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wine/dlls/msi/tokenize.c
Mike McCormack 399321c4f2 msi: Add a stub ALTER query.
2006-08-18 11:36:30 +02:00

507 lines
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/*
** 2001 September 15
**
** The author disclaims copyright to this source code. In place of
** a legal notice, here is a blessing:
**
** May you do good and not evil.
** May you find forgiveness for yourself and forgive others.
** May you share freely, never taking more than you give.
**
*************************************************************************
** An tokenizer for SQL
**
** This file contains C code that splits an SQL input string up into
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
*/
#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "query.h"
#include "sql.tab.h"
WINE_DEFAULT_DEBUG_CHANNEL(msi);
/*
** All the keywords of the SQL language are stored as in a hash
** table composed of instances of the following structure.
*/
typedef struct Keyword Keyword;
struct Keyword {
const WCHAR *zName; /* The keyword name */
int tokenType; /* The token value for this keyword */
};
static const WCHAR ABORT_W[] = { 'A','B','O','R','T',0 };
static const WCHAR AFTER_W[] = { 'A','F','T','E','R',0 };
static const WCHAR ALTER_W[] = { 'A','L','T','E','R',0 };
static const WCHAR ALL_W[] = { 'A','L','L',0 };
static const WCHAR AND_W[] = { 'A','N','D',0 };
static const WCHAR AS_W[] = { 'A','S',0 };
static const WCHAR ASC_W[] = { 'A','S','C',0 };
static const WCHAR BEFORE_W[] = { 'B','E','F','O','R','E',0 };
static const WCHAR BEGIN_W[] = { 'B','E','G','I','N','W',0 };
static const WCHAR BETWEEN_W[] = { 'B','E','T','W','E','E','N',0 };
static const WCHAR BY_W[] = { 'B','Y',0 };
static const WCHAR CASCADE_W[] = { 'C','A','S','C','A','D','E',0 };
static const WCHAR CASE_W[] = { 'C','A','S','E',0 };
static const WCHAR CHAR_W[] = { 'C','H','A','R',0 };
static const WCHAR CHARACTER_W[] = { 'C','H','A','R','A','C','T','E','R',0 };
static const WCHAR CHECK_W[] = { 'C','H','E','C','K',0 };
static const WCHAR CLUSTER_W[] = { 'C','L','U','S','T','E','R',0 };
static const WCHAR COLLATE_W[] = { 'C','O','L','L','A','T','E',0 };
static const WCHAR COMMIT_W[] = { 'C','O','M','M','I','T',0 };
static const WCHAR CONFLICT_W[] = { 'C','O','N','F','L','I','C','T',0 };
static const WCHAR CONSTRAINT_W[] = { 'C','O','N','S','T','R','A','I','N','T',0 };
static const WCHAR COPY_W[] = { 'C','O','P','Y',0 };
static const WCHAR CREATE_W[] = { 'C','R','E','A','T','E',0 };
static const WCHAR CROSS_W[] = { 'C','R','O','S','S',0 };
static const WCHAR DEFAULT_W[] = { 'D','E','F','A','U','L','T',0 };
static const WCHAR DEFERRED_W[] = { 'D','E','F','E','R','R','E','D',0 };
static const WCHAR DEFERRABLE_W[] = { 'D','E','F','E','R','R','A','B','L','E',0 };
static const WCHAR DELETE_W[] = { 'D','E','L','E','T','E',0 };
static const WCHAR DELIMITERS_W[] = { 'D','E','L','I','M','I','T','E','R','S',0 };
static const WCHAR DESC_W[] = { 'D','E','S','C',0 };
static const WCHAR DISTINCT_W[] = { 'D','I','S','T','I','N','C','T',0 };
