public override LuaStatement Parse(INextAwareEnumerator<Token> reader, IParserContext context)
{
reader.VerifyExpectedTokenAndMoveNext(Keywords.Function);
if (reader.Next.Value == LuaToken.Colon)
{
reader.MoveNext();
reader.MoveNext();
}
var functionName = reader.GetAndMoveNext();
reader.VerifyExpectedToken(LuaToken.LeftBracket);
var argumentNames = new List<string>();
reader.MoveNext();
while (reader.Current.Value != LuaToken.RightBracket)
{
argumentNames.Add(reader.Current.Value);
reader.MoveNext();
reader.VerifyExpectedToken(LuaToken.Comma, LuaToken.RightBracket);
if (reader.Current.Value == LuaToken.RightBracket)
break;
reader.MoveNext();
}
reader.VerifyExpectedTokenAndMoveNext(LuaToken.RightBracket);
var statementsParser = new StatementBlockParser(Keywords.End);
var body = statementsParser.ParseBlock(reader, context);
return new FunctionDeclarationStatement(functionName.Value,argumentNames,body);
}
public LuaStatement Parse(INextAwareEnumerator <Token> reader, IParserContext context)
{
reader.VerifyExpectedTokenAndMoveNext(Keywords.Function);
if (reader.Next.Value == LuaToken.Colon)
{
reader.MoveNext();
reader.MoveNext();
}
var functionName = reader.GetAndMoveNext();
reader.VerifyExpectedToken(LuaToken.LeftBracket);
var argumentNames = new List <string>();
reader.MoveNext();
while (reader.Current.Value != LuaToken.RightBracket)
{
argumentNames.Add(reader.Current.Value);
reader.MoveNext();
reader.VerifyExpectedToken(LuaToken.Comma, LuaToken.RightBracket);
if (reader.Current.Value == LuaToken.RightBracket)
{
break;
}
reader.MoveNext();
}
reader.VerifyExpectedTokenAndMoveNext(LuaToken.RightBracket);
var statementsParser = new StatementBlockParser(Keywords.End);
var body = statementsParser.ParseBlock(reader, context);
return(new FunctionDeclarationStatement(functionName.Value, argumentNames, body));
}
public override LuaStatement Parse(INextAwareEnumerator<Token> reader, IParserContext context)
{
reader.VerifyExpectedTokenAndMoveNext(Keywords.While);
var conditionExpression = SyntaxParser.ReadExpression(reader, context);
reader.VerifyExpectedTokenAndMoveNext(Keywords.Do);
var blockParser = new StatementBlockParser(Keywords.End);
var bodyBlock = blockParser.ParseBlock(reader, context);
return new WhileStatement(conditionExpression, bodyBlock);
}
public LuaStatement Parse(INextAwareEnumerator <Token> reader, IParserContext context)
{
reader.VerifyExpectedTokenAndMoveNext(Keywords.While);
var conditionExpression = SyntaxParser.ReadExpression(reader, context);
reader.VerifyExpectedTokenAndMoveNext(Keywords.Do);
var blockParser = new StatementBlockParser(Keywords.End);
var bodyBlock = blockParser.ParseBlock(reader, context);
return(new WhileStatement(conditionExpression, bodyBlock));
}
public override LuaStatement Parse(INextAwareEnumerator<Token> reader, IParserContext context)
{
reader.VerifyExpectedTokenAndMoveNext(Keywords.For);
var scope = context.AcquireScope();
reader.VerifyIsIdentifier();
var forVariableName = reader.GetAndMoveNext();
reader.VerifyExpectedTokenAndMoveNext(LuaToken.EqualsSign);
var conditionsParser = new ExpressionListParser();
var conditions = conditionsParser.Parse(reader, context).ToList();
reader.VerifyExpectedTokenAndMoveNext(Keywords.Do);
var statementsParser = new StatementBlockParser(Keywords.End);
var bodyBlock = statementsParser.ParseBlock(reader, context);
context.ReleaseScope(scope);
return new ForStatement(conditions,bodyBlock);
}
public override LuaStatement Parse(INextAwareEnumerator<Token> reader, IParserContext context)
{
StatementBlock elseBlock = null;
reader.VerifyExpectedTokenAndMoveNext(Keywords.If);
var conditionExpression = SyntaxParser.ReadExpression(reader, context);
reader.VerifyExpectedTokenAndMoveNext(Keywords.Then);
var ifBlockParser = new StatementBlockParser(Keywords.End, Keywords.Else);
Token delimiterToken;
var ifBlock = ifBlockParser.ParseBlock(reader, context, out delimiterToken);
if (delimiterToken.Value == Keywords.Else)
{
var elseBlockParser = new StatementBlockParser(Keywords.End);
elseBlock = elseBlockParser.ParseBlock(reader, context);
}
return new IfStatement(conditionExpression, ifBlock, elseBlock);
}
public LuaStatement Parse(INextAwareEnumerator <Token> reader, IParserContext context)
{
reader.VerifyExpectedTokenAndMoveNext(Keywords.For);
var scope = context.AcquireScope();
reader.VerifyIsIdentifier();
var forVariableName = reader.GetAndMoveNext();
reader.VerifyExpectedTokenAndMoveNext(LuaToken.EqualsSign);
var conditionsParser = new ExpressionListParser();
var conditions = conditionsParser.Parse(reader, context).ToList();
reader.VerifyExpectedTokenAndMoveNext(Keywords.Do);
var statementsParser = new StatementBlockParser(Keywords.End);
var bodyBlock = statementsParser.ParseBlock(reader, context);
context.ReleaseScope(scope);
return(new ForStatement(conditions, bodyBlock));
}
public LuaStatement Parse(INextAwareEnumerator <Token> reader, IParserContext context)
{
StatementBlock elseBlock = null;
reader.VerifyExpectedTokenAndMoveNext(Keywords.If);
var conditionExpression = SyntaxParser.ReadExpression(reader, context);
reader.VerifyExpectedTokenAndMoveNext(Keywords.Then);
var ifBlockParser = new StatementBlockParser(Keywords.End, Keywords.Else);
Token delimiterToken;
var ifBlock = ifBlockParser.ParseBlock(reader, context, out delimiterToken);
if (delimiterToken.Value == Keywords.Else)
{
var elseBlockParser = new StatementBlockParser(Keywords.End);
elseBlock = elseBlockParser.ParseBlock(reader, context);
}
return(new IfStatement(conditionExpression, ifBlock, elseBlock));
}