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msi: Store condition intermediate values in union. 

Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2017-10-24 15:02:56 +02:00 committed by Alexandre Julliard
parent c8d32b69ec
commit dcd92a168b
1 changed files with 110 additions and 124 deletions
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232
dlls/msi/cond.y
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@ -58,6 +58,18 @@ struct cond_str {
INT len;
};
struct value {
enum value_type {
VALUE_INTEGER,
VALUE_LITERAL,
VALUE_SYMBOL
} type;
union {
INT integer;
WCHAR *string;
} u;
};
static LPWSTR COND_GetString( COND_input *info, const struct cond_str *str );
static LPWSTR COND_GetLiteral( COND_input *info, const struct cond_str *str );
static int cond_lex( void *COND_lval, COND_input *info);
@ -70,16 +82,6 @@ static void cond_free( void *ptr );
static INT compare_int( INT a, INT operator, INT b );
static INT compare_string( LPCWSTR a, INT operator, LPCWSTR b, BOOL convert );
static INT compare_and_free_strings( LPWSTR a, INT op, LPWSTR b, BOOL convert )
{
INT r;
r = compare_string( a, op, b, convert );
cond_free( a );
cond_free( b );
return r;
}
static BOOL num_from_prop( LPCWSTR p, INT *val )
{
INT ret = 0, sign = 1;
@ -104,6 +106,12 @@ static BOOL num_from_prop( LPCWSTR p, INT *val )
return TRUE;
}
static void value_free( struct value val )
{
if (val.type != VALUE_INTEGER)
cond_free( val.u.string );
}
%}
%lex-param { COND_input *info }
@ -113,8 +121,7 @@ static BOOL num_from_prop( LPCWSTR p, INT *val )
%union
{
struct cond_str str;
LPWSTR string;
INT value;
struct value value;
LPWSTR identifier;
INT operator;
BOOL bool;
@ -132,8 +139,7 @@ static BOOL num_from_prop( LPCWSTR p, INT *val )
%nonassoc COND_ERROR COND_EOF
%type <bool> expression boolean_term boolean_factor
%type <value> value_i
%type <string> symbol_s value_s literal
%type <value> value
%type <identifier> identifier
%type <operator> operator
@ -189,64 +195,50 @@ boolean_term:
boolean_factor:
COND_NOT boolean_factor
{
$$ = $2 ? 0 : 1;
$$ = !$2;
}
| value_i
| value
{
$$ = $1 ? 1 : 0;
}
| value_s
{
$$ = ($1 && $1[0]) ? 1 : 0;
cond_free( $1 );
}
| value_i operator value_i
{
$$ = compare_int( $1, $2, $3 );
}
| symbol_s operator value_i
{
int num;
if (num_from_prop( $1, &num ))
$$ = compare_int( num, $2, $3 );
if ($1.type == VALUE_INTEGER)
$$ = $1.u.integer ? 1 : 0;
else
$$ = ($2 == COND_NE || $2 == COND_INE );
cond_free( $1 );
$$ = $1.u.string && $1.u.string[0];
value_free( $1 );
}
| value_i operator symbol_s
| value operator value
{
int num;
if (num_from_prop( $3, &num ))
$$ = compare_int( $1, $2, num );
else
$$ = ($2 == COND_NE || $2 == COND_INE );
cond_free( $3 );
}
| symbol_s operator symbol_s
{
$$ = compare_and_free_strings( $1, $2, $3, TRUE );
}
| symbol_s operator literal
{
$$ = compare_and_free_strings( $1, $2, $3, TRUE );
}
| literal operator symbol_s
{
$$ = compare_and_free_strings( $1, $2, $3, TRUE );
}
| literal operator literal
{
$$ = compare_and_free_strings( $1, $2, $3, FALSE );
}
| literal operator value_i
{
$$ = 0;
cond_free( $1 );
}
| value_i operator literal
{
$$ = 0;
cond_free( $3 );
if ($1.type == VALUE_INTEGER && $3.type == VALUE_INTEGER)
{
$$ = compare_int($1.u.integer, $2, $3.u.integer);
}
else if ($1.type != VALUE_INTEGER && $3.type != VALUE_INTEGER)
{
$$ = compare_string($1.u.string, $2, $3.u.string,
$1.type == VALUE_SYMBOL || $3.type == VALUE_SYMBOL);
}
