public static ConditionBlockNode Create(ContextNode context, ExpressionNode condition, CodeBlockNode trueBlock, CodeBlockNode falseBlock, SequencePoint point)
{
var instance = new ConditionBlockNode(point);
if (!condition.IsGettable || !condition.ExpressionReturnType.IsAssignableTo(context.Parser.Bool))
{
ErrorCode.InvalidCondition.ReportAndThrow(point, "Condition must be a gettable boolean expression");
}
instance.condition = condition;
instance.trueBlock = trueBlock;
instance.falseBlock = falseBlock;
return(instance);
}
public CodeBlockNode AddNode(IAbstractSyntaxTree lexerNode)
{
switch (lexerNode.Type)
{
case Lexer.TokenType.WhileLoop:
return(AddNode(WhileBlock.Parse(this, lexerNode)));
case Lexer.TokenType.ConditionalSentence:
return(AddNode(ConditionBlockNode.Parse(this, lexerNode)));
case Lexer.TokenType.CodeBlockNode:
return(AddNode(CodeBlockNode.Parse(this, lexerNode)));
case Lexer.TokenType.ForLoop:
return(AddNode(ForLoopNode.Parse(this, lexerNode)));
case Lexer.TokenType.ForEachLoop:
return(AddNode(ForEachNode.Parse(this, lexerNode)));
case Lexer.TokenType.StatementWithEndOfLine:
if (lexerNode.Children.Count == 2)
{
return(AddStatement(lexerNode.Children[0]));
}
else
{
//empty statement a.k.a ";"
return(this);
}
case Lexer.TokenType.UnknownNode:
ErrorCode.InvalidStructure.ReportAndThrow(Parser.GetSequencePoint(lexerNode), "Could not parse as a statement");
return(null); //unreachable
default:
ErrorCode.InvalidStructure.ReportAndThrow(Parser.GetSequencePoint(lexerNode), "Unexpected node {0} in while parsing code block", lexerNode.Type);
return(null); //unreachable
}
}
