database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-22 21:53:06 +03:00
Code Activity

Separate the key word list that lived in keywords.c into a new header file

Browse Source 
kwlist.h, to avoid having to link the backend object file into other programs
like pg_dump.  We can now simply symlink a single source file from the backend
(kwlookup.c, containing the shared routine ScanKeywordLookup) and compile it
locally, which is a lot cleaner.
This commit is contained in:
Alvaro Herrera
2009-03-07 00:13:58 +00:00
parent 00ce73778b
commit 328d235571
11 changed files with 624 additions and 534 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/backend/parser/Makefile
View File

@@ -2,7 +2,7 @@
#
# Makefile for parser
#
# $PostgreSQL: pgsql/src/backend/parser/Makefile,v 1.48 2008/10/04 21:56:54 tgl Exp $
# $PostgreSQL: pgsql/src/backend/parser/Makefile,v 1.49 2009/03/07 00:13:57 alvherre Exp $
#
#-------------------------------------------------------------------------
@@ -14,7 +14,7 @@ override CPPFLAGS := -I$(srcdir) $(CPPFLAGS)
OBJS= analyze.o gram.o keywords.o parser.o parse_agg.o parse_cte.o parse_clause.o \
parse_expr.o parse_func.o parse_node.o parse_oper.o parse_relation.o \
parse_type.o parse_coerce.o parse_target.o parse_utilcmd.o scansup.o
parse_type.o parse_coerce.o parse_target.o parse_utilcmd.o scansup.o kwlookup.o
FLEXFLAGS = -CF

6
src/backend/parser/gram.y
View File

@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.659 2009/02/24 10:06:33 petere Exp $
* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.660 2009/03/07 00:13:57 alvherre Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -423,7 +423,7 @@ static TypeName *TableFuncTypeName(List *columns);
/*
* If you make any token changes, update the keyword table in
* parser/keywords.c and add new keywords to the appropriate one of
* src/include/parser/kwlist.h and add new keywords to the appropriate one of
* the reserved-or-not-so-reserved keyword lists, below; search
* this file for "Name classification hierarchy".
*/
@@ -516,7 +516,7 @@ static TypeName *TableFuncTypeName(List *columns);
ZONE
/* The grammar thinks these are keywords, but they are not in the keywords.c
/* The grammar thinks these are keywords, but they are not in the kwlist.h
* list and so can never be entered directly. The filter in parser.c
* creates these tokens when required.
*/

488
src/backend/parser/keywords.c
View File

@@ -3,501 +3,29 @@
* keywords.c
* lexical token lookup for key words in PostgreSQL
*
* NB: This file is also used by pg_dump.
*
*
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/keywords.c,v 1.210 2009/02/24 10:06:33 petere Exp $
* $PostgreSQL: pgsql/src/backend/parser/keywords.c,v 1.211 2009/03/07 00:13:57 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
/* Use c.h so that this file can be built in either frontend or backend */
#include "c.h"
#include <ctype.h>
/*
* This macro definition overrides the YYSTYPE union definition in gram.h.
* We don't need that struct in this file, and including the real definition
* would require sucking in some backend-only include files.
*/
#define YYSTYPE int
#include "nodes/nodes.h"
#include "nodes/parsenodes.h"
#include "parser/keywords.h"
#ifndef ECPG_COMPILE
#include "parser/gram.h"
#else
#include "preproc.h"
#endif
/*
* List of keyword (name, token-value, category) entries.
*
* !!WARNING!!: This list must be sorted by ASCII name, because binary
* search is used to locate entries.
