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Sweden-Number/tools/winebuild/parser.c

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/*
* Spec file parser
*
* Copyright 1993 Robert J. Amstadt
* Copyright 1995 Martin von Loewis
* Copyright 1995, 1996, 1997 Alexandre Julliard
* Copyright 1997 Eric Youngdale
* Copyright 1999 Ulrich Weigand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "build.h"
int current_line = 0;
static char ParseBuffer[512];
static char TokenBuffer[512];
static char *ParseNext = ParseBuffer;
static FILE *input_file;
static const char * const TypeNames[TYPE_NBTYPES] =
{
"variable", /* TYPE_VARIABLE */
"pascal", /* TYPE_PASCAL */
"equate", /* TYPE_ABS */
"stub", /* TYPE_STUB */
"stdcall", /* TYPE_STDCALL */
"cdecl", /* TYPE_CDECL */
"varargs", /* TYPE_VARARGS */
"extern" /* TYPE_EXTERN */
};
static const char * const FlagNames[] =
{
"norelay", /* FLAG_NORELAY */
"noname", /* FLAG_NONAME */
"ret16", /* FLAG_RET16 */
"ret64", /* FLAG_RET64 */
"i386", /* FLAG_I386 */
"register", /* FLAG_REGISTER */
"interrupt", /* FLAG_INTERRUPT */
"private", /* FLAG_PRIVATE */
NULL
};
static int IsNumberString(const char *s)
{
while (*s) if (!isdigit(*s++)) return 0;
return 1;
}
inline static int is_token_separator( char ch )
{
return (ch == '(' || ch == ')' || ch == '-');
}
/* get the next line from the input file, or return 0 if at eof */
static int get_next_line(void)
{
ParseNext = ParseBuffer;
current_line++;
return (fgets(ParseBuffer, sizeof(ParseBuffer), input_file) != NULL);
}
static const char * GetToken( int allow_eol )
{
char *p = ParseNext;
char *token = TokenBuffer;
for (;;)
{
/* remove initial white space */
p = ParseNext;
while (isspace(*p)) p++;
if (*p == '\\' && p[1] == '\n') /* line continuation */
{
if (!get_next_line())
{
if (!allow_eol) error( "Unexpected end of file\n" );
return NULL;
}
}
else break;
}
if ((*p == '\0') || (*p == '#'))
{
if (!allow_eol) error( "Declaration not terminated properly\n" );
return NULL;
}
/*
* Find end of token.
*/
if (is_token_separator(*p))
{
/* a separator is always a complete token */
*token++ = *p++;
}
else while (*p != '\0' && !is_token_separator(*p) && !isspace(*p))
{
if (*p == '\\') p++;
if (*p) *token++ = *p++;
}
*token = '\0';
ParseNext = p;
return TokenBuffer;
}
/*******************************************************************
* ParseVariable
*
* Parse a variable definition.
*/
static int ParseVariable( ORDDEF *odp )
{
char *endptr;
int *value_array;
int n_values;
int value_array_size;
const char *token;
if (SpecType == SPEC_WIN32)
{
error( "'variable' not supported in Win32, use 'extern' instead\n" );
return 0;
}
if (!(token = GetToken(0))) return 0;
if (*token != '(')
{
error( "Expected '(' got '%s'\n", token );
return 0;
}
n_values = 0;
value_array_size = 25;
value_array = xmalloc(sizeof(*value_array) * value_array_size);
for (;;)
{
if (!(token = GetToken(0)))
{
free( value_array );
return 0;
}
if (*token == ')')
break;
value_array[n_values++] = strtol(token, &endptr, 0);
if (n_values == value_array_size)
{
value_array_size += 25;
value_array = xrealloc(value_array,
sizeof(*value_array) * value_array_size);
}
if (endptr == NULL || *endptr != '\0')
{
error( "Expected number value, got '%s'\n", token );
free( value_array );
return 0;
}
}
odp->u.var.n_values = n_values;
odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values);
return 1;
}
/*******************************************************************
* ParseExportFunction
*
* Parse a function definition.
