public ExternFunctionToken(Token parent, Scope scope, IEnumerable<Token> tokens, Token dataTypeToken, IdentifierToken nameToken, BracketsToken argsToken)
: base(parent, scope, new Span(tokens.First().Span.Start, tokens.Last().Span.End))
{
_tokens = tokens.ToArray();
_dataTypeToken = dataTypeToken;
_nameToken = nameToken;
_argsToken = argsToken;
}
public FunctionCallToken(Token parent, Scope scope, IdentifierToken nameToken, BracketsToken argsToken)
: base(parent, scope, new Span(nameToken.Span.Start, argsToken.Span.End))
{
_nameToken = nameToken;
_argsToken = argsToken;
_nameToken.Parent = this;
_argsToken.Parent = this;
}
private DefineToken(Token parent, Scope scope, IEnumerable<Token> tokens, IdentifierToken nameToken, BracketsToken argsToken, IEnumerable<Token> bodyTokens)
: base(parent, scope, new Span(tokens.First().Span.Start, tokens.Last().Span.End))
{
_tokens = tokens.ToArray();
foreach (var token in _tokens) token.Parent = this;
_nameToken = nameToken;
_argsToken = argsToken;
_bodyTokens = bodyTokens.ToArray();
if (_argsToken == null && _bodyTokens.Length == 1 &&
(_bodyTokens[0].GetType() == typeof(DataTypeToken) || _bodyTokens[0].GetType() == typeof(DataTypeKeywordToken)))
{
_isDataType = true;
//File.AddDefinedDataType(_nameToken.Text);
}
}
public FunctionToken(Token parent, Scope scope, IEnumerable<Token> tokens, Token dataTypeToken, IdentifierToken nameToken, BracketsToken argsToken, BracesToken scopeToken)
: base(parent, scope, new Span(tokens.First().Span.Start, tokens.Last().Span.End))
{
_tokens = tokens.ToArray();
_dataTypeToken = dataTypeToken;
if (_dataTypeToken != null) _dataTypeToken.Parent = this;
_nameToken = nameToken;
_nameToken.Parent = this;
_argsToken = argsToken;
_argsToken.Parent = this;
_scopeToken = scopeToken;
_scopeToken.Parent = this;
foreach (var tok in _tokens) tok.Parent = this;
}
public static FunctionToken TryParse(Token parent, Scope scope, Token dataTypeToken, IdentifierToken nameToken)
{
if ((scope.Hint & ScopeHint.SuppressFunctionDefinition) != 0) return null;
var startPos = scope.File.Position;
var tokens = new List<Token>();
if (dataTypeToken != null) tokens.Add(dataTypeToken);
tokens.Add(nameToken);
var argsScope = scope;
argsScope.Hint |= ScopeHint.FunctionArgs;
var token = scope.File.ParseSingleToken(parent, argsScope);
if (token == null || token.GetType() != typeof(BracketsToken))
{
scope.File.Position = startPos;
return null;
}
var argsToken = token as BracketsToken;
tokens.Add(argsToken);
var innerScope = scope;
innerScope.Hint |= ScopeHint.SuppressFunctionDefinition | ScopeHint.NotOnRoot;
var scopeToken = null as BracesToken;
var optionsTokens = new List<Token>();
var done = false;
while (!done)
{
token = scope.File.ParseSingleToken(parent, innerScope);
if (token == null)
{
scope.File.Position = startPos;
return null;
}
if (token.GetType() == typeof(BracesToken))
{
tokens.Add(token);
scopeToken = token as BracesToken;
done = true;
}
else if (token.BreaksStatement)
{
scope.File.Position = startPos;
return null;
}
else
{
tokens.Add(token);
optionsTokens.Add(token);
}
}
return new FunctionToken(parent, scope, tokens, dataTypeToken, nameToken, argsToken, scopeToken);
}
public static VariableDeclarationToken TryParse(Token parent, Scope scope, Token dataTypeToken, IdentifierToken nameToken)
{
if (scope.Hint.HasFlag(ScopeHint.SuppressVarDecl)) return null;
var startPos = scope.File.Position;
var tokens = new List<Token>();
tokens.Add(dataTypeToken);
tokens.Add(nameToken);
var nameTokens = new List<IdentifierToken>();
nameTokens.Add(nameToken);
if (scope.Hint.HasFlag(ScopeHint.FunctionArgs))
{
var token = scope.File.ParseSingleToken(parent, scope);
if (token == null || (token.GetType() != typeof(StatementEndToken) && token.GetType() != typeof(DelimiterToken)))
{
scope.File.Position = startPos;
return null;
}
tokens.Add(token);
}
else
{
var done = false;
var needDelim = true;
while (!done)
{
var token = scope.File.ParseSingleToken(parent, scope);
if (token == null)
{
scope.File.Position = startPos;
return null;
}
if (token.GetType() == typeof(StatementEndToken))
{
done = true;
tokens.Add(token);
}
else if (needDelim && token.GetType() == typeof(DelimiterToken))
{
needDelim = false;
tokens.Add(token);
}
else if (!needDelim && token.GetType() == typeof(IdentifierToken))
{
needDelim = true;
tokens.Add(token);
nameTokens.Add(token as IdentifierToken);
}
else if (needDelim && token.GetType() == typeof(ArrayBracesToken))
{
// This is an array variable.
tokens.Add(token);
}
else
{
scope.File.Position = startPos;
return null;
}
}
}
return new VariableDeclarationToken(parent, scope, tokens, dataTypeToken, nameTokens);
}