kawa.lang
Class ListPat

java.lang.Object
  extended by kawa.lang.Pattern
      extended by kawa.lang.ListPat

public class ListPat
extends Pattern

Match a list whose length in in the range [min_length..max_length].


Field Summary
 
Fields inherited from class kawa.lang.Pattern
matchPatternMethod, typePattern
 
Constructor Summary
ListPat(int len)
           
ListPat(int min, int max)
           
ListPat(int min, int max, java.lang.Object default_val)
           
 
Method Summary
static java.lang.Object[] match(int min, int max, java.lang.Object default_val, java.lang.Object obj)
          Succeeds if obj is a list of length [min..max].
static boolean match(int min, int max, java.lang.Object default_val, java.lang.Object obj, java.lang.Object[] vars, int start_vars)
           
 boolean match(java.lang.Object obj, java.lang.Object[] vars, int start_vars)
          Succeeds if obj is a list of length [min_length..max_length].
 int varCount()
           
 
Methods inherited from class kawa.lang.Pattern
match
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ListPat

public ListPat(int len)

ListPat

public ListPat(int min,
               int max)

ListPat

public ListPat(int min,
               int max,
               java.lang.Object default_val)
Method Detail

match

public static boolean match(int min,
                            int max,
                            java.lang.Object default_val,
                            java.lang.Object obj,
                            java.lang.Object[] vars,
                            int start_vars)

match

public static java.lang.Object[] match(int min,
                                       int max,
                                       java.lang.Object default_val,
                                       java.lang.Object obj)
Succeeds if obj is a list of length [min..max].

Parameters:
obj - the object to match against
Returns:
true iff the match succeeded On success, max_length values from the elements of the list are placed in vars (starting at start_vars); if obj is shorter, missing elements are set to default_value.

match

public boolean match(java.lang.Object obj,
                     java.lang.Object[] vars,
                     int start_vars)
Succeeds if obj is a list of length [min_length..max_length].

Specified by:
match in class Pattern
Parameters:
obj - the object to match against
vars - the "pattern variable" values extracted from obj go here
start_vars - where in vars to strt putting the varCount() values
Returns:
null on failure, or an array of bound pattern variables: max_length values from the elements of the list are placed in the result; if obj is shorter, missing elements are set to default_value.

varCount

public int varCount()
Specified by:
varCount in class Pattern