Sweden-Number/tools/widl/typegen.c

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/*
* Format String Generator for IDL Compiler
*
* Copyright 2005 Eric Kohl
* Copyright 2005 Robert Shearman
*
* 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 <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <string.h>
#include <assert.h>
#include <ctype.h>
#include <signal.h>
#include "widl.h"
#include "utils.h"
#include "parser.h"
#include "header.h"
#include "windef.h"
#include "widl.h"
#include "typegen.h"
static size_t get_size_typeformatstring_type(const type_t *type, int ptr_level,
const expr_t *array, const char *name);
static int print_file(FILE *file, int indent, const char *format, ...)
{
va_list va;
int i, r;
if (!file) return 0;
va_start(va, format);
for (i = 0; i < indent; i++)
fprintf(file, " ");
r = vfprintf(file, format, va);
va_end(va);
return r;
}
static inline int type_has_ref(const type_t *type)
{
return (type->type == 0 && type->ref);
}
static inline int is_base_type(unsigned char type)
{
switch (type)
{
case RPC_FC_BYTE:
case RPC_FC_CHAR:
case RPC_FC_USMALL:
case RPC_FC_SMALL:
case RPC_FC_WCHAR:
case RPC_FC_USHORT:
case RPC_FC_SHORT:
case RPC_FC_ULONG:
case RPC_FC_LONG:
case RPC_FC_HYPER:
case RPC_FC_IGNORE:
case RPC_FC_FLOAT:
case RPC_FC_DOUBLE:
case RPC_FC_ENUM16:
case RPC_FC_ENUM32:
case RPC_FC_ERROR_STATUS_T:
return TRUE;
default:
return FALSE;
}
}
static size_t write_procformatstring_type(FILE *file, int indent,
const type_t *type, int ptr_level, const expr_t *array, const char *name,
int is_in, int is_out, int is_return, unsigned int *type_offset)
{
size_t size;
if (ptr_level == 0 && type_has_ref(type))
return write_procformatstring_type(file, indent, type->ref, ptr_level,
array, name, is_in, is_out,
is_return, type_offset);
if (ptr_level == 0 && !array && is_base_type(type->type))
{
if (is_return)
print_file(file, indent, "0x53, /* FC_RETURN_PARAM_BASETYPE */\n");
else
print_file(file, indent, "0x4e, /* FC_IN_PARAM_BASETYPE */\n");
switch(type->type)
{
#define CASE_BASETYPE(fctype) \
case RPC_##fctype: \
print_file(file, indent, "0x%02x, /* " #fctype " */\n", RPC_##fctype); \
size = 2; /* includes param type prefix */ \
break
CASE_BASETYPE(FC_BYTE);
CASE_BASETYPE(FC_CHAR);
CASE_BASETYPE(FC_WCHAR);
CASE_BASETYPE(FC_USHORT);
CASE_BASETYPE(FC_SHORT);
CASE_BASETYPE(FC_ULONG);
CASE_BASETYPE(FC_LONG);
CASE_BASETYPE(FC_HYPER);
CASE_BASETYPE(FC_IGNORE);
CASE_BASETYPE(FC_USMALL);
CASE_BASETYPE(FC_SMALL);
CASE_BASETYPE(FC_FLOAT);
CASE_BASETYPE(FC_DOUBLE);
CASE_BASETYPE(FC_ERROR_STATUS_T);
#undef CASE_BASETYPE
default:
error("Unknown/unsupported type: %s (0x%02x)\n", name, type->type);
size = 0;
}
}
else
{
if (is_return)
print_file(file, indent, "0x52, /* FC_RETURN_PARAM */\n");
else if (is_in && is_out)
print_file(file, indent, "0x50, /* FC_IN_OUT_PARAM */\n");
else if (is_out)
print_file(file, indent, "0x51, /* FC_OUT_PARAM */\n");
else
print_file(file, indent, "0x4d, /* FC_IN_PARAM */\n");
print_file(file, indent, "0x01,\n");
print_file(file, indent, "NdrFcShort(0x%x),\n", *type_offset);
size = 4; /* includes param type prefix */
}
*type_offset += get_size_typeformatstring_type(type, ptr_level, array, name);
return size;
}
void write_procformatstring(FILE *file, type_t *iface)
{
int indent = 0;
var_t *var;
unsigned int type_offset = 2;
print_file(file, indent, "static const MIDL_PROC_FORMAT_STRING __MIDL_ProcFormatString =\n");
