Class OpMultiply

All Implemented Interfaces:
Opcodes, SpelNode

public class OpMultiply extends Operator
Implements the multiply operator.

Conversions and promotions are handled as defined in Section 5.6.2 of the Java Language Specification, with the addiction of BigDecimal/BigInteger management:

If any of the operands is of a reference type, unboxing conversion (Section 5.1.8) is performed. Then:
If either operand is of type BigDecimal, the other is converted to BigDecimal.
If either operand is of type double, the other is converted to double.
Otherwise, if either operand is of type float, the other is converted to float.
If either operand is of type BigInteger, the other is converted to BigInteger.
Otherwise, if either operand is of type long, the other is converted to long.
Otherwise, both operands are converted to type int.

Andy Clement, Juergen Hoeller, Sam Brannen, Giovanni Dall'Oglio Risso
  • Constructor Details

    • OpMultiply

      public OpMultiply(int startPos, int endPos, SpelNodeImpl... operands)
  • Method Details

    • getValueInternal

      public TypedValue getValueInternal(ExpressionState state) throws EvaluationException
      Implements the multiply operator directly here for certain types of supported operands and otherwise delegates to any registered overloader for types not supported here.

      Supported operand types:

      • numbers
      • String and int ('abc' * 2 == 'abcabc')
      Specified by:
      getValueInternal in class SpelNodeImpl
    • isCompilable

      public boolean isCompilable()
      Description copied from class: SpelNodeImpl
      Check whether a node can be compiled to bytecode. The reasoning in each node may be different but will typically involve checking whether the exit type descriptor of the node is known and any relevant child nodes are compilable.
      isCompilable in class SpelNodeImpl
      true if this node can be compiled to bytecode
    • generateCode

      public void generateCode(MethodVisitor mv, CodeFlow cf)
      Description copied from class: SpelNodeImpl
      Generate the bytecode for this node into the supplied visitor. Context info about the current expression being compiled is available in the codeflow object, e.g. including information about the type of the object currently on the stack.
      generateCode in class SpelNodeImpl
      mv - the ASM MethodVisitor into which code should be generated
      cf - a context object with info about what is on the stack