Package org.antlr.tool

Class NameSpaceChecker

java.lang.Object

org.antlr.tool.NameSpaceChecker

public class NameSpaceChecker
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
protected Grammar	grammar

Constructor Summary

Constructors

Constructor	Description
NameSpaceChecker(Grammar grammar)

Method Summary

Modifier and Type	Method	Description
void	checkConflicts()
protected void	checkForGlobalScopeTokenConflict(AttributeScope scope)
protected void	checkForLabelConflict(Rule r, org.antlr.runtime.Token label)	Make sure a label doesn't conflict with another symbol.
boolean	checkForLabelTypeMismatch(Rule r, org.antlr.runtime.Token label, int type)	If type of previous label differs from new label's type, that's an error.
protected void	checkForRuleArgumentAndReturnValueConflicts(Rule r)
protected void	checkForRuleDefinitionProblems(Rule r)
void	checkForRuleScopeAttributeConflict(Rule r, Attribute attribute)	Check for collision of a rule-scope dynamic attribute with: arg, return value, rule name itself.
protected void	lookForReferencesToUndefinedSymbols()	If ref to undefined rule, give error at first occurrence.

Methods inherited from class java.lang.Object

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

Field Detail

grammar

protected Grammar grammar

Constructor Detail

NameSpaceChecker

public NameSpaceChecker(Grammar grammar)

Method Detail

checkConflicts

public void checkConflicts()

checkForRuleArgumentAndReturnValueConflicts

protected void checkForRuleArgumentAndReturnValueConflicts(Rule r)

checkForRuleDefinitionProblems

protected void checkForRuleDefinitionProblems(Rule r)

lookForReferencesToUndefinedSymbols

protected void lookForReferencesToUndefinedSymbols()

If ref to undefined rule, give error at first occurrence. Give error if you cannot find the scope override on a rule reference. If you ref ID in a combined grammar and don't define ID as a lexer rule it is an error.

checkForGlobalScopeTokenConflict

protected void checkForGlobalScopeTokenConflict(AttributeScope scope)

checkForRuleScopeAttributeConflict

public void checkForRuleScopeAttributeConflict(Rule r,
                                               Attribute attribute)

Check for collision of a rule-scope dynamic attribute with: arg, return value, rule name itself. Labels are checked elsewhere.

checkForLabelConflict

protected void checkForLabelConflict(Rule r,
                                     org.antlr.runtime.Token label)

Make sure a label doesn't conflict with another symbol. Labels must not conflict with: rules, tokens, scope names, return values, parameters, and rule-scope dynamic attributes defined in surrounding rule.

checkForLabelTypeMismatch

public boolean checkForLabelTypeMismatch(Rule r,
                                         org.antlr.runtime.Token label,
                                         int type)

If type of previous label differs from new label's type, that's an error.