print_file(file, indent, "{\n");
indent++;
print_file(file, indent, "0,\n");
print_file(file, indent, "{\n");
indent++;
if (iface->funcs)
{
func_t *func = iface->funcs;
while (NEXT_LINK(func)) func = NEXT_LINK(func);
for (; func; func = PREV_LINK(func))
{
/* emit argument data */
if (func->args)
{
var = func->args;
while (NEXT_LINK(var)) var = NEXT_LINK(var);
while (var)
{
int is_in = is_attr(var->attrs, ATTR_IN);
int is_out = is_attr(var->attrs, ATTR_OUT);
if (!is_in && !is_out) is_in = TRUE;
write_procformatstring_type(file, indent, var->type,
var->ptr_level, var->array, var->name,
is_in, is_out, FALSE, &type_offset);
var = PREV_LINK(var);
}
}
/* emit return value data */
var = func->def;
if (is_void(var->type, NULL))
{
print_file(file, indent, "0x5b, /* FC_END */\n");
print_file(file, indent, "0x5c, /* FC_PAD */\n");
}
else
write_procformatstring_type(file, indent, var->type,
var->ptr_level, var->array, var->name, FALSE, FALSE, TRUE,
&type_offset);
}
}
print_file(file, indent, "0x0\n");
indent--;
print_file(file, indent, "}\n");
indent--;
print_file(file, indent, "};\n");
print_file(file, indent, "\n");
}
static size_t write_typeformatstring_type(FILE *file, int indent,
const type_t *type, int ptr_level, const expr_t *array, const char *name)
{
if (ptr_level == 0 && type_has_ref(type))
return write_typeformatstring_type(file, indent,
type->ref, 0 /* FIXME */, array, name);
/* basic types don't need a type format string */
if (ptr_level == 0 && !array && is_base_type(type->type))
return 0;
if ((ptr_level == 1 && !type_has_ref(type)) ||
(ptr_level == 0 && array && !NEXT_LINK(array)))
{
switch (type->type)
{
#define CASE_BASETYPE(fctype) \
case RPC_##fctype: \
print_file(file, indent, "0x11, 0x08, /* FC_RP [simple_pointer] */\n"); \
print_file(file, indent, "0x%02x, /* " #fctype " */\n", RPC_##fctype); \
print_file(file, indent, "0x5c, /* FC_PAD */\n"); \
return 4
CASE_BASETYPE(FC_BYTE);
CASE_BASETYPE(FC_CHAR);
CASE_BASETYPE(FC_SMALL);
CASE_BASETYPE(FC_USMALL);
CASE_BASETYPE(FC_WCHAR);
CASE_BASETYPE(FC_SHORT);
CASE_BASETYPE(FC_USHORT);
CASE_BASETYPE(FC_LONG);
CASE_BASETYPE(FC_ULONG);
CASE_BASETYPE(FC_FLOAT);
CASE_BASETYPE(FC_HYPER);
CASE_BASETYPE(FC_DOUBLE);
CASE_BASETYPE(FC_ENUM16);
CASE_BASETYPE(FC_ENUM32);
CASE_BASETYPE(FC_IGNORE);
CASE_BASETYPE(FC_ERROR_STATUS_T);
default:
error("write_typeformatstring_var: Unknown/unsupported type: %s (0x%02x)\n", name, type->type);
}
}
error("write_typeformatstring_var: Pointer level %d not supported for variable %s\n", ptr_level, name);
return 0;
}
void write_typeformatstring(FILE *file, type_t *iface)
{
int indent = 0;
var_t *var;
print_file(file, indent, "static const MIDL_TYPE_FORMAT_STRING __MIDL_TypeFormatString =\n");
print_file(file, indent, "{\n");
indent++;
print_file(file, indent, "0,\n");
print_file(file, indent, "{\n");
indent++;
print_file(file, indent, "NdrFcShort(0x0),\n");
if (iface->funcs)
{
func_t *func = iface->funcs;
while (NEXT_LINK(func)) func = NEXT_LINK(func);
for (; func; func = PREV_LINK(func))
{
if (func->args)
{
var = func->args;
while (NEXT_LINK(var)) var = NEXT_LINK(var);
while (var)
{
write_typeformatstring_type(file, indent, var->type,
var->ptr_level, var->array, var->name);
var = PREV_LINK(var);
}
}
}
}
print_file(file, indent, "0x0\n");
indent--;
print_file(file, indent, "}\n");
indent--;
print_file(file, indent, "};\n");
print_file(file, indent, "\n");
}
