1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
|
/*
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 2013 Oracle and/or its affiliates. All rights reserved.
*
*/
/*
* The functions in this compilation unit are those related to
* building the schema model during the parsing of a SQL source file.
* Most of the functions that have name beginning with "sqlite3..."
* are invoked by the sqlite parser as it recognizes bits of syntax.
*/
#include <ctype.h>
#include "db_sql_codegen.h"
DB_SCHEMA the_schema;
PARSE_PROGRESS the_parse_progress;
int maxbinsz; /* keeps track of the largest binary field */
/*
* Extract a name from sqlite token structure. Returns allocated memory.
*/
static char *
name_from_token(t, pParse)
Token *t;
Parse *pParse;
{
char *s;
if (t == NULL || t->n <= 0) {
sqlite3ErrorMsg(pParse,
"Extracting name from a null or empty token");
return NULL;
}
s = calloc(1, t->n + 1);
if (s == NULL) {
sqlite3ErrorMsg(pParse, "Malloc failed");
return NULL;
}
memcpy(s, (char*)t->z, t->n);
sqlite3Dequote(s);
return s;
}
/*
* Allocate, populate, and return memory for an ENTITY struct. If
* there is a malloc failure, set an error message in the Parse
* object and return NULL.
*/
static ENTITY *
make_entity(name, pParse)
char *name;
Parse *pParse;
{
ENTITY *entity;
entity = calloc(1, sizeof(ENTITY));
if (entity == NULL) {
sqlite3ErrorMsg(pParse, "Malloc failed");
return NULL;
}
entity->name = name;
entity->line_number = line_number;
entity->dbtype = "DB_BTREE";
entity->transactional = the_schema.environment.transactional;
return entity;
}
/*
* Allocate, populate, and return memory for an ATTRIBUTE struct. If
* there is a malloc failure, set an error message in the Parse
* object and return NULL.
*/
static ATTRIBUTE *
make_attribute(name, pParse)
char *name;
Parse *pParse;
{
ATTRIBUTE *attribute;
attribute = calloc(1, sizeof(ATTRIBUTE));
if (attribute == NULL) {
sqlite3ErrorMsg(pParse, "Malloc failed");
return NULL;
}
attribute->name = name;
return attribute;
}
/*
* Allocate, populate, and return memory for an ATTR_TYPE struct. If
* there is a malloc failure, set an error message in the Parse
* object and return NULL.
*/
static ATTR_TYPE *
make_attrtype(token, ctype, dimension, is_array, is_string, pParse)
char *token;
char *ctype;
int dimension;
int is_array;
int is_string;
Parse *pParse;
{
ATTR_TYPE *type;
type = calloc(1, sizeof(ATTR_TYPE));
if (type == NULL) {
sqlite3ErrorMsg(pParse, "Malloc failed");
return NULL;
}
type->sql_token = token;
type->c_type = ctype;
type->array_dim = dimension;
type->is_array = is_array;
type->is_string = is_string;
return type;
}
/*
* Allocate, populate, and return memory for an DB_INDEX struct. If
* there is a malloc failure, set the error message in the Parse
* object and return NULL.
