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Commit50d22de

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Cleanup code in reloptions.h regarding reloption handling
reloptions.h includes sinceba748f7 a set of macros to handle reloptiontypes in a way similar to how parseRelOptions() works. They have neverbeen used in the core code, and we have more simple methods now to parseand fill in rd_options for a given relation depending on its relkind, soremove this interface to simplify things.Per discussion between Amit Langote, Álvaro Herrera and me.Discussion:https://postgr.es/m/CA+HiwqE6zbNO92az6pp5GiTw4tr-9rfCE0t84whQSP+YwSKjMQ@mail.gmail.com
1 parent1bbd608 commit50d22de

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2 files changed

+17
-124
lines changed

2 files changed

+17
-124
lines changed

‎src/backend/access/common/reloptions.c‎

Lines changed: 12 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -496,6 +496,15 @@ static void initialize_reloptions(void);
496496
staticvoidparse_one_reloption(relopt_value*option,char*text_str,
497497
inttext_len,boolvalidate);
498498

499+
/*
500+
* Get the length of a string reloption (either default or the user-defined
501+
* value). This is used for allocation purposes when building a set of
502+
* relation options.
503+
*/
504+
#defineGET_STRING_RELOPTION_LEN(option) \
505+
((option).isset ? strlen((option).values.string_val) : \
506+
((relopt_string *) (option).gen)->default_len)
507+
499508
/*
500509
* initialize_reloptions
501510
*initialization routine, must be called before parsing
@@ -1142,7 +1151,7 @@ extractRelOptions(HeapTuple tuple, TupleDesc tupdesc,
11421151
* returned array. Values of type string are allocated separately and must
11431152
* be freed by the caller.
11441153
*/
1145-
relopt_value*
1154+
staticrelopt_value*
11461155
parseRelOptions(Datumoptions,boolvalidate,relopt_kindkind,
11471156
int*numrelopts)
11481157
{
@@ -1367,7 +1376,7 @@ parse_one_reloption(relopt_value *option, char *text_str, int text_len,
13671376
* "base" should be sizeof(struct) of the reloptions struct (StdRdOptions or
13681377
* equivalent).
13691378
*/
1370-
void*
1379+
staticvoid*
13711380
allocateReloptStruct(Sizebase,relopt_value*options,intnumoptions)
13721381
{
13731382
Sizesize=base;
@@ -1391,7 +1400,7 @@ allocateReloptStruct(Size base, relopt_value *options, int numoptions)
13911400
* elems, of length numelems, is the table describing the allowed options.
13921401
* When validate is true, it is expected that all options appear in elems.
13931402
*/
1394-
void
1403+
staticvoid
13951404
fillRelOptions(void*rdopts,Sizebasesize,
13961405
relopt_value*options,intnumoptions,
13971406
boolvalidate,

‎src/include/access/reloptions.h‎

Lines changed: 5 additions & 121 deletions
Original file line numberDiff line numberDiff line change
@@ -140,132 +140,24 @@ typedef struct relopt_string
140140
char*default_val;
141141
}relopt_string;
142142

143-
/* This is the table datatype forfillRelOptions */
143+
/* This is the table datatype forbuild_reloptions() */
144144
typedefstruct
145145
{
146146
constchar*optname;/* option's name */
147147
relopt_typeopttype;/* option's datatype */
148148
intoffset;/* offset of field in result struct */
149149
}relopt_parse_elt;
150150