*/
static int ParseExportFunction( ORDDEF *odp )
{
const char *token;
unsigned int i;
switch(SpecType)
{
case SPEC_WIN16:
if (odp->type == TYPE_STDCALL)
{
error( "'stdcall' not supported for Win16\n" );
return 0;
}
break;
case SPEC_WIN32:
if (odp->type == TYPE_PASCAL)
{
error( "'pascal' not supported for Win32\n" );
return 0;
}
if (odp->flags & FLAG_INTERRUPT)
{
error( "'interrupt' not supported for Win32\n" );
return 0;
}
break;
default:
break;
}
if (!(token = GetToken(0))) return 0;
if (*token != '(')
{
error( "Expected '(' got '%s'\n", token );
return 0;
}
for (i = 0; i < sizeof(odp->u.func.arg_types); i++)
{
if (!(token = GetToken(0))) return 0;
if (*token == ')')
break;
if (!strcmp(token, "word"))
odp->u.func.arg_types[i] = 'w';
else if (!strcmp(token, "s_word"))
odp->u.func.arg_types[i] = 's';
else if (!strcmp(token, "long") || !strcmp(token, "segptr"))
odp->u.func.arg_types[i] = 'l';
else if (!strcmp(token, "ptr"))
odp->u.func.arg_types[i] = 'p';
else if (!strcmp(token, "str"))
odp->u.func.arg_types[i] = 't';
else if (!strcmp(token, "wstr"))
odp->u.func.arg_types[i] = 'W';
else if (!strcmp(token, "segstr"))
odp->u.func.arg_types[i] = 'T';
else if (!strcmp(token, "double"))
{
odp->u.func.arg_types[i++] = 'l';
if (i < sizeof(odp->u.func.arg_types)) odp->u.func.arg_types[i] = 'l';
}
else
{
error( "Unknown argument type '%s'\n", token );
return 0;
}
if (SpecType == SPEC_WIN32)
{
if (strcmp(token, "long") &&
strcmp(token, "ptr") &&
strcmp(token, "str") &&
strcmp(token, "wstr") &&
strcmp(token, "double"))
{
error( "Type '%s' not supported for Win32\n", token );
return 0;
}
}
}
if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types)))
{
error( "Too many arguments\n" );
return 0;
}
odp->u.func.arg_types[i] = '\0';
if (odp->type == TYPE_VARARGS)
odp->flags |= FLAG_NORELAY; /* no relay debug possible for varags entry point */
if (!(token = GetToken(1)))
{
if (!strcmp( odp->name, "@" ))
{
error( "Missing handler name for anonymous function\n" );
return 0;
}
odp->link_name = xstrdup( odp->name );
}
else
{
odp->link_name = xstrdup( token );
if (strchr( odp->link_name, '.' ))
{
if (SpecType == SPEC_WIN16)
{
error( "Forwarded functions not supported for Win16\n" );
return 0;
}
odp->flags |= FLAG_FORWARD;
}
}
return 1;
}
/*******************************************************************
* ParseEquate
*
* Parse an 'equate' definition.
*/
static int ParseEquate( ORDDEF *odp )
{
char *endptr;
int value;
const char *token;
if (SpecType == SPEC_WIN32)
{
error( "'equate' not supported for Win32\n" );
return 0;
}
if (!(token = GetToken(0))) return 0;
value = strtol(token, &endptr, 0);
if (endptr == NULL || *endptr != '\0')
{
error( "Expected number value, got '%s'\n", token );
return 0;
}
odp->u.abs.value = value;
return 1;
}
/*******************************************************************
* ParseStub
*
* Parse a 'stub' definition.
*/
static int ParseStub( ORDDEF *odp )
{
odp->u.func.arg_types[0] = '\0';
odp->link_name = xstrdup("");
return 1;
}
/*******************************************************************
* ParseExtern
*
* Parse an 'extern' definition.
