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#ifndef SCANNER_H
#define SCANNER_H
typedef enum {
/* Single-character tokens. */
TOKEN_LEFT_PAREN,
TOKEN_RIGHT_PAREN,
TOKEN_LEFT_BRACE,
TOKEN_RIGHT_BRACE,
TOKEN_COMMA,
TOKEN_DOT,
TOKEN_MINUS,
TOKEN_PLUS,
TOKEN_SEMICOLON,
TOKEN_SLASH,
TOKEN_STAR,
/* One || two character tokens. */
TOKEN_BANG,
TOKEN_BANG_EQUAL,
TOKEN_EQUAL,
TOKEN_EQUAL_EQUAL,
TOKEN_GREATER,
TOKEN_GREATER_EQUAL,
TOKEN_LESS,
TOKEN_LESS_EQUAL,
/* Literals. */
TOKEN_IDENTIFIER,
TOKEN_STRING,
TOKEN_NUMBER,
/* Keywords. */
TOKEN_AND,
TOKEN_CLASS,
TOKEN_ELSE,
TOKEN_FALSE,
TOKEN_FOR,
TOKEN_FUN,
TOKEN_IF,
TOKEN_NIL,
TOKEN_OR,
TOKEN_PRINT,
TOKEN_RETURN,
TOKEN_SUPER,
TOKEN_THIS,
TOKEN_TRUE,
TOKEN_VAR,
TOKEN_WHILE,
TOKEN_ERROR,
TOKEN_EOF
} TokenType;
typedef struct {
TokenType type;
const char *start;
int length;
int line;
} Token;
void initScanner(const char *source);
Token scanToken();
#endif
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