151-
152151
/*
153-
* These macros exist for the convenience of amoptions writers (but consider
154-
* using fillRelOptions, which is a lot simpler). Beware of multiple
155-
* evaluation of arguments!
156-
*
157-
* The last argument in the HANDLE_*_RELOPTION macros allows the caller to
158-
* determine whether the option was set (true), or its value acquired from
159-
* defaults (false); it can be passed as (char *) NULL if the caller does not
160-
* need this information.
161-
*
162-
* optname is the option name (a string), var is the variable
163-
* on which the value should be stored (e.g. StdRdOptions->fillfactor), and
164-
* option is a relopt_value pointer.
165-
*
166-
* The normal way to use this is to loop on the relopt_value array returned by
167-
* parseRelOptions:
168-
* for (i = 0; options[i].gen->name; i++)
169-
* {
170-
*if (HAVE_RELOPTION("fillfactor", options[i])
171-
*{
172-
*HANDLE_INT_RELOPTION("fillfactor", rdopts->fillfactor, options[i], &isset);
173-
*continue;
174-
*}
175-
*if (HAVE_RELOPTION("default_row_acl", options[i])
176-
*{
177-
*...
178-
*}
179-
*...
180-
*if (validate)
181-
*ereport(ERROR,
182-
*(errmsg("unknown option")));
183-
*}
184-
*
185-
*Note that this is more or less the same that fillRelOptions does, so only
186-
*use this if you need to do something non-standard within some option's
187-
*code block.
188-
*/
189-
#defineHAVE_RELOPTION(optname,option) \
190-
(strncmp(option.gen->name, optname, option.gen->namelen + 1) == 0)
191-
192-
#defineHANDLE_INT_RELOPTION(optname,var,option,wasset)\
193-
do {\
194-
if (option.isset)\
195-
var = option.values.int_val;\
196-
else\
197-
var = ((relopt_int *) option.gen)->default_val;\
198-
(wasset) != NULL ? *(wasset) = option.isset : (dummyret)NULL; \
199-
} while (0)
200-
201-
#defineHANDLE_BOOL_RELOPTION(optname,var,option,wasset)\
202-
do {\
203-
if (option.isset)\
204-
var = option.values.bool_val;\
205-
else\
206-
var = ((relopt_bool *) option.gen)->default_val;\
207-
(wasset) != NULL ? *(wasset) = option.isset : (dummyret) NULL; \
208-
} while (0)
209-
210-
#defineHANDLE_REAL_RELOPTION(optname,var,option,wasset)\
211-
do {\
212-
if (option.isset)\
213-
var = option.values.real_val;\
214-
else\
215-
var = ((relopt_real *) option.gen)->default_val;\
216-
(wasset) != NULL ? *(wasset) = option.isset : (dummyret) NULL; \
217-
} while (0)
218-
219-
/*
220-
* Note that this assumes that the variable is already allocated at the tail of
221-
* reloptions structure (StdRdOptions or equivalent).
222-
*
223-
* "base" is a pointer to the reloptions structure, and "offset" is an integer
224-
* variable that must be initialized to sizeof(reloptions structure). This
225-
* struct must have been allocated with enough space to hold any string option
226-
* present, including terminating \0 for every option. SET_VARSIZE() must be
227-
* called on the struct with this offset as the second argument, after all the
228-
* string options have been processed.
229-
*/
230-
#defineHANDLE_STRING_RELOPTION(optname,var,option,base,offset,wasset) \
231-
do {\
232-
relopt_string *optstring = (relopt_string *) option.gen;\
233-
char *string_val;\
234-
if (option.isset)\
235-
string_val = option.values.string_val;\
236-
else if (!optstring->default_isnull)\
237-
string_val = optstring->default_val;\
238-
else\
239-
string_val = NULL;\
240-
(wasset) != NULL ? *(wasset) = option.isset : (dummyret) NULL; \
241-
if (string_val == NULL)\
242-
var = 0;\
243-
else\
244-
{\
245-
strcpy(((char *)(base)) + (offset), string_val);\
246-
var = (offset);\
247-
(offset) += strlen(string_val) + 1;\
248-
}\
249-
} while (0)
250-
251-
/*
252-
* For use during amoptions: get the strlen of a string option
253-
* (either default or the user defined value)
254-
*/
255-
#defineGET_STRING_RELOPTION_LEN(option) \
256-
((option).isset ? strlen((option).values.string_val) : \
257-
((relopt_string *) (option).gen)->default_len)
258-
259-
/*
260-
* For use by code reading options already parsed: get a pointer to the string
261-
* value itself. "optstruct" is the StdRdOptions struct or equivalent, "member"
262-
* is the struct member corresponding to the string option
152+
* Utility macro to get a value for a string reloption once the options
153+
* are parsed. This gets a pointer to the string value itself. "optstruct"
154+
* is the StdRdOptions struct or equivalent, "member" is the struct member
155+
* corresponding to the string option.
263156
*/
264157
#defineGET_STRING_RELOPTION(optstruct,member) \
265158
((optstruct)->member == 0 ? NULL : \
266159
(char *)(optstruct) + (optstruct)->member)
267160

268-
269161
externrelopt_kindadd_reloption_kind(void);
270162
externvoidadd_bool_reloption(bits32kinds,constchar*name,constchar*desc,
271163
booldefault_val,LOCKMODElockmode);
@@ -288,14 +180,6 @@ extern Datum transformRelOptions(Datum oldOptions, List *defList,
288180
externList*untransformRelOptions(Datumoptions);
289181
externbytea*extractRelOptions(HeapTupletuple,TupleDesctupdesc,
290182
amoptions_functionamoptions);
291-
externrelopt_value*parseRelOptions(Datumoptions,boolvalidate,
292-
relopt_kindkind,int*numrelopts);
293-
externvoid*allocateReloptStruct(Sizebase,relopt_value*options,
294-
intnumoptions);
295-
externvoidfillRelOptions(void*rdopts,Sizebasesize,
296-
relopt_value*options,intnumoptions,
297-
boolvalidate,
298-
constrelopt_parse_elt*elems,intnelems);
299183
externvoid*build_reloptions(Datumreloptions,boolvalidate,
300184
relopt_kindkind,
301185
Sizerelopt_struct_size,

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