*/
#define PG_KEYWORD(a,b,c) {a,b,c},
const ScanKeyword ScanKeywords[] = {
/* name, value, category */
{"abort", ABORT_P, UNRESERVED_KEYWORD},
{"absolute", ABSOLUTE_P, UNRESERVED_KEYWORD},
{"access", ACCESS, UNRESERVED_KEYWORD},
{"action", ACTION, UNRESERVED_KEYWORD},
{"add", ADD_P, UNRESERVED_KEYWORD},
{"admin", ADMIN, UNRESERVED_KEYWORD},
{"after", AFTER, UNRESERVED_KEYWORD},
{"aggregate", AGGREGATE, UNRESERVED_KEYWORD},
{"all", ALL, RESERVED_KEYWORD},
{"also", ALSO, UNRESERVED_KEYWORD},
{"alter", ALTER, UNRESERVED_KEYWORD},
{"always", ALWAYS, UNRESERVED_KEYWORD},
{"analyse", ANALYSE, RESERVED_KEYWORD}, /* British spelling */
{"analyze", ANALYZE, RESERVED_KEYWORD},
{"and", AND, RESERVED_KEYWORD},
{"any", ANY, RESERVED_KEYWORD},
{"array", ARRAY, RESERVED_KEYWORD},
{"as", AS, RESERVED_KEYWORD},
{"asc", ASC, RESERVED_KEYWORD},
{"assertion", ASSERTION, UNRESERVED_KEYWORD},
{"assignment", ASSIGNMENT, UNRESERVED_KEYWORD},
{"asymmetric", ASYMMETRIC, RESERVED_KEYWORD},
{"at", AT, UNRESERVED_KEYWORD},
{"authorization", AUTHORIZATION, TYPE_FUNC_NAME_KEYWORD},
{"backward", BACKWARD, UNRESERVED_KEYWORD},
{"before", BEFORE, UNRESERVED_KEYWORD},
{"begin", BEGIN_P, UNRESERVED_KEYWORD},
{"between", BETWEEN, TYPE_FUNC_NAME_KEYWORD},
{"bigint", BIGINT, COL_NAME_KEYWORD},
{"binary", BINARY, TYPE_FUNC_NAME_KEYWORD},
{"bit", BIT, COL_NAME_KEYWORD},
{"boolean", BOOLEAN_P, COL_NAME_KEYWORD},
{"both", BOTH, RESERVED_KEYWORD},
{"by", BY, UNRESERVED_KEYWORD},
{"cache", CACHE, UNRESERVED_KEYWORD},
{"called", CALLED, UNRESERVED_KEYWORD},
{"cascade", CASCADE, UNRESERVED_KEYWORD},
{"cascaded", CASCADED, UNRESERVED_KEYWORD},
{"case", CASE, RESERVED_KEYWORD},
{"cast", CAST, RESERVED_KEYWORD},
{"catalog", CATALOG_P, UNRESERVED_KEYWORD},
{"chain", CHAIN, UNRESERVED_KEYWORD},
{"char", CHAR_P, COL_NAME_KEYWORD},
{"character", CHARACTER, COL_NAME_KEYWORD},
{"characteristics", CHARACTERISTICS, UNRESERVED_KEYWORD},
{"check", CHECK, RESERVED_KEYWORD},
{"checkpoint", CHECKPOINT, UNRESERVED_KEYWORD},
{"class", CLASS, UNRESERVED_KEYWORD},
{"close", CLOSE, UNRESERVED_KEYWORD},
{"cluster", CLUSTER, UNRESERVED_KEYWORD},
{"coalesce", COALESCE, COL_NAME_KEYWORD},
{"collate", COLLATE, RESERVED_KEYWORD},
{"column", COLUMN, RESERVED_KEYWORD},
{"comment", COMMENT, UNRESERVED_KEYWORD},
{"commit", COMMIT, UNRESERVED_KEYWORD},
{"committed", COMMITTED, UNRESERVED_KEYWORD},
{"concurrently", CONCURRENTLY, UNRESERVED_KEYWORD},
{"configuration", CONFIGURATION, UNRESERVED_KEYWORD},
{"connection", CONNECTION, UNRESERVED_KEYWORD},
{"constraint", CONSTRAINT, RESERVED_KEYWORD},
{"constraints", CONSTRAINTS, UNRESERVED_KEYWORD},
{"content", CONTENT_P, UNRESERVED_KEYWORD},
{"continue", CONTINUE_P, UNRESERVED_KEYWORD},
{"conversion", CONVERSION_P, UNRESERVED_KEYWORD},
