Sweden-Number/tools/widl/header.c

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/*
* IDL Compiler
*
* Copyright 2002 Ove Kaaven
*
* 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 <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 "proxy.h"
static int indentation = 0;
static void indent(int delta)
{
int c;
if (delta < 0) indentation += delta;
for (c=0; c<indentation; c++) fprintf(header, " ");
if (delta > 0) indentation += delta;
}
int is_void(type_t *t, var_t *v)
{
if (v && v->ptr_level) return 0;
if (!t->type && !t->ref) return 1;
return 0;
}
static void write_pident(var_t *v)
{
int c;
for (c=0; c<v->ptr_level; c++) {
fprintf(header, "*");
}
if (v->name) fprintf(header, "%s", v->name);
}
void write_name(FILE *h, var_t *v)
{
fprintf(h, "%s", v->name);
}
char* get_name(var_t *v)
{
return v->name;
}
static void write_fields(FILE *h, var_t *v)
{
if (!v) return;
while (NEXT_LINK(v)) v = NEXT_LINK(v);
while (v) {
if (v->type) {
indent(0);
write_type(h, v->type, NULL, v->tname);
if (get_name(v)) {
fprintf(header, " ");
write_pident(v);
}
fprintf(header, ";\n");
}
v = PREV_LINK(v);
}
}
void write_type(FILE *h, type_t *t, var_t *v, char *n)
{
int c;
if (n) fprintf(h, "%s", n);
else {
if (t->is_const) fprintf(h, "const ");
if (t->type) {
switch (t->type) {
case RPC_FC_BYTE:
fprintf(h, "byte");
break;
case RPC_FC_CHAR:
fprintf(h, "char");
break;
case RPC_FC_USHORT:
fprintf(h, "unsigned ");
case RPC_FC_SHORT:
if (t->ref) fprintf(h, t->ref->name);
fprintf(h, "short");
break;
case RPC_FC_ULONG:
fprintf(h, "unsigned ");
case RPC_FC_LONG:
if (t->ref) fprintf(h, t->ref->name);
else fprintf(h, "long");
break;
case RPC_FC_STRUCT:
if (t->defined && !t->written) {
if (t->name) fprintf(h, "struct %s {\n", t->name);
else fprintf(h, "struct {\n");
indentation++;
write_fields(h, t->fields);
indent(-1);
fprintf(h, "}");
}
else fprintf(h, "struct %s", t->name);
break;
case RPC_FC_NON_ENCAPSULATED_UNION:
if (t->defined && !t->written) {
if (t->name) fprintf(h, "union %s {\n", t->name);
else fprintf(h, "union {\n");
indentation++;
write_fields(h, t->fields);
indent(-1);
fprintf(h, "}");
}
else fprintf(h, "union %s", t->name);
break;
default:
fprintf(h, "(unknown-type:%d)", t->type);
}
}
else {
if (t->ref) {
write_type(h, t->ref, NULL, t->name);
}
else fprintf(h, "void");
}
}
if (v) {
for (c=0; c<v->ptr_level; c++) {
fprintf(h, "*");
}
}
}
void write_typedef(type_t *type, var_t *names)
{
char *tname = names->tname;
while (NEXT_LINK(names)) names = NEXT_LINK(names);
fprintf(header, "typedef ");
write_type(header, type, NULL, tname);
fprintf(header, " ");
while (names) {
write_pident(names);
if (PREV_LINK(names))
fprintf(header, ", ");
names = PREV_LINK(names);
}
fprintf(header, ";\n");
}
/********** INTERFACES **********/
int is_object(attr_t *a)
{
while (a) {
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if (a->type == ATTR_OBJECT) return 1;
a = NEXT_LINK(a);
}
return 0;
}
int is_local(attr_t *a)
{
while (a) {
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if (a->type == ATTR_LOCAL) return 1;
a = NEXT_LINK(a);
}
return 0;
}
var_t *is_callas(attr_t *a)
{
while (a) {
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if (a->type == ATTR_CALLAS) return a->u.pval;
a = NEXT_LINK(a);
}
return NULL;
}
static void write_method_def(type_t *iface)
{
func_t *cur = iface->funcs;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
fprintf(header, "#define %s_METHODS", iface->name);
while (cur) {
var_t *def = cur->def;
if (!is_callas(def->attrs)) {
var_t *arg = cur->args;
int argc = 0;
if (arg) {
argc++;
while (NEXT_LINK(arg)) {
arg = NEXT_LINK(arg);
argc++;
}
}
fprintf(header, " \\\n");
if (!is_void(def->type, def)) {
if (argc)
fprintf(header, " ICOM_METHOD%d (", argc);
else
fprintf(header, " ICOM_METHOD (");
write_type(header, def->type, def, def->tname);
fprintf(header, ",");
} else
if (argc)
fprintf(header, " ICOM_VMETHOD%d(", argc);
else
fprintf(header, " ICOM_VMETHOD (");
write_name(header, def);
while (arg) {
fprintf(header, ",");
write_type(header, arg->type, arg, arg->tname);
fprintf(header, ",");
write_name(header,arg);
arg = PREV_LINK(arg);
}
