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conditional.c File Reference

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

Include dependency graph for conditional.c:

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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.

141{

142 ifState s = conditional_stack_peek(cstack);

143

144 return s == IFSTATE_NONE || s == IFSTATE_TRUE || s == IFSTATE_ELSE_TRUE;

145}

conditional_stack_peek

ifState conditional_stack_peek(ConditionalStack cstack)

Definition: conditional.c:106

ifState

Definition: conditional.h:30

IFSTATE_ELSE_TRUE

@ IFSTATE_ELSE_TRUE

Definition: conditional.h:40

IFSTATE_TRUE

@ IFSTATE_TRUE

Definition: conditional.h:32

IFSTATE_NONE

@ IFSTATE_NONE

Definition: conditional.h:31

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.

19{

20 ConditionalStack cstack = pg_malloc(sizeof(ConditionalStackData));

21

22 cstack->head = NULL;

23 return cstack;

24}

pg_malloc

void * pg_malloc(size_t size)

Definition: fe_memutils.c:47

ConditionalStackData

Definition: conditional.h:67

ConditionalStackData::head

IfStackElem * head

Definition: conditional.h:68

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.

85{

86 if (cstack == NULL)

87 return -1;

88 else

89 {

90 IfStackElem *p = cstack->head;

91 int depth = 0;

92

93 while (p != NULL)

94 {

95 depth++;

96 p = p->next;

97 }

98 return depth;

99 }

100}

IfStackElem

Definition: conditional.h:59

IfStackElem::next

struct IfStackElem * next

Definition: conditional.h:63

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

◆ conditional_stack_destroy()

void conditional_stack_destroy ( ConditionalStack cstack )

Definition at line 43 of file conditional.c.

44{

45 conditional_stack_reset(cstack);

46 free(cstack);

47}

conditional_stack_reset

void conditional_stack_reset(ConditionalStack cstack)

Definition: conditional.c:30

free

#define free(a)

Definition: header.h:65

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.

131{

132 return cstack->head == NULL;

133}

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.

185{

186 if (conditional_stack_empty(cstack))

187 return -1;

188 return cstack->head->paren_depth;

189}

conditional_stack_empty

bool conditional_stack_empty(ConditionalStack cstack)

Definition: conditional.c:130

IfStackElem::paren_depth

int paren_depth

Definition: conditional.h:62

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.

163{

164 if (conditional_stack_empty(cstack))

165 return -1;

166 return cstack->head->query_len;

167}

IfStackElem::query_len

int query_len

Definition: conditional.h:61

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.

107{

108 if (conditional_stack_empty(cstack))

109 return IFSTATE_NONE;

110 return cstack->head->if_state;

111}

IfStackElem::if_state

ifState if_state

Definition: conditional.h:60

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.

119{

120 if (conditional_stack_empty(cstack))

121 return false;

122 cstack->head->if_state = new_state;

123 return true;

124}

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.

70{

71 IfStackElem *p = cstack->head;

72

73 if (!p)

74 return false;

75 cstack->head = cstack->head->next;

76 free(p);

77 return true;

78}

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.

54{

55 IfStackElem *p = (IfStackElem *) pg_malloc(sizeof(IfStackElem));

56

57 p->if_state = new_state;

58 p->query_len = -1;

59 p->paren_depth = -1;

60 p->next = cstack->head;

61 cstack->head = p;

62}

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.

31{

32 if (!cstack)

33 return; /* nothing to do here */

34

35 while (conditional_stack_pop(cstack))

36 continue;

37}

conditional_stack_pop

bool conditional_stack_pop(ConditionalStack cstack)

Definition: conditional.c:69

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.

174{

175 Assert(!conditional_stack_empty(cstack));

176 cstack->head->paren_depth = depth;

177}

Assert

Assert(PointerIsAligned(start, uint64))

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.

152{

153 Assert(!conditional_stack_empty(cstack));

154 cstack->head->query_len = len;

155}

len

const void size_t len

Definition: pg_crc32c_sse42.c:28

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

Referenced by save_query_text_state().