Package org.codehaus.groovy.transform.tailrec

Class AstHelper

java.lang.Object

org.codehaus.groovy.transform.tailrec.AstHelper

public class AstHelper
extends Object

Helping to create a few standard AST constructs

Method Summary

Modifier and Type	Method	Description
static ExpressionStatement	createVariableAlias(String aliasName, ClassNode variableType, String variableName)	Creates an alias variable that references another variable.
static ExpressionStatement	createVariableDefinition(String variableName, ClassNode variableType, Expression value)	Creates a local variable declaration for the supplied value.
static ExpressionStatement	createVariableDefinition(String variableName, ClassNode variableType, Expression value, boolean variableShouldBeFinal)	Creates a local variable declaration for the supplied value.
static VariableExpression	createVariableReference(Map<String,?> variableSpec)	Creates a variable reference from a name/type specification map.
static Statement	recurByThrowStatement()	This statement will throw exception which will be caught and redirected to jump to surrounding while loop's start label Also works from within Closures but is a tiny bit slower
static Statement	recurStatement()	This statement should make the code jump to surrounding while loop's start label Does not work from within Closures

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

createVariableDefinition

public static ExpressionStatement createVariableDefinition(String variableName,
 ClassNode variableType,
 Expression value)

Creates a local variable declaration for the supplied value.

Parameters:

variableName - the declared variable name

variableType - the declared variable type

value - the initial value expression

Returns:

a declaration statement for the new local variable

createVariableDefinition

public static ExpressionStatement createVariableDefinition(String variableName,
 ClassNode variableType,
 Expression value,
 boolean variableShouldBeFinal)

Creates a local variable declaration for the supplied value.

Parameters:

variableName - the declared variable name

variableType - the declared variable type

value - the initial value expression

variableShouldBeFinal - whether the declared variable should be final

Returns:

a declaration statement for the new local variable

createVariableAlias

public static ExpressionStatement createVariableAlias(String aliasName,
 ClassNode variableType,
 String variableName)

Creates an alias variable that references another variable.

Parameters:

aliasName - the alias variable name

variableType - the alias variable type

variableName - the referenced variable name

Returns:

a declaration statement for the alias variable

createVariableReference

public static VariableExpression createVariableReference(Map<String,?> variableSpec)

Creates a variable reference from a name/type specification map.

Parameters:

variableSpec - a map containing name and type entries

Returns:

a variable expression for the supplied specification

recurStatement

public static Statement recurStatement()

This statement should make the code jump to surrounding while loop's start label Does not work from within Closures

recurByThrowStatement

public static Statement recurByThrowStatement()

This statement will throw exception which will be caught and redirected to jump to surrounding while loop's start label Also works from within Closures but is a tiny bit slower