org.erights.e.elang.evm
Class QuasiPatternPatt

java.lang.Object
  |
  +--org.erights.e.elang.evm.ParseNode
        |
        +--org.erights.e.elang.evm.ENode
              |
              +--org.erights.e.elang.evm.Pattern
                    |
                    +--org.erights.e.elang.evm.QuasiPatternPatt

All Implemented Interfaces:

Cloneable, EPrintable, MatchMaker

public class QuasiPatternPatt

extends Pattern

Untamed: BNF: '@' '{' '}'

Not part of a valid E program, but a part of an E parse tree acting as a MatchMaker (as a pattern to be matched against an E pattern).

Author:

Mark S. Miller

Field Summary

private int

myIndex

Fields inherited from class org.erights.e.elang.evm.ENode

Fields inherited from class org.erights.e.elang.evm.ParseNode

NUM_PR, PR_ASSIGN, PR_CALL, PR_COMP, PR_EEXPR, PR_LISTPATT, PR_ORDER, PR_PATTERN, PR_PRIM, PR_START

Constructor Summary

QuasiPatternPatt(SourceSpan optSpan, int index)
Enabled:

Method Summary

protected StaticScope	computeStaticScope() When staticScope() is first requested on a given node, it calls computeStaticScope() to do the actual computation, which is then remembered.
int	index() Enabled:
boolean	matchBind(ConstList args, Object specimen, FlexList bindings) Enabled:
String	optName() Enabled:
void	subPrintOn(TextWriter out, int priority) Enabled:
(package private) void	testMatch(EvalContext ctx, Object specimen, OneArgFunc optEjector) Throws an IncompleteQuasiException rather than indicating match failure
Object	welcome(ETreeVisitor visitor) Enabled:

Methods inherited from class org.erights.e.elang.evm.Pattern

__printOn, substitute

Methods inherited from class org.erights.e.elang.evm.ENode

cleanCopy, copy, getOptPatternMap, getOptScopeMap, getPatternMap, getScopeMap, qbuild, setPatternMap, setScopeMap, staticScope, synEnv

Methods inherited from class org.erights.e.elang.evm.ParseNode

asText, getOptSpan, lnPrintOn, lnPrintOn, matchBind, matchBind, matchBind, printListOn, toString

Methods inherited from class java.lang.Object

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

Field Detail

myIndex

private final int myIndex

Constructor Detail

QuasiPatternPatt

public QuasiPatternPatt(SourceSpan optSpan,
                        int index)

Enabled:

Method Detail

welcome

public Object welcome(ETreeVisitor visitor)

Enabled:

Specified by:

welcome in class ENode

computeStaticScope

protected StaticScope computeStaticScope()

Description copied from class: ENode

When staticScope() is first requested on a given node, it calls computeStaticScope() to do the actual computation, which is then remembered.

Specified by:

computeStaticScope in class ENode

testMatch

void testMatch(EvalContext ctx,
               Object specimen,
               OneArgFunc optEjector)

Throws an IncompleteQuasiException rather than indicating match failure

Specified by:

testMatch in class Pattern

optName

public String optName()

Enabled:

Specified by:

optName in class Pattern

index

public int index()

Enabled:

matchBind

public boolean matchBind(ConstList args,
                         Object specimen,
                         FlexList bindings)

Enabled:

Specified by:

matchBind in interface MatchMaker

Specified by:

matchBind in class ParseNode

subPrintOn

public void subPrintOn(TextWriter out,
                       int priority)
                throws IOException

Enabled:

Specified by:

subPrintOn in class ParseNode

IOException