protected virtual void CheckForGlobalScopeTokenConflict(AttributeScope scope)
{
if (grammar.GetTokenType(scope.Name) != Label.INVALID)
{
ErrorManager.GrammarError(ErrorManager.MSG_SYMBOL_CONFLICTS_WITH_GLOBAL_SCOPE,
grammar, null, scope.Name);
}
}
/** Return the scope containing name */
public virtual AttributeScope GetAttributeScope(string name)
{
AttributeScope scope = GetLocalAttributeScope(name);
if (scope != null)
{
return(scope);
}
if (RuleScope != null && RuleScope.GetAttribute(name) != null)
{
scope = RuleScope;
}
return(scope);
}
/** If you label a rule reference, you can access that rule's
* return values as well as any predefined attributes.
*/
public override Attribute GetAttribute(string name)
{
AttributeScope rulePropertiesScope =
RuleLabelScope.grammarTypeToRulePropertiesScope[(int)Grammar.type];
if (rulePropertiesScope.GetAttribute(name) != null)
{
return(rulePropertiesScope.GetAttribute(name));
}
if (referencedRule.ReturnScope != null)
{
return(referencedRule.ReturnScope.GetAttribute(name));
}
return(null);
}
static RuleLabelScope()
{
predefinedRulePropertiesScope = new AttributeScope("RulePredefined", null);
predefinedRulePropertiesScope.AddAttribute("text", null);
predefinedRulePropertiesScope.AddAttribute("start", null);
predefinedRulePropertiesScope.AddAttribute("stop", null);
predefinedRulePropertiesScope.AddAttribute("tree", null);
predefinedRulePropertiesScope.AddAttribute("st", null);
predefinedRulePropertiesScope.IsPredefinedRuleScope = true;
predefinedTreeRulePropertiesScope = new AttributeScope("RulePredefined", null);
predefinedTreeRulePropertiesScope.AddAttribute("text", null);
predefinedTreeRulePropertiesScope.AddAttribute("start", null); // note: no stop; not meaningful
predefinedTreeRulePropertiesScope.AddAttribute("tree", null);
predefinedTreeRulePropertiesScope.AddAttribute("st", null);
predefinedTreeRulePropertiesScope.IsPredefinedRuleScope = true;
predefinedLexerRulePropertiesScope = new AttributeScope("LexerRulePredefined", null);
predefinedLexerRulePropertiesScope.AddAttribute("text", null);
predefinedLexerRulePropertiesScope.AddAttribute("type", null);
predefinedLexerRulePropertiesScope.AddAttribute("line", null);
predefinedLexerRulePropertiesScope.AddAttribute("index", null);
predefinedLexerRulePropertiesScope.AddAttribute("pos", null);
predefinedLexerRulePropertiesScope.AddAttribute("channel", null);
predefinedLexerRulePropertiesScope.AddAttribute("start", null);
predefinedLexerRulePropertiesScope.AddAttribute("stop", null);
predefinedLexerRulePropertiesScope.AddAttribute("int", null);
predefinedLexerRulePropertiesScope.IsPredefinedLexerRuleScope = true;
grammarTypeToRulePropertiesScope =
new AttributeScope[]
{
null,
predefinedLexerRulePropertiesScope, // LEXER
predefinedRulePropertiesScope, // PARSER
predefinedTreeRulePropertiesScope, // TREE PARSER
predefinedRulePropertiesScope // COMBINED
};
}
/** Return the set of keys that collide from
* this and other.
