org.erights.e.elang.evm
Class MatchBindExpr

java.lang.Object
  |
  +--org.erights.e.elang.evm.ParseNode
        |
        +--org.erights.e.elang.evm.ENode
              |
              +--org.erights.e.elang.evm.EExpr
                    |
                    +--org.erights.e.elang.evm.MatchBindExpr
All Implemented Interfaces:
Cloneable, EPrintable, MatchMaker

public class MatchBindExpr
extends EExpr

Safe: BNF: eExpr "=~" pattern

Tests if the expression matches the pattern

Author:
Mark S. Miller

Field Summary
private  NounExpr[] myOptBound
           
private  Pattern myPattern
           
private  EExpr mySpecimen
           
 
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
MatchBindExpr(SourceSpan optSpan, EExpr specimen, Pattern pattern)
          Enabled:
MatchBindExpr(SourceSpan optSpan, EExpr specimen, Pattern pattern, NounExpr[] bound)
          Enabled:
 
Method Summary
private  void breakAll(EvalContext ctx, Throwable reason)
           
protected  StaticScope computeStaticScope()
          When staticScope() is first requested on a given node, it calls computeStaticScope() to do the actual computation, which is then remembered.
 boolean matchBind(ConstList args, Object specimen, FlexList bindings)
          Enabled:
 Pattern pattern()
          Enabled:
 EExpr specimen()
          Enabled:
protected  Object subEval(EvalContext ctx, boolean forValue)
          The recursive part that does the work
 void subPrintOn(TextWriter out, int priority)
          Enabled:
 Object welcome(ETreeVisitor visitor)
          Enabled:
 
Methods inherited from class org.erights.e.elang.evm.EExpr
__printOn, appendAllTo, appendTo, eval, eval, evalBool, printAsBlockOn, substitute, transform
 
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

mySpecimen

private final EExpr mySpecimen

myPattern

private final Pattern myPattern

myOptBound

private final NounExpr[] myOptBound
Constructor Detail

MatchBindExpr

public MatchBindExpr(SourceSpan optSpan,
                     EExpr specimen,
                     Pattern pattern)
Enabled:


MatchBindExpr

public MatchBindExpr(SourceSpan optSpan,
                     EExpr specimen,
                     Pattern pattern,
                     NounExpr[] bound)
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

subEval

protected Object subEval(EvalContext ctx,
                         boolean forValue)
Description copied from class: EExpr
The recursive part that does the work

Specified by:
subEval in class EExpr

breakAll

private void breakAll(EvalContext ctx,
                      Throwable reason)

matchBind

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

Specified by:
matchBind in interface MatchMaker
Specified by:
matchBind in class ParseNode

pattern

public Pattern pattern()
Enabled:


subPrintOn

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

Specified by:
subPrintOn in class ParseNode
IOException

specimen

public EExpr specimen()
Enabled:



comments?