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Add debugging aid "bmsToString(Bitmapset *bms)".

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This function has no direct callers at present, but it's convenient for
manual use in a debugger, rather than having to inspect memory and do
bit-counting in your head.

In passing, get rid of useless outBitmapset() wrapper around
_outBitmapset(); let's just export the function that does the work.
Likewise for outToken().

Ashutosh Bapat, tweaked a bit by me

Discussion: <CAFjFpRdiht8e1HTVirbubr4YzaON5iZTzFJjq909y4sU8M_6eA@mail.gmail.com>
This commit is contained in:
Tom Lane 2016-09-16 09:36:19 -04:00
parent 5225c66336
commit d8c61c9765
2 changed files with 34 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
src/backend/nodes/outfuncs.c
View File

@ -81,7 +81,7 @@
/* Write a character-string (possibly NULL) field */
#define WRITE_STRING_FIELD(fldname) \
(appendStringInfo(str, " :" CppAsString(fldname) " "), \
_outToken(str, node->fldname))
outToken(str, node->fldname))
/* Write a parse location field (actually same as INT case) */
#define WRITE_LOCATION_FIELD(fldname) \
@ -95,21 +95,21 @@
/* Write a bitmapset field */
#define WRITE_BITMAPSET_FIELD(fldname) \
(appendStringInfo(str, " :" CppAsString(fldname) " "), \
_outBitmapset(str, node->fldname))
outBitmapset(str, node->fldname))
#define booltostr(x) ((x) ? "true" : "false")
/*
* _outToken
* outToken
* Convert an ordinary string (eg, an identifier) into a form that
* will be decoded back to a plain token by read.c's functions.
*
* If a null or empty string is given, it is encoded as "<>".
*/
static void
_outToken(StringInfo str, const char *s)
void
outToken(StringInfo str, const char *s)
{
if (s == NULL || *s == '\0')
{
@ -140,13 +140,6 @@ _outToken(StringInfo str, const char *s)
}
}
/* for use by extensions which define extensible nodes */
void
outToken(StringInfo str, const char *s)
{
_outToken(str, s);
}
static void
_outList(StringInfo str, const List *node)
{
@ -185,13 +178,13 @@ _outList(StringInfo str, const List *node)
}
/*
* _outBitmapset -
* outBitmapset -
* converts a bitmap set of integers
*
* Note: the output format is "(b int int ...)", similar to an integer List.
*/
static void
_outBitmapset(StringInfo str, const Bitmapset *bms)
void
outBitmapset(StringInfo str, const Bitmapset *bms)
{
int x;
@ -203,13 +196,6 @@ _outBitmapset(StringInfo str, const Bitmapset *bms)
appendStringInfoChar(str, ')');
}
/* for use by extensions which define extensible nodes */
void
outBitmapset(StringInfo str, const Bitmapset *bms)
{
_outBitmapset(str, bms);
}
/*
* Print the value of a Datum given its type.
*/
@ -632,7 +618,7 @@ _outCustomScan(StringInfo str, const CustomScan *node)
WRITE_BITMAPSET_FIELD(custom_relids);
/* CustomName is a key to lookup CustomScanMethods */
appendStringInfoString(str, " :methods ");
_outToken(str, node->methods->CustomName);
outToken(str, node->methods->CustomName);
}
static void
@ -1196,7 +1182,7 @@ _outBoolExpr(StringInfo str, const BoolExpr *node)
break;
}
appendStringInfoString(str, " :boolop ");
_outToken(str, opstr);
outToken(str, opstr);
WRITE_NODE_FIELD(args);
WRITE_LOCATION_FIELD(location);
@ -1609,14 +1595,14 @@ _outPathInfo(StringInfo str, const Path *node)
{
WRITE_ENUM_FIELD(pathtype, NodeTag);
appendStringInfoString(str, " :parent_relids ");
_outBitmapset(str, node->parent->relids);
outBitmapset(str, node->parent->relids);
if (node->pathtarget != node->parent->reltarget)
WRITE_NODE_FIELD(pathtarget);
appendStringInfoString(str, " :required_outer ");
if (node->param_info)
_outBitmapset(str, node->param_info->ppi_req_outer);
outBitmapset(str, node->param_info->ppi_req_outer);
else
_outBitmapset(str, NULL);
outBitmapset(str, NULL);
WRITE_BOOL_FIELD(parallel_aware);
WRITE_BOOL_FIELD(parallel_safe);
WRITE_INT_FIELD(parallel_workers);
@ -1740,7 +1726,7 @@ _outCustomPath(StringInfo str, const CustomPath *node)
WRITE_NODE_FIELD(custom_paths);
WRITE_NODE_FIELD(custom_private);
appendStringInfoString(str, " :methods ");
_outToken(str, node->methods->CustomName);
outToken(str, node->methods->CustomName);
}
static void
@ -2994,12 +2980,12 @@ _outValue(StringInfo str, const Value *value)
case T_String:
/*
* We use _outToken to provide escaping of the string's content,
* We use outToken to provide escaping of the string's content,
* but we don't want it to do anything with an empty string.
*/
appendStringInfoChar(str, '"');
if (value->val.str[0] != '\0')
_outToken(str, value->val.str);
outToken(str, value->val.str);
appendStringInfoChar(str, '"');
break;
case T_BitString:
@ -3895,3 +3881,18 @@ nodeToString(const void *obj)
outNode(&str, obj);
return str.data;
}
/*
* bmsToString -
* returns the ascii representation of the Bitmapset as a palloc'd string
*/
char *
bmsToString(const Bitmapset *bms)
{
StringInfoData str;
/* see stringinfo.h for an explanation of this maneuver */
initStringInfo(&str);
outBitmapset(&str, bms);
return str.data;
}

5
src/include/nodes/nodes.h
View File

@ -551,16 +551,17 @@ extern PGDLLIMPORT Node *newNodeMacroHolder;
/*
* nodes/{outfuncs.c,print.c}
*/
extern char *nodeToString(const void *obj);
struct Bitmapset; /* not to include bitmapset.h here */
struct StringInfoData; /* not to include stringinfo.h here */
extern void outNode(struct StringInfoData *str, const void *obj);
extern void outToken(struct StringInfoData *str, const char *s);
extern void outBitmapset(struct StringInfoData *str,
const struct Bitmapset *bms);
extern void outDatum(struct StringInfoData *str, uintptr_t value,
int typlen, bool typbyval);
extern char *nodeToString(const void *obj);
extern char *bmsToString(const struct Bitmapset *bms);
/*
* nodes/{readfuncs.c,read.c}