{"copy", COPY, UNRESERVED_KEYWORD},
{"cost", COST, UNRESERVED_KEYWORD},
{"create", CREATE, RESERVED_KEYWORD},
{"createdb", CREATEDB, UNRESERVED_KEYWORD},
{"createrole", CREATEROLE, UNRESERVED_KEYWORD},
{"createuser", CREATEUSER, UNRESERVED_KEYWORD},
{"cross", CROSS, TYPE_FUNC_NAME_KEYWORD},
{"csv", CSV, UNRESERVED_KEYWORD},
{"ctype", CTYPE, UNRESERVED_KEYWORD},
{"current", CURRENT_P, UNRESERVED_KEYWORD},
{"current_catalog", CURRENT_CATALOG, RESERVED_KEYWORD},
{"current_date", CURRENT_DATE, RESERVED_KEYWORD},
{"current_role", CURRENT_ROLE, RESERVED_KEYWORD},
{"current_schema", CURRENT_SCHEMA, TYPE_FUNC_NAME_KEYWORD},
{"current_time", CURRENT_TIME, RESERVED_KEYWORD},
{"current_timestamp", CURRENT_TIMESTAMP, RESERVED_KEYWORD},
{"current_user", CURRENT_USER, RESERVED_KEYWORD},
{"cursor", CURSOR, UNRESERVED_KEYWORD},
{"cycle", CYCLE, UNRESERVED_KEYWORD},
{"data", DATA_P, UNRESERVED_KEYWORD},
{"database", DATABASE, UNRESERVED_KEYWORD},
{"day", DAY_P, UNRESERVED_KEYWORD},
{"deallocate", DEALLOCATE, UNRESERVED_KEYWORD},
{"dec", DEC, COL_NAME_KEYWORD},
{"decimal", DECIMAL_P, COL_NAME_KEYWORD},
{"declare", DECLARE, UNRESERVED_KEYWORD},
{"default", DEFAULT, RESERVED_KEYWORD},
{"defaults", DEFAULTS, UNRESERVED_KEYWORD},
{"deferrable", DEFERRABLE, RESERVED_KEYWORD},
{"deferred", DEFERRED, UNRESERVED_KEYWORD},
{"definer", DEFINER, UNRESERVED_KEYWORD},
{"delete", DELETE_P, UNRESERVED_KEYWORD},
{"delimiter", DELIMITER, UNRESERVED_KEYWORD},
{"delimiters", DELIMITERS, UNRESERVED_KEYWORD},
{"desc", DESC, RESERVED_KEYWORD},
{"dictionary", DICTIONARY, UNRESERVED_KEYWORD},
{"disable", DISABLE_P, UNRESERVED_KEYWORD},
{"discard", DISCARD, UNRESERVED_KEYWORD},
{"distinct", DISTINCT, RESERVED_KEYWORD},
{"do", DO, RESERVED_KEYWORD},
{"document", DOCUMENT_P, UNRESERVED_KEYWORD},
{"domain", DOMAIN_P, UNRESERVED_KEYWORD},
{"double", DOUBLE_P, UNRESERVED_KEYWORD},
{"drop", DROP, UNRESERVED_KEYWORD},
{"each", EACH, UNRESERVED_KEYWORD},
{"else", ELSE, RESERVED_KEYWORD},
{"enable", ENABLE_P, UNRESERVED_KEYWORD},
{"encoding", ENCODING, UNRESERVED_KEYWORD},
{"encrypted", ENCRYPTED, UNRESERVED_KEYWORD},
{"end", END_P, RESERVED_KEYWORD},
{"enum", ENUM_P, UNRESERVED_KEYWORD},
{"escape", ESCAPE, UNRESERVED_KEYWORD},
{"except", EXCEPT, RESERVED_KEYWORD},
{"excluding", EXCLUDING, UNRESERVED_KEYWORD},
{"exclusive", EXCLUSIVE, UNRESERVED_KEYWORD},
{"execute", EXECUTE, UNRESERVED_KEYWORD},
{"exists", EXISTS, COL_NAME_KEYWORD},
{"explain", EXPLAIN, UNRESERVED_KEYWORD},
{"external", EXTERNAL, UNRESERVED_KEYWORD},
{"extract", EXTRACT, COL_NAME_KEYWORD},
{"false", FALSE_P, RESERVED_KEYWORD},
{"family", FAMILY, UNRESERVED_KEYWORD},
{"fetch", FETCH, RESERVED_KEYWORD},
{"first", FIRST_P, UNRESERVED_KEYWORD},
{"float", FLOAT_P, COL_NAME_KEYWORD},
