Package org.objectweb.asm.tree.analysis

Class SourceValue

java.lang.Object
org.objectweb.asm.tree.analysis.SourceValue
All Implemented Interfaces:
Value
public class SourceValue extends Object implements Value
A Value which keeps track of the bytecode instructions that can produce it.

  • Field Details

    • size

      public final int size
      The size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.

    • insns

      public final Set<AbstractInsnNode> insns
      The instructions that can produce this value. For example, for the Java code below, the instructions that can produce the value of i at line 5 are the two ISTORE instructions at line 1 and 3: 
       1: i = 0;
 2: if (...) {
 3:   i = 1;
 4: }
 5: return i;

  • Constructor Details

    • SourceValue

      public SourceValue(int size)
      Constructs a new SourceValue.
      Parameters:
      size - the size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.

    • SourceValue

      public SourceValue(int size, AbstractInsnNode insnNode)
      Constructs a new SourceValue.
      Parameters:
      size - the size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.
      insnNode - an instruction that can produce this value.

    • SourceValue

      public SourceValue(int size, Set<AbstractInsnNode> insnSet)
      Constructs a new SourceValue.
      Parameters:
      size - the size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.
      insnSet - the instructions that can produce this value.

  • Method Details

    • getSize

      public int getSize()
      Returns the size of this value.
      Specified by:
      getSize in interface Value
      Returns:
      the size of this value, in 32 bits words. This size is 1 for byte, boolean, char, short, int, float, object and array types, and 2 for long and double.

    • equals

      public boolean equals(Object value)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object