*/
public virtual HashSet <object> Intersection(AttributeScope other)
{
if (other == null || other.Count == 0 || Count == 0)
{
return(null);
}
HashSet <object> inter = new HashSet <object>();
foreach (Attribute attr in attributes)
{
string key = attr.Name;
if (other.GetAttribute(key) != null)
{
inter.Add(key);
}
}
if (inter.Count == 0)
{
return(null);
}
return(inter);
}
static RuleLabelScope()
{
predefinedRulePropertiesScope = new AttributeScope( "RulePredefined", null );
predefinedRulePropertiesScope.AddAttribute( "text", null );
predefinedRulePropertiesScope.AddAttribute( "start", null );
predefinedRulePropertiesScope.AddAttribute( "stop", null );
predefinedRulePropertiesScope.AddAttribute( "tree", null );
predefinedRulePropertiesScope.AddAttribute( "st", null );
predefinedRulePropertiesScope.isPredefinedRuleScope = true;
predefinedTreeRulePropertiesScope = new AttributeScope( "RulePredefined", null );
predefinedTreeRulePropertiesScope.AddAttribute( "text", null );
predefinedTreeRulePropertiesScope.AddAttribute( "start", null ); // note: no stop; not meaningful
predefinedTreeRulePropertiesScope.AddAttribute( "tree", null );
predefinedTreeRulePropertiesScope.AddAttribute( "st", null );
predefinedTreeRulePropertiesScope.isPredefinedRuleScope = true;
predefinedLexerRulePropertiesScope = new AttributeScope( "LexerRulePredefined", null );
predefinedLexerRulePropertiesScope.AddAttribute( "text", null );
predefinedLexerRulePropertiesScope.AddAttribute( "type", null );
predefinedLexerRulePropertiesScope.AddAttribute( "line", null );
predefinedLexerRulePropertiesScope.AddAttribute( "index", null );
predefinedLexerRulePropertiesScope.AddAttribute( "pos", null );
predefinedLexerRulePropertiesScope.AddAttribute( "channel", null );
predefinedLexerRulePropertiesScope.AddAttribute( "start", null );
predefinedLexerRulePropertiesScope.AddAttribute( "stop", null );
predefinedLexerRulePropertiesScope.AddAttribute( "int", null );
predefinedLexerRulePropertiesScope.isPredefinedLexerRuleScope = true;
grammarTypeToRulePropertiesScope =
new AttributeScope[]
{
null,
predefinedLexerRulePropertiesScope, // LEXER
predefinedRulePropertiesScope, // PARSER
predefinedTreeRulePropertiesScope, // TREE PARSER
predefinedRulePropertiesScope // COMBINED
};
}
/** Get the arg, return value, or predefined property for this rule */
public virtual AttributeScope GetLocalAttributeScope(string name)
{
AttributeScope scope = null;
if (ReturnScope != null && ReturnScope.GetAttribute(name) != null)
{
scope = ReturnScope;
}
else if (ParameterScope != null && ParameterScope.GetAttribute(name) != null)
{
scope = ParameterScope;
}
else
{
AttributeScope rulePropertiesScope =
RuleLabelScope.grammarTypeToRulePropertiesScope[(int)Grammar.type];
if (rulePropertiesScope.GetAttribute(name) != null)
{
scope = rulePropertiesScope;
}
}
return(scope);
}
protected virtual void CheckForGlobalScopeTokenConflict( AttributeScope scope )
{
if ( grammar.GetTokenType( scope.Name ) != Label.INVALID )
{
ErrorManager.GrammarError( ErrorManager.MSG_SYMBOL_CONFLICTS_WITH_GLOBAL_SCOPE,
grammar, null, scope.Name );
}
}
public virtual AttributeScope DefineGlobalScope( string name, IToken scopeAction )
{
AttributeScope scope = new AttributeScope( this, name, scopeAction );
scopes[name] = scope;
return scope;
}
public virtual AttributeScope CreateRuleScope( string ruleName, IToken scopeAction )
{
AttributeScope scope = new AttributeScope( this, ruleName, scopeAction );
scope.IsDynamicRuleScope = true;
return scope;
}
public virtual AttributeScope CreateReturnScope( string ruleName, IToken retAction )
{
AttributeScope scope = new AttributeScope( this, ruleName, retAction );
scope.IsReturnScope = true;
return scope;
}
public virtual AttributeScope CreateParameterScope( string ruleName, IToken argAction )
{
AttributeScope scope = new AttributeScope( this, ruleName, argAction );
scope.IsParameterScope = true;
return scope;
}
/** Return the set of keys that collide from
* this and other.
*/
public virtual HashSet<object> Intersection( AttributeScope other )
{
if ( other == null || other.Count == 0 || Count == 0 )
{
return null;
}
HashSet<object> inter = new HashSet<object>();
foreach ( Attribute attr in _attributes )
{
string key = attr.Name;
if ( other.GetAttribute( key ) != null )
{
inter.Add( key );
}
}
if ( inter.Count == 0 )
{
return null;
}
return inter;
}