kawa.lang
Class ListPat
java.lang.Object
kawa.lang.Pattern
kawa.lang.ListPat
public class ListPat
- extends Pattern
Match a list whose length in in the range [min_length..max_length].
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 java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ListPat
public ListPat(int len)
ListPat
public ListPat(int min,
int max)
ListPat
public ListPat(int min,
int max,
java.lang.Object default_val)
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 againstvars
- the "pattern variable" values extracted from obj go herestart_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