org.objectweb.asm.Opcodes# FCONST_1 ( ) 源码实例Demo

下面列出了org.objectweb.asm.Opcodes# FCONST_1 ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： Bats 文件： AsmUtil.java


/**
 * Determine if the given opcode is a load of a constant (xCONST_y).
 *
 * @param opcode the opcode
 * @return true if the opcode is one of the constant loading ones, false otherwise
 */
public static boolean isXconst(final int opcode) {
  switch(opcode) {
  case Opcodes.ICONST_0:
  case Opcodes.ICONST_1:
  case Opcodes.ICONST_2:
  case Opcodes.ICONST_3:
  case Opcodes.ICONST_4:
  case Opcodes.ICONST_5:
  case Opcodes.ICONST_M1:
  case Opcodes.DCONST_0:
  case Opcodes.DCONST_1:
  case Opcodes.FCONST_0:
  case Opcodes.FCONST_1:
  case Opcodes.LCONST_0:
  case Opcodes.LCONST_1:
    return true;
  }

  return false;
}

源代码2 项目： CodenameOne 文件： BasicInstruction.java


@Override
public boolean isConstant() {
    switch (opcode) {
        case Opcodes.ACONST_NULL:
        case Opcodes.ICONST_0:
        case Opcodes.ICONST_1:
        case Opcodes.ICONST_2:
        case Opcodes.ICONST_3:
        case Opcodes.ICONST_4:
        case Opcodes.ICONST_5:
        case Opcodes.ICONST_M1:
        case Opcodes.FCONST_0:
        case Opcodes.FCONST_1:
        case Opcodes.FCONST_2:
        case Opcodes.DCONST_0:
        case Opcodes.DCONST_1:
        case Opcodes.LCONST_0:
        case Opcodes.LCONST_1:
        case Opcodes.LDC:
            return true;
    }
    return super.isConstant();
}

源代码3 项目： pitest 文件： ReturnValuesMutator.java


/**
 * Mutates a primitive float return (<code>Opcode.FRETURN</code>). The
 * strategy used was translated from jumble BCEL code. The following is
 * complicated by the problem of <tt>NaN</tt>s. By default the new value is
 * <code>-(x + 1)</code>, but this doesn't work for <tt>NaN</tt>s. But for a
 * <tt>NaN</tt> <code>x != x</code> is true, and we use this to detect them.
 *
 * @see #mutatePrimitiveDoubleReturn()
 */
private void mutatePrimitiveFloatReturn() {
  if (shouldMutate("primitive float", "(x != NaN)? -(x + 1) : -1 ")) {
    final Label label = new Label();

    super.visitInsn(Opcodes.DUP);
    super.visitInsn(Opcodes.DUP);
    super.visitInsn(Opcodes.FCMPG);
    super.visitJumpInsn(Opcodes.IFEQ, label);

    super.visitInsn(Opcodes.POP);
    super.visitInsn(Opcodes.FCONST_0);

    // the following code is executed in NaN case, too
    super.visitLabel(label);
    super.visitInsn(Opcodes.FCONST_1);
    super.visitInsn(Opcodes.FADD);
    super.visitInsn(Opcodes.FNEG);
    super.visitInsn(Opcodes.FRETURN);
  }
}

源代码4 项目： zelixkiller 文件： InsnValue.java


public static InsnValue floatValue(int opcode) {
	switch (opcode) {
	case Opcodes.FCONST_0:
		return new InsnValue(Type.FLOAT_TYPE, 0.0f);
	case Opcodes.FCONST_1:
		return new InsnValue(Type.FLOAT_TYPE, 1.0f);
	case Opcodes.FCONST_2:
		return new InsnValue(Type.FLOAT_TYPE, 2.0f);
	}
	return InsnValue.FLOAT_VALUE;
}

源代码5 项目： CodenameOne 文件： ArithmeticExpression.java


public static boolean isArg(Instruction instr) {
    if (instr instanceof ArithmeticExpression) {
        return true;
    }
    if (instr instanceof AssignableExpression) {
        StringBuilder dummy = new StringBuilder();
        
        if (((AssignableExpression)instr).assignTo(null, dummy)) {
            return true;
        }
    }
    int opcode = instr.getOpcode();
    switch (opcode) {
        