*/
static DB_INDEX *
make_index(name, primary, attribute, pParse)
char *name;
ENTITY *primary;
ATTRIBUTE *attribute;
Parse *pParse;
{
DB_INDEX *idx;
idx = calloc(1, sizeof(DB_INDEX));
if (idx == NULL) {
sqlite3ErrorMsg(pParse, "Malloc failed");
return NULL;
}
idx->name = name;
idx->primary = primary;
idx->attribute = attribute;
idx->line_number = line_number;
idx->dbtype = "DB_BTREE";
return idx;
}
static void
add_entity(entity)
ENTITY *entity;
{
if (the_schema.entities_tail == NULL)
the_schema.entities_tail = the_schema.entities_head = entity;
else {
the_schema.entities_tail->next = entity;
the_schema.entities_tail = entity;
}
}
static void
add_index(idx)
DB_INDEX *idx;
{
if (the_schema.indexes_tail == NULL)
the_schema.indexes_tail = the_schema.indexes_head = idx;
else {
the_schema.indexes_tail->next = idx;
the_schema.indexes_tail = idx;
}
}
static void
add_attribute(entity, attr)
ENTITY *entity;
ATTRIBUTE * attr;
{
if (entity->attributes_tail == NULL) {
entity->attributes_head = entity->attributes_tail = attr;
} else {
entity->attributes_tail->next = attr;
entity->attributes_tail = attr;
}
}
static ENTITY *
get_current_entity()
{
/*
* The entity under construction is always at the tail of the
* entity list
*/
ENTITY *entity = the_schema.entities_tail;
assert(entity);
return entity;
}
static ATTRIBUTE *
get_current_attribute()
{
ENTITY *entity;
ATTRIBUTE *attr;
/*
* The attribute under construction is always at the tail of
* the attribute list belonging to the entity at the tail of
* the entity list.
*/
entity = get_current_entity();
attr = entity->attributes_tail;
assert(attr);
return attr;
}
static ENTITY *
get_entity_by_name(sought_name)
char *sought_name;
{
ENTITY *e;
for (e = the_schema.entities_head; e; e = e->next)
if (strcasecmp(sought_name, e->name) == 0)
return e;
return NULL;
}
static ATTRIBUTE *
get_attribute_by_name(in_entity, sought_name)
ENTITY * in_entity;
char *sought_name;
{
ATTRIBUTE *a;
for (a = in_entity->attributes_head; a; a = a->next)
if (strcasecmp(sought_name, a->name) == 0)
return a;
return NULL;
}
static DB_INDEX *
get_index_by_name(sought_name)
char *sought_name;
{
DB_INDEX *idx;
for (idx = the_schema.indexes_head; idx; idx = idx->next)
if (strcasecmp(sought_name, idx->name) == 0)
return idx;
return NULL;
}
void
sqlite3BeginParse(Parse *pParse, int explainFlag)
{
COMPQUIET(pParse, NULL);
COMPQUIET(explainFlag, 0);
/* no-op */
}
void
bdb_create_database(Token *name, Parse *pParse) {
if (the_schema.environment.name != NULL)
sqlite3ErrorMsg(pParse,
"Encountered two CREATE DATABASE statements; only one \
is allowed");
if ((the_schema.environment.name =
name_from_token(name, pParse)) == NULL)
return;
the_schema.environment.line_number = line_number;
the_schema.environment.cache_size = 0;
the_schema.environment.transactional = txnflag;
the_parse_progress.last_event = PE_ENVIRONMENT;
}
void
sqlite3StartTable(pParse, pName1, pName2, isTemp, isView, isVirtual, noErr)
Parse *pParse; /* Parser context */
Token *pName1; /* First part of the name of the table or view */
Token *pName2; /* Second part of the name of the table or view */
int isTemp; /* True if this is a TEMP table */
int isView; /* True if this is a VIEW */
int isVirtual; /* True if this is a VIRTUAL table */
int noErr; /* Do nothing if table already exists */
{
char *name, *name2;
ENTITY *entity;
DB_INDEX *idx;
COMPQUIET(isTemp, 0);
COMPQUIET(isView, 0);
COMPQUIET(isVirtual, 0);
COMPQUIET(noErr, 0);
if (the_schema.environment.name == NULL) {
sqlite3ErrorMsg(pParse,
"Please specify CREATE DATABASE before CREATE TABLE");
return;
}
if ((name = name_from_token(pName1, pParse)) == NULL)
return;
/*
* We don't allow the second pName, for now. Note for future
* reference: if pName2 is set, then pName1 is the database
* name, and pname2 is the table name.