fprintf(header, ")");
}
cur = PREV_LINK(cur);
}
fprintf(header, "\n");
}
static int write_method_macro(type_t *iface, char *name)
{
int idx;
func_t *cur = iface->funcs;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
if (iface->ref) idx = write_method_macro(iface->ref, name);
else idx = 0;
fprintf(header, "/*** %s methods ***/\n", iface->name);
while (cur) {
var_t *def = cur->def;
if (!is_callas(def->attrs)) {
var_t *arg = cur->args;
int argc = 0;
int c;
while (arg) {
arg = NEXT_LINK(arg);
argc++;
}
fprintf(header, "#define %s_", name);
write_name(header,def);
fprintf(header, "(p");
for (c=0; c<argc; c++)
fprintf(header, ",%c", c+'a');
fprintf(header, ") ");
if (argc)
fprintf(header, "ICOM_CALL%d(", argc);
else
fprintf(header, "ICOM_CALL(");
write_name(header,def);
fprintf(header, ",p");
for (c=0; c<argc; c++)
fprintf(header, ",%c", c+'a');
fprintf(header, ")\n");
if (cur->idx == -1) cur->idx = idx;
else if (cur->idx != idx) yyerror("BUG: method index mismatch in write_method_macro");
idx++;
}
cur = PREV_LINK(cur);
}
return idx;
}
void write_method_args(FILE *h, var_t *arg, char *name)
{
if (arg) {
while (NEXT_LINK(arg))
arg = NEXT_LINK(arg);
}
fprintf(h, " %s* This", name);
while (arg) {
fprintf(h, ",\n ");
write_type(h, arg->type, arg, arg->tname);
fprintf(h, " ");
write_name(h,arg);
arg = PREV_LINK(arg);
}
}
static void write_method_proto(type_t *iface)
{
func_t *cur = iface->funcs;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
while (cur) {
var_t *def = cur->def;
var_t *cas = is_callas(def->attrs);
if (!is_local(def->attrs)) {
/* proxy prototype */
write_type(header, def->type, def, def->tname);
fprintf(header, " CALLBACK %s_", iface->name);
write_name(header,def);
fprintf(header, "_Proxy(\n");
write_method_args(header, cur->args, iface->name);
fprintf(header, ");\n");
/* stub prototype */
fprintf(header, "void __RPC_STUB %s_", iface->name);
write_name(header,def);
fprintf(header, "_Stub(\n");
fprintf(header, " IRpcStubBuffer* This,\n");
fprintf(header, " IRpcChannelBuffer* pRpcChannelBuffer,\n");
fprintf(header, " PRPC_MESSAGE pRpcMessage,\n");
fprintf(header, " DWORD* pdwStubPhase);\n");
}
if (cas) {
func_t *m = iface->funcs;
while (m && strcmp(get_name(m->def), cas->name))
m = NEXT_LINK(m);
if (m) {
var_t *mdef = m->def;
/* proxy prototype - use local prototype */
write_type(header, mdef->type, mdef, mdef->tname);
fprintf(header, " CALLBACK %s_", iface->name);
write_name(header, mdef);
fprintf(header, "_Proxy(\n");
write_method_args(header, m->args, iface->name);
fprintf(header, ");\n");
/* stub prototype - use remotable prototype */
write_type(header, def->type, def, def->tname);
fprintf(header, " __RPC_STUB %s_", iface->name);
write_name(header, mdef);
fprintf(header, "_Stub(\n");
write_method_args(header, cur->args, iface->name);
fprintf(header, ");\n");
}
else {
yywarning("invalid call_as attribute (%s -> %s)\n", get_name(def), cas->name);
}
}
cur = PREV_LINK(cur);
}
}
void write_forward(type_t *iface)
{
if (!iface->written) {
fprintf(header, "typedef struct %s %s;\n", iface->name, iface->name);
iface->written = TRUE;
}
}
void write_interface(type_t *iface)
{
if (!is_object(iface->attrs)) {
if (!iface->funcs) return;
yywarning("RPC interfaces not supported yet\n");
return;
}
if (!iface->funcs) {
yywarning("%s has no methods", iface->name);
return;
}
fprintf(header, "/*****************************************************************************\n");
fprintf(header, " * %s interface\n", iface->name);
fprintf(header, " */\n");
write_forward(iface);
if (iface->ref)
fprintf(header, "#define ICOM_INTERFACE %s\n", iface->name);
write_method_def(iface);
fprintf(header, "#define %s_IMETHODS \\\n", iface->name);
if (iface->ref)
fprintf(header, " %s_IMETHODS \\\n", iface->ref->name);
fprintf(header, " %s_METHODS \\\n", iface->name);
if (iface->ref) {
fprintf(header, "ICOM_DEFINE(%s,%s)\n", iface->name, iface->ref->name);
fprintf(header, "#undef ICOM_INTERFACE\n");
}
fprintf(header, "\n");
write_method_macro(iface, iface->name);
fprintf(header, "\n");
write_method_proto(iface);
fprintf(header, "\n");
if (!is_local(iface->attrs))
write_proxy(iface);
}