLdcInsn(opcode); mv.visitMethodInsn(Opcodes.INVOKESTATIC, CHECKER, "overflowDistance", "(DDI)I", false); insertBranchWithoutException(Opcodes.IFGE); break; case Opcodes.LADD: case Opcodes.LSUB: case Opcodes.LMUL: int loc2 = mv.newLocal(Type.LONG_TYPE); mv.storeLocal(loc2); mv.visitInsn(Opcodes.DUP2); mv.loadLocal(loc2); mv.visitInsn(Opcodes.DUP2_X2); mv.visitLdcInsn(opcode); mv.visitMethodInsn(Opcodes.INVOKESTATIC, CHECKER, "underflowDistance", "(JJI)I", false); insertBranchWithoutException(Opcodes.IFGE); case Opcodes.LDIV: loc2 = mv.newLocal(Type.LONG_TYPE); mv.storeLocal(loc2); mv.visitInsn(Opcodes.DUP2); mv.loadLocal(loc2); mv.visitInsn(Opcodes.DUP2_X2); mv.visitLdcInsn(opcode); mv.visitMethodInsn(Opcodes.INVOKESTATIC, CHECKER, "overflowDistance", "(JJI)I", false); insertBranchWithoutException(Opcodes.IFGE); break; } }
From source file:org.evosuite.instrumentation.error.TestLongOverflow.java
License:Open Source License
@Test public void testDivOverflow() { Assume.assumeTrue(y != 0L);//from w w w . j a va 2 s . co m System.out.println("x: " + x + ", y: " + y); int result = ErrorConditionChecker.overflowDistance(x, y, Opcodes.LDIV); assertOverflow(new BigDecimal(x).divide(new BigDecimal(y), 10, RoundingMode.HALF_UP), result, x / y); }
From source file:org.evosuite.instrumentation.error.TestLongUnderflow.java
License:Open Source License
@Test public void testDivUnderflow() { Assume.assumeTrue(y != 0L);//from w ww .j av a 2s . c o m int result = ErrorConditionChecker.underflowDistance(x, y, Opcodes.LDIV); assertUnderflow(new BigDecimal(x).divide(new BigDecimal(y), 10, RoundingMode.HALF_UP), result, x / y); }
From source file:org.evosuite.instrumentation.mutation.ReplaceArithmeticOperator.java
License:Open Source License
private static boolean hasDivZeroError(int opcode) { switch (opcode) { case Opcodes.IDIV: case Opcodes.IREM: case Opcodes.FDIV: case Opcodes.FREM: case Opcodes.LDIV: case Opcodes.LREM: case Opcodes.DDIV: case Opcodes.DREM: return true; default://from w w w. j ava 2 s . com return false; } }
From source file:org.evosuite.instrumentation.mutation.ReplaceArithmeticOperator.java
License:Open Source License
/** * <p>calculate</p>//from w w w. j ava 2 s .co m * * @param x a long. * @param y a long. * @param opcode a int. * @return a long. */ public static long calculate(long x, long y, int opcode) { switch (opcode) { case Opcodes.LADD: return x + y; case Opcodes.LSUB: return x - y; case Opcodes.LMUL: return x * y; case Opcodes.LDIV: return x / y; case Opcodes.LREM: return x % y; } throw new RuntimeException("Unknown integer opcode: " + opcode); }
From source file:org.jacoco.core.internal.instr.FrameTracker.java
License:Open Source License
@Override public void visitInsn(final int opcode) { final Object t1, t2, t3, t4; switch (opcode) { case Opcodes.NOP: case Opcodes.RETURN: break;//from ww w .j a v a 2 s.co m case Opcodes.ARETURN: case Opcodes.ATHROW: case Opcodes.FRETURN: case Opcodes.IRETURN: case Opcodes.MONITORENTER: case Opcodes.MONITOREXIT: case Opcodes.POP: pop(1); break; case Opcodes.DRETURN: case Opcodes.LRETURN: case Opcodes.POP2: pop(2); break; case Opcodes.AASTORE: case Opcodes.BASTORE: case Opcodes.CASTORE: case Opcodes.FASTORE: case Opcodes.IASTORE: case Opcodes.SASTORE: pop(3); break; case Opcodes.LASTORE: case Opcodes.DASTORE: pop(4); break; case Opcodes.ICONST_M1: case Opcodes.ICONST_0: case Opcodes.ICONST_1: case Opcodes.ICONST_2: case Opcodes.ICONST_3: case Opcodes.ICONST_4: case Opcodes.ICONST_5: push(Opcodes.INTEGER); break; case Opcodes.ARRAYLENGTH: case Opcodes.F2I: case Opcodes.I2B: case Opcodes.I2C: case Opcodes.I2S: case Opcodes.INEG: pop(1); push(Opcodes.INTEGER); break; case Opcodes.BALOAD: case Opcodes.CALOAD: case Opcodes.D2I: case Opcodes.FCMPG: case Opcodes.FCMPL: case Opcodes.IADD: case Opcodes.IALOAD: case Opcodes.IAND: case Opcodes.IDIV: case Opcodes.IMUL: case Opcodes.IOR: case Opcodes.IREM: case Opcodes.ISHL: case Opcodes.ISHR: case Opcodes.ISUB: case Opcodes.IUSHR: case Opcodes.IXOR: case Opcodes.L2I: case Opcodes.SALOAD: pop(2); push(Opcodes.INTEGER); break; case Opcodes.DCMPG: case Opcodes.DCMPL: case Opcodes.LCMP: pop(4); push(Opcodes.INTEGER); break; case Opcodes.FCONST_0: case Opcodes.FCONST_1: case Opcodes.FCONST_2: push(Opcodes.FLOAT); break; case Opcodes.FNEG: case Opcodes.I2F: pop(1); push(Opcodes.FLOAT); break; case Opcodes.D2F: case Opcodes.FADD: case Opcodes.FALOAD: case Opcodes.FDIV: case Opcodes.FMUL: case Opcodes.FREM: case Opcodes.FSUB: case Opcodes.L2F: pop(2); push(Opcodes.FLOAT); break; case Opcodes.LCONST_0: case Opcodes.LCONST_1: push(Opcodes.LONG); push(Opcodes.TOP); break; case Opcodes.F2L: case Opcodes.I2L: pop(1); push(Opcodes.LONG); push(Opcodes.TOP); break; case Opcodes.D2L: case Opcodes.LALOAD: case Opcodes.LNEG: pop(2); push(Opcodes.LONG); push(Opcodes.TOP); break; case Opcodes.LSHL: case Opcodes.LSHR: case Opcodes.LUSHR: pop(3); push(Opcodes.LONG); push(Opcodes.TOP); break; case Opcodes.LADD: case Opcodes.LAND: case Opcodes.LDIV: case Opcodes.LMUL: case Opcodes.LOR: case Opcodes.LREM: case Opcodes.LSUB: case Opcodes.LXOR: pop(4); push(Opcodes.LONG); push(Opcodes.TOP); break; case Opcodes.DCONST_0: case Opcodes.DCONST_1: push(Opcodes.DOUBLE); push(Opcodes.TOP); break; case Opcodes.F2D: case Opcodes.I2D: pop(1); push(Opcodes.DOUBLE); push(Opcodes.TOP); break; case Opcodes.DALOAD: case Opcodes.DNEG: case Opcodes.L2D: pop(2); push(Opcodes.DOUBLE); push(Opcodes.TOP); break; case Opcodes.DADD: case Opcodes.DDIV: case Opcodes.DMUL: case Opcodes.DREM: case Opcodes.DSUB: pop(4); push(Opcodes.DOUBLE); push(Opcodes.TOP); break; case Opcodes.ACONST_NULL: push(Opcodes.NULL); break; case Opcodes.AALOAD: pop(1); t1 = pop(); push(Type.getType(((String) t1).substring(1))); break; case Opcodes.DUP: t1 = pop(); push(t1); push(t1); break; case Opcodes.DUP_X1: t1 = pop(); t2 = pop(); push(t1); push(t2); push(t1); break; case Opcodes.DUP_X2: t1 = pop(); t2 = pop(); t3 = pop(); push(t1); push(t3); push(t2); push(t1); break; case Opcodes.DUP2: t1 = pop(); t2 = pop(); push(t2); push(t1); push(t2); push(t1); break; case Opcodes.DUP2_X1: t1 = pop(); t2 = pop(); t3 = pop(); push(t2); push(t1); push(t3); push(t2); push(t1); break; case Opcodes.DUP2_X2: t1 = pop(); t2 = pop(); t3 = pop(); t4 = pop(); push(t2); push(t1); push(t4); push(t3); push(t2); push(t1); break; case Opcodes.SWAP: t1 = pop(); t2 = pop(); push(t1); push(t2); break; default: throw new IllegalArgumentException(); } mv.visitInsn(opcode); }
From source file:org.jboss.byteman.rule.expression.ArithmeticExpression.java
License:Open Source License