else if ($1.type == VALUE_LITERAL || $3.type == VALUE_LITERAL)
{
$$ = FALSE;
}
else if ($1.type == VALUE_SYMBOL) /* symbol operator integer */
{
int num;
if (num_from_prop( $1.u.string, &num ))
$$ = compare_int( num, $2, $3.u.integer );
else
$$ = ($2 == COND_NE || $2 == COND_INE );
}
else /* integer operator symbol */
{
int num;
if (num_from_prop( $3.u.string, &num ))
$$ = compare_int( $1.u.integer, $2, num );
else
$$ = ($2 == COND_NE || $2 == COND_INE );
}
value_free( $1 );
value_free( $3 );
}
| COND_LPAR expression COND_RPAR
{
@ -276,35 +268,52 @@ operator:
| COND_IRHS { $$ = COND_IRHS; }
;
value_s:
symbol_s
{
$$ = $1;
}
| literal
{
$$ = $1;
}
;
literal:
COND_LITER
value:
identifier
{
COND_input* cond = (COND_input*) info;
$$ = COND_GetLiteral( cond, &$1 );
if( !$$ )
UINT len;
$$.type = VALUE_SYMBOL;
$$.u.string = msi_dup_property( cond->package->db, $1 );
if ($$.u.string)
{
len = (lstrlenW($$.u.string) + 1) * sizeof (WCHAR);
$$.u.string = cond_track_mem( cond, $$.u.string, len );
}
cond_free( $1 );
}
| COND_PERCENT identifier
{
COND_input* cond = (COND_input*) info;
UINT len = GetEnvironmentVariableW( $2, NULL, 0 );
$$.type = VALUE_SYMBOL;
$$.u.string = NULL;
if (len++)
{
$$.u.string = cond_alloc( cond, len*sizeof (WCHAR) );
if( !$$.u.string )
YYABORT;
GetEnvironmentVariableW( $2, $$.u.string, len );
}
cond_free( $2 );
}
| COND_LITER
{
COND_input* cond = (COND_input*) info;
$$.type = VALUE_LITERAL;
$$.u.string = COND_GetLiteral( cond, &$1 );
if( !$$.u.string )
YYABORT;
}
;
value_i:
COND_NUMBER
| COND_NUMBER
{
COND_input* cond = (COND_input*) info;
LPWSTR szNum = COND_GetString( cond, &$1 );
if( !szNum )
YYABORT;
$$ = atoiW( szNum );
$$.type = VALUE_INTEGER;
$$.u.integer = atoiW( szNum );
cond_free( szNum );
}
| COND_DOLLARS identifier
@ -313,7 +322,8 @@ value_i:
INSTALLSTATE install = INSTALLSTATE_UNKNOWN, action = INSTALLSTATE_UNKNOWN;
MSI_GetComponentStateW(cond->package, $2, &install, &action );
$$ = action;
$$.type = VALUE_INTEGER;
$$.u.integer = action;
cond_free( $2 );
}
| COND_QUESTION identifier
@ -321,8 +331,9 @@ value_i:
COND_input* cond = (COND_input*) info;
INSTALLSTATE install = INSTALLSTATE_UNKNOWN, action = INSTALLSTATE_UNKNOWN;
MSI_GetComponentStateW(cond->package, $2, &install, &action );
$$ = install;
MSI_GetComponentStateW(cond->package, $2, &install, &action );\
$$.type = VALUE_INTEGER;
$$.u.integer = install;
cond_free( $2 );
}
| COND_AMPER identifier
@ -334,10 +345,14 @@ value_i:
{
FIXME("condition may be evaluated incorrectly\n");
/* we should return empty string in this case */
$$ = MSICONDITION_FALSE;
$$.type = VALUE_INTEGER;
$$.u.integer = MSICONDITION_FALSE;
}
else
$$ = action;
{
$$.type = VALUE_INTEGER;
$$.u.integer = action;
}
cond_free( $2 );
}
@ -347,37 +362,8 @@ value_i:
INSTALLSTATE install = INSTALLSTATE_UNKNOWN, action = INSTALLSTATE_UNKNOWN;
MSI_GetFeatureStateW(cond->package, $2, &install, &action );
$$ = install;
cond_free( $2 );
}
;
symbol_s:
identifier
{
COND_input* cond = (COND_input*) info;
UINT len;
$$ = msi_dup_property( cond->package->db, $1 );
if ($$)
{
len = (lstrlenW($$) + 1) * sizeof (WCHAR);
$$ = cond_track_mem( cond, $$, len );
}
cond_free( $1 );
}
| COND_PERCENT identifier
{
COND_input* cond = (COND_input*) info;
UINT len = GetEnvironmentVariableW( $2, NULL, 0 );
$$ = NULL;
if (len++)
{
$$ = cond_alloc( cond, len*sizeof (WCHAR) );
if( !$$ )
YYABORT;
GetEnvironmentVariableW( $2, $$, len );
}
$$.type = VALUE_INTEGER;
$$.u.integer = install;
cond_free( $2 );
}
;