/* ----------------------------------------------------------------------- *
 *
 *   Copyright 2018 The NASM Authors - All Rights Reserved
 *   See the file AUTHORS included with the NASM distribution for
 *   the specific copyright holders.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following
 *   conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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/*
 * Wrappers around stdscan() and evaluate() for computing expressions
 * directly from strings.
 */

#ifndef NASM_EVALSTR_H
#define NASM_EVALSTR_H

#include "compiler.h"

/*
 * Evaluate a string, returning the offset component. The string pointer
 * is advanced to the beginning of the first token following the
 * end of the expression.
 *
 * If the "segment" and/or "wrt" pointers are NULL, then those
 * components are explicitly forbidden and will throw an error.
 */
int64_t evaluate_str(char **str, bool crit, int32_t *segment, int32_t *wrt);

/*
 * Evaluate a size expression: a pure integer, but size specifiers like
 * BYTE are treated like integer constants.
 */
int64_t evaluate_size(char **str, bool crit);

#endif  /* NASM_EVALSTR_H */