public virtual Statement VisitResourceUse(ResourceUse resourceUse)
{
if (resourceUse == null) return null;
resourceUse.ResourceAcquisition = (Statement)this.Visit(resourceUse.ResourceAcquisition);
resourceUse.Body = this.VisitBlock(resourceUse.Body);
return resourceUse;
}
private ResourceUse ParseUsing(TokenSet followers){
ResourceUse resourceUse = new ResourceUse();
resourceUse.SourceContext = this.scanner.CurrentSourceContext;
Debug.Assert(this.currentToken == Token.Using);
this.GetNextToken();
SourceContext sctx = this.scanner.CurrentSourceContext;
if (Parser.IdentifierOrNonReservedKeyword[this.currentToken]){
this.HandleError(Error.SyntaxError, "(");
this.GetNextToken();
if (this.currentToken == Token.Semicolon)
this.GetNextToken();
this.SkipTo(followers);
return null;
}
this.Skip(Token.LeftParenthesis);
resourceUse.ResourceAcquisition = this.ParseExpressionStatementOrDeclaration(false, followers|Token.RightParenthesis|Parser.StatementStart, false, false);
this.ParseBracket(sctx, Token.RightParenthesis, followers|Parser.StatementStart, Error.ExpectedRightParenthesis);
Block b = this.ParseStatementAsBlock(followers);
resourceUse.Body = b;
if (b != null)
resourceUse.SourceContext.EndPos = b.SourceContext.EndPos;
return resourceUse;
}
public override Statement VisitResourceUse(ResourceUse resourceUse)
{
if (resourceUse == null) return null;
return base.VisitResourceUse((ResourceUse)resourceUse.Clone());
}
public EventingVisitor(Action<ResourceUse> visitResourceUse) { VisitedResourceUse += visitResourceUse; } public event Action<ResourceUse> VisitedResourceUse; public override Statement VisitResourceUse(ResourceUse resourceUse) { if (VisitedResourceUse != null) VisitedResourceUse(resourceUse); return base.VisitResourceUse(resourceUse); }