*/
static int ParseExtern( ORDDEF *odp )
{
const char *token;
if (SpecType == SPEC_WIN16)
{
error( "'extern' not supported for Win16, use 'variable' instead\n" );
return 0;
}
if (!(token = GetToken(1)))
{
if (!strcmp( odp->name, "@" ))
{
error( "Missing handler name for anonymous extern\n" );
return 0;
}
odp->link_name = xstrdup( odp->name );
}
else
{
odp->link_name = xstrdup( token );
if (strchr( odp->link_name, '.' )) odp->flags |= FLAG_FORWARD;
}
return 1;
}
/*******************************************************************
* ParseFlags
*
* Parse the optional flags for an entry point
*/
static const char *ParseFlags( ORDDEF *odp )
{
unsigned int i;
const char *token;
do
{
if (!(token = GetToken(0))) break;
for (i = 0; FlagNames[i]; i++)
if (!strcmp( FlagNames[i], token )) break;
if (!FlagNames[i])
{
error( "Unknown flag '%s'\n", token );
return NULL;
}
odp->flags |= 1 << i;
token = GetToken(0);
} while (token && *token == '-');
return token;
}
/*******************************************************************
* fix_export_name
*
* Fix an exported function name by removing a possible @xx suffix
*/
static void fix_export_name( char *name )
{
char *p, *end = strrchr( name, '@' );
if (!end || !end[1] || end == name) return;
/* make sure all the rest is digits */
for (p = end + 1; *p; p++) if (!isdigit(*p)) return;
*end = 0;
}
/*******************************************************************
* ParseOrdinal
*
* Parse an ordinal definition.
*/
static int ParseOrdinal(int ordinal)
{
const char *token;
ORDDEF *odp = xmalloc( sizeof(*odp) );
memset( odp, 0, sizeof(*odp) );
EntryPoints[nb_entry_points++] = odp;
if (!(token = GetToken(0))) goto error;
for (odp->type = 0; odp->type < TYPE_NBTYPES; odp->type++)
if (TypeNames[odp->type] && !strcmp( token, TypeNames[odp->type] ))
break;
if (odp->type >= TYPE_NBTYPES)
{
error( "Expected type after ordinal, found '%s' instead\n", token );
goto error;
}
if (!(token = GetToken(0))) goto error;
if (*token == '-' && !(token = ParseFlags( odp ))) goto error;
odp->name = xstrdup( token );
fix_export_name( odp->name );
odp->lineno = current_line;
odp->ordinal = ordinal;
switch(odp->type)
{
case TYPE_VARIABLE:
if (!ParseVariable( odp )) goto error;
break;
case TYPE_PASCAL:
case TYPE_STDCALL:
case TYPE_VARARGS:
case TYPE_CDECL:
if (!ParseExportFunction( odp )) goto error;
break;
case TYPE_ABS:
if (!ParseEquate( odp )) goto error;
break;
case TYPE_STUB:
if (!ParseStub( odp )) goto error;
break;
case TYPE_EXTERN:
if (!ParseExtern( odp )) goto error;
break;
default:
assert( 0 );
}
#ifndef __i386__
if (odp->flags & FLAG_I386)
{
/* ignore this entry point on non-Intel archs */
EntryPoints[--nb_entry_points] = NULL;
free( odp );
return 1;
}
#endif
if (ordinal != -1)
{
if (!ordinal)
{
error( "Ordinal 0 is not valid\n" );
goto error;
}
if (ordinal >= MAX_ORDINALS)
{
error( "Ordinal number %d too large\n", ordinal );
goto error;
}
if (ordinal > Limit) Limit = ordinal;
if (ordinal < Base) Base = ordinal;
odp->ordinal = ordinal;
if (Ordinals[ordinal])
{
error( "Duplicate ordinal %d\n", ordinal );
goto error;
}
Ordinals[ordinal] = odp;
}
if (!strcmp( odp->name, "@" ) || odp->flags & FLAG_NONAME)
{
if (ordinal == -1)
{
error( "Nameless function needs an explicit ordinal number\n" );
goto error;
}
if (SpecType != SPEC_WIN32)
{
error( "Nameless functions not supported for Win16\n" );
goto error;
}
if (!strcmp( odp->name, "@" )) free( odp->name );
else odp->export_name = odp->name;
odp->name = NULL;
}
else Names[nb_names++] = odp;
return 1;
error:
EntryPoints[--nb_entry_points] = NULL;
free( odp->name );
free( odp );
return 0;
}
static int name_compare( const void *name1, const void *name2 )
{
ORDDEF *odp1 = *(ORDDEF **)name1;
ORDDEF *odp2 = *(ORDDEF **)name2;
return strcmp( odp1->name, odp2->name );
}
/*******************************************************************
* sort_names
*
* Sort the name array and catch duplicates.
