private void GenerateSingleSubRule(Rule R, string ReturnType)
{
string fName = GetFName(R.Name);
string body = t(2) + "private " + ReturnType + " " + fName + "()\r\n";
body += t(2) + "{\r\n";
body += t(3) + "//" + R.Name + " => " + R.RuleGrammer + "\r\n";
body += t(3) + "int ti = TokenIndex;\r\n";
body += t(3) + "object[] matches = new object[" + R.RuleParts.Length + "];\r\n";
body += t(3) + "if(";
bool first = true;
int matchIndex = 0;
foreach (string part in R.RuleParts)
{
if (!first)
{
body += " && ";
}
first = false;
if (RuleMap.ContainsKey(part))
{
body += "(matches[" + matchIndex++ + "] = " + GetFName(part) + "()) != null";
RuleReferenceCheck[part].Referenced = true;
}
else
{
string tokenVal = part;
tokenVal = tokenVal.Replace("\"", "\\\"");
body += "(matches[" + matchIndex++ + "] = TokenMatches(\"" + tokenVal + "\")) != null";
}
}
body += ")\r\n";
body += t(3) + "{\r\n";
//body += t(4) + "return GetResult(x => " + R.Action + ", matches);\r\n";
body += t(4) + "Func<object[], " + ReturnType + "> f = x => " + R.Action + ";\r\n";
body += t(4) + "return f(matches);\r\n";
body += t(3) + "}\r\n";
body += t(3) + "TokenIndex = ti;\r\n";
body += t(3) + "return null;\r\n";
body += t(2) + "}\r\n";
RuleFunction rf = new RuleFunction(fName, body, R.Name);
Functions.Add(rf);
}
private void GenerateRule(List <Rule> SubRules, string ReturnType)
{
string fName = GetFName(SubRules[0].Name);
string body = t(2) + "private " + ReturnType + " " + fName + "(int RuleIndex=0)\r\n";
body += t(2) + "{\r\n";
body += t(3) + ReturnType + " matches = null;\r\n";
for (int i = 0; i < SubRules.Count; ++i)
{
Rule r = SubRules[i];
int ruleIndex = i + 1;
string subName = fName + "_" + ruleIndex;
body += t(3) + "//" + r.Name + " => " + r.RuleGrammer + "\r\n";
if (r.RuleParts.Length == 1 && RuleMap.ContainsKey(r.RuleParts[0]))
{
body += t(3) + "if(RuleIndex != " + ruleIndex + " && (matches = " + GetFName(r.RuleParts[0]) + "()) != null)\r\n";
body += t(3) + "{\r\n";
body += t(4) + "Func<object[], " + ReturnType + "> f = x => " + r.Action + ";\r\n";
body += t(4) + "return f(new object[]{ matches });\r\n";
RuleReferenceCheck[r.RuleParts[0]].Referenced = true;
}
else
{
string lhCode = GenerateLHCode(r);
body += t(3) + "if(RuleIndex != " + ruleIndex + (lhCode != null ? " " + lhCode : "") + " && (matches = " + subName + "()) != null)\r\n";
body += t(3) + "{\r\n";
body += t(4) + "return matches;\r\n";
GenerateSubRule(subName, ruleIndex, r, ReturnType, SubRules[0].Name);
}
body += t(3) + "}\r\n";
}
body += t(3) + "return null;\r\n";
body += t(2) + "}\r\n";
RuleFunction func = new RuleFunction(fName, body, SubRules[0].Name);
Functions.Add(func);
}