// Copyright(c) 2021 to 2022 ZettaScale Technology and others
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
// v. 1.0 which is available at
// http://www.eclipse.org/org/documents/edl-v10.php.
//
// SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause

#ifndef EXPRESSION_H
#define EXPRESSION_H

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

#include "idl/processor.h"
#include "idl/expression.h"

#define IDL_EXPRESSION \
  (IDL_LITERAL|IDL_UNARY_OPERATOR|IDL_BINARY_OPERATOR)

typedef enum idl_operator {
  IDL_NOP = 0,
#define IDL_UNARY_OPERATOR (1ull<<21)
  IDL_MINUS = (IDL_UNARY_OPERATOR|1u),
  IDL_PLUS,
  IDL_NOT,
#define IDL_BINARY_OPERATOR (1ull<<20)
  IDL_OR = (IDL_BINARY_OPERATOR|1u),
  IDL_XOR,
  IDL_AND,
  IDL_LSHIFT,
  IDL_RSHIFT,
  IDL_ADD,
  IDL_SUBTRACT,
  IDL_MULTIPLY,
  IDL_DIVIDE,
  IDL_MODULO
} idl_operator_t;

idl_operator_t idl_operator(const void *node);

typedef struct idl_intval idl_intval_t;
struct idl_intval {
  idl_type_t type;
  union {
    int64_t llng;
    uint64_t ullng;
  } value;
};

idl_intval_t idl_intval(const idl_const_expr_t *const_expr);

typedef long double idl_floatval_t;

idl_floatval_t idl_floatval(const idl_const_expr_t *const_expr);

IDL_EXPORT idl_retcode_t
idl_evaluate(
  idl_pstate_t *pstate,
  idl_const_expr_t *expr,
  idl_type_t type,
  void *nodep);

#endif /* EXPRESSION_H */
