net.cscott.sdr.calls.ast
Class Condition

java.lang.Object
  net.cscott.sdr.calls.ast.AstNode
      net.cscott.sdr.calls.ast.Condition

public class Condition
extends AstNode

Condition represents an invocation of a Predicate with zero or more arguments. The arguments can be text strings, numbers, or sub-conditions; see the Apply class for the basic idea. String and number arguments are stored as zero-argument conditions.

Version:

$Id: Condition.java,v 1.6 2006-10-17 16:29:05 cananian Exp $

Author:

C. Scott Ananian

Field Summary

List<Condition>	args
String	predicate

Fields inherited from class net.cscott.sdr.calls.ast.AstNode

type

Constructor Summary

Condition(String predicate, List<Condition> args)

Method Summary

<T> Condition	accept(TransformVisitor<T> v, T t)
<RESULT,CLOSURE> RESULT	accept(ValueVisitor<RESULT,CLOSURE> v, CLOSURE cl)
String	argsToString()
Condition	build(String predicate, List<Condition> args) Factory: creates new Condition only if it would differ from this.
Condition	getArg(int n)
Fraction	getNumberArg(int n)
Predicate	getPredicate()
String	getStringArg(int n)
static Condition	makeCondition(String condition)
static Condition	makeCondition(String condition, Condition... subConditions)
static Condition	makeCondition(String condition, Fraction number)

Methods inherited from class net.cscott.sdr.calls.ast.AstNode

toString

Methods inherited from class java.lang.Object

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

Field Detail

predicate

public final String predicate

args

public final List<Condition> args

Constructor Detail

Condition

public Condition(String predicate,
                 List<Condition> args)

Method Detail

accept

public <T> Condition accept(TransformVisitor<T> v,
                            T t)

Specified by:

accept in class AstNode

accept

public <RESULT,CLOSURE> RESULT accept(ValueVisitor<RESULT,CLOSURE> v,
                                      CLOSURE cl)

Specified by:

accept in class AstNode

argsToString

public String argsToString()

Overrides:

argsToString in class AstNode

getPredicate

public Predicate getPredicate()

getArg

public Condition getArg(int n)

getNumberArg

public Fraction getNumberArg(int n)

getStringArg

public String getStringArg(int n)

makeCondition

public static Condition makeCondition(String condition)

makeCondition

public static Condition makeCondition(String condition,
                                      Fraction number)

makeCondition

public static Condition makeCondition(String condition,
                                      Condition... subConditions)

build

public Condition build(String predicate,
                       List<Condition> args)

Factory: creates new Condition only if it would differ from this.