static unsigned int get_required_buffer_size_type(
const type_t *type, int ptr_level, const expr_t *array,
const char *name, unsigned int *alignment)
{
*alignment = 0;
if (ptr_level == 0 && !array && !type_has_ref(type))
{
switch (type->type)
{
case RPC_FC_BYTE:
case RPC_FC_CHAR:
case RPC_FC_USMALL:
case RPC_FC_SMALL:
return 1;
case RPC_FC_WCHAR:
case RPC_FC_USHORT:
case RPC_FC_SHORT:
*alignment = 2;
return 2;
case RPC_FC_ULONG:
case RPC_FC_LONG:
case RPC_FC_FLOAT:
case RPC_FC_ERROR_STATUS_T:
*alignment = 4;
return 4;
case RPC_FC_HYPER:
case RPC_FC_DOUBLE:
*alignment = 8;
return 8;
case RPC_FC_STRUCT:
{
size_t size = 0;
const var_t *field;
for (field = type->fields; field; field = NEXT_LINK(field))
{
unsigned int alignment;
size += get_required_buffer_size_type(
field->type, field->ptr_level, field->array, field->name,
&alignment);
}
return size;
}
default:
error("get_required_buffer_size: Unknown/unsupported type: %s (0x%02x)\n", name, type->type);
return 0;
}
}
if (ptr_level == 0 && type_has_ref(type))
return get_required_buffer_size_type(type->ref, 0 /* FIXME */, array, name, alignment);
return 0;
}
unsigned int get_required_buffer_size(const var_t *var, unsigned int *alignment)
{
return get_required_buffer_size_type(var->type, var->ptr_level, var->array, var->name, alignment);
}
void marshall_arguments(FILE *file, int indent, func_t *func,
unsigned int *type_offset, enum pass pass)
{
unsigned int last_size = 0;
var_t *var;
if (!func->args)
return;
var = func->args;
while (NEXT_LINK(var)) var = NEXT_LINK(var);
for (; var; *type_offset += get_size_typeformatstring_var(var), var = PREV_LINK(var))
{
int in_attr = is_attr(var->attrs, ATTR_IN);
int out_attr = is_attr(var->attrs, ATTR_OUT);
if (!in_attr && !out_attr)
in_attr = 1;
switch (pass)
{
case PASS_IN:
if (!in_attr)
continue;
break;
case PASS_OUT:
if (!out_attr)
continue;
break;
case PASS_RETURN:
break;
}
if (var->ptr_level == 0 && !var->array)
{
unsigned int size;
unsigned int alignment = 0;
switch (var->type->type)
{
case RPC_FC_BYTE:
case RPC_FC_CHAR:
case RPC_FC_SMALL:
case RPC_FC_USMALL:
size = 1;
alignment = 0;
break;
case RPC_FC_WCHAR:
case RPC_FC_USHORT:
case RPC_FC_SHORT:
size = 2;
if (last_size != 0 && last_size < 2)
alignment = (2 - last_size);
break;
case RPC_FC_ULONG:
case RPC_FC_LONG:
case RPC_FC_FLOAT:
case RPC_FC_ERROR_STATUS_T:
size = 4;
if (last_size != 0 && last_size < 4)
alignment = (4 - last_size);
break;
case RPC_FC_HYPER:
case RPC_FC_DOUBLE:
size = 8;
if (last_size != 0 && last_size < 4)
alignment = (4 - last_size);
break;
default:
error("marshall_arguments: Unsupported type: %s (0x%02x, ptr_level: 0)\n", var->name, var->type->type);
size = 0;
}
if (alignment != 0)
print_file(file, indent, "_StubMsg.Buffer += %u;\n", alignment);
print_file(file, indent, "*(");
write_type(file, var->type, var, var->tname);
fprintf(file, " *)_StubMsg.Buffer = ");
write_name(file, var);
fprintf(file, ";\n");
fprintf(file, "_StubMsg.Buffer += sizeof(");
write_type(file, var->type, var, var->tname);
fprintf(file, ");\n");
last_size = size;
}
else if ((var->ptr_level == 1 && !var->array) ||
(var->ptr_level == 0 && var->array))
{
if (is_attr(var->attrs, ATTR_STRING))
{
switch (var->type->type)
{
case RPC_FC_CHAR:
case RPC_FC_WCHAR:
print_file(file, indent,
"NdrConformantStringMarshall(&_StubMsg, (unsigned char *)%s, &__MIDL_TypeFormatString.Format[%d]);\n",
var->name, *type_offset);
break;