static const WCHAR DROP_W[] = { 'D','R','O','P',0 };
static const WCHAR END_W[] = { 'E','N','D',0 };
static const WCHAR EACH_W[] = { 'E','A','C','H',0 };
static const WCHAR ELSE_W[] = { 'E','L','S','E',0 };
static const WCHAR EXCEPT_W[] = { 'E','X','C','E','P','T',0 };
static const WCHAR EXPLAIN_W[] = { 'E','X','P','L','A','I','N',0 };
static const WCHAR FAIL_W[] = { 'F','A','I','L',0 };
static const WCHAR FOR_W[] = { 'F','O','R',0 };
static const WCHAR FOREIGN_W[] = { 'F','O','R','E','I','G','N',0 };
static const WCHAR FREE_W[] = { 'F','R','E','E',0 };
static const WCHAR FROM_W[] = { 'F','R','O','M',0 };
static const WCHAR FULL_W[] = { 'F','U','L','L',0 };
static const WCHAR GLOB_W[] = { 'G','L','O','B',0 };
static const WCHAR GROUP_W[] = { 'G','R','O','U','P',0 };
static const WCHAR HAVING_W[] = { 'H','A','V','I','N','G',0 };
static const WCHAR HOLD_W[] = { 'H','O','L','D',0 };
static const WCHAR IGNORE_W[] = { 'I','G','N','O','R','E',0 };
static const WCHAR IMMEDIATE_W[] = { 'I','M','M','E','D','I','A','T','E',0 };
static const WCHAR IN_W[] = { 'I','N',0 };
static const WCHAR INDEX_W[] = { 'I','N','D','E','X',0 };
static const WCHAR INITIALLY_W[] = { 'I','N','I','T','I','A','L','L','Y',0 };
static const WCHAR INNER_W[] = { 'I','N','N','E','R',0 };
static const WCHAR INSERT_W[] = { 'I','N','S','E','R','T',0 };
static const WCHAR INSTEAD_W[] = { 'I','N','S','T','E','A','D',0 };
static const WCHAR INT_W[] = { 'I','N','T',0 };
static const WCHAR INTERSECT_W[] = { 'I','N','T','E','R','S','E','C','T',0 };
static const WCHAR INTO_W[] = { 'I','N','T','O',0 };
static const WCHAR IS_W[] = { 'I','S',0 };
static const WCHAR ISNULL_W[] = { 'I','S','N','U','L','L',0 };
static const WCHAR JOIN_W[] = { 'J','O','I','N',0 };
static const WCHAR KEY_W[] = { 'K','E','Y',0 };
static const WCHAR LEFT_W[] = { 'L','E','F','T',0 };
static const WCHAR LIKE_W[] = { 'L','I','K','E',0 };
static const WCHAR LIMIT_W[] = { 'L','I','M','I','T',0 };
static const WCHAR LOCALIZABLE_W[] = { 'L','O','C','A','L','I','Z','A','B','L','E',0 };
static const WCHAR LONG_W[] = { 'L','O','N','G',0 };
static const WCHAR LONGCHAR_W[] = { 'L','O','N','G','C','H','A','R',0 };
static const WCHAR MATCH_W[] = { 'M','A','T','C','H',0 };
static const WCHAR NATURAL_W[] = { 'N','A','T','U','R','A','L',0 };
static const WCHAR NOT_W[] = { 'N','O','T',0 };
static const WCHAR NOTNULL_W[] = { 'N','O','T','N','U','L','L',0 };
static const WCHAR NULL_W[] = { 'N','U','L','L',0 };
static const WCHAR OBJECT_W[] = { 'O','B','J','E','C','T',0 };
static const WCHAR OF_W[] = { 'O','F',0 };
static const WCHAR OFFSET_W[] = { 'O','F','F','S','E','T',0 };
static const WCHAR ON_W[] = { 'O','N',0 };
static const WCHAR OR_W[] = { 'O','R',0 };
static const WCHAR ORDER_W[] = { 'O','R','D','E','R',0 };
static const WCHAR OUTER_W[] = { 'O','U','T','E','R',0 };
static const WCHAR PRAGMA_W[] = { 'P','R','A','G','M','A',0 };
static const WCHAR PRIMARY_W[] = { 'P','R','I','M','A','R','Y',0 };
static const WCHAR RAISE_W[] = { 'R','A','I','S','E',0 };
