jfun.jaskell.ast
Class Patterns

java.lang.Object
  jfun.jaskell.ast.Patterns

public final class Patterns
extends java.lang.Object

The class to create different pattern-match patterns.

Author:

Ben Yu Jan 14, 2005

Constructor Summary

Patterns()

Method Summary

static Pattern	buildCons(Pattern[] ptns) Build a list cons pattern.
static Pattern	buildElem(Binding name) Build a pattern for any named element.
static Pattern	buildElem(java.lang.String name) Build a pattern for any named element.
static Pattern	buildList(Pattern[] ptns) Build a pattern for a list/array.
static Pattern	buildNamedPattern(Binding name, Pattern p) Build an aliased pattern.
static Pattern	buildNamedPattern(java.lang.String name, Pattern p) Build an aliased pattern.
static Pattern	buildTuplePattern(MemberPattern[] mps) Build an pattern for a tuple.
static Pattern	buildWildcard() Build a pattern for the wildcard '_'.

Methods inherited from class java.lang.Object

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

Constructor Detail

Patterns

public Patterns()

Method Detail

buildWildcard

public static Pattern buildWildcard()

Build a pattern for the wildcard '_'.

buildElem

public static Pattern buildElem(java.lang.String name)

Build a pattern for any named element.

buildElem

public static Pattern buildElem(Binding name)

Build a pattern for any named element.

buildList

public static Pattern buildList(Pattern[] ptns)

Build a pattern for a list/array. ([a,b,c])

Parameters:

ptns - the pattern for each element seperated by ','.

buildCons

public static Pattern buildCons(Pattern[] ptns)

Build a list cons pattern. (a:b:c_:d)

Parameters:

ptns - the pattern for each item seperated by ':'.

buildNamedPattern

public static Pattern buildNamedPattern(java.lang.String name,
                                        Pattern p)

Build an aliased pattern.

buildNamedPattern

public static Pattern buildNamedPattern(Binding name,
                                        Pattern p)

Build an aliased pattern.

buildTuplePattern

public static Pattern buildTuplePattern(MemberPattern[] mps)

Build an pattern for a tuple.

Parameters:

mps - the patterns for tuple members.