lex.h

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/* -*- C -*- */
/*
 * Copyright (c) 2012-2020 Seagate Technology LLC and/or its Affiliates
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */


#pragma once

#ifndef __MOTR_XCODE_FF2C_LEX_H__
#define __MOTR_XCODE_FF2C_LEX_H__

#include <sys/types.h>                  /* size_t */
/* export */
struct ff2c_context;
struct ff2c_token;

enum ff2c_token_type {
        FTT_IDENTIFIER = 1,
        FTT_REQUIRE,
        FTT_STRING,
        FTT_VOID,
        FTT_U8,
        FTT_U32,
        FTT_U64,
        FTT_OPAQUE,
        FTT_RECORD,
        FTT_UNION,
        FTT_SEQUENCE,
        FTT_ARRAY,
        FTT_OPEN,
        FTT_CLOSE,
        FTT_SEMICOLON,
        FTT_TAG,
        FTT_ESCAPE
};

extern const char *ff2c_token_type_name[];

struct ff2c_token {
        enum ff2c_token_type  ft_type;
        const char           *ft_val;
        size_t                ft_len;
};

int  ff2c_token_get(struct ff2c_context *ctx, struct ff2c_token *tok);
void ff2c_token_put(struct ff2c_context *ctx, struct ff2c_token *tok);

enum { FF2C_CTX_STACK_MAX = 32 };

struct ff2c_context {
        const char        *fc_origin;
        size_t             fc_size;
        const char        *fc_pt;
        size_t             fc_remain;
        struct ff2c_token  fc_stack[FF2C_CTX_STACK_MAX];
        int                fc_depth;
        int                fc_line;
        int                fc_col;
};

void ff2c_context_init(struct ff2c_context *ctx, const char *buf, size_t size);
void ff2c_context_fini(struct ff2c_context *ctx);
int  ff2c_context_loc(struct ff2c_context *ctx, int nr, char *buf);

/* __MOTR_XCODE_FF2C_LEX_H__ */
#endif

/*
 *  Local variables:
 *  c-indentation-style: "K&R"
 *  c-basic-offset: 8
 *  tab-width: 8
 *  fill-column: 80
 *  scroll-step: 1
 *  End:
 */