static const WCHAR REFERENCES_W[] = { 'R','E','F','E','R','E','N','C','E','S',0 };
static const WCHAR REPLACE_W[] = { 'R','E','P','L','A','C','E',0 };
static const WCHAR RESTRICT_W[] = { 'R','E','S','T','R','I','C','T',0 };
static const WCHAR RIGHT_W[] = { 'R','I','G','H','T',0 };
static const WCHAR ROLLBACK_W[] = { 'R','O','L','L','B','A','C','K',0 };
static const WCHAR ROW_W[] = { 'R','O','W',0 };
static const WCHAR SELECT_W[] = { 'S','E','L','E','C','T',0 };
static const WCHAR SET_W[] = { 'S','E','T',0 };
static const WCHAR SHORT_W[] = { 'S','H','O','R','T',0 };
static const WCHAR STATEMENT_W[] = { 'S','T','A','T','E','M','E','N','T',0 };
static const WCHAR TABLE_W[] = { 'T','A','B','L','E',0 };
static const WCHAR TEMP_W[] = { 'T','E','M','P',0 };
static const WCHAR TEMPORARY_W[] = { 'T','E','M','P','O','R','A','R','Y',0 };
static const WCHAR THEN_W[] = { 'T','H','E','N',0 };
static const WCHAR TRANSACTION_W[] = { 'T','R','A','N','S','A','C','T','I','O','N',0 };
static const WCHAR TRIGGER_W[] = { 'T','R','I','G','G','E','R',0 };
static const WCHAR UNION_W[] = { 'U','N','I','O','N',0 };
static const WCHAR UNIQUE_W[] = { 'U','N','I','Q','U','E',0 };
static const WCHAR UPDATE_W[] = { 'U','P','D','A','T','E',0 };
static const WCHAR USING_W[] = { 'U','S','I','N','G',0 };
static const WCHAR VACUUM_W[] = { 'V','A','C','U','U','M',0 };
static const WCHAR VALUES_W[] = { 'V','A','L','U','E','S',0 };
static const WCHAR VIEW_W[] = { 'V','I','E','W',0 };
static const WCHAR WHEN_W[] = { 'W','H','E','N',0 };
static const WCHAR WHERE_W[] = { 'W','H','E','R','E',0 };
/*
** These are the keywords
*/
static const Keyword aKeywordTable[] = {
{ ABORT_W, TK_ABORT },
{ AFTER_W, TK_AFTER },
{ ALTER_W, TK_ALTER },
{ ALL_W, TK_ALL },
{ AND_W, TK_AND },
{ AS_W, TK_AS },
{ ASC_W, TK_ASC },
{ BEFORE_W, TK_BEFORE },
{ BEGIN_W, TK_BEGIN },
{ BETWEEN_W, TK_BETWEEN },
{ BY_W, TK_BY },
{ CASCADE_W, TK_CASCADE },
{ CASE_W, TK_CASE },
{ CHAR_W, TK_CHAR },
{ CHARACTER_W, TK_CHAR },
{ CHECK_W, TK_CHECK },
{ CLUSTER_W, TK_CLUSTER },
{ COLLATE_W, TK_COLLATE },
{ COMMIT_W, TK_COMMIT },
{ CONFLICT_W, TK_CONFLICT },
{ CONSTRAINT_W, TK_CONSTRAINT },
{ COPY_W, TK_COPY },
{ CREATE_W, TK_CREATE },
{ CROSS_W, TK_JOIN_KW },
{ DEFAULT_W, TK_DEFAULT },
{ DEFERRED_W, TK_DEFERRED },
{ DEFERRABLE_W, TK_DEFERRABLE },
{ DELETE_W, TK_DELETE },
{ DELIMITERS_W, TK_DELIMITERS },
{ DESC_W, TK_DESC },
{ DISTINCT_W, TK_DISTINCT },
{ DROP_W, TK_DROP },
{ END_W, TK_END },
{ EACH_W, TK_EACH },
{ ELSE_W, TK_ELSE },
{ EXCEPT_W, TK_EXCEPT },
{ EXPLAIN_W, TK_EXPLAIN },
{ FAIL_W, TK_FAIL },
{ FOR_W, TK_FOR },
{ FOREIGN_W, TK_FOREIGN },
{ FROM_W, TK_FROM },
{ FULL_W, TK_JOIN_KW },
{ GLOB_W, TK_GLOB },
{ GROUP_W, TK_GROUP },
{ HAVING_W, TK_HAVING },
{ HOLD_W, TK_HOLD },
{ IGNORE_W, TK_IGNORE },
{ IMMEDIATE_W, TK_IMMEDIATE },
{ IN_W, TK_IN },
{ INDEX_W, TK_INDEX },
{ INITIALLY_W, TK_INITIALLY },
{ INNER_W, TK_JOIN_KW },
{ INSERT_W, TK_INSERT },
{ INSTEAD_W, TK_INSTEAD },
{ INT_W, TK_INT },
{ INTERSECT_W, TK_INTERSECT },
{ INTO_W, TK_INTO },
{ IS_W, TK_IS },
