// - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static FunctionParser()
{
FirstFunction = new TokenSet(TokenType.Sine | TokenType.Cosine | TokenType.Tangent);
FirstFactor = FirstFunction + new TokenSet(TokenType.Variable | TokenType.OpenParen);
FirstFactorPrefix = FirstFactor + TokenType.Constant;
FirstUnaryExp = FirstFactorPrefix + TokenType.Minus;
FirstExpExp = new TokenSet(FirstUnaryExp);
FirstMultExp = new TokenSet(FirstUnaryExp);
_firstAddExp = new TokenSet(FirstUnaryExp);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
static FunctionParser()
{
FirstFunction = new TokenSet(TokenType.Sine | TokenType.Cosine | TokenType.Tangent);
FirstFactor = FirstFunction + new TokenSet(TokenType.Variable | TokenType.OpenParen);
FirstFactorPrefix = FirstFactor + TokenType.Constant;
FirstUnaryExp = FirstFactorPrefix + TokenType.Minus;
FirstExpExp = new TokenSet(FirstUnaryExp);
FirstMultExp = new TokenSet(FirstUnaryExp);
_firstAddExp = new TokenSet(FirstUnaryExp);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/// <summary>
/// Check if the CurrentToken is a member of a set Token types
/// </summary>
/// <param name="tokens">The set of Token types to check against</param>
/// <returns>
/// true if the CurrentToken's type is in the set
/// false if it is not
/// </returns>
private static bool Check(TokenSet tokens) => tokens.Contains(_currentToken.Type);
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/// <summary>
/// Check if the CurrentToken is a member of a set Token types
/// </summary>
/// <param name="tokens">The set of Token types to check against</param>
/// <returns>
/// true if the CurrentToken's type is in the set
/// false if it is not
/// </returns>
private static bool Check(TokenSet tokens) => tokens.Contains(_currentToken.Type);