*/
name2 = NULL;
if (! (pName2 == NULL || pName2->n == 0) ) {
name2 = name_from_token(pName2, pParse);
sqlite3ErrorMsg(pParse,
"The table name must be simple: %s.%s",
name, name2);
goto free_allocated_on_error;
}
if ((entity = get_entity_by_name(name)) != NULL) {
sqlite3ErrorMsg(pParse,
"Found two declarations of a table named %s, at lines \
%d and %d",
name, entity->line_number, line_number);
goto free_allocated_on_error;
}
if ((idx = get_index_by_name(name)) != NULL) {
sqlite3ErrorMsg(pParse,
"The entity named %s on line %d has the same name as \
the index at line %d. This is not allowed.",
name, line_number, idx->line_number);
goto free_allocated_on_error;
}
if ((entity = make_entity(name, pParse)) == NULL)
goto free_allocated_on_error;
the_parse_progress.last_event = PE_ENTITY;
the_parse_progress.last_entity = entity;
add_entity(entity);
return;
free_allocated_on_error:
if (name != NULL) free(name);
if (name2 != NULL) free(name2);
}
void
sqlite3AddColumn(Parse *pParse, Token *pName)
{
ENTITY *entity;
ATTRIBUTE *attr;
char *name;
if ((name = name_from_token(pName, pParse)) == NULL)
return;
entity = get_current_entity();
if ((attr = get_attribute_by_name(entity, name)) != NULL) {
sqlite3ErrorMsg(pParse,
"The table %s contains two columns with the same name %s; \
this is not allowed.",
entity->name, name);
goto free_allocated_on_error;
}
if ((attr = make_attribute(name, pParse)) == NULL)
goto free_allocated_on_error;
the_parse_progress.last_event = PE_ATTRIBUTE;
the_parse_progress.last_attribute = attr;
add_attribute(entity, attr);
return;
free_allocated_on_error:
if (name != NULL) free(name);
}
static void
delete_spaces(char *s) {
char *p;
p = s;
while (*p) {
if (!isspace(*p))
*s++ = *p;
p++;
}
*s = *p;
}
/*
* This function maps SQL types into the closest equivalent
* available using plain C-language types.
*/
static ATTR_TYPE *
map_sql_type(pParse, token)
Parse *pParse;
char *token;
{
int dimension, scale, is_array, is_string;
size_t len;
char *p, *q;
ATTR_TYPE *type;
char *t;
char *ctype;
ctype = NULL;
type = NULL;
scale = 0;
len = strlen(token) + 1;
/*
* Make a copy of the original token, so that we can modify it
* to remove spaces, and break it up into multiple strings by
* inserting null characters.
*/
t = malloc(len);
if (t == NULL) {
sqlite3ErrorMsg(pParse, "Malloc failed");
return NULL;
}
memcpy(t, token, len);
dimension = 0;
is_array = 0;
is_string = 0;
delete_spaces(t); /* Remove any spaces that t might contain. */
/*
* If t contains a parenthesis, then it is a SQL type that has
* either a dimension, such as VARCHAR(255); or a precision,
* and possibly a scale, such as NUMBER(15, 2). We need to
* extract these values. Sqlite's parser does not decompose
* these tokens for us.
*/
if ((p = strchr(t, '(')) != NULL) {
/*
* Split the token into two strings by replacing the
* parenthesis with a null character. The pointer t
* is now a simple type name, and p points to the
* first parenthesized parameter.
*/
*p++ = '\0';
/*
* There should be a right paren somewhere.
* Actually, the parser probably guarantees this at least.
