public static IADNode statement()
{
var nextToken = MainFSM.PeekNextToken();
IADNode result = null;
switch (nextToken.Type)
{
case TokenType.longType:
var list = new ADVariableDeclarations();
StatementHelpers.VariableDeclaration(ref list);
list.Variables.Reverse();
result = list;
break;
case TokenType.starType:
result = new ADStatementExpression {
Expression = PrecedenceSyntaxAnalysis.Precedence(TokenType.semiType)
};
if (MainFSM.GetNextToken().Type != TokenType.semiType)
{
SyntaxError("Byl ocekavan znak \';\'");
}
break;
case TokenType.idType:
case TokenType.incrType:
case TokenType.decrType:
if (MainFSM.PeekNextToken(2).Type == TokenType.leftRBType)
{
var fceToken = MainFSM.GetNextToken();
result = fce_call(fceToken.Attribute);
if (MainFSM.GetNextToken().Type != TokenType.semiType)
{
SyntaxError("Byl ocekavan znak \';\'");
}
}
else
{
result = new ADStatementExpression {
Expression = PrecedenceSyntaxAnalysis.Precedence(TokenType.semiType)
};
if (MainFSM.GetNextToken().Type != TokenType.semiType)
{
SyntaxError("Byl ocekavan znak \';\'");
}
}
break;
case TokenType.ifType:
result = StatementHelpers.Condition();
break;
case TokenType.forType:
result = StatementHelpers.ForLoop();
break;
case TokenType.whileType:
result = StatementHelpers.WhileLoop();
break;
case TokenType.doType:
result = StatementHelpers.DoWhileLoop();
break;
case TokenType.returnType:
result = StatementHelpers.Return();
break;
case TokenType.breakType:
result = StatementHelpers.Break();
break;
case TokenType.continueType:
result = StatementHelpers.Continue();
break;
case TokenType.leftCBType:
result = StatementHelpers.InnerStatements();
break;
default:
SyntaxError("Byl ocekavan jeden z nasledujici klicovych slov nebo znaku: long, *, identifikator, if, for, while, do, return, break, continue");
break;
}
return(result);
}
public static void PrintStatementExpression(ADStatementExpression expr, string tab)
{
Console.WriteLine($"{tab}|- Expression");
PrintExpression(expr.Expression, tab + '\t');
}