        case Opcodes.FLOAD:
        case Opcodes.DLOAD:
        case Opcodes.ILOAD:
        case Opcodes.LLOAD:
        case org.objectweb.asm.Opcodes.ICONST_0:
        case org.objectweb.asm.Opcodes.ICONST_1: 
        case org.objectweb.asm.Opcodes.ICONST_2:
        case org.objectweb.asm.Opcodes.ICONST_3: 
        case org.objectweb.asm.Opcodes.ICONST_4: 
        case org.objectweb.asm.Opcodes.ICONST_5:
        case org.objectweb.asm.Opcodes.ICONST_M1:
        case org.objectweb.asm.Opcodes.LCONST_0:
        case org.objectweb.asm.Opcodes.LCONST_1: 
        case Opcodes.DCONST_0:
        case Opcodes.DCONST_1:
        case Opcodes.FCONST_0:
        case Opcodes.FCONST_1:
        case Opcodes.FCONST_2:
        case org.objectweb.asm.Opcodes.BIPUSH:
        case org.objectweb.asm.Opcodes.SIPUSH:
        case Opcodes.LDC:
            return true;
    }
    return false;
}

源代码6 项目： pitest 文件： AbstractCRCRVisitor.java


void translateToByteCode(final Float constant) {
    if (constant == 0.0F) {
        super.visitInsn(Opcodes.FCONST_0);
    } else if (constant == 1.0F) {
        super.visitInsn(Opcodes.FCONST_1);
    } else if (constant == 2.0F) {
        super.visitInsn(Opcodes.FCONST_2);
    } else {
        super.visitLdcInsn(constant);
    }
}

源代码7 项目： pitest 文件： AbstractCRCRVisitor.java


Number translateToNumber(final int opcode) {
    switch (opcode) {
        case Opcodes.ICONST_M1:
            return Integer.valueOf(-1);
        case Opcodes.ICONST_0:
            return Integer.valueOf(0);
        case Opcodes.ICONST_1:
            return Integer.valueOf(1);
        case Opcodes.ICONST_2:
            return Integer.valueOf(2);
        case Opcodes.ICONST_3:
            return Integer.valueOf(3);
        case Opcodes.ICONST_4:
            return Integer.valueOf(4);
        case Opcodes.ICONST_5:
            return Integer.valueOf(5);
        case Opcodes.LCONST_0:
            return Long.valueOf(0L);
        case Opcodes.LCONST_1:
            return Long.valueOf(1L);
        case Opcodes.FCONST_0:
            return Float.valueOf(0F);
        case Opcodes.FCONST_1:
            return Float.valueOf(1F);
        case Opcodes.FCONST_2:
            return Float.valueOf(2F);
        case Opcodes.DCONST_0:
            return Double.valueOf(0D);
        case Opcodes.DCONST_1:
            return Double.valueOf(1D);
        default:
            return null;
    }
}

源代码8 项目： pitest 文件： InlineConstantMutator.java


private void translateToByteCode(final Float constant) {
  if (constant == 0.0F) {
    super.visitInsn(Opcodes.FCONST_0);
  } else if (constant == 1.0F) {
    super.visitInsn(Opcodes.FCONST_1);
  } else if (constant == 2.0F) {
    super.visitInsn(Opcodes.FCONST_2);
  } else {
    super.visitLdcInsn(constant);
  }
}

源代码9 项目： pitest 文件： InlineConstantMutator.java


/**
 * Translates the opcode to a number (inline constant) if possible or
 * returns <code>null</code> if the opcode cannot be translated.
 *
 * @param opcode
 *          that might represent an inline constant.
 * @return the value of the inline constant represented by opcode or
 *         <code>null</code> if the opcode does not represent a
 *         number/constant.
 */
private Number translateToNumber(final int opcode) {
  switch (opcode) {
  case Opcodes.ICONST_M1:
    return Integer.valueOf(-1);
  case Opcodes.ICONST_0:
    return Integer.valueOf(0);
  case Opcodes.ICONST_1:
    return Integer.valueOf(1);
  case Opcodes.ICONST_2:
    return Integer.valueOf(2);
  case Opcodes.ICONST_3:
    return Integer.valueOf(3);
  case Opcodes.ICONST_4:
    return Integer.valueOf(4);
  case Opcodes.ICONST_5:
    return Integer.valueOf(5);
  case Opcodes.LCONST_0:
    return Long.valueOf(0L);
  case Opcodes.LCONST_1:
    return Long.valueOf(1L);
  case Opcodes.FCONST_0:
    return Float.valueOf(0F);
  case Opcodes.FCONST_1:
    return Float.valueOf(1F);
  case Opcodes.FCONST_2:
    return Float.valueOf(2F);
  case Opcodes.DCONST_0:
    return Double.valueOf(0D);
  case Opcodes.DCONST_1:
    return Double.valueOf(1D);
  default:
    return null;
  }
}

