Sweden-Number/tools/winebuild/parser.c

496 lines
13 KiB
C

/*
* 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
*/
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "build.h"
int current_line = 0;
static SPEC_TYPE SpecType = SPEC_INVALID;
static char ParseBuffer[512];
static char *ParseNext = ParseBuffer;
static char ParseSaveChar;
static FILE *input_file;
static const char * const TypeNames[TYPE_NBTYPES] =
{
"byte", /* TYPE_BYTE */
"word", /* TYPE_WORD */
"long", /* TYPE_LONG */
"pascal16", /* TYPE_PASCAL_16 */
"pascal", /* TYPE_PASCAL */
"equate", /* TYPE_ABS */
"register", /* TYPE_REGISTER */
"interrupt", /* TYPE_INTERRUPT */
"stub", /* TYPE_STUB */
"stdcall", /* TYPE_STDCALL */
"cdecl", /* TYPE_CDECL */
"varargs", /* TYPE_VARARGS */
"extern", /* TYPE_EXTERN */
"forward" /* TYPE_FORWARD */
};
/* callback function used for stub functions */
#define STUB_CALLBACK \
((SpecType == SPEC_WIN16) ? "RELAY_Unimplemented16": "RELAY_Unimplemented32")
static int IsNumberString(char *s)
{
while (*s) if (!isdigit(*s++)) return 0;
return 1;
}
static char * GetTokenInLine(void)
{
char *p;
char *token;
if (ParseNext != ParseBuffer)
{
if (ParseSaveChar == '\0')
return NULL;
*ParseNext = ParseSaveChar;
}
/*
* Remove initial white space.
*/
for (p = ParseNext; isspace(*p); p++)
;
if ((*p == '\0') || (*p == '#'))
return NULL;
/*
* Find end of token.
*/
token = p++;
if (*token != '(' && *token != ')')
while (*p != '\0' && *p != '(' && *p != ')' && !isspace(*p))
p++;
ParseSaveChar = *p;
ParseNext = p;
*p = '\0';
return token;
}
static char * GetToken(void)
{
char *token;
while ((token = GetTokenInLine()) == NULL)
{
ParseNext = ParseBuffer;
while (1)
{
current_line++;
if (fgets(ParseBuffer, sizeof(ParseBuffer), input_file) == NULL)
return NULL;
if (ParseBuffer[0] != '#')
break;
}
}
return token;
}
/*******************************************************************
* ParseVariable
*
* Parse a variable definition.
*/
static void ParseVariable( ORDDEF *odp )
{
char *endptr;
int *value_array;
int n_values;
int value_array_size;
char *token = GetToken();
if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
n_values = 0;
value_array_size = 25;
value_array = xmalloc(sizeof(*value_array) * value_array_size);
while ((token = GetToken()) != NULL)
{
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')
fatal_error( "Expected number value, got '%s'\n", token );
}
if (token == NULL)
fatal_error( "End of file in variable declaration\n" );
odp->u.var.n_values = n_values;
odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values);
}
/*******************************************************************
* ParseExportFunction
*
* Parse a function definition.
*/
static void ParseExportFunction( ORDDEF *odp )
{
char *token;
int i;
switch(SpecType)
{
case SPEC_WIN16:
if (odp->type == TYPE_STDCALL)
fatal_error( "'stdcall' not supported for Win16\n" );
if (odp->type == TYPE_VARARGS)
fatal_error( "'varargs' not supported for Win16\n" );
break;
case SPEC_WIN32:
if ((odp->type == TYPE_PASCAL) || (odp->type == TYPE_PASCAL_16))
fatal_error( "'pascal' not supported for Win32\n" );
break;
default:
break;
}
token = GetToken();
if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
for (i = 0; i < sizeof(odp->u.func.arg_types)-1; i++)
{
token = GetToken();
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';
odp->u.func.arg_types[i] = 'l';
}
else fatal_error( "Unknown variable type '%s'\n", token );
if (SpecType == SPEC_WIN32)
{
if (strcmp(token, "long") &&
strcmp(token, "ptr") &&
strcmp(token, "str") &&
strcmp(token, "wstr") &&
strcmp(token, "double"))
{
fatal_error( "Type '%s' not supported for Win32\n", token );
}
}
}
if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types)))
fatal_error( "Too many arguments\n" );
odp->u.func.arg_types[i] = '\0';
if ((odp->type == TYPE_STDCALL) && !i)
odp->type = TYPE_CDECL; /* stdcall is the same as cdecl for 0 args */
strcpy(odp->u.func.link_name, GetToken());
}
/*******************************************************************
* ParseEquate
*
* Parse an 'equate' definition.