*/
if ((q = strchr(p, ')')) == NULL) {
sqlite3ErrorMsg(pParse,
"Missing right parenthesis in type expression %s\n",
token);
goto free_allocated_on_error;
}
/*
* null the paren, to make the parameter list a
* null-terminated string
*/
*q = '\0';
/*
* Is there a comma in the parameter list? If so,
* we'll isolate the first parameter
*/
if ((q = strchr(p, ',')) != NULL)
*q++ = '\0'; /* q now points to the second param */
dimension = atoi(p);
if (dimension == 0) {
sqlite3ErrorMsg(pParse,
"Non-numeric or zero size parameter in type \
expression %s\n",
token);
goto free_allocated_on_error;
}
/* If there was a second parameter, parse it */
scale = 0;
if (q != NULL && *q != '\0') {
if (strchr(q, ',') == NULL && isdigit(*q)) {
scale = atoi(q);
} else {
sqlite3ErrorMsg(pParse,
"Unexpected value for second parameter in \
type expression %s\n",
token);
goto free_allocated_on_error;
}
}
}
/* OK, now the simple mapping. */
q = t;
while (*q) {
*q = tolower(*q);
q++;
}
if (strcmp(t, "bin") == 0) {
ctype = "char";
is_array = 1;
} else if (strcmp(t, "varbin") == 0) {
ctype = "char";
is_array = 1;
} else if (strcmp(t, "char") == 0) {
ctype = "char";
is_array = 1;
is_string = 1;
} else if (strcmp(t, "varchar") == 0) {
ctype = "char";
is_array = 1;
is_string = 1;
} else if (strcmp(t, "varchar2") == 0) {
ctype = "char";
is_array = 1;
is_string = 1;
} else if (strcmp(t, "bit") == 0)
ctype = "char";
else if (strcmp(t, "tinyint") == 0)
ctype = "char";
else if (strcmp(t, "smallint") == 0)
ctype = "short";
else if (strcmp(t, "integer") == 0)
ctype = "int";
else if (strcmp(t, "int") == 0)
ctype = "int";
else if (strcmp(t, "bigint") == 0)
ctype = "long";
else if (strcmp(t, "real") == 0)
ctype = "float";
else if (strcmp(t, "double") == 0)
ctype = "double";
else if (strcmp(t, "float") == 0)
ctype = "double";
else if (strcmp(t, "decimal") == 0)
ctype = "double";
else if (strcmp(t, "numeric") == 0)
ctype = "double";
else if (strcmp(t, "number") == 0 ) {
/*
* Oracle Number type: if scale is zero, it's an integer.
* Otherwise, call it a floating point
*/
if (scale == 0) {
/* A 10 digit decimal needs a long */
if (dimension < 9)
ctype = "int";
else
ctype = "long";
} else {
if (dimension < 7 )
ctype = "float";
else
ctype = "double";
}
}
else {
sqlite3ErrorMsg(pParse,
"Unsupported type %s\n",
token);
goto free_allocated_on_error;
}
if (is_array) {
if (dimension < 1) {
sqlite3ErrorMsg(pParse,
"Zero dimension not allowed for %s",
token);
goto free_allocated_on_error;
}
if ((!is_string) && dimension > maxbinsz)
maxbinsz = dimension;
}
if (is_string && dimension < 2)
fprintf(stderr,
"Warning: dimension of string \"%s %s\" \
is too small to hold a null-terminated string.",
get_current_attribute()->name, token);
type = make_attrtype(token, ctype, dimension, is_array,
is_string, pParse);
free_allocated_on_error:
free(t);
/* Type will be NULL unless make_attrtype was called, and succeeded. */
return (type);
}
void
sqlite3AddColumnType(pParse, pType)
Parse *pParse;
Token *pType;
{
char *type;
ATTRIBUTE *attr;
if ((type = name_from_token(pType, pParse)) == NULL)
return;
attr = get_current_attribute();
attr->type = map_sql_type(pParse, type);
}
void
sqlite3AddPrimaryKey(pParse, pList, onError, autoInc, sortOrder)
Parse *pParse; /* Parsing context */
ExprList *pList; /* List of field names to be indexed */
int onError; /* What to do with a uniqueness conflict */
int autoInc; /* True if the AUTOINCREMENT keyword is present */
int sortOrder; /* SQLITE_SO_ASC or SQLITE_SO_DESC */
{
ENTITY *entity;
ATTRIBUTE *attr;
COMPQUIET(pParse, NULL);
COMPQUIET(pList, NULL);
COMPQUIET(onError, 0);
COMPQUIET(autoInc, 0);
COMPQUIET(sortOrder, 0);
entity = get_current_entity();
attr = get_current_attribute();
entity->primary_key = attr;
}
/*
* Add a new element to the end of an expression list. If pList is
* initially NULL, then create a new expression list.
