diva.sketch.parser2d
Class BasicRule
java.lang.Object
|
+--diva.sketch.parser2d.BasicRule
- public class BasicRule
- extends java.lang.Object
- implements Rule
Basic rule is the implementation of the rule interface that
is filled in declaratively by a user-defined grammar. This
rule implementation has a type, which is equivalent to the
left side of a production. The right side consists of a
root object and a set of relative objects which
are spatially related to the root object under a system of
constraints.
A rule tries to find sets of constituents within its input
constituent set that match the criteria of types and spatial
constraints specified in the constructor. It returns a list of all
possible interpretations of the input constituent set where there
is a match.
- Version:
- $Revision: 1.1 $
Constructor Summary |
BasicRule(java.lang.String ruleType,
java.lang.String rootName,
java.lang.String rootType,
java.lang.String[] relativeNames,
java.lang.String[] relativeTypes,
RelationConstraint[] constraints)
Construct a new basic rule with the given LHS and RHS
structure. |
Method Summary |
static void |
debug(java.lang.String s)
Debugging output. |
java.lang.String |
getRuleType()
Return the type of the LHS. |
java.util.Iterator |
matchRule(ConstituentSet in)
Return an iterator over the possible applications of this rule
to the given constituent set. |
java.lang.String |
toString()
Print out the contents of this rule. |
Methods inherited from class java.lang.Object |
,
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
wait,
wait,
wait |
BasicRule
public BasicRule(java.lang.String ruleType,
java.lang.String rootName,
java.lang.String rootType,
java.lang.String[] relativeNames,
java.lang.String[] relativeTypes,
RelationConstraint[] constraints)
- Construct a new basic rule with the given LHS and RHS
structure. The structure is a declarative set of relations
that need to be satisfied for a match to occur. A "root" type
is specified, as well as a set of adjacent and contained
constituent types and their locations relative to the root.
getRuleType
public java.lang.String getRuleType()
- Return the type of the LHS.
- Specified by:
- getRuleType in interface Rule
debug
public static void debug(java.lang.String s)
- Debugging output.
matchRule
public java.util.Iterator matchRule(ConstituentSet in)
- Return an iterator over the possible applications of this rule
to the given constituent set.
- Specified by:
- matchRule in interface Rule
toString
public java.lang.String toString()
- Print out the contents of this rule.
- Overrides:
- toString in class java.lang.Object