bool.c File Reference

#include "postgres.h"
#include <ctype.h>
#include "libpq/pqformat.h"
#include "utils/builtins.h"

Include dependency graph for bool.c:

Go to the source code of this file.

Data Structures
struct	BoolAggState

Typedefs
typedef struct BoolAggState	BoolAggState

Functions
bool	parse_bool (const char *value, bool *result)
bool	parse_bool_with_len (const char *value, size_t len, bool *result)
Datum	boolin (PG_FUNCTION_ARGS)
Datum	boolout (PG_FUNCTION_ARGS)
Datum	boolrecv (PG_FUNCTION_ARGS)
Datum	boolsend (PG_FUNCTION_ARGS)
Datum	booltext (PG_FUNCTION_ARGS)
Datum	booleq (PG_FUNCTION_ARGS)
Datum	boolne (PG_FUNCTION_ARGS)
Datum	boollt (PG_FUNCTION_ARGS)
Datum	boolgt (PG_FUNCTION_ARGS)
Datum	boolle (PG_FUNCTION_ARGS)
Datum	boolge (PG_FUNCTION_ARGS)
Datum	booland_statefunc (PG_FUNCTION_ARGS)
Datum	boolor_statefunc (PG_FUNCTION_ARGS)
static BoolAggState *	makeBoolAggState (FunctionCallInfo fcinfo)
Datum	bool_accum (PG_FUNCTION_ARGS)
Datum	bool_accum_inv (PG_FUNCTION_ARGS)
Datum	bool_alltrue (PG_FUNCTION_ARGS)
Datum	bool_anytrue (PG_FUNCTION_ARGS)

Typedef Documentation

BoolAggState

typedef struct BoolAggState BoolAggState

Function Documentation

bool_accum()

Datum bool_accum

(

PG_FUNCTION_ARGS

)

Definition at line 328 of file bool.c.

{
    BoolAggState *state;
 
    state = PG_ARGISNULL(0) ? NULL : (BoolAggState *) PG_GETARG_POINTER(0);
 
    /* Create the state data on first call */
    if (state == NULL)
        state = makeBoolAggState(fcinfo);
 
    if (!PG_ARGISNULL(1))
    {
        state->aggcount++;
        if (PG_GETARG_BOOL(1))
            state->aggtrue++;
    }
 
    PG_RETURN_POINTER(state);
}

References makeBoolAggState(), PG_ARGISNULL, PG_GETARG_BOOL, PG_GETARG_POINTER, and PG_RETURN_POINTER.

bool_accum_inv()

Datum bool_accum_inv

(

PG_FUNCTION_ARGS

)

Definition at line 349 of file bool.c.

{
    BoolAggState *state;
 
    state = PG_ARGISNULL(0) ? NULL : (BoolAggState *) PG_GETARG_POINTER(0);
 
    /* bool_accum should have created the state data */
    if (state == NULL)
        elog(ERROR, "bool_accum_inv called with NULL state");
 
    if (!PG_ARGISNULL(1))
    {
        state->aggcount--;
        if (PG_GETARG_BOOL(1))
            state->aggtrue--;
    }
 
    PG_RETURN_POINTER(state);
}

References elog(), ERROR, PG_ARGISNULL, PG_GETARG_BOOL, PG_GETARG_POINTER, and PG_RETURN_POINTER.

bool_alltrue()

Datum bool_alltrue

(

PG_FUNCTION_ARGS

)

Definition at line 370 of file bool.c.

{
    BoolAggState *state;
 
    state = PG_ARGISNULL(0) ? NULL : (BoolAggState *) PG_GETARG_POINTER(0);
 
    /* if there were no non-null values, return NULL */
    if (state == NULL || state->aggcount == 0)
        PG_RETURN_NULL();
 
    /* true if all non-null values are true */
    PG_RETURN_BOOL(state->aggtrue == state->aggcount);
}

References PG_ARGISNULL, PG_GETARG_POINTER, PG_RETURN_BOOL, and PG_RETURN_NULL.

bool_anytrue()

Datum bool_anytrue

(

PG_FUNCTION_ARGS

)

Definition at line 385 of file bool.c.

{
    BoolAggState *state;
 
    state = PG_ARGISNULL(0) ? NULL : (BoolAggState *) PG_GETARG_POINTER(0);
 
    /* if there were no non-null values, return NULL */
    if (state == NULL || state->aggcount == 0)
        PG_RETURN_NULL();
 
    /* true if any non-null value is true */
    PG_RETURN_BOOL(state->aggtrue > 0);
}

References PG_ARGISNULL, PG_GETARG_POINTER, PG_RETURN_BOOL, and PG_RETURN_NULL.

booland_statefunc()

Datum booland_statefunc

(

PG_FUNCTION_ARGS

)

Definition at line 287 of file bool.c.