{"following", FOLLOWING, UNRESERVED_KEYWORD},
{"for", FOR, RESERVED_KEYWORD},
{"force", FORCE, UNRESERVED_KEYWORD},
{"foreign", FOREIGN, RESERVED_KEYWORD},
{"forward", FORWARD, UNRESERVED_KEYWORD},
{"freeze", FREEZE, TYPE_FUNC_NAME_KEYWORD},
{"from", FROM, RESERVED_KEYWORD},
{"full", FULL, TYPE_FUNC_NAME_KEYWORD},
{"function", FUNCTION, UNRESERVED_KEYWORD},
{"global", GLOBAL, UNRESERVED_KEYWORD},
{"grant", GRANT, RESERVED_KEYWORD},
{"granted", GRANTED, UNRESERVED_KEYWORD},
{"greatest", GREATEST, COL_NAME_KEYWORD},
{"group", GROUP_P, RESERVED_KEYWORD},
{"handler", HANDLER, UNRESERVED_KEYWORD},
{"having", HAVING, RESERVED_KEYWORD},
{"header", HEADER_P, UNRESERVED_KEYWORD},
{"hold", HOLD, UNRESERVED_KEYWORD},
{"hour", HOUR_P, UNRESERVED_KEYWORD},
{"identity", IDENTITY_P, UNRESERVED_KEYWORD},
{"if", IF_P, UNRESERVED_KEYWORD},
{"ilike", ILIKE, TYPE_FUNC_NAME_KEYWORD},
{"immediate", IMMEDIATE, UNRESERVED_KEYWORD},
{"immutable", IMMUTABLE, UNRESERVED_KEYWORD},
{"implicit", IMPLICIT_P, UNRESERVED_KEYWORD},
{"in", IN_P, RESERVED_KEYWORD},
{"including", INCLUDING, UNRESERVED_KEYWORD},
{"increment", INCREMENT, UNRESERVED_KEYWORD},
{"index", INDEX, UNRESERVED_KEYWORD},
{"indexes", INDEXES, UNRESERVED_KEYWORD},
{"inherit", INHERIT, UNRESERVED_KEYWORD},
{"inherits", INHERITS, UNRESERVED_KEYWORD},
{"initially", INITIALLY, RESERVED_KEYWORD},
{"inner", INNER_P, TYPE_FUNC_NAME_KEYWORD},
{"inout", INOUT, COL_NAME_KEYWORD},
{"input", INPUT_P, UNRESERVED_KEYWORD},
{"insensitive", INSENSITIVE, UNRESERVED_KEYWORD},
{"insert", INSERT, UNRESERVED_KEYWORD},
{"instead", INSTEAD, UNRESERVED_KEYWORD},
{"int", INT_P, COL_NAME_KEYWORD},
{"integer", INTEGER, COL_NAME_KEYWORD},
{"intersect", INTERSECT, RESERVED_KEYWORD},
{"interval", INTERVAL, COL_NAME_KEYWORD},
{"into", INTO, RESERVED_KEYWORD},
{"invoker", INVOKER, UNRESERVED_KEYWORD},
{"is", IS, TYPE_FUNC_NAME_KEYWORD},
{"isnull", ISNULL, TYPE_FUNC_NAME_KEYWORD},
{"isolation", ISOLATION, UNRESERVED_KEYWORD},
{"join", JOIN, TYPE_FUNC_NAME_KEYWORD},
{"key", KEY, UNRESERVED_KEYWORD},
{"lancompiler", LANCOMPILER, UNRESERVED_KEYWORD},
{"language", LANGUAGE, UNRESERVED_KEYWORD},
{"large", LARGE_P, UNRESERVED_KEYWORD},
{"last", LAST_P, UNRESERVED_KEYWORD},
{"leading", LEADING, RESERVED_KEYWORD},
{"least", LEAST, COL_NAME_KEYWORD},
{"left", LEFT, TYPE_FUNC_NAME_KEYWORD},
{"level", LEVEL, UNRESERVED_KEYWORD},
{"like", LIKE, TYPE_FUNC_NAME_KEYWORD},
{"limit", LIMIT, RESERVED_KEYWORD},
{"listen", LISTEN, UNRESERVED_KEYWORD},
{"load", LOAD, UNRESERVED_KEYWORD},
{"local", LOCAL, UNRESERVED_KEYWORD},
{"localtime", LOCALTIME, RESERVED_KEYWORD},
{"localtimestamp", LOCALTIMESTAMP, RESERVED_KEYWORD},
{"location", LOCATION, UNRESERVED_KEYWORD},
{"lock", LOCK_P, UNRESERVED_KEYWORD},
