// _____________________________
// <value> : Literal|<function-invokation>
private GrammarNonTerminalBody ParseNonTerminalBody(ref LexerStringReader reader, GrammarNonTerminal nonTerminal)
{
var body = new GrammarNonTerminalBody();
var bodyString = new string(reader.ReadTillNewLine());
while (!reader.IsEndOfQuery())
{
reader.ReadTillEndOfWhitespace();
if (reader.CurrentChar != OrSeparator && reader.CurrentChar != Assign)
{
break;
}
bodyString += new string(reader.ReadTillNewLine());
}
var orConditions = bodyString.Split(OrSeparator, StringSplitOptions.RemoveEmptyEntries);
foreach (var operandSplitItem in orConditions)
{
var operand = new GrammarNonTerminalBody.OrConditionOperand();
var blockItems = operandSplitItem.Split(' ', StringSplitOptions.RemoveEmptyEntries);
foreach (var blockItem in blockItems)
{
var bodyItem = ParseNonTerminalBodyItem(blockItem.Trim());
if (bodyItem is GrammarNonTerminalUsage nonTerminalUsage &&
ReferenceEquals(nonTerminal, nonTerminalUsage.Impl))
{
operand.IsRecursive = true;
}
operand.Add(bodyItem);
}
body.OrConditionOperands.Add(operand);
}
return(body);
}
public GrammarNonTerminalUsage(string name, GrammarNonTerminal impl)
{
Name = name;
Impl = impl;
}