*/
ExprList *
sqlite3ExprListAppend(pParse, pList, pExpr, pName)
Parse *pParse; /* Parsing context */
ExprList *pList; /* List to which to append. Might be NULL */
Expr *pExpr; /* Expression to be appended */
Token *pName; /* AS keyword for the expression */
{
if ( pList == NULL ) {
pList = calloc(1, sizeof(ExprList));
if (pList == NULL) {
sqlite3ErrorMsg(pParse, "Malloc failed");
return NULL;
}
}
if (pList->nAlloc <= pList->nExpr) {
struct ExprList_item *a;
int n = pList->nAlloc*2 + 4;
a = realloc(pList->a, n * sizeof(pList->a[0]));
if ( a == NULL ) {
sqlite3ErrorMsg(pParse, "Malloc failed");
return NULL;
}
pList->a = a;
pList->nAlloc = n;
}
if ( pExpr || pName ) {
struct ExprList_item *pItem = &pList->a[pList->nExpr++];
memset(pItem, 0, sizeof(*pItem));
if ((pItem->zName = name_from_token(pName, pParse)) == NULL) {
pList->nExpr --; /* undo allocation of pItem */
return pList;
}
pItem->pExpr = pExpr;
}
return pList;
}
void
sqlite3ExprListCheckLength(pParse, pElist, zObject)
Parse *pParse;
ExprList *pElist;
const char *zObject;
{
COMPQUIET(pParse, NULL);
COMPQUIET(pElist, NULL);
COMPQUIET(zObject, NULL);
/* no-op */
}
/*
* Append a new table name to the given SrcList. Create a new SrcList
* if need be. If pList is initially NULL, then create a new
* src list.
*
* We don't have a Parse object here, so we can't use name_from_token,
* or report an error via the usual Parse.rc mechanism. Just emit a
* message on stderr if there is a problem. Returning NULL from this
* function will cause the parser to fail, so any message we print
* here will be followed by the usual syntax error message.
*/
SrcList *
sqlite3SrcListAppend(db, pList, pTable, pDatabase)
sqlite3 *db; /* unused */
SrcList *pList; /* Append to this SrcList */
Token *pTable; /* Table to append */
Token *pDatabase; /* Database of the table, not used at this time */
{
struct SrcList_item *pItem;
char *table_name;
COMPQUIET(db, NULL);
COMPQUIET(pDatabase, NULL);
table_name = NULL;
if (pList == NULL) {
pList = calloc(1, sizeof(SrcList));
if (pList == NULL) {
fprintf(stderr, "Malloc failure\n");
return NULL;
}
pList->nAlloc = 1;
}
if (pList->nSrc >= pList->nAlloc) {
SrcList *pNew;
pList->nAlloc *= 2;
pNew = realloc(pList,
sizeof(*pList) + (pList->nAlloc-1)*sizeof(pList->a[0]));
if (pNew == NULL) {
fprintf(stderr, "Malloc failure\n");
return NULL;
}
pList = pNew;
}
pItem = &pList->a[pList->nSrc];
memset(pItem, 0, sizeof(pList->a[0]));
if (pTable == NULL || pTable->n <= 0) {
fprintf(stderr,
"Extracting name from a null or empty token\n");
return NULL;
}
table_name = calloc(1, pTable->n + 1);
if (table_name == NULL) {
fprintf(stderr, "Malloc failure\n");
return NULL;
}
memcpy(table_name, (char*)pTable->z, pTable->n);
pItem->zName = table_name;
pItem->zDatabase = NULL;
pItem->iCursor = -1;
pItem->isPopulated = 0;
pList->nSrc++;
return pList;
}
/*
* We parse, and allow, foreign key constraints, but currently do not
* use them.