{"login", LOGIN_P, UNRESERVED_KEYWORD},
{"mapping", MAPPING, UNRESERVED_KEYWORD},
{"match", MATCH, UNRESERVED_KEYWORD},
{"maxvalue", MAXVALUE, UNRESERVED_KEYWORD},
{"minute", MINUTE_P, UNRESERVED_KEYWORD},
{"minvalue", MINVALUE, UNRESERVED_KEYWORD},
{"mode", MODE, UNRESERVED_KEYWORD},
{"month", MONTH_P, UNRESERVED_KEYWORD},
{"move", MOVE, UNRESERVED_KEYWORD},
{"name", NAME_P, UNRESERVED_KEYWORD},
{"names", NAMES, UNRESERVED_KEYWORD},
{"national", NATIONAL, COL_NAME_KEYWORD},
{"natural", NATURAL, TYPE_FUNC_NAME_KEYWORD},
{"nchar", NCHAR, COL_NAME_KEYWORD},
{"new", NEW, RESERVED_KEYWORD},
{"next", NEXT, UNRESERVED_KEYWORD},
{"no", NO, UNRESERVED_KEYWORD},
{"nocreatedb", NOCREATEDB, UNRESERVED_KEYWORD},
{"nocreaterole", NOCREATEROLE, UNRESERVED_KEYWORD},
{"nocreateuser", NOCREATEUSER, UNRESERVED_KEYWORD},
{"noinherit", NOINHERIT, UNRESERVED_KEYWORD},
{"nologin", NOLOGIN_P, UNRESERVED_KEYWORD},
{"none", NONE, COL_NAME_KEYWORD},
{"nosuperuser", NOSUPERUSER, UNRESERVED_KEYWORD},
{"not", NOT, RESERVED_KEYWORD},
{"nothing", NOTHING, UNRESERVED_KEYWORD},
{"notify", NOTIFY, UNRESERVED_KEYWORD},
{"notnull", NOTNULL, TYPE_FUNC_NAME_KEYWORD},
{"nowait", NOWAIT, UNRESERVED_KEYWORD},
{"null", NULL_P, RESERVED_KEYWORD},
{"nullif", NULLIF, COL_NAME_KEYWORD},
{"nulls", NULLS_P, UNRESERVED_KEYWORD},
{"numeric", NUMERIC, COL_NAME_KEYWORD},
{"object", OBJECT_P, UNRESERVED_KEYWORD},
{"of", OF, UNRESERVED_KEYWORD},
{"off", OFF, RESERVED_KEYWORD},
{"offset", OFFSET, RESERVED_KEYWORD},
{"oids", OIDS, UNRESERVED_KEYWORD},
{"old", OLD, RESERVED_KEYWORD},
{"on", ON, RESERVED_KEYWORD},
{"only", ONLY, RESERVED_KEYWORD},
{"operator", OPERATOR, UNRESERVED_KEYWORD},
{"option", OPTION, UNRESERVED_KEYWORD},
{"options", OPTIONS, UNRESERVED_KEYWORD},
{"or", OR, RESERVED_KEYWORD},
{"order", ORDER, RESERVED_KEYWORD},
{"out", OUT_P, COL_NAME_KEYWORD},
{"outer", OUTER_P, TYPE_FUNC_NAME_KEYWORD},
{"over", OVER, TYPE_FUNC_NAME_KEYWORD},
{"overlaps", OVERLAPS, TYPE_FUNC_NAME_KEYWORD},
{"overlay", OVERLAY, COL_NAME_KEYWORD},
{"owned", OWNED, UNRESERVED_KEYWORD},
{"owner", OWNER, UNRESERVED_KEYWORD},
{"parser", PARSER, UNRESERVED_KEYWORD},
{"partial", PARTIAL, UNRESERVED_KEYWORD},
{"partition", PARTITION, UNRESERVED_KEYWORD},
{"password", PASSWORD, UNRESERVED_KEYWORD},
{"placing", PLACING, RESERVED_KEYWORD},
{"plans", PLANS, UNRESERVED_KEYWORD},
{"position", POSITION, COL_NAME_KEYWORD},
{"preceding", PRECEDING, UNRESERVED_KEYWORD},
{"precision", PRECISION, COL_NAME_KEYWORD},
{"prepare", PREPARE, UNRESERVED_KEYWORD},
{"prepared", PREPARED, UNRESERVED_KEYWORD},
{"preserve", PRESERVE, UNRESERVED_KEYWORD},
{"primary", PRIMARY, RESERVED_KEYWORD},
{"prior", PRIOR, UNRESERVED_KEYWORD},
{"privileges", PRIVILEGES, UNRESERVED_KEYWORD},