{ ISNULL_W, TK_ISNULL },
{ JOIN_W, TK_JOIN },
{ KEY_W, TK_KEY },
{ LEFT_W, TK_JOIN_KW },
{ LIKE_W, TK_LIKE },
{ LIMIT_W, TK_LIMIT },
{ LOCALIZABLE_W, TK_LOCALIZABLE },
{ LONG_W, TK_LONG },
{ LONGCHAR_W, TK_LONGCHAR },
{ MATCH_W, TK_MATCH },
{ NATURAL_W, TK_JOIN_KW },
{ NOT_W, TK_NOT },
{ NOTNULL_W, TK_NOTNULL },
{ NULL_W, TK_NULL },
{ OBJECT_W, TK_OBJECT },
{ OF_W, TK_OF },
{ OFFSET_W, TK_OFFSET },
{ ON_W, TK_ON },
{ OR_W, TK_OR },
{ ORDER_W, TK_ORDER },
{ OUTER_W, TK_JOIN_KW },
{ PRAGMA_W, TK_PRAGMA },
{ PRIMARY_W, TK_PRIMARY },
{ RAISE_W, TK_RAISE },
{ REFERENCES_W, TK_REFERENCES },
{ REPLACE_W, TK_REPLACE },
{ RESTRICT_W, TK_RESTRICT },
{ RIGHT_W, TK_JOIN_KW },
{ ROLLBACK_W, TK_ROLLBACK },
{ ROW_W, TK_ROW },
{ SELECT_W, TK_SELECT },
{ SET_W, TK_SET },
{ SHORT_W, TK_SHORT },
{ STATEMENT_W, TK_STATEMENT },
{ TABLE_W, TK_TABLE },
{ TEMP_W, TK_TEMP },
{ TEMPORARY_W, TK_TEMP },
{ THEN_W, TK_THEN },
{ TRANSACTION_W, TK_TRANSACTION },
{ TRIGGER_W, TK_TRIGGER },
{ UNION_W, TK_UNION },
{ UNIQUE_W, TK_UNIQUE },
{ UPDATE_W, TK_UPDATE },
{ USING_W, TK_USING },
{ VACUUM_W, TK_VACUUM },
{ VALUES_W, TK_VALUES },
{ VIEW_W, TK_VIEW },
{ WHEN_W, TK_WHEN },
{ WHERE_W, TK_WHERE },
};
#define KEYWORD_COUNT ( sizeof aKeywordTable/sizeof (Keyword) )
/*
** This function looks up an identifier to determine if it is a
** keyword. If it is a keyword, the token code of that keyword is
** returned. If the input is not a keyword, TK_ID is returned.
*/
static int sqliteKeywordCode(const WCHAR *z, int n){
UINT i;
for(i=0; i<KEYWORD_COUNT; i++)
{
if(strncmpiW(z, aKeywordTable[i].zName, n))
continue;
if(lstrlenW(aKeywordTable[i].zName) == n )
return aKeywordTable[i].tokenType;
}
return TK_ID;
}
/*
** If X is a character that can be used in an identifier then
** isIdChar[X] will be 1. Otherwise isIdChar[X] will be 0.
**
** In this implementation, an identifier can be a string of
** alphabetic characters, digits, and "_" plus any character
** with the high-order bit set. The latter rule means that
** any sequence of UTF-8 characters or characters taken from
** an extended ISO8859 character set can form an identifier.
*/
static const char isIdChar[] = {
/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1x */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 2x */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 3x */
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 4x */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 5x */
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6x */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 7x */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 8x */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 9x */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* Ax */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* Bx */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* Cx */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* Dx */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* Ex */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* Fx */
};
