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// SSPHH/Fluxions/Unicornfish/Viperfish/Hatchetfish/Sunfish/KASL/GLUT Extensions
// Copyright (C) 2017 Jonathan Metzgar
// All rights reserved.
//
// This program is free software : you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.If not, see <https://www.gnu.org/licenses/>.
//
// For any other type of licensing, please contact me at [email protected]
#ifndef KASL_HPP
#define KASL_HPP
 
#include <map>
#include <string>
#include <vector>
 
//#ifndef KASL_STATIC
//#ifdef KASLDLLEXPORTS
//#define KASL_API __declspec(dllexport) 
//#else
//#define KASL_API __declspec(dllimport) 
//#endif
//#else
//#define KASL_API
//#endif
 
namespace KASL
{
    using namespace std;
    using StringType = std::string;
 
    enum class TokenType {
        TT0_NOTHING,
        TT0_CHAR,
        TT0_SPACE,
        TT0_TAB,
        TT0_NEWLINE,
        TT0_DIGIT,
        TT0_ALPHA,
        TT0_CNTRL,
        TT0_PUNCT,
        TT1_EXCLAMATION_POINT,
        TT1_DOUBLE_QUOTE,
        TT1_NUMBER_SIGN,
        TT1_DOLLAR_SIGN,
        TT1_PERCENT_SIGN,
        TT1_AMPERSAND,
        TT1_SINGLE_QUOTE,
        TT1_LPAREN,
        TT1_RPAREN,
        TT1_ASTERICK,
        TT1_PLUS_SIGN,
        TT1_COMMA,
        TT1_DASH,
        TT1_PERIOD,
        TT1_FORWARD_SLASH,
        TT1_COLON,
        TT1_SEMICOLON,
        TT1_LESS_THAN_SIGN,
        TT1_EQUAL_SIGN,
        TT1_GREATER_THAN_SIGN,
        TT1_QUESTION_MARK,
        TT1_AT_SYMBOL,
        TT1_LBRACKET,
        TT1_BACK_SLASH,
        TT1_RBRACKET,
        TT1_CARET,
        TT1_UNDERSCORE,
        TT1_GRAVE_ACCENT,
        TT1_LBRACE,
        TT1_VERTICAL_BAR,
        TT1_RBRACE,
        TT1_TILDE,
        TT2_ID,
        TT2_STRING,
        TT2_DOUBLE,
        TT2_INTEGER,
        TT2_HEXINTEGER
    };
 
    struct LexerToken
    {
        TokenType type;
 
        size_t start;
        size_t length;
        char *cptr;
    };
 
    struct LexerState
    {
        StringType buffer;
        vector<LexerToken> tokens;
 
        LexerToken tmptoken;
        LexerToken *lasttoken;
        bool eatChar;
    };
 
    struct Token
    {
        TokenType type;
        string sval;
        int ival;
        double dval;
 
        bool IsInteger() const { return type == TokenType::TT2_INTEGER; }
        bool IsDouble() const { return type == TokenType::TT2_DOUBLE; }
        bool IsString() const { return type == TokenType::TT2_STRING; }
        bool IsIdentifier() const { return type == TokenType::TT2_ID; }
        bool IsStringOrIdentifier() const { return type == TokenType::TT2_STRING || type == TokenType::TT2_ID; }
        bool IsIntegerOrDouble() const { return type == TokenType::TT2_INTEGER || type == TokenType::TT2_DOUBLE; }
        bool IsType(TokenType which) const { return type == which; }
    };
 
    using LexReplacementType = tuple<TokenType, TokenType, StringType::value_type>;
    using TokenVector = vector<Token>;
 
    ostream & operator << (ostream & ostr, const TokenType & type);
    size_t lex_init(LexerState &ls);
    size_t lex(LexerState &ls, const StringType &inputStr, int level = 0);
    void lex_print(LexerState &ls);
    void lex_replace(LexerState &ls, LexerState &output, const vector<LexReplacementType> &replacements);
    size_t lex_scan_number(StringType::value_type *cptr, LexerToken &token);
    size_t lex_scan_string(StringType::value_type *cptr, LexerToken &token);
    size_t lex_tokens(LexerState &ls, vector<Token> & symbols);
    void lex_tokens_print(vector<Token> &tokens);
    size_t lex_quick_parse(const StringType &inputStr, int level, const vector<LexReplacementType> &replacements, TokenVector &tokens);
    size_t lex_quick_parse(const StringType &inputStr, TokenVector &tokens);
    size_t lex_quick_l2_parse(const StringType &inputStr, TokenVector &tokens);
    size_t lex_quick_l3_parse(const StringType &inputStr, TokenVector &tokens);
    string TokenVectorJoin(const TokenVector tokens, const string &separator);
 
    class VariableList
    {
    private:
        string blankString;
    public:
        VariableList();
        ~VariableList();
 
        map<string, KASL::Token> variables;
        double get_var_double(const string &name) const;
        int get_var_integer(const string &name) const;
        const string &get_var_string(const string &name) const;
        void set_var(const string &name, double dval);
        void set_var(const string &name, int ival);
        void set_var(const string &name, const string &sval);
        bool is_var(const string &name) const;
        map<string, KASL::Token>::const_iterator get_var(const string &name) const;
        map<string, KASL::Token>::const_iterator get_var_end() const;
    };
}
 
#endif