/*
 * Copyright (c) 2024 Ross Cunniff
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

typedef struct {
    int state;                   // The current state
    int res;                     // The detected token, from TOK_* below
    unsigned int isUnsigned : 1; // The token has an unsigned suffix
    unsigned int isSized : 1;    // The token has a size suffix
    unsigned int isHex : 1;      // The token is e.g. 0x...
    unsigned int isBinary : 1;   // The token is e.g. 0b...
    unsigned int doAdd : 1;      // The input char is part of a token
} TokenState;

// Possible token types distinguished by the state machine
#define TOK_UNKNOWN     1
#define TOK_INTCON      2
#define TOK_NAME        3
#define TOK_FLOATCON    4
#define TOK_DOT         5
#define TOK_DOTDOTDOT   6
#define TOK_LSTRING     7
#define TOK_LCHARCON    8

// State machine functions
void OADL_InitTokenState(TokenState *st);
void OADL_TokenStateMachine(TokenState *st, int ch);