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package org.graalvm.compiler.nodes.calc;

import org.graalvm.compiler.core.common.calc.Condition;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.ValueNodeInterface;

import jdk.vm.ci.meta.Constant;
import jdk.vm.ci.meta.ConstantReflectionProvider;

Represents a conversion between primitive types.
/** * Represents a conversion between primitive types. */
public interface ConvertNode extends ValueNodeInterface { ValueNode getValue(); Constant convert(Constant c, ConstantReflectionProvider constantReflection); Constant reverse(Constant c, ConstantReflectionProvider constantReflection);
Check whether a conversion is lossless.
Returns:true iff reverse(convert(c)) == c for all c
/** * Check whether a conversion is lossless. * * @return true iff reverse(convert(c)) == c for all c */
boolean isLossless();
Check whether a conversion preserves comparison order.
Params:
  • op – a comparison operator
Returns:true iff (c1 op c2) == (convert(c1) op convert(c2)) for all c1, c2
/** * Check whether a conversion preserves comparison order. * * @param op a comparison operator * @return true iff (c1 op c2) == (convert(c1) op convert(c2)) for all c1, c2 */
default boolean preservesOrder(Condition op) { return isLossless(); }
Check whether a conversion preserves comparison order against a particular constant value.
Params:
  • op – a comparison operator
  • value –
  • constantReflection –
Returns:true iff (c1 op value) == (convert(c1) op convert(value)) for value and all c1
/** * Check whether a conversion preserves comparison order against a particular constant value. * * @param op a comparison operator * @param value * @param constantReflection * @return true iff (c1 op value) == (convert(c1) op convert(value)) for value and all c1 */
default boolean preservesOrder(Condition op, Constant value, ConstantReflectionProvider constantReflection) { return preservesOrder(op); } }