{
    PG_RETURN_BOOL(PG_GETARG_BOOL(0) && PG_GETARG_BOOL(1));
}

References PG_GETARG_BOOL, and PG_RETURN_BOOL.

booleq()

Datum booleq

(

PG_FUNCTION_ARGS

)

Definition at line 223 of file bool.c.

{
    bool        arg1 = PG_GETARG_BOOL(0);
    bool        arg2 = PG_GETARG_BOOL(1);
 
    PG_RETURN_BOOL(arg1 == arg2);
}

References PG_GETARG_BOOL, and PG_RETURN_BOOL.

boolge()

Datum boolge

(

PG_FUNCTION_ARGS

)

Definition at line 268 of file bool.c.

{
    bool        arg1 = PG_GETARG_BOOL(0);
    bool        arg2 = PG_GETARG_BOOL(1);
 
    PG_RETURN_BOOL(arg1 >= arg2);
}

References PG_GETARG_BOOL, and PG_RETURN_BOOL.

boolgt()

Datum boolgt

(

PG_FUNCTION_ARGS

)

Definition at line 250 of file bool.c.

{
    bool        arg1 = PG_GETARG_BOOL(0);
    bool        arg2 = PG_GETARG_BOOL(1);
 
    PG_RETURN_BOOL(arg1 > arg2);
}

References PG_GETARG_BOOL, and PG_RETURN_BOOL.

boolin()

Datum boolin

(

PG_FUNCTION_ARGS

)

Definition at line 126 of file bool.c.

{
    const char *in_str = PG_GETARG_CSTRING(0);
    const char *str;
    size_t      len;
    bool        result;
 
    /*
     * Skip leading and trailing whitespace
     */
    str = in_str;
    while (isspace((unsigned char) *str))
        str++;
 
    len = strlen(str);
    while (len > 0 && isspace((unsigned char) str[len - 1]))
        len--;
 
    if (parse_bool_with_len(str, len, &result))
        PG_RETURN_BOOL(result);
 
    ereturn(fcinfo->context, (Datum) 0,
            (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
             errmsg("invalid input syntax for type %s: \"%s\"",
                    "boolean", in_str)));
}

References ereturn, errcode(), errmsg(), len, parse_bool_with_len(), PG_GETARG_CSTRING, PG_RETURN_BOOL, and generate_unaccent_rules::str.

boolle()

Datum boolle

(

PG_FUNCTION_ARGS

)

Definition at line 259 of file bool.c.

{
    bool        arg1 = PG_GETARG_BOOL(0);
    bool        arg2 = PG_GETARG_BOOL(1);
 
    PG_RETURN_BOOL(arg1 <= arg2);
}

References PG_GETARG_BOOL, and PG_RETURN_BOOL.

boollt()

Datum boollt

(

PG_FUNCTION_ARGS

)

Definition at line 241 of file bool.c.

{
    bool        arg1 = PG_GETARG_BOOL(0);
    bool        arg2 = PG_GETARG_BOOL(1);
 
    PG_RETURN_BOOL(arg1 < arg2);
}

References PG_GETARG_BOOL, and PG_RETURN_BOOL.

boolne()

Datum boolne

(

PG_FUNCTION_ARGS

)

Definition at line 232 of file bool.c.

{
    bool        arg1 = PG_GETARG_BOOL(0);
    bool        arg2 = PG_GETARG_BOOL(1);
 
    PG_RETURN_BOOL(arg1 != arg2);
}

References PG_GETARG_BOOL, and PG_RETURN_BOOL.

boolor_statefunc()

Datum boolor_statefunc

(

PG_FUNCTION_ARGS

)

Definition at line 299 of file bool.c.

{
    PG_RETURN_BOOL(PG_GETARG_BOOL(0) || PG_GETARG_BOOL(1));
}

References PG_GETARG_BOOL, and PG_RETURN_BOOL.

boolout()

Datum boolout

(

PG_FUNCTION_ARGS

)

Definition at line 157 of file bool.c.

