private IParsedType ParseGenericType(string typeName) {
token = scanner.NextToken();
if (token.TokenType != Scanner.TokenType.Number) {
error = ParserError.Error(NumberExpected, scanner.CurrentIndex);
return null;
}
var parsedType = new ParsedType(typeName + "`" + token.Text);
token = scanner.NextToken();
if (token.TokenType != Scanner.TokenType.LeftBracket) {
error = ParserError.Error(LeftBracketExpected, scanner.CurrentIndex);
return null;
}
ParseGenericTypeParameter(parsedType);
if (error != ParserError.None) {
return null;
}
if (token.TokenType != Scanner.TokenType.RightBracket) {
error = ParserError.Error(RightBracketExpected, scanner.CurrentIndex);
return null;
}
token = scanner.NextToken();
return parsedType;
}
public IParsedType Parse(string input, out IParserError anError) {
scanner = new Scanner(input);
error = ParserError.None;
var parsedType = ParseTypeAndAssemblyName();
anError = error;
return parsedType;
}
private IParsedType ParseSimpleOrArrayType(string typeName) {
if (token.TokenType == Scanner.TokenType.LeftBracket) {
token = scanner.NextToken();
if (token.TokenType != Scanner.TokenType.RightBracket) {
error = ParserError.Error(RightBracketExpected, scanner.CurrentIndex);
return null;
}
typeName += "[]";
token = scanner.NextToken();
}
return new ParsedType(typeName);
}
private IParsedType ParseType() {
token = scanner.NextToken();
if (token.TokenType != Scanner.TokenType.Name) {
error = ParserError.Error(NameExpected, scanner.CurrentIndex);
return null;
}
string typeName = token.Text;
token = scanner.NextToken();
if (token.TokenType != Scanner.TokenType.Accent) {
return ParseSimpleOrArrayType(typeName);
}
return ParseGenericType(typeName);
}
private IParsedType ParseTypeAndAssemblyName() {
IParsedType parsedType = ParseType();
if (error != ParserError.None) {
return null;
}
ParseAssemblyName(parsedType);
if (error != ParserError.None) {
return null;
}
if (!scanner.EOF || token.TokenType != Scanner.TokenType.EOF) {
error = ParserError.Error(string.Format(UnexpectedToken, token.Text), scanner.CurrentIndex - token.Text.Length);
return null;
}
return parsedType;
}
private void ParseAssemblyName(IParsedType parsedType) {
if (token.TokenType != Scanner.TokenType.Comma) {
return;
}
token = scanner.NextToken();
if (token.TokenType != Scanner.TokenType.Name) {
error = ParserError.Error(NameExpected, scanner.CurrentIndex);
return;
}
parsedType.AssemblyName = token.Text;
token = scanner.NextToken();
}