*/
static void ParseEquate( ORDDEF *odp )
{
char *endptr;
char *token = GetToken();
int value = strtol(token, &endptr, 0);
if (endptr == NULL || *endptr != '\0')
fatal_error( "Expected number value, got '%s'\n", token );
if (SpecType == SPEC_WIN32)
fatal_error( "'equate' not supported for Win32\n" );
odp->u.abs.value = value;
}
/*******************************************************************
* ParseStub
*
* Parse a 'stub' definition.
*/
static void ParseStub( ORDDEF *odp )
{
odp->u.func.arg_types[0] = '\0';
strcpy( odp->u.func.link_name, STUB_CALLBACK );
}
/*******************************************************************
* ParseInterrupt
*
* Parse an 'interrupt' definition.
*/
static void ParseInterrupt( ORDDEF *odp )
{
char *token;
if (SpecType == SPEC_WIN32)
fatal_error( "'interrupt' not supported for Win32\n" );
token = GetToken();
if (*token != '(') fatal_error( "Expected '(' got '%s'\n", token );
token = GetToken();
if (*token != ')') fatal_error( "Expected ')' got '%s'\n", token );
odp->u.func.arg_types[0] = '\0';
strcpy( odp->u.func.link_name, GetToken() );
}
/*******************************************************************
* ParseExtern
*
* Parse an 'extern' definition.
*/
static void ParseExtern( ORDDEF *odp )
{
if (SpecType == SPEC_WIN16) fatal_error( "'extern' not supported for Win16\n" );
strcpy( odp->u.ext.link_name, GetToken() );
}
/*******************************************************************
* ParseForward
*
* Parse a 'forward' definition.
*/
static void ParseForward( ORDDEF *odp )
{
if (SpecType == SPEC_WIN16) fatal_error( "'forward' not supported for Win16\n" );
strcpy( odp->u.fwd.link_name, GetToken() );
}
/*******************************************************************
* ParseOrdinal
*
* Parse an ordinal definition.
*/
static void ParseOrdinal(int ordinal)
{
char *token;
ORDDEF *odp = &EntryPoints[nb_entry_points++];
if (!(token = GetToken())) fatal_error( "Expected type after ordinal\n" );
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)
fatal_error( "Expected type after ordinal, found '%s' instead\n", token );
if (!(token = GetToken())) fatal_error( "Expected name after type\n" );
strcpy( odp->name, token );
odp->lineno = current_line;
odp->ordinal = ordinal;
switch(odp->type)
{
case TYPE_BYTE:
case TYPE_WORD:
case TYPE_LONG:
ParseVariable( odp );
break;
case TYPE_REGISTER:
ParseExportFunction( odp );
#ifndef __i386__
/* ignore Win32 'register' routines on non-Intel archs */
if (SpecType == SPEC_WIN32)
{
nb_entry_points--;
return;
}
#endif
break;
case TYPE_PASCAL_16:
case TYPE_PASCAL:
case TYPE_STDCALL:
case TYPE_VARARGS:
case TYPE_CDECL:
ParseExportFunction( odp );
break;
case TYPE_INTERRUPT:
ParseInterrupt( odp );
break;
case TYPE_ABS:
ParseEquate( odp );
break;
case TYPE_STUB:
ParseStub( odp );
break;
case TYPE_EXTERN:
ParseExtern( odp );
break;
case TYPE_FORWARD:
ParseForward( odp );
break;
default:
assert( 0 );
}
if (ordinal != -1)
{
if (ordinal >= MAX_ORDINALS) fatal_error( "Ordinal number %d too large\n", ordinal );
if (ordinal > Limit) Limit = ordinal;
if (ordinal < Base) Base = ordinal;
odp->ordinal = ordinal;
Ordinals[ordinal] = odp;
}
if (!strcmp( odp->name, "@" ))
{
if (ordinal == -1)
fatal_error( "Nameless function needs an explicit ordinal number\n" );
if (SpecType != SPEC_WIN32)
fatal_error( "Nameless functions not supported for Win16\n" );
odp->name[0] = 0;
}
else Names[nb_names++] = odp;
}
/*******************************************************************
* ParseTopLevel
*
* Parse a spec file.
