esql_scanner_support.h

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/*
 * Copyright 2008 Search Solution Corporation
 * Copyright 2016 CUBRID Corporation
 *
 *  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.
 *
 */


/*
 * esql_scanner_support.h -
*/

#ifndef _ESQL_SCANNER_SUPPORT_H_
#define _ESQL_SCANNER_SUPPORT_H_

#ident "$Id$"

#include "esql_misc.h"


#define CHECK_LINENO \
    do {             \
      if (need_line_directive) \
        emit_line_directive(); \
    } while (0)


typedef struct scanner_mode_record SCANNER_MODE_RECORD;
typedef struct keyword_rec KEYWORD_REC;

struct scanner_mode_record
{
  enum scanner_mode previous_mode;
  bool recognize_keywords;
  bool suppress_echo;
  struct scanner_mode_record *previous_record;
};

enum scansup_msg
{
  MSG_EMPTY_STACK = 1,
  MSG_NOT_PERMITTED = 2
};

enum
{
  MSG_DONT_KNOW = 1,
  MSG_CHECK_CORRECTNESS,
  MSG_USING_NOT_PERMITTED,
  MSG_CURSOR_UNDEFINED,
  MSG_PTR_TO_DESCR,
  MSG_PTR_TO_DB_OBJECT,
  MSG_CHAR_STRING,
  MSG_INDICATOR_NOT_ALLOWED,
  MSG_NOT_DECLARED,
  MSG_MUST_BE_SHORT,
  MSG_INCOMPLETE_DEF,
  MSG_NOT_VALID,
  MSG_TYPE_NOT_ACCEPTABLE,
  MSG_UNKNOWN_HV_TYPE,
  MSG_BAD_ADDRESS,
  MSG_DEREF_NOT_ALLOWED,
  MSG_NOT_POINTER,
  MSG_NOT_POINTER_TO_STRUCT,
  MSG_NOT_STRUCT,
  MSG_NO_FIELD,

  ESQL_MSG_STD_ERR = 52,
  ESQL_MSG_LEX_ERROR = 53,
  ESQL_MSG_SYNTAX_ERR1 = 54,
  ESQL_MSG_SYNTAX_ERR2 = 55
};

struct keyword_rec
{
  const char *keyword;
  short value;
  short suppress_echo;      /* Ignored for C keywords */
};

typedef struct keyword_table
{
  KEYWORD_REC *keyword_array;
  int size;
} KEYWORD_TABLE;


static SCANNER_MODE_RECORD *mode_stack;
static enum scanner_mode mode;
static bool recognize_keywords;
static bool suppress_echo = false;

#if defined (ENABLE_UNUSED_FUNCTION)
static void ignore_token (void);
static void count_embedded_newlines (void);
static void echo_string_constant (const char *, int);
#endif

int check_c_identifier (char *name);
int check_identifier (KEYWORD_TABLE * keywords, char *name);

#endif /* _ESQL_SCANNER_SUPPORT_H_ */