public void compile(MethodVisitor mv, CompileContext compileContext) throws CompileException { // make sure we are at the right source line compileContext.notifySourceLine(line); int currentStack = compileContext.getStackCount(); int expectedStack = 0; Expression operand0 = getOperand(0); Expression operand1 = getOperand(1); Type type0 = operand0.getType(); Type type1 = operand1.getType(); // compile lhs -- it adds 1 or 2 to the stack height operand0.compile(mv, compileContext); // do any required type conversion compileTypeConversion(type0, type, mv, compileContext); // compile rhs -- it adds 1 or 2 to the stack height operand1.compile(mv, compileContext); // do any required type conversion compileTypeConversion(type1, type, mv, compileContext); try {/* w w w . j av a2 s.co m*/ // n.b. be careful with characters here if (type == type.B || type == type.S || type == type.C || type == type.I) { // TODO we should probably only respect the byte, short and char types for + and - // TODO also need to decide how to handle divide by zero expectedStack = 1; switch (oper) { case MUL: mv.visitInsn(Opcodes.IMUL); break; case DIV: mv.visitInsn(Opcodes.IDIV); break; case PLUS: mv.visitInsn(Opcodes.IADD); break; case MINUS: mv.visitInsn(Opcodes.ISUB); break; case MOD: mv.visitInsn(Opcodes.IREM); break; default: // should never happen throw new CompileException("ArithmeticExpression.compile : unexpected operator " + oper); } // now coerce back to appropriate type if (type == type.B) { mv.visitInsn(Opcodes.I2B); } else if (type == type.S) { mv.visitInsn(Opcodes.I2S); } else if (type == type.C) { mv.visitInsn(Opcodes.I2C); } // else if (type == type.I) { do nothing } // ok, we popped two bytes but added one compileContext.addStackCount(-1); } else if (type == type.J) { expectedStack = 2; switch (oper) { case MUL: mv.visitInsn(Opcodes.LMUL); break; case DIV: mv.visitInsn(Opcodes.LDIV); break; case PLUS: mv.visitInsn(Opcodes.LADD); break; case MINUS: mv.visitInsn(Opcodes.LSUB); break; case MOD: mv.visitInsn(Opcodes.LREM); break; default: // should never happen throw new CompileException("ArithmeticExpression.compile : unexpected operator " + oper); } // ok, we popped four bytes but added two compileContext.addStackCount(-2); } else if (type == type.F) { expectedStack = 1; switch (oper) { case MUL: mv.visitInsn(Opcodes.FMUL); break; case DIV: mv.visitInsn(Opcodes.FDIV); break; case PLUS: mv.visitInsn(Opcodes.FADD); break; case MINUS: mv.visitInsn(Opcodes.FSUB); break; case MOD: mv.visitInsn(Opcodes.FREM); break; default: // should never happen throw new CompileException("ArithmeticExpression.compile : unexpected operator " + oper); } // ok, we popped two bytes but added one compileContext.addStackCount(-1); } else if (type == type.D) { expectedStack = 2; switch (oper) { case MUL: mv.visitInsn(Opcodes.DMUL); break; case DIV: mv.visitInsn(Opcodes.DDIV); break; case PLUS: mv.visitInsn(Opcodes.DADD); break; case MINUS: mv.visitInsn(Opcodes.DSUB); break; case MOD: mv.visitInsn(Opcodes.DREM); break; default: // should never happen throw new CompileException("ArithmeticExpression.compile : unexpected operator " + oper); } // ok, we popped four bytes but added two compileContext.addStackCount(-2); } else { throw new CompileException( "ArithmeticExpression.compile : unexpected result type " + type.getName()); } } catch (CompileException e) { throw e; } catch (Exception e) { throw new CompileException("ArithmeticExpression.compile : unexpected exception for operation " + token + getPos() + " in rule " + rule.getName(), e); } // check stack heights if (compileContext.getStackCount() != currentStack + expectedStack) { throw new CompileException("ArithmeticExpression.compile : invalid stack height " + compileContext.getStackCount() + " expecting " + (currentStack + expectedStack)); } }