*/
void
sqlite3CreateForeignKey(pParse, pFromCol, pTo, pToCol, flags)
Parse *pParse; /* Parsing context */
ExprList *pFromCol; /* Columns in that reference other table */
Token *pTo; /* Name of the other table */
ExprList *pToCol; /* Columns in the other table */
int flags; /* Conflict resolution algorithms. */
{
char * s;
COMPQUIET(flags, 0);
if (debug) {
if ((s = name_from_token(pTo, pParse)) == NULL)
return;
fprintf(stderr, "Foreign Key Constraint not implemented: \
FromTable %s FromCol %s ToTable %s ToCol %s\n",
get_current_entity()->name, pFromCol->a->zName,
s, pToCol->a->zName);
free(s);
}
}
void
sqlite3DeferForeignKey(Parse *pParse, int isDeferred)
{
COMPQUIET(pParse, NULL);
COMPQUIET(isDeferred, 0);
/* no-op */
}
void
sqlite3CreateIndex(pParse, pName1, pName2, pTblName, pList,
onError, pStart, pEnd, sortOrder, ifNotExist)
Parse *pParse; /* All information about this parse */
Token *pName1; /* First part of index name. May be NULL */
Token *pName2; /* Second part of index name. May be NULL */
SrcList *pTblName; /* Table to index. Use pParse->pNewTable if 0 */
ExprList *pList; /* A list of columns to be indexed */
int onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
Token *pStart; /* The CREATE token that begins this statement */
Token *pEnd; /* The ")" that closes the CREATE INDEX statement */
int sortOrder; /* Sort order of primary key when pList==NULL */
int ifNotExist; /* Omit error if index already exists */
{
ENTITY *e, *extra_entity;
ATTRIBUTE *a;
DB_INDEX *idx;
char *entity_name, *attribute_name, *index_name;
COMPQUIET(pName2, NULL);
COMPQUIET(onError, 0);
COMPQUIET(pStart, NULL);
COMPQUIET(pEnd, NULL);
COMPQUIET(sortOrder, 0);
COMPQUIET(ifNotExist, 0);
entity_name = pTblName->a->zName;
attribute_name = pList->a->zName;
if ((index_name = name_from_token(pName1, pParse)) == NULL)
return;
e = get_entity_by_name(entity_name);
if (e == NULL) {
sqlite3ErrorMsg(pParse, "Index %s names unknown table %s",
index_name, entity_name);
goto free_allocated_on_error;
}
a = get_attribute_by_name(e, attribute_name);
if (a == NULL) {
sqlite3ErrorMsg(pParse,
"Index %s names unknown column %s in table %s",
index_name, attribute_name, entity_name);
goto free_allocated_on_error;;
}
if ((idx = get_index_by_name(index_name)) != NULL) {
sqlite3ErrorMsg(pParse,
"Found two declarations of an index named %s, \
at lines %d and %d",
index_name, idx->line_number, line_number);
goto free_allocated_on_error;;
}
if ((extra_entity = get_entity_by_name(index_name)) != NULL) {
sqlite3ErrorMsg(pParse,
"The index named %s on line %d has the same name as the \
table at line %d. This is not allowed.",
index_name, line_number,
extra_entity->line_number);
goto free_allocated_on_error;
}
if ((idx = make_index(index_name, e, a, pParse)) == NULL)
goto free_allocated_on_error;
the_parse_progress.last_event = PE_INDEX;
the_parse_progress.last_index = idx;
add_index(idx);
return;
free_allocated_on_error:
if (index_name != NULL)
free(index_name);
}
void sqlite3EndTable(pParse, pCons, pEnd, pSelect)
Parse *pParse; /* Parse context */
Token *pCons; /* The ',' token after the last column defn. */
Token *pEnd; /* The final ')' token in the CREATE TABLE */
Select *pSelect; /* Select from a "CREATE ... AS SELECT" */
{
COMPQUIET(pParse, NULL);
COMPQUIET(pCons, NULL);
COMPQUIET(pEnd, NULL);
COMPQUIET(pSelect, NULL);
the_parse_progress.last_event = PE_ENTITY;
}
void
sqlite3FinishCoding(pParse)
Parse *pParse;
{
COMPQUIET(pParse, NULL);
/* no-op */
}
|