Top Description Fields Constructors Methods
org.springframework.expression.spel.ast

public Class OpAnd

extends Operator
Class Inheritance
Imports
org.springframework.asm.Label, .MethodVisitor, org.springframework.expression.EvaluationException, .TypedValue, org.springframework.expression.spel.CodeFlow, .ExpressionState, .SpelEvaluationException, .SpelMessage, org.springframework.expression.spel.support.BooleanTypedValue, org.springframework.lang.Nullable
Represents the boolean AND operation.
Authors
Andy Clement, Mark Fisher, Oliver Becker
Since
3.0

Field Summary

Inherited from org.springframework.expression.spel.ast.Operator:
leftActualDescriptorrightActualDescriptor

Constructor Summary

AccessConstructor and Description
public
OpAnd(int startPos, int endPos, SpelNodeImpl... operands)

Method Summary

Modifier and TypeMethod and Description
private void
assertValueNotNull(Boolean value)

public void
generateCode(MethodVisitor
the ASM MethodVisitor into which code should be generated
mv, CodeFlow
a context object with info about what is on the stack
cf)

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.generateCode.

Generate the bytecode for this node into the supplied visitor.

private boolean
getBooleanValue(ExpressionState state, SpelNodeImpl operand)

public TypedValue
getValueInternal(ExpressionState state)

Implements abstract org.springframework.expression.spel.ast.SpelNodeImpl.getValueInternal.

public boolean
isCompilable()

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.isCompilable.

Check whether a node can be compiled to bytecode.

Inherited from org.springframework.expression.spel.ast.Operator:
equalityCheckgenerateComparisonCodegetLeftOperandgetOperatorNamegetRightOperandisCompilableOperatorUsingNumericstoStringAST

Constructor Detail

OpAndback to summary
public OpAnd(int startPos, int endPos, SpelNodeImpl... operands)

Method Detail

assertValueNotNullback to summary
private void assertValueNotNull(Boolean value)
generateCodeback to summary
public void generateCode(MethodVisitor mv, CodeFlow cf)

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.generateCode.

Doc from org.springframework.expression.spel.ast.SpelNodeImpl.generateCode.

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.

Parameters
mv:MethodVisitor

the ASM MethodVisitor into which code should be generated

cf:CodeFlow

a context object with info about what is on the stack

Annotations
@Override
getBooleanValueback to summary
private boolean getBooleanValue(ExpressionState state, SpelNodeImpl operand)
getValueInternalback to summary
public TypedValue getValueInternal(ExpressionState state) throws EvaluationException

Implements abstract org.springframework.expression.spel.ast.SpelNodeImpl.getValueInternal.

Annotations
@Override
isCompilableback to summary
public boolean isCompilable()

Overrides org.springframework.expression.spel.ast.SpelNodeImpl.isCompilable.

Doc from org.springframework.expression.spel.ast.SpelNodeImpl.isCompilable.

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.

Returns:boolean

true if this node can be compiled to bytecode

Annotations
@Override