*/
static void sort_names(void)
{
int i;
if (!nb_names) return;
/* sort the list of names */
qsort( Names, nb_names, sizeof(Names[0]), name_compare );
/* check for duplicate names */
for (i = 0; i < nb_names - 1; i++)
{
if (!strcmp( Names[i]->name, Names[i+1]->name ))
{
current_line = max( Names[i]->lineno, Names[i+1]->lineno );
error( "'%s' redefined\n%s:%d: First defined here\n",
Names[i]->name, input_file_name,
min( Names[i]->lineno, Names[i+1]->lineno ) );
}
}
}
/*******************************************************************
* ParseTopLevel
*
* Parse a spec file.
*/
int ParseTopLevel( FILE *file )
{
const char *token;
input_file = file;
current_line = 0;
while (get_next_line())
{
if (!(token = GetToken(1))) continue;
if (strcmp(token, "@") == 0)
{
if (SpecType != SPEC_WIN32)
{
error( "'@' ordinals not supported for Win16\n" );
continue;
}
if (!ParseOrdinal( -1 )) continue;
}
else if (IsNumberString(token))
{
if (!ParseOrdinal( atoi(token) )) continue;
}
else
{
error( "Expected ordinal declaration, got '%s'\n", token );
continue;
}
if ((token = GetToken(1))) error( "Syntax error near '%s'\n", token );
}
current_line = 0; /* no longer parsing the input file */
sort_names();
return !nb_errors;
}
/*******************************************************************
* add_debug_channel
*/
static void add_debug_channel( const char *name )
{
int i;
for (i = 0; i < nb_debug_channels; i++)
if (!strcmp( debug_channels[i], name )) return;
debug_channels = xrealloc( debug_channels, (nb_debug_channels + 1) * sizeof(*debug_channels));
debug_channels[nb_debug_channels++] = xstrdup(name);
}
/*******************************************************************
* parse_debug_channels
*
* Parse a source file and extract the debug channel definitions.
*/
int parse_debug_channels( const char *srcdir, const char *filename )
{
FILE *file;
int eol_seen = 1;
file = open_input_file( srcdir, filename );
while (fgets( ParseBuffer, sizeof(ParseBuffer), file ))
{
char *channel, *end, *p = ParseBuffer;
p = ParseBuffer + strlen(ParseBuffer) - 1;
if (!eol_seen) /* continuation line */
{
eol_seen = (*p == '\n');
continue;
}
if ((eol_seen = (*p == '\n'))) *p = 0;
p = ParseBuffer;
while (isspace(*p)) p++;
if (!memcmp( p, "WINE_DECLARE_DEBUG_CHANNEL", 26 ) ||
!memcmp( p, "WINE_DEFAULT_DEBUG_CHANNEL", 26 ))
{
p += 26;
while (isspace(*p)) p++;
if (*p != '(')
{
error( "invalid debug channel specification '%s'\n", ParseBuffer );
goto next;
}
p++;
while (isspace(*p)) p++;
if (!isalpha(*p))
{
error( "invalid debug channel specification '%s'\n", ParseBuffer );
goto next;
}
channel = p;
while (isalnum(*p) || *p == '_') p++;
end = p;
while (isspace(*p)) p++;
if (*p != ')')
{
error( "invalid debug channel specification '%s'\n", ParseBuffer );
goto next;
}
*end = 0;
add_debug_channel( channel );
}
next:
current_line++;
}
close_input_file( file );
return !nb_errors;
}
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