/*
** Return the length of the token that begins at z[0]. Return
** -1 if the token is (or might be) incomplete. Store the token
** type in *tokenType before returning.
*/
int sqliteGetToken(const WCHAR *z, int *tokenType){
int i;
switch( *z ){
case ' ': case '\t': case '\n': case '\f': case '\r': {
for(i=1; isspace(z[i]); i++){}
*tokenType = TK_SPACE;
return i;
}
case '-': {
if( z[1]==0 ) return -1;
if( z[1]=='-' ){
for(i=2; z[i] && z[i]!='\n'; i++){}
*tokenType = TK_COMMENT;
return i;
}
*tokenType = TK_MINUS;
return 1;
}
case '(': {
if( z[1]=='+' && z[2]==')' ){
*tokenType = TK_ORACLE_OUTER_JOIN;
return 3;
}else{
*tokenType = TK_LP;
return 1;
}
}
case ')': {
*tokenType = TK_RP;
return 1;
}
case ';': {
*tokenType = TK_SEMI;
return 1;
}
case '+': {
*tokenType = TK_PLUS;
return 1;
}
case '*': {
*tokenType = TK_STAR;
return 1;
}
case '/': {
if( z[1]!='*' || z[2]==0 ){
*tokenType = TK_SLASH;
return 1;
}
for(i=3; z[i] && (z[i]!='/' || z[i-1]!='*'); i++){}
if( z[i] ) i++;
*tokenType = TK_COMMENT;
return i;
}
case '%': {
*tokenType = TK_REM;
return 1;
}
case '=': {
*tokenType = TK_EQ;
return 1 + (z[1]=='=');
}
case '<': {
if( z[1]=='=' ){
*tokenType = TK_LE;
return 2;
}else if( z[1]=='>' ){
*tokenType = TK_NE;
return 2;
}else if( z[1]=='<' ){
*tokenType = TK_LSHIFT;
return 2;
}else{
*tokenType = TK_LT;
return 1;
}
}
case '>': {
if( z[1]=='=' ){
*tokenType = TK_GE;
return 2;
}else if( z[1]=='>' ){
*tokenType = TK_RSHIFT;
return 2;
}else{
*tokenType = TK_GT;
return 1;
}
}
case '!': {
if( z[1]!='=' ){
*tokenType = TK_ILLEGAL;
return 2;
}else{
*tokenType = TK_NE;
return 2;
}
}
case '|': {
if( z[1]!='|' ){
*tokenType = TK_BITOR;
return 1;
}else{
*tokenType = TK_CONCAT;
return 2;
}
}
case '?': {
*tokenType = TK_WILDCARD;
return 1;
}
case ',': {
*tokenType = TK_COMMA;
return 1;
}
case '&': {
*tokenType = TK_BITAND;
return 1;
}
case '~': {
*tokenType = TK_BITNOT;
return 1;
}
case '`': case '\'': case '"': {
int delim = z[0];
for(i=1; z[i]; i++){
if( z[i]==delim ){
if( z[i+1]==delim ){
i++;
}else{
break;
}
}
}
if( z[i] ) i++;
if( delim == '`' )
*tokenType = TK_ID;
else
*tokenType = TK_STRING;
return i;
}
case '.': {
if( !isdigit(z[1]) ){
*tokenType = TK_DOT;
return 1;
}
/* Fall thru into the next case */
}
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': {
*tokenType = TK_INTEGER;
for(i=1; isdigit(z[i]); i++){}
if( z[i]=='.' ){
i++;
while( isdigit(z[i]) ){ i++; }
*tokenType = TK_FLOAT;
}
if( (z[i]=='e' || z[i]=='E') &&
( isdigit(z[i+1])
|| ((z[i+1]=='+' || z[i+1]=='-') && isdigit(z[i+2]))
)
){
i += 2;
while( isdigit(z[i]) ){ i++; }
*tokenType = TK_FLOAT;
}else if( z[0]=='.' ){
*tokenType = TK_FLOAT;
}
return i;
}
case '[': {
for(i=1; z[i] && z[i-1]!=']'; i++){}
*tokenType = TK_ID;
return i;
}
default: {
if( !isIdChar[*z] ){
break;
}
for(i=1; isIdChar[z[i]]; i++){}
*tokenType = sqliteKeywordCode(z, i);
return i;
}
}
*tokenType = TK_ILLEGAL;
return 1;
}
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