/*
* Copyright 2018 Bytes & Brains
*
* 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.
*/
#ifndef PGH3_H
#define PGH3_H
#include
// Main H3 include
typedef struct
{
H3Index *indices;
int *distances;
} hexDistanceTuple;
#define MAX_H3_RES 15
// configure extension version in makefile
#define EXTVERSION "@EXTVERSION@"
#define LIBH3_REQUIRED_MAJOR @LIBH3_REQUIRED_MAJOR@
#define LIBH3_REQUIRED_MINOR @LIBH3_REQUIRED_MINOR@
#define LIBH3_REQUIRED_PATCH @LIBH3_REQUIRED_PATCH@
/* base type in postgres is Datum, and we cannot fit 8 bytes on all platforms
so we use pointers */
#define PG_RETURN_H3_INDEX_P(x) PG_RETURN_POINTER(x)
#define PG_GETARG_H3_INDEX_P(x) (H3Index *)PG_GETARG_POINTER(x)
// helper functions to return sets from user fctx
Datum srf_return_h3_indexes_from_user_fctx(PG_FUNCTION_ARGS);
Datum srf_return_h3_index_distances_from_user_fctx(PG_FUNCTION_ARGS);
// macros to pass on fcinfo to above helpers
#define SRF_RETURN_H3_INDEXES_FROM_USER_FCTX() \
return srf_return_h3_indexes_from_user_fctx(fcinfo)
#define SRF_RETURN_H3_INDEX_DISTANCES_FROM_USER_FCTX() \
return srf_return_h3_index_distances_from_user_fctx(fcinfo)
#define ASSERT(condition, code, msg, ...) \
if (0 == (condition)) ereport(ERROR, ( \
errcode(code), \
errmsg(msg, ##__VA_ARGS__) \
))
#define ASSERT_EXTERNAL(condition, msg, ...) \
ASSERT(condition, ERRCODE_EXTERNAL_ROUTINE_EXCEPTION, msg, ##__VA_ARGS__)
#define ENSURE_TYPEFUNC_COMPOSITE(x) \
ASSERT( \
x == TYPEFUNC_COMPOSITE, \
ERRCODE_INVALID_PARAMETER_VALUE, \
"Function returning record called in context " \
"that cannot accept type record" \
)
#endif