Package org.codehaus.groovy.ast.tools

Class ClosureUtils

java.lang.Object

org.codehaus.groovy.ast.tools.ClosureUtils

public class ClosureUtils
extends java.lang.Object

Handy methods when working with Closure AST data structures.

Constructor Summary

Constructors

Constructor	Description
ClosureUtils()

Method Summary

Modifier and Type	Method	Description
static java.lang.String	convertClosureToSource(ReaderSource readerSource, ClosureExpression expression)	Converts a ClosureExpression into the String source.
static Parameter[]	getParametersSafe(ClosureExpression ce)
static boolean	hasImplicitParameter(ClosureExpression ce)
static boolean	hasSingleCharacterArg(Closure c)	Does the Closure have a single char-like (char or Character) argument.
static boolean	hasSingleStringArg(Closure c)	Does the Closure have a single String argument.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClosureUtils

public ClosureUtils()

Method Detail

convertClosureToSource

public static java.lang.String convertClosureToSource(ReaderSource readerSource,
                                                      ClosureExpression expression)
                                               throws java.lang.Exception

Converts a ClosureExpression into the String source.

Parameters:

readerSource - a source

expression - a closure. Can't be null

Returns:

the source the closure was created from

Throws:

java.lang.IllegalArgumentException - when expression is null

java.lang.Exception - when closure can't be read from source

hasSingleCharacterArg

public static boolean hasSingleCharacterArg(Closure c)

Does the Closure have a single char-like (char or Character) argument.

Parameters:

c - a Closure

Returns:

true if it has exactly one argument and the type is char or Character

hasSingleStringArg

public static boolean hasSingleStringArg(Closure c)

Does the Closure have a single String argument.

Parameters:

c - a Closure

Returns:

true if it has exactly one argument and the type is String

hasImplicitParameter

public static boolean hasImplicitParameter(ClosureExpression ce)

Returns:

true if the ClosureExpression has an implicit 'it' parameter

getParametersSafe

public static Parameter[] getParametersSafe(ClosureExpression ce)

Returns:

the parameters for the ClosureExpression