#ifndef RAVA_LEXER_H
#define RAVA_LEXER_H

#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>

typedef enum {
    RAVA_TOKEN_EOF,

    RAVA_TOKEN_KEYWORD_ABSTRACT,
    RAVA_TOKEN_KEYWORD_ASSERT,
    RAVA_TOKEN_KEYWORD_BOOLEAN,
    RAVA_TOKEN_KEYWORD_BREAK,
    RAVA_TOKEN_KEYWORD_BYTE,
    RAVA_TOKEN_KEYWORD_CASE,
    RAVA_TOKEN_KEYWORD_CATCH,
    RAVA_TOKEN_KEYWORD_CHAR,
    RAVA_TOKEN_KEYWORD_CLASS,
    RAVA_TOKEN_KEYWORD_CONST,
    RAVA_TOKEN_KEYWORD_CONTINUE,
    RAVA_TOKEN_KEYWORD_DEFAULT,
    RAVA_TOKEN_KEYWORD_DO,
    RAVA_TOKEN_KEYWORD_DOUBLE,
    RAVA_TOKEN_KEYWORD_ELSE,
    RAVA_TOKEN_KEYWORD_ENUM,
    RAVA_TOKEN_KEYWORD_EXTENDS,
    RAVA_TOKEN_KEYWORD_FINAL,
    RAVA_TOKEN_KEYWORD_FINALLY,
    RAVA_TOKEN_KEYWORD_FLOAT,
    RAVA_TOKEN_KEYWORD_FOR,
    RAVA_TOKEN_KEYWORD_GOTO,
    RAVA_TOKEN_KEYWORD_IF,
    RAVA_TOKEN_KEYWORD_IMPLEMENTS,
    RAVA_TOKEN_KEYWORD_IMPORT,
    RAVA_TOKEN_KEYWORD_INSTANCEOF,
    RAVA_TOKEN_KEYWORD_INT,
    RAVA_TOKEN_KEYWORD_INTERFACE,
    RAVA_TOKEN_KEYWORD_LONG,
    RAVA_TOKEN_KEYWORD_NATIVE,
    RAVA_TOKEN_KEYWORD_NEW,
    RAVA_TOKEN_KEYWORD_PACKAGE,
    RAVA_TOKEN_KEYWORD_PRIVATE,
    RAVA_TOKEN_KEYWORD_PROTECTED,
    RAVA_TOKEN_KEYWORD_PUBLIC,
    RAVA_TOKEN_KEYWORD_RETURN,
    RAVA_TOKEN_KEYWORD_SHORT,
    RAVA_TOKEN_KEYWORD_STATIC,
    RAVA_TOKEN_KEYWORD_STRICTFP,
    RAVA_TOKEN_KEYWORD_SUPER,
    RAVA_TOKEN_KEYWORD_SWITCH,
    RAVA_TOKEN_KEYWORD_SYNCHRONIZED,
    RAVA_TOKEN_KEYWORD_THIS,
    RAVA_TOKEN_KEYWORD_THROW,
    RAVA_TOKEN_KEYWORD_THROWS,
    RAVA_TOKEN_KEYWORD_TRANSIENT,
    RAVA_TOKEN_KEYWORD_TRY,
    RAVA_TOKEN_KEYWORD_VOID,
    RAVA_TOKEN_KEYWORD_VOLATILE,
    RAVA_TOKEN_KEYWORD_WHILE,

    RAVA_TOKEN_LITERAL_TRUE,
    RAVA_TOKEN_LITERAL_FALSE,
    RAVA_TOKEN_LITERAL_NULL,
    RAVA_TOKEN_LITERAL_INTEGER,
    RAVA_TOKEN_LITERAL_LONG,
    RAVA_TOKEN_LITERAL_FLOAT,
    RAVA_TOKEN_LITERAL_DOUBLE,
    RAVA_TOKEN_LITERAL_CHARACTER,
    RAVA_TOKEN_LITERAL_STRING,

    RAVA_TOKEN_IDENTIFIER,

    RAVA_TOKEN_LPAREN,
    RAVA_TOKEN_RPAREN,
    RAVA_TOKEN_LBRACE,
    RAVA_TOKEN_RBRACE,
    RAVA_TOKEN_LBRACKET,
    RAVA_TOKEN_RBRACKET,
    RAVA_TOKEN_SEMICOLON,
    RAVA_TOKEN_COMMA,
    RAVA_TOKEN_DOT,
    RAVA_TOKEN_ELLIPSIS,
    RAVA_TOKEN_AT,
    RAVA_TOKEN_COLONCOLON,

    RAVA_TOKEN_ASSIGN,
    RAVA_TOKEN_GT,
    RAVA_TOKEN_LT,
    RAVA_TOKEN_BANG,
    RAVA_TOKEN_TILDE,
    RAVA_TOKEN_QUESTION,
    RAVA_TOKEN_COLON,
    RAVA_TOKEN_ARROW,
    RAVA_TOKEN_EQUAL,
    RAVA_TOKEN_GE,
    RAVA_TOKEN_LE,
    RAVA_TOKEN_NE,
    RAVA_TOKEN_AND,
    RAVA_TOKEN_OR,
    RAVA_TOKEN_INC,
    RAVA_TOKEN_DEC,
    RAVA_TOKEN_PLUS,
    RAVA_TOKEN_MINUS,
    RAVA_TOKEN_STAR,
    RAVA_TOKEN_SLASH,
    RAVA_TOKEN_AMP,
    RAVA_TOKEN_PIPE,
    RAVA_TOKEN_CARET,
    RAVA_TOKEN_PERCENT,
    RAVA_TOKEN_LSHIFT,
    RAVA_TOKEN_RSHIFT,
    RAVA_TOKEN_URSHIFT,
    RAVA_TOKEN_PLUSASSIGN,
    RAVA_TOKEN_MINUSASSIGN,
    RAVA_TOKEN_STARASSIGN,
    RAVA_TOKEN_SLASHASSIGN,
    RAVA_TOKEN_ANDASSIGN,
    RAVA_TOKEN_ORASSIGN,
    RAVA_TOKEN_CARETASSIGN,
    RAVA_TOKEN_PERCENTASSIGN,
    RAVA_TOKEN_LSHIFTASSIGN,
    RAVA_TOKEN_RSHIFTASSIGN,
    RAVA_TOKEN_URSHIFTASSIGN,

    RAVA_TOKEN_ERROR
} RavaTokenType_e;

typedef union {
    int64_t int_value;
    double float_value;
    char *string_value;
    char char_value;
} RavaLiteralValue_u;

typedef struct {
    RavaTokenType_e type;
    char *lexeme;
    int line;
    int column;
    RavaLiteralValue_u value;
} RavaToken_t;

typedef struct {
    const char *source;
    size_t source_length;
    size_t current;
    size_t start;
    int line;
    int column;
    int start_column;
    char *error_message;
} RavaLexer_t;

RavaLexer_t* rava_lexer_create(const char *source);
void rava_lexer_destroy(RavaLexer_t *lexer);
RavaToken_t* rava_lexer_next_token(RavaLexer_t *lexer);
void rava_token_destroy(RavaToken_t *token);

#endif