{
    bool        b = PG_GETARG_BOOL(0);
    char       *result = (char *) palloc(2);
 
    result[0] = (b) ? 't' : 'f';
    result[1] = '\0';
    PG_RETURN_CSTRING(result);
}

References b, palloc(), PG_GETARG_BOOL, and PG_RETURN_CSTRING.

boolrecv()

Datum boolrecv

(

PG_FUNCTION_ARGS

)

Definition at line 174 of file bool.c.

{
    StringInfo  buf = (StringInfo) PG_GETARG_POINTER(0);
    int         ext;
 
    ext = pq_getmsgbyte(buf);
    PG_RETURN_BOOL(ext != 0);
}

References buf, PG_GETARG_POINTER, PG_RETURN_BOOL, and pq_getmsgbyte().

boolsend()

Datum boolsend

(

PG_FUNCTION_ARGS

)

Definition at line 187 of file bool.c.

{
    bool        arg1 = PG_GETARG_BOOL(0);
    StringInfoData buf;
 
    pq_begintypsend(&buf);
    pq_sendbyte(&buf, arg1 ? 1 : 0);
    PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

References buf, PG_GETARG_BOOL, PG_RETURN_BYTEA_P, pq_begintypsend(), pq_endtypsend(), and pq_sendbyte().

booltext()

Datum booltext

(

PG_FUNCTION_ARGS

)

Definition at line 204 of file bool.c.

{
    bool        arg1 = PG_GETARG_BOOL(0);
    const char *str;
 
    if (arg1)
        str = "true";
    else
        str = "false";
 
    PG_RETURN_TEXT_P(cstring_to_text(str));
}

References cstring_to_text(), PG_GETARG_BOOL, PG_RETURN_TEXT_P, and generate_unaccent_rules::str.

makeBoolAggState()

static BoolAggState* makeBoolAggState ( FunctionCallInfo  fcinfo )

static

Definition at line 311 of file bool.c.

{
    BoolAggState *state;
    MemoryContext agg_context;
 
    if (!AggCheckCallContext(fcinfo, &agg_context))
        elog(ERROR, "aggregate function called in non-aggregate context");
 
    state = (BoolAggState *) MemoryContextAlloc(agg_context,
                                                sizeof(BoolAggState));
    state->aggcount = 0;
    state->aggtrue = 0;
 
    return state;
}

References AggCheckCallContext(), elog(), ERROR, and MemoryContextAlloc().

Referenced by bool_accum().

parse_bool()

bool parse_bool	(	const char *	value,
		bool *	result
	)

Definition at line 30 of file bool.c.

{
    return parse_bool_with_len(value, strlen(value), result);
}

References parse_bool_with_len(), and value.

Referenced by GrantRole(), parse_and_validate_value(), parse_basebackup_options(), parse_extension_control_file(), parse_one_reloption(), pg_decode_startup(), and ProcessStartupPacket().

parse_bool_with_len()

bool parse_bool_with_len	(	const char *	value,
		size_t	len,
		bool *	result
	)

Definition at line 36 of file bool.c.

{
    /* Check the most-used possibilities first. */
    switch (*value)
    {
        case 't':
        case 'T':
            if (pg_strncasecmp(value, "true", len) == 0)
            {
                if (result)
                    *result = true;
                return true;
            }
            break;
        case 'f':
        case 'F':
            if (pg_strncasecmp(value, "false", len) == 0)
            {
                if (result)
                    *result = false;
                return true;
            }
            break;
        case 'y':
        case 'Y':
            if (pg_strncasecmp(value, "yes", len) == 0)
            {
                if (result)
                    *result = true;
                return true;
            }
            break;
        case 'n':
        case 'N':
            if (pg_strncasecmp(value, "no", len) == 0)
            {
                if (result)
                    *result = false;
                return true;
            }
            break;
        case 'o':
        case 'O':
            /* 'o' is not unique enough */
            if (pg_strncasecmp(value, "on", (len > 2 ? len : 2)) == 0)
            {
                if (result)
                    *result = true;
                return true;
            }
            else if (pg_strncasecmp(value, "off", (len > 2 ? len : 2)) == 0)
            {
                if (result)
                    *result = false;
                return true;
            }
            break;
        case '1':
            if (len == 1)
            {
                if (result)
                    *result = true;
                return true;
            }
            break;
        case '0':
            if (len == 1)
            {
                if (result)
                    *result = false;
                return true;
            }
            break;
        default:
            break;
    }
 
    if (result)
        *result = false;        /* suppress compiler warning */
    return false;
}

References len, pg_strncasecmp(), and value.

Referenced by boolin(), and parse_bool().