public override bool Parse(ParseContext context, IAstNode parent) {
_statement = Statement.Create(context, this, _terminatingKeyword);
if (_statement != null) {
if (_statement.Parse(context, this)) {
return base.Parse(context, parent);
}
}
return false;
}
public override bool Parse(ParseContext context, IAstNode parent)
{
_statement = Statement.Create(context, this, _terminatingKeyword);
if (_statement != null)
{
if (_statement.Parse(context, this))
{
return(base.Parse(context, parent));
}
}
return(false);
}
public override bool Parse(ParseContext context, IAstNode parent)
{
TokenStream <RToken> tokens = context.Tokens;
RToken currentToken = tokens.CurrentToken;
context.Scopes.Push(this);
if (!(this is GlobalScope) && currentToken.TokenType == RTokenType.OpenCurlyBrace)
{
this.OpenCurlyBrace = RParser.ParseToken(context, this);
}
while (!tokens.IsEndOfStream())
{
currentToken = context.Tokens.CurrentToken;
switch (currentToken.TokenType)
{
case RTokenType.CloseCurlyBrace:
if (this.OpenCurlyBrace != null)
{
this.CloseCurlyBrace = RParser.ParseToken(context, this);
}
else
{
context.AddError(new ParseError(ParseErrorType.UnexpectedToken, ErrorLocation.Token, currentToken));
context.Tokens.MoveToNextToken();
}
break;
case RTokenType.OpenCurlyBrace:
IScope scope = new Scope(string.Empty);
scope.Parse(context, this);
break;
default:
IStatement statement = Statement.Create(context, this, null);
if (statement != null)
{
if (statement.Parse(context, this))
{
this.statements.Add(statement);
}
else
{
statement = null;
}
}
if (statement == null)
{
if (!context.TextProvider.IsNewLineBeforePosition(context.Tokens.CurrentToken.Start))
{
// try recovering at the next line or past nearest
// semicolon or closing curly brace
tokens.MoveToNextLine(context.TextProvider,
(TokenStream <RToken> ts) => {
return(ts.CurrentToken.TokenType == RTokenType.Semicolon ||
ts.NextToken.TokenType == RTokenType.CloseCurlyBrace);
});
}
else
{
tokens.MoveToNextToken();
}
}
break;
}
if (this.CloseCurlyBrace != null)
{
break;
}
}
context.Scopes.Pop();
if (this.OpenCurlyBrace != null && this.CloseCurlyBrace == null)
{
context.AddError(new MissingItemParseError(ParseErrorType.CloseCurlyBraceExpected, context.Tokens.PreviousToken));
}
// TODO: process content and fill out declared variables
// and functions and get data to the classifier for colorization.
return(base.Parse(context, parent));
}