default:
error("marshall_arguments: Unsupported [string] type: %s (0x%02x, ptr_level: 1)\n", var->name, var->type->type);
}
}
else if (var->array)
{
const expr_t *length_is = get_attrp(var->attrs, ATTR_LENGTHIS);
const expr_t *size_is = get_attrp(var->attrs, ATTR_SIZEIS);
const char *array_type;
int has_length = length_is && (length_is->type != EXPR_VOID);
int has_size = size_is && (size_is->type != EXPR_VOID) && !var->array->is_const;
if (NEXT_LINK(var->array)) /* multi-dimensional array */
array_type = "ComplexArray";
else
{
if (!has_length && !has_size)
array_type = "FixedArray";
else if (has_length && !has_size)
{
print_file(file, indent, "_StubMsg.Offset = (unsigned long)0;\n"); /* FIXME */
print_file(file, indent, "_StubMsg.ActualCount = (unsigned long)");
write_expr(file, length_is, 1);
fprintf(file, ";\n\n");
array_type = "VaryingArray";
}
else if (!has_length && has_size)
{
print_file(file, indent, "_StubMsg.MaxCount = (unsigned long)");
write_expr(file, size_is ? size_is : var->array, 1);
fprintf(file, ";\n\n");
array_type = "ConformantArray";
}
else
{
print_file(file, indent, "_StubMsg.MaxCount = (unsigned long)");
write_expr(file, size_is ? size_is : var->array, 1);
fprintf(file, ";\n");
print_file(file, indent, "_StubMsg.Offset = (unsigned long)0;\n"); /* FIXME */
print_file(file, indent, "_StubMsg.ActualCount = (unsigned long)");
write_expr(file, length_is, 1);
fprintf(file, ";\n\n");
array_type = "ConformantVaryingArray";
}
}
print_file(file, indent,
"Ndr%sMarshall(&_StubMsg, (unsigned char *)%s, &__MIDL_TypeFormatString.Format[%d]);\n",
array_type, var->name, *type_offset);
}
else
{
const char *ndrtype;
switch (var->type->type)
{
case RPC_FC_STRUCT:
ndrtype = "SimpleStruct";
break;
case RPC_FC_CSTRUCT:
case RPC_FC_CPSTRUCT:
ndrtype = "ConformantStruct";
break;
case RPC_FC_CVSTRUCT:
ndrtype = "ConformantVaryingStruct";
break;
case RPC_FC_BOGUS_STRUCT:
ndrtype = "ComplexStruct";
break;
default:
error("marshall_arguments: Unsupported type: %s (0x%02x, ptr_level: %d)\n",
var->name, var->type->type, var->ptr_level);
ndrtype = NULL;
}
print_file(file, indent,
"Ndr%sMarshall(&_StubMsg, (unsigned char *)%s, &__MIDL_TypeFormatString.Format[%d]);\n",
ndrtype, var->name, *type_offset);
}
last_size = 1;
}
else
{
error("marshall_arguments: Pointer level %d not supported for variable %s\n", var->ptr_level, var->name);
last_size = 1;
}
fprintf(file, "\n");
}
}
void unmarshall_arguments(FILE *file, int indent, func_t *func,
unsigned int *type_offset, enum pass pass)
{
unsigned int last_size = 0;
var_t *var;
if (!func->args)
return;
var = func->args;
while (NEXT_LINK(var)) var = NEXT_LINK(var);
for (; var; *type_offset += get_size_typeformatstring_var(var), var = PREV_LINK(var))
{
int in_attr = is_attr(var->attrs, ATTR_IN);
int out_attr = is_attr(var->attrs, ATTR_OUT);
if (!in_attr && !out_attr)
in_attr = 1;
switch (pass)
{
case PASS_IN:
if (!in_attr)
continue;
break;
case PASS_OUT:
if (!out_attr)
continue;
break;
case PASS_RETURN:
break;
}
if (var->ptr_level == 0 && !var->array)
{
unsigned int size;
unsigned int alignment = 0;
switch (var->type->type)
{
case RPC_FC_BYTE:
case RPC_FC_CHAR:
case RPC_FC_SMALL:
case RPC_FC_USMALL:
size = 1;
alignment = 0;
break;
case RPC_FC_WCHAR:
case RPC_FC_USHORT:
case RPC_FC_SHORT:
size = 2;
if (last_size != 0 && last_size < 2)
alignment = (2 - last_size);
break;
case RPC_FC_ULONG:
case RPC_FC_LONG:
case RPC_FC_FLOAT:
case RPC_FC_ERROR_STATUS_T:
size = 4;
if (last_size != 0 && last_size < 4)
alignment = (4 - last_size);
break;
case RPC_FC_HYPER:
case RPC_FC_DOUBLE:
size = 8;
if (last_size != 0 && last_size < 4)
alignment = (4 - last_size);
break;
default:
error("unmarshall_arguments: Unsupported type: %s (0x%02x, ptr_level: 0)\n", var->name, var->type->type);
size = 0;
}
if (alignment != 0)
print_file(file, indent, "_StubMsg.Buffer += %u;\n", alignment);
print_file(file, indent, "");
write_name(file, var);
fprintf(file, " = *(");
write_type(file, var->type, var, var->tname);
fprintf(file, " *)_StubMsg.Buffer;\n");
fprintf(file, "_StubMsg.Buffer += sizeof(");
write_type(file, var->type, var, var->tname);
fprintf(file, ");\n");
last_size = size;
}
else if ((var->ptr_level == 1 && !var->array) ||
(var->ptr_level == 0 && var->array))
{
if (is_attr(var->attrs, ATTR_STRING))
{
switch (var->type->type)
{
case RPC_FC_CHAR:
case RPC_FC_WCHAR:
print_file(file, indent,
"NdrConformantStringUnmarshall(&_StubMsg, (unsigned char *)%s, &__MIDL_TypeFormatString.Format[%d], 0);\n",
var->name, *type_offset);
break;
default:
error("unmarshall_arguments: Unsupported [string] type: %s (0x%02x, ptr_level: %d)\n",
var->name, var->type->type, var->ptr_level);
}
}
else if (var->array)
{
const expr_t *length_is = get_attrp(var->attrs, ATTR_LENGTHIS);
const expr_t *size_is = get_attrp(var->attrs, ATTR_SIZEIS);
const char *array_type;
int has_length = length_is && (length_is->type != EXPR_VOID);
int has_size = size_is && (size_is->type != EXPR_VOID) && !var->array->is_const;
if (NEXT_LINK(var->array)) /* multi-dimensional array */
array_type = "ComplexArray";
else
{
if (!has_length && !has_size)
array_type = "FixedArray";
else if (has_length && !has_size)
array_type = "VaryingArray";
else if (!has_length && has_size)
array_type = "ConformantArray";
else
array_type = "ConformantVaryingArray";
}
print_file(file, indent,
"Ndr%sUnmarshall(&_StubMsg, (unsigned char *)%s, &__MIDL_TypeFormatString.Format[%d], 0);\n",
array_type, var->name, *type_offset);
}
else
{
const char *ndrtype;
switch (var->type->type)
{
case RPC_FC_STRUCT:
ndrtype = "SimpleStruct";
break;
case RPC_FC_CSTRUCT:
case RPC_FC_CPSTRUCT:
ndrtype = "ConformantStruct";
break;
case RPC_FC_CVSTRUCT:
ndrtype = "ConformantVaryingStruct";
break;
case RPC_FC_BOGUS_STRUCT:
ndrtype = "ComplexStruct";
break;
default:
error("unmarshall_arguments: Unsupported type: %s (0x%02x, ptr_level: %d)\n",
var->name, var->type->type, var->ptr_level);
ndrtype = NULL;
}
print_file(file, indent,
"Ndr%sUnmarshall(&_StubMsg, (unsigned char *)%s, &__MIDL_TypeFormatString.Format[%d], 0);\n",
ndrtype, var->name, *type_offset);
}
last_size = 1;
}
else
{
error("unmarshall_arguments: Pointer level %d not supported for variable %s\n", var->ptr_level, var->name);
last_size = 1;
}
fprintf(file, "\n");
}
}
static size_t get_size_typeformatstring_type(const type_t *type, int ptr_level,
const expr_t *array, const char *name)
{
return write_typeformatstring_type(NULL, 0, type, ptr_level, array, name);
}
size_t get_size_procformatstring_var(var_t *var)
{
unsigned int type_offset = 2;
return write_procformatstring_type(NULL, 0, var->type,
var->ptr_level, var->array, var->name, FALSE, FALSE, FALSE, &type_offset);
}
size_t get_size_typeformatstring_var(var_t *var)
{
return write_typeformatstring_type(NULL, 0, var->type, var->ptr_level,
var->array, var->name);
}