源代码10 项目： zelixkiller 文件： StackHelper.java


public InsnValue createConstant(AbstractInsnNode insn) throws AnalyzerException {
	switch (insn.getOpcode()) {
	case Opcodes.ACONST_NULL:
		return InsnValue.NULL_REFERENCE_VALUE;
	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:
	case Opcodes.BIPUSH:
	case Opcodes.SIPUSH:
		return InsnValue.intValue(insn);
	case Opcodes.LCONST_0:
	case Opcodes.LCONST_1:
		return InsnValue.longValue(insn.getOpcode());
	case Opcodes.FCONST_0:
	case Opcodes.FCONST_1:
	case Opcodes.FCONST_2:
		return InsnValue.floatValue(insn.getOpcode());
	case Opcodes.DCONST_0:
	case Opcodes.DCONST_1:
		return InsnValue.doubleValue(insn.getOpcode());
	case Opcodes.LDC:
		Object obj = ((LdcInsnNode) insn).cst;
		if (obj instanceof Type) {
			return new InsnValue((Type) obj);
		} else {
			Type t = Type.getType(obj.getClass());
			int sort = t.getSort();
			// Non-included types:
			// Type.ARRAY
			// Type.VOID
			// Type.METHOD
			switch (sort) {
			case Type.BOOLEAN:
				return InsnValue.intValue((int) obj);
			case Type.CHAR:
				return InsnValue.charValue((char) obj);
			case Type.BYTE:
				return InsnValue.byteValue((byte) obj);
			case Type.SHORT:
				return InsnValue.shortValue((short) obj);
			case Type.INT:
				return InsnValue.intValue((int) obj);
			case Type.FLOAT:
				return InsnValue.floatValue((float) obj);
			case Type.LONG:
				return InsnValue.longValue((long) obj);
			case Type.DOUBLE:
				return InsnValue.doubleValue((double) obj);
			case Type.OBJECT:
				return new InsnValue(t, obj);
			}
			return new InsnValue(t);
		}
	case Opcodes.NEW:
		return new InsnValue(Type.getType(((TypeInsnNode) insn).desc));
	case Opcodes.JSR:
		// TODO: IDK if this is right.
		return InsnValue.REFERENCE_VALUE;
	}

	return null;
}

源代码11 项目： bazel 文件： LambdaDesugaring.java


/**
 * Returns whether a given instruction can be used to push argument of {@code type} on stack.
 */
private /* static */ boolean isPushForType(AbstractInsnNode insn, Type type) {
  int opcode = insn.getOpcode();
  if (opcode == type.getOpcode(Opcodes.ILOAD)) {
    return true;
  }
  // b/62060793: AsyncAwait rewrites bytecode to convert java methods into state machine with
  // support of lambdas. Constant zero values are pushed on stack for all yet uninitialized
  // local variables. And SIPUSH instruction is used to advance an internal state of a state
  // machine.
  switch (type.getSort()) {
    case Type.BOOLEAN:
      return opcode == Opcodes.ICONST_0 || opcode == Opcodes.ICONST_1;

    case Type.BYTE:
    case Type.CHAR:
    case Type.SHORT:
    case Type.INT:
      return opcode == Opcodes.SIPUSH
          || opcode == Opcodes.ICONST_0
          || opcode == Opcodes.ICONST_1
          || opcode == Opcodes.ICONST_2
          || opcode == Opcodes.ICONST_3
          || opcode == Opcodes.ICONST_4
          || opcode == Opcodes.ICONST_5
          || opcode == Opcodes.ICONST_M1;

    case Type.LONG:
      return opcode == Opcodes.LCONST_0 || opcode == Opcodes.LCONST_1;

    case Type.FLOAT:
      return opcode == Opcodes.FCONST_0
          || opcode == Opcodes.FCONST_1
          || opcode == Opcodes.FCONST_2;

    case Type.DOUBLE:
      return opcode == Opcodes.DCONST_0 || opcode == Opcodes.DCONST_1;

    case Type.OBJECT:
    case Type.ARRAY:
      return opcode == Opcodes.ACONST_NULL;

    default:
      // Support for BIPUSH and LDC* opcodes is not implemented as there is no known use case.
      return false;
  }
}

方法所在类

org.objectweb.asm.Opcodes