{"procedural", PROCEDURAL, UNRESERVED_KEYWORD},
{"procedure", PROCEDURE, UNRESERVED_KEYWORD},
{"quote", QUOTE, UNRESERVED_KEYWORD},
{"range", RANGE, UNRESERVED_KEYWORD},
{"read", READ, UNRESERVED_KEYWORD},
{"real", REAL, COL_NAME_KEYWORD},
{"reassign", REASSIGN, UNRESERVED_KEYWORD},
{"recheck", RECHECK, UNRESERVED_KEYWORD},
{"recursive", RECURSIVE, UNRESERVED_KEYWORD},
{"references", REFERENCES, RESERVED_KEYWORD},
{"reindex", REINDEX, UNRESERVED_KEYWORD},
{"relative", RELATIVE_P, UNRESERVED_KEYWORD},
{"release", RELEASE, UNRESERVED_KEYWORD},
{"rename", RENAME, UNRESERVED_KEYWORD},
{"repeatable", REPEATABLE, UNRESERVED_KEYWORD},
{"replace", REPLACE, UNRESERVED_KEYWORD},
{"replica", REPLICA, UNRESERVED_KEYWORD},
{"reset", RESET, UNRESERVED_KEYWORD},
{"restart", RESTART, UNRESERVED_KEYWORD},
{"restrict", RESTRICT, UNRESERVED_KEYWORD},
{"returning", RETURNING, RESERVED_KEYWORD},
{"returns", RETURNS, UNRESERVED_KEYWORD},
{"revoke", REVOKE, UNRESERVED_KEYWORD},
{"right", RIGHT, TYPE_FUNC_NAME_KEYWORD},
{"role", ROLE, UNRESERVED_KEYWORD},
{"rollback", ROLLBACK, UNRESERVED_KEYWORD},
{"row", ROW, COL_NAME_KEYWORD},
{"rows", ROWS, UNRESERVED_KEYWORD},
{"rule", RULE, UNRESERVED_KEYWORD},
{"savepoint", SAVEPOINT, UNRESERVED_KEYWORD},
{"schema", SCHEMA, UNRESERVED_KEYWORD},
{"scroll", SCROLL, UNRESERVED_KEYWORD},
{"search", SEARCH, UNRESERVED_KEYWORD},
{"second", SECOND_P, UNRESERVED_KEYWORD},
{"security", SECURITY, UNRESERVED_KEYWORD},
{"select", SELECT, RESERVED_KEYWORD},
{"sequence", SEQUENCE, UNRESERVED_KEYWORD},
{"serializable", SERIALIZABLE, UNRESERVED_KEYWORD},
{"server", SERVER, UNRESERVED_KEYWORD},
{"session", SESSION, UNRESERVED_KEYWORD},
{"session_user", SESSION_USER, RESERVED_KEYWORD},
{"set", SET, UNRESERVED_KEYWORD},
{"setof", SETOF, COL_NAME_KEYWORD},
{"share", SHARE, UNRESERVED_KEYWORD},
{"show", SHOW, UNRESERVED_KEYWORD},
{"similar", SIMILAR, TYPE_FUNC_NAME_KEYWORD},
{"simple", SIMPLE, UNRESERVED_KEYWORD},
{"smallint", SMALLINT, COL_NAME_KEYWORD},
{"some", SOME, RESERVED_KEYWORD},
{"stable", STABLE, UNRESERVED_KEYWORD},
{"standalone", STANDALONE_P, UNRESERVED_KEYWORD},
{"start", START, UNRESERVED_KEYWORD},
{"statement", STATEMENT, UNRESERVED_KEYWORD},
{"statistics", STATISTICS, UNRESERVED_KEYWORD},
{"stdin", STDIN, UNRESERVED_KEYWORD},
{"stdout", STDOUT, UNRESERVED_KEYWORD},
{"storage", STORAGE, UNRESERVED_KEYWORD},
{"strict", STRICT_P, UNRESERVED_KEYWORD},
{"strip", STRIP_P, UNRESERVED_KEYWORD},
{"substring", SUBSTRING, COL_NAME_KEYWORD},
{"superuser", SUPERUSER_P, UNRESERVED_KEYWORD},
{"symmetric", SYMMETRIC, RESERVED_KEYWORD},
{"sysid", SYSID, UNRESERVED_KEYWORD},
{"system", SYSTEM_P, UNRESERVED_KEYWORD},
{"table", TABLE, RESERVED_KEYWORD},
{"tablespace", TABLESPACE, UNRESERVED_KEYWORD},