*/
SPEC_TYPE ParseTopLevel( FILE *file )
{
char *token;
input_file = file;
current_line = 1;
while ((token = GetToken()) != NULL)
{
if (strcmp(token, "name") == 0)
{
strcpy(DLLName, GetToken());
}
else if (strcmp(token, "file") == 0)
{
strcpy(DLLFileName, GetToken());
strupper(DLLFileName);
}
else if (strcmp(token, "type") == 0)
{
token = GetToken();
if (!strcmp(token, "win16" )) SpecType = SPEC_WIN16;
else if (!strcmp(token, "win32" )) SpecType = SPEC_WIN32;
else fatal_error( "Type must be 'win16' or 'win32'\n" );
}
else if (strcmp(token, "mode") == 0)
{
token = GetToken();
if (!strcmp(token, "dll" )) SpecMode = SPEC_MODE_DLL;
else if (!strcmp(token, "guiexe" )) SpecMode = SPEC_MODE_GUIEXE;
else if (!strcmp(token, "cuiexe" )) SpecMode = SPEC_MODE_CUIEXE;
else fatal_error( "Mode must be 'dll', 'guiexe' or 'cuiexe'\n" );
}
else if (strcmp(token, "heap") == 0)
{
token = GetToken();
if (!IsNumberString(token)) fatal_error( "Expected number after heap\n" );
DLLHeapSize = atoi(token);
}
else if (strcmp(token, "init") == 0)
{
strcpy(DLLInitFunc, GetToken());
if (SpecType == SPEC_WIN16)
fatal_error( "init cannot be used for Win16 spec files\n" );
if (!DLLInitFunc[0])
fatal_error( "Expected function name after init\n" );
if (!strcmp(DLLInitFunc, "main"))
fatal_error( "The init function cannot be named 'main'\n" );
}
else if (strcmp(token, "import") == 0)
{
if (nb_imports >= MAX_IMPORTS)
fatal_error( "Too many imports (limit %d)\n", MAX_IMPORTS );
if (SpecType != SPEC_WIN32)
fatal_error( "Imports not supported for Win16\n" );
DLLImports[nb_imports++] = xstrdup(GetToken());
}
else if (strcmp(token, "rsrc") == 0)
{
strcpy( rsrc_name, GetToken() );
strcat( rsrc_name, "_ResourceDescriptor" );
}
else if (strcmp(token, "@") == 0)
{
if (SpecType != SPEC_WIN32)
fatal_error( "'@' ordinals not supported for Win16\n" );
ParseOrdinal( -1 );
}
else if (IsNumberString(token))
{
ParseOrdinal( atoi(token) );
}
else
fatal_error( "Expected name, id, length or ordinal\n" );
}
if (!DLLFileName[0])
{
if (SpecMode == SPEC_MODE_DLL)
sprintf( DLLFileName, "%s.dll", DLLName );
else
sprintf( DLLFileName, "%s.exe", DLLName );
}
if (SpecType == SPEC_INVALID) fatal_error( "Missing 'type' declaration\n" );
current_line = 0; /* no longer parsing the input file */
return SpecType;
}