private void FUNC_LET(Tokens tokens, FuncArgs funcArgs)
{
Token funcNameToken = tokens.GetNextToken();
tokens.ConsumeSpaces();
Token varNameToken = tokens.GetNextToken();
tokens.ConsumeSpaces();
Token equalToken = tokens.GetNextToken();
tokens.ConsumeSpaces();
string val = string.Empty;
if (tokens.InpectNextToken().Value == "(")
{
val = this.Expression(tokens, funcArgs);
}
else
{
val = this.GetFuncArg(tokens.GetNextToken().Value, funcArgs);
}
string varName = varNameToken.Value;
if (funcArgs.ContainsKey(varName))
{
funcArgs[varName] = val;
}
else
{
funcArgs.Add(varName, val);
}
this.Next(tokens, funcArgs);
}
private void FUNC_FUNCTION(Tokens tokens, FuncArgs funcArgs)
{
Token funcToken = tokens.GetNextToken();
tokens.ConsumeSpaces();
Token funcNameToken = tokens.GetNextToken();
if (funcNameToken == null)
{
throw new SyntaxError(string.Format("Function name required near line {0}.", funcToken.Line));
}
tokens.ConsumeSpaces();
Dictionary <string, Token> funcArgList = new Dictionary <string, Token>();
if (tokens.InpectNextToken().Value != "[")
{
while (tokens.Next())
{
Token token = tokens.GetToken();
if (token.Value.Substring(0, 1) != ":")
{
throw new SyntaxError(string.Format("Unexpected token {0} on line {1}.", token.Value, token.Line));
}
if (funcArgList.ContainsKey(token.Value))
{
Token varToken = funcArgList[token.Value];
throw new SyntaxError(string.Format("Variable {0} has already been defined on line {1}.", token.Value, varToken.Line));
}
funcArgList.Add(token.Value, token);
tokens.ConsumeSpaces();
if (tokens.InpectNextToken().Value == "[")
{
break;
}
}
}
tokens.ConsumeSpaces();
Tokens funcStmTokens = new Tokens();
int openBracketCount = 0;
while (tokens.Next())
{
Token token = tokens.GetToken();
funcStmTokens.Add(token);
if (token.Value == "]")
{
openBracketCount--;
if (openBracketCount == 0)
{
break;
}
}
if (token.Value == "[")
{
openBracketCount++;
}
if (token.Value.ToLower() == "func")
{
throw new SyntaxError(string.Format("Func not allowed ", token.Value, token.Line));
}
}
if (tokens.Index() == tokens.Count())
{
Token lastToken = tokens.GetLastToken();
throw new SyntaxError(string.Format("Unexpected end of input near line {0}.", lastToken.Line));
}
tokens.ConsumeSpaces();
funcStmTokens.Remove(0).Remove(funcStmTokens.Count() - 1);
tokens.ConsumeSpaces();
this.functions.Add(funcNameToken.Value.ToLower(), (scopedTokens, scopedFuncArgs) => {
Token localFuncNameToken = scopedTokens.GetNextToken();
FuncArgs localFuncArgs = new FuncArgs();
foreach (KeyValuePair <string, Token> pair in funcArgList)
{
scopedTokens.ConsumeSpaces();
string argName = pair.Value.Value;
Token argValueToken = scopedTokens.GetNextToken();
if (argValueToken != null)
{
string value = argValueToken.Value;
if (value.Substring(0, 1) == ":")
{
if (scopedFuncArgs.ContainsKey(value))
{
value = scopedFuncArgs[value];
}
}
localFuncArgs.Add(argName, value);
}
else
{
throw new SyntaxError(string.Format("Function {0} expects {1} argument(s) near line {2}", localFuncNameToken.Value, funcArgList.Count, localFuncNameToken.Line));
}
}
this.Compile(funcStmTokens, localFuncArgs);
funcStmTokens.Reset();
this.Next(scopedTokens, scopedFuncArgs);
});
this.Next(tokens, funcArgs);
}
private void FUNC_REPEAT(Tokens tokens, FuncArgs funcArgs)
{
FuncArgs scopedFuncArgs = new FuncArgs(funcArgs);
Token funcNameToken = tokens.GetNextToken();
tokens.ConsumeSpaces();
Token funcArgToken = tokens.GetNextToken();
if (funcArgToken == null)
{
throw new SyntaxError(string.Format("Error near line {0}. {1} function expects 1 argument.", funcNameToken.Line, funcNameToken.Value.ToUpper()));
}
int counter = 0;
try{
counter = Convert.ToInt32(this.GetFuncArg(funcArgToken.Value, funcArgs));
}
catch (FormatException e) {
throw new SyntaxError(string.Format("Error near line {0}. {1} function expects a number. {2}", funcNameToken.Line, funcNameToken.Value.ToUpper(), e.Message));
}
tokens.ConsumeSpaces();
Token leftBracket = tokens.GetNextToken();
if (leftBracket == null)
{
throw new SyntaxError(string.Format("Unexpected identifier near line {0}.", funcArgToken.Line));
}
if (leftBracket.Value != "[")
{
throw new SyntaxError(string.Format("Unexpected identifier on line {0}", leftBracket.Line));
}
Tokens repeatStmTokens = new Tokens();
int openBracketCount = 1;
while (tokens.Next())
{
Token token = tokens.GetToken();
if (token.Value == "]")
{
if (openBracketCount == 1)
{
break;
}
else
{
openBracketCount--;
}
}
repeatStmTokens.Add(token);
if (token.Value == "[")
{
openBracketCount++;
}
}
if (tokens.Index() == tokens.Count())
{
Token lastToken = tokens.GetLastToken();
throw new SyntaxError(string.Format("Unexpected end of input near line {0}.", lastToken.Line));
}
tokens.ConsumeSpaces();
string indexName = "";
if (tokens.InpectNextToken() != null)
{
if (tokens.InpectNextToken().Value.Substring(0, 1) == ":")
{
indexName = tokens.GetNextToken().Value;
}
}
for (int i = 0; i < counter; i++)
{
if (!string.IsNullOrEmpty(indexName))
{
scopedFuncArgs.Add(indexName, i.ToString());
}
repeatStmTokens.Reset();
this.Compile(repeatStmTokens, scopedFuncArgs);
scopedFuncArgs.Remove(indexName);
}
this.Next(tokens, funcArgs);
}
private void FUNC_FORWARD(Tokens tokens, FuncArgs funcArgs)
{
this.FUNC_DIRECTION(tokens, 0, funcArgs);
}