{"temp", TEMP, UNRESERVED_KEYWORD},
{"template", TEMPLATE, UNRESERVED_KEYWORD},
{"temporary", TEMPORARY, UNRESERVED_KEYWORD},
{"text", TEXT_P, UNRESERVED_KEYWORD},
{"then", THEN, RESERVED_KEYWORD},
{"time", TIME, COL_NAME_KEYWORD},
{"timestamp", TIMESTAMP, COL_NAME_KEYWORD},
{"to", TO, RESERVED_KEYWORD},
{"trailing", TRAILING, RESERVED_KEYWORD},
{"transaction", TRANSACTION, UNRESERVED_KEYWORD},
{"treat", TREAT, COL_NAME_KEYWORD},
{"trigger", TRIGGER, UNRESERVED_KEYWORD},
{"trim", TRIM, COL_NAME_KEYWORD},
{"true", TRUE_P, RESERVED_KEYWORD},
{"truncate", TRUNCATE, UNRESERVED_KEYWORD},
{"trusted", TRUSTED, UNRESERVED_KEYWORD},
{"type", TYPE_P, UNRESERVED_KEYWORD},
{"unbounded", UNBOUNDED, UNRESERVED_KEYWORD},
{"uncommitted", UNCOMMITTED, UNRESERVED_KEYWORD},
{"unencrypted", UNENCRYPTED, UNRESERVED_KEYWORD},
{"union", UNION, RESERVED_KEYWORD},
{"unique", UNIQUE, RESERVED_KEYWORD},
{"unknown", UNKNOWN, UNRESERVED_KEYWORD},
{"unlisten", UNLISTEN, UNRESERVED_KEYWORD},
{"until", UNTIL, UNRESERVED_KEYWORD},
{"update", UPDATE, UNRESERVED_KEYWORD},
{"user", USER, RESERVED_KEYWORD},
{"using", USING, RESERVED_KEYWORD},
{"vacuum", VACUUM, UNRESERVED_KEYWORD},
{"valid", VALID, UNRESERVED_KEYWORD},
{"validator", VALIDATOR, UNRESERVED_KEYWORD},
{"value", VALUE_P, UNRESERVED_KEYWORD},
{"values", VALUES, COL_NAME_KEYWORD},
{"varchar", VARCHAR, COL_NAME_KEYWORD},
{"variadic", VARIADIC, RESERVED_KEYWORD},
{"varying", VARYING, UNRESERVED_KEYWORD},
{"verbose", VERBOSE, TYPE_FUNC_NAME_KEYWORD},
{"version", VERSION_P, UNRESERVED_KEYWORD},
{"view", VIEW, UNRESERVED_KEYWORD},
{"volatile", VOLATILE, UNRESERVED_KEYWORD},
{"when", WHEN, RESERVED_KEYWORD},
{"where", WHERE, RESERVED_KEYWORD},
{"whitespace", WHITESPACE_P, UNRESERVED_KEYWORD},
{"window", WINDOW, RESERVED_KEYWORD},
{"with", WITH, RESERVED_KEYWORD},
{"without", WITHOUT, UNRESERVED_KEYWORD},
{"work", WORK, UNRESERVED_KEYWORD},
{"wrapper", WRAPPER, UNRESERVED_KEYWORD},
{"write", WRITE, UNRESERVED_KEYWORD},
{"xml", XML_P, UNRESERVED_KEYWORD},
{"xmlattributes", XMLATTRIBUTES, COL_NAME_KEYWORD},
{"xmlconcat", XMLCONCAT, COL_NAME_KEYWORD},
{"xmlelement", XMLELEMENT, COL_NAME_KEYWORD},
{"xmlforest", XMLFOREST, COL_NAME_KEYWORD},
{"xmlparse", XMLPARSE, COL_NAME_KEYWORD},
{"xmlpi", XMLPI, COL_NAME_KEYWORD},
{"xmlroot", XMLROOT, COL_NAME_KEYWORD},
{"xmlserialize", XMLSERIALIZE, COL_NAME_KEYWORD},
{"year", YEAR_P, UNRESERVED_KEYWORD},
{"yes", YES_P, UNRESERVED_KEYWORD},
{"zone", ZONE, UNRESERVED_KEYWORD},
#include "parser/kwlist.h"
};
/* End of ScanKeywords, for use elsewhere */
const ScanKeyword *LastScanKeyword = endof(ScanKeywords);
/*
* ScanKeywordLookup - see if a given word is a keyword
*
* Returns a pointer to the ScanKeyword table entry, or NULL if no match.
