#include "postgres_fe.h"
#include "fe_utils/conditional.h"

Include dependency graph for conditional.c:

Functions
ConditionalStack	conditional_stack_create (void)

void	conditional_stack_reset (ConditionalStack cstack)

void	conditional_stack_destroy (ConditionalStack cstack)

void	conditional_stack_push (ConditionalStack cstack, ifState new_state)

bool	conditional_stack_pop (ConditionalStack cstack)

int	conditional_stack_depth (ConditionalStack cstack)

ifState	conditional_stack_peek (ConditionalStack cstack)

bool	conditional_stack_poke (ConditionalStack cstack, ifState new_state)

bool	conditional_stack_empty (ConditionalStack cstack)

bool	conditional_active (ConditionalStack cstack)

void	conditional_stack_set_query_len (ConditionalStack cstack, int len)

int	conditional_stack_get_query_len (ConditionalStack cstack)

void	conditional_stack_set_paren_depth (ConditionalStack cstack, int depth)

int	conditional_stack_get_paren_depth (ConditionalStack cstack)

Function Documentation

◆ conditional_active()

bool conditional_active ( ConditionalStack cstack )

Definition at line 140 of file conditional.c.

{
    ifState     s = conditional_stack_peek(cstack);
 
    return s == IFSTATE_NONE || s == IFSTATE_TRUE || s == IFSTATE_ELSE_TRUE;
}

References conditional_stack_peek(), IFSTATE_ELSE_TRUE, IFSTATE_NONE, and IFSTATE_TRUE.

Referenced by advanceConnectionState(), exec_command(), exec_command_if(), get_prompt(), HandleSlashCmds(), MainLoop(), and psql_get_variable().

◆ conditional_stack_create()

ConditionalStack conditional_stack_create ( void )

Definition at line 18 of file conditional.c.

{
    ConditionalStack cstack = pg_malloc(sizeof(ConditionalStackData));
 
    cstack->head = NULL;
    return cstack;
}

References ConditionalStackData::head, and pg_malloc().

Referenced by CheckConditional(), main(), and MainLoop().

◆ conditional_stack_depth()

int conditional_stack_depth ( ConditionalStack cstack )

Definition at line 84 of file conditional.c.

{
    if (cstack == NULL)
        return -1;
    else
    {
        IfStackElem *p = cstack->head;
        int         depth = 0;
 
        while (p != NULL)
        {
            depth++;
            p = p->next;
        }
        return depth;
    }
}

References ConditionalStackData::head, and IfStackElem::next.

◆ conditional_stack_destroy()

void conditional_stack_destroy ( ConditionalStack cstack )

Definition at line 43 of file conditional.c.

{
    conditional_stack_reset(cstack);
    free(cstack);
}

References conditional_stack_reset(), and free.

Referenced by CheckConditional(), main(), and MainLoop().

◆ conditional_stack_empty()

bool conditional_stack_empty ( ConditionalStack cstack )

Definition at line 130 of file conditional.c.

{
    return cstack->head == NULL;
}

References ConditionalStackData::head.

Referenced by advanceConnectionState(), CheckConditional(), conditional_stack_get_paren_depth(), conditional_stack_get_query_len(), conditional_stack_peek(), conditional_stack_poke(), conditional_stack_set_paren_depth(), conditional_stack_set_query_len(), executeMetaCommand(), and MainLoop().

◆ conditional_stack_get_paren_depth()

int conditional_stack_get_paren_depth ( ConditionalStack cstack )

Definition at line 184 of file conditional.c.

{
    if (conditional_stack_empty(cstack))
        return -1;
    return cstack->head->paren_depth;
}

References conditional_stack_empty(), ConditionalStackData::head, and IfStackElem::paren_depth.

Referenced by discard_query_text().

◆ conditional_stack_get_query_len()

int conditional_stack_get_query_len ( ConditionalStack cstack )

Definition at line 162 of file conditional.c.

{
    if (conditional_stack_empty(cstack))
        return -1;
    return cstack->head->query_len;
}

References conditional_stack_empty(), ConditionalStackData::head, and IfStackElem::query_len.

Referenced by discard_query_text().

◆ conditional_stack_peek()

ifState conditional_stack_peek ( ConditionalStack cstack )

Definition at line 106 of file conditional.c.

{
    if (conditional_stack_empty(cstack))
        return IFSTATE_NONE;
    return cstack->head->if_state;
}

References conditional_stack_empty(), ConditionalStackData::head, IfStackElem::if_state, and IFSTATE_NONE.

Referenced by advanceConnectionState(), CheckConditional(), conditional_active(), exec_command_elif(), exec_command_else(), exec_command_endif(), and executeMetaCommand().

◆ conditional_stack_poke()

bool conditional_stack_poke	(	ConditionalStack	cstack,
		ifState	new_state
	)

Definition at line 118 of file conditional.c.

{
    if (conditional_stack_empty(cstack))
        return false;
    cstack->head->if_state = new_state;
    return true;
}

References conditional_stack_empty(), ConditionalStackData::head, and IfStackElem::if_state.

Referenced by advanceConnectionState(), CheckConditional(), exec_command_elif(), exec_command_else(), exec_command_if(), and executeMetaCommand().

◆ conditional_stack_pop()

bool conditional_stack_pop ( ConditionalStack cstack )

Definition at line 69 of file conditional.c.

{
    IfStackElem *p = cstack->head;
 
    if (!p)
        return false;
    cstack->head = cstack->head->next;
    free(p);
    return true;
}

References free, ConditionalStackData::head, and IfStackElem::next.

Referenced by advanceConnectionState(), CheckConditional(), conditional_stack_reset(), exec_command_endif(), executeMetaCommand(), HandleSlashCmds(), and MainLoop().

◆ conditional_stack_push()

void conditional_stack_push	(	ConditionalStack	cstack,
		ifState	new_state
	)

Definition at line 53 of file conditional.c.

{
    IfStackElem *p = (IfStackElem *) pg_malloc(sizeof(IfStackElem));
 
    p->if_state = new_state;
    p->query_len = -1;
    p->paren_depth = -1;
    p->next = cstack->head;
    cstack->head = p;
}

References ConditionalStackData::head, IfStackElem::if_state, IfStackElem::next, IfStackElem::paren_depth, pg_malloc(), and IfStackElem::query_len.

Referenced by advanceConnectionState(), CheckConditional(), exec_command_if(), executeMetaCommand(), and HandleSlashCmds().

◆ conditional_stack_reset()

void conditional_stack_reset ( ConditionalStack cstack )

Definition at line 30 of file conditional.c.

{
    if (!cstack)
        return;                 /* nothing to do here */
 
    while (conditional_stack_pop(cstack))
        continue;
}

References conditional_stack_pop().

Referenced by advanceConnectionState(), and conditional_stack_destroy().

◆ conditional_stack_set_paren_depth()

void conditional_stack_set_paren_depth	(	ConditionalStack	cstack,
		int	depth
	)

Definition at line 173 of file conditional.c.

{
    Assert(!conditional_stack_empty(cstack));
    cstack->head->paren_depth = depth;
}

References Assert, conditional_stack_empty(), ConditionalStackData::head, and IfStackElem::paren_depth.

Referenced by save_query_text_state().

◆ conditional_stack_set_query_len()

void conditional_stack_set_query_len	(	ConditionalStack	cstack,
		int	len
	)

Definition at line 151 of file conditional.c.

{
    Assert(!conditional_stack_empty(cstack));
    cstack->head->query_len = len;
}

References Assert, conditional_stack_empty(), ConditionalStackData::head, len, and IfStackElem::query_len.