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

public Class BooleanLiteral

extends Literal
Class Inheritance
Imports
org.springframework.asm.MethodVisitor, org.springframework.expression.spel.CodeFlow, org.springframework.expression.spel.support.BooleanTypedValue
Represents the literal values TRUE and FALSE.
Author
Andy Clement
Since
3.0

Field Summary

Modifier and TypeField and Description
private final BooleanTypedValue
value

Constructor Summary

AccessConstructor and Description
public
BooleanLiteral(String payload, int startPos, int endPos, boolean value)

Method Summary

Modifier and TypeMethod and Description
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.
public BooleanTypedValue
getLiteralValue()

Implements abstract org.springframework.expression.spel.ast.Literal.getLiteralValue.

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.Literal:
getIntLiteralgetLongLiteralgetOriginalValuegetRealLiteralgetValueInternalisNumberLiteraltoStringtoStringAST

Field Detail

valueback to summary
private final BooleanTypedValue value

Constructor Detail

BooleanLiteralback to summary
public BooleanLiteral(String payload, int startPos, int endPos, boolean value)

Method Detail

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
getLiteralValueback to summary
public BooleanTypedValue getLiteralValue()

Implements abstract org.springframework.expression.spel.ast.Literal.getLiteralValue.

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