*
* The match is done case-insensitively. Note that we deliberately use a
* dumbed-down case conversion that will only translate 'A'-'Z' into 'a'-'z',
* even if we are in a locale where tolower() would produce more or different
* translations. This is to conform to the SQL99 spec, which says that
* keywords are to be matched in this way even though non-keyword identifiers
* receive a different case-normalization mapping.
*/
const ScanKeyword *
ScanKeywordLookup(const char *text)
{
int len,
i;
char word[NAMEDATALEN];
const ScanKeyword *low;
const ScanKeyword *high;
len = strlen(text);
/* We assume all keywords are shorter than NAMEDATALEN. */
if (len >= NAMEDATALEN)
return NULL;
/*
* Apply an ASCII-only downcasing. We must not use tolower() since it may
* produce the wrong translation in some locales (eg, Turkish).
*/
for (i = 0; i < len; i++)
{
char ch = text[i];
if (ch >= 'A' && ch <= 'Z')
ch += 'a' - 'A';
word[i] = ch;
}
word[len] = '\0';
/*
* Now do a binary search using plain strcmp() comparison.
*/
low = &ScanKeywords[0];
high = endof(ScanKeywords) - 1;
while (low <= high)
{
const ScanKeyword *middle;
int difference;
middle = low + (high - low) / 2;
difference = strcmp(middle->name, word);
if (difference == 0)
return middle;
else if (difference < 0)
low = middle + 1;
else
high = middle - 1;
}
return NULL;
}

87
src/backend/parser/kwlookup.c Normal file
View File

@@ -0,0 +1,87 @@
/*-------------------------------------------------------------------------
*
* kwlookup.c
* lexical token lookup for key words in PostgreSQL
*
* NB - this file is also used by ECPG and several frontend programs in
* src/bin/ including pg_dump and psql
*
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/kwlookup.c,v 2.1 2009/03/07 00:13:58 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
/* use c.h so this can be built as either frontend or backend */
#include "c.h"
#include <ctype.h>
#include "parser/keywords.h"
/*
* ScanKeywordLookup - see if a given word is a keyword
*
* Returns a pointer to the ScanKeyword table entry, or NULL if no match.
*
* The match is done case-insensitively. Note that we deliberately use a
* dumbed-down case conversion that will only translate 'A'-'Z' into 'a'-'z',
* even if we are in a locale where tolower() would produce more or different
* translations. This is to conform to the SQL99 spec, which says that
* keywords are to be matched in this way even though non-keyword identifiers
* receive a different case-normalization mapping.
*/
const ScanKeyword *
ScanKeywordLookup(const char *text)
{
int len,
i;
char word[NAMEDATALEN];
const ScanKeyword *low;
const ScanKeyword *high;
len = strlen(text);
/* We assume all keywords are shorter than NAMEDATALEN. */
if (len >= NAMEDATALEN)
return NULL;
/*
* Apply an ASCII-only downcasing. We must not use tolower() since it may
* produce the wrong translation in some locales (eg, Turkish).
*/
for (i = 0; i < len; i++)
{
char ch = text[i];
if (ch >= 'A' && ch <= 'Z')
ch += 'a' - 'A';
word[i] = ch;
}
word[len] = '\0';
/*
* Now do a binary search using plain strcmp() comparison.
*/
low = &ScanKeywords[0];
high = LastScanKeyword - 1;
while (low <= high)
{
const ScanKeyword *middle;
int difference;
middle = low + (high - low) / 2;
difference = strcmp(middle->name, word);
if (difference == 0)
return middle;
else if (difference < 0)
low = middle + 1;
else
high = middle - 1;
}
return NULL;
}