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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"
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_attr(attr_t *a, enum attr_type t)
{
while (a) {
if (a->type == t) return 1;
a = NEXT_LINK(a);
}
return 0;
}
void *get_attrp(attr_t *a, enum attr_type t)
{
while (a) {
if (a->type == t) return a->u.pval;
a = NEXT_LINK(a);
}
return NULL;
}
unsigned long get_attrv(attr_t *a, enum attr_type t)
{
while (a) {
if (a->type == t) return a->u.ival;
a = NEXT_LINK(a);
}
return 0;
}
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(FILE *h, var_t *v)
{
int c;
for (c=0; c<v->ptr_level; c++) {
fprintf(h, "*");
}
if (v->name) fprintf(h, "%s", v->name);
}
void write_name(FILE *h, var_t *v)
{
if (is_attr( v->attrs, ATTR_PROPGET ))
fprintf(h, "get_" );
else if (is_attr( v->attrs, ATTR_PROPPUT ))
fprintf(h, "put_" );
fprintf(h, "%s", v->name);
}
char* get_name(var_t *v)
{
return v->name;
}
static void write_array(FILE *h, expr_t *v, int field)
{
if (!v) return;
while (NEXT_LINK(v)) v = NEXT_LINK(v);
fprintf(h, "[");
while (v) {
if (v->is_const)
fprintf(h, "%ld", v->cval); /* statically sized array */
else
if (field) fprintf(h, "1"); /* dynamically sized array */
if (PREV_LINK(v))
fprintf(h, ", ");
v = PREV_LINK(v);
}
fprintf(h, "]");
}
static void write_field(FILE *h, var_t *v)
{
if (!v) return;
if (v->type) {
indent(0);
write_type(h, v->type, NULL, v->tname);
if (get_name(v)) {
fprintf(h, " ");
write_pident(h, v);
}
else {
/* not all C/C++ compilers support anonymous structs and unions */
switch (v->type->type) {
case RPC_FC_STRUCT:
case RPC_FC_CVSTRUCT:
case RPC_FC_CPSTRUCT:
case RPC_FC_CSTRUCT:
case RPC_FC_PSTRUCT:
case RPC_FC_BOGUS_STRUCT:
case RPC_FC_ENCAPSULATED_UNION:
fprintf(h, " DUMMYSTRUCTNAME");
break;
case RPC_FC_NON_ENCAPSULATED_UNION:
fprintf(h, " DUMMYUNIONNAME");
break;
default:
/* ? */
break;
}
}
write_array(h, v->array, 1);
fprintf(h, ";\n");
}
}
static void write_fields(FILE *h, var_t *v)
{
var_t *first = v;
if (!v) return;
while (NEXT_LINK(v)) v = NEXT_LINK(v);
while (v) {
write_field(h, v);
if (v == first) break;
v = PREV_LINK(v);
}
}
static void write_enums(FILE *h, var_t *v)
{
if (!v) return;
while (NEXT_LINK(v)) v = NEXT_LINK(v);
while (v) {
if (get_name(v)) {
indent(0);
write_name(h, v);
if (v->eval) {
fprintf(h, " = ");
write_expr(h, v->eval);
}
}
if (PREV_LINK(v))
fprintf(h, ",\n");
v = PREV_LINK(v);
}
fprintf(h, "\n");
}
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) {
if (t->sign > 0) fprintf(h, "signed ");
else if (t->sign < 0) fprintf(h, "unsigned ");
switch (t->type) {
case RPC_FC_BYTE:
if (t->ref) fprintf(h, t->ref->name);
else fprintf(h, "byte");
break;
case RPC_FC_CHAR:
if (t->ref) fprintf(h, t->ref->name);
else fprintf(h, "char");
break;
case RPC_FC_WCHAR:
fprintf(h, "wchar_t");
break;
case RPC_FC_USHORT:
case RPC_FC_SHORT:
if (t->ref) fprintf(h, t->ref->name);
else fprintf(h, "short");
break;
case RPC_FC_ULONG:
case RPC_FC_LONG:
if (t->ref) fprintf(h, t->ref->name);
else fprintf(h, "long");
break;
case RPC_FC_HYPER:
if (t->ref) fprintf(h, t->ref->name);
else fprintf(h, "hyper");
break;
case RPC_FC_FLOAT:
fprintf(h, "float");
break;
case RPC_FC_DOUBLE:
fprintf(h, "double");
break;
case RPC_FC_ENUM16:
case RPC_FC_ENUM32:
if (t->defined && !t->written) {
if (t->name) fprintf(h, "enum %s {\n", t->name);
else fprintf(h, "enum {\n");
t->written = TRUE;
indentation++;
write_enums(h, t->fields);
indent(-1);
fprintf(h, "}");
}
else fprintf(h, "enum %s", t->name);
break;
case RPC_FC_ERROR_STATUS_T:
if (t->ref) fprintf(h, t->ref->name);
else fprintf(h, "error_status_t");
break;
case RPC_FC_BIND_PRIMITIVE:
if (t->ref) fprintf(h, t->ref->name);
else fprintf(h, "handle_t");
break;
case RPC_FC_STRUCT:
case RPC_FC_CVSTRUCT:
case RPC_FC_CPSTRUCT:
case RPC_FC_CSTRUCT:
case RPC_FC_PSTRUCT:
case RPC_FC_BOGUS_STRUCT:
case RPC_FC_ENCAPSULATED_UNION:
if (t->defined && !t->written) {
if (t->name) fprintf(h, "struct %s {\n", t->name);
else fprintf(h, "struct {\n");
t->written = TRUE;
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");
t->written = TRUE;
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;
var_t *lname;
while (NEXT_LINK(names)) names = NEXT_LINK(names);
lname = names;
fprintf(header, "typedef ");
write_type(header, type, NULL, tname);
fprintf(header, " ");
while (names) {
write_pident(header, names);
if (PREV_LINK(names))
fprintf(header, ", ");
names = PREV_LINK(names);
}
fprintf(header, ";\n");
if (get_attrp(type->attrs, ATTR_WIREMARSHAL)) {
names = lname;
while (names) {
char *name = get_name(names);
fprintf(header, "unsigned long __RPC_USER %s_UserSize (unsigned long *, unsigned long, %s *);\n", name, name);
fprintf(header, "unsigned char * __RPC_USER %s_UserMarshal (unsigned long *, unsigned char *, %s *);\n", name, name);
fprintf(header, "unsigned char * __RPC_USER %s_UserUnmarshal(unsigned long *, unsigned char *, %s *);\n", name, name);
fprintf(header, "void __RPC_USER %s_UserFree (unsigned long *, %s *);\n", name, name);
if (PREV_LINK(names))
fprintf(header, ", ");
names = PREV_LINK(names);
}
}
fprintf(header, "\n");
}
static void do_write_expr(FILE *h, expr_t *e, int p)
{
switch (e->type) {
case EXPR_VOID:
break;
case EXPR_NUM:
fprintf(h, "%ld", e->u.lval);
break;
case EXPR_HEXNUM:
fprintf(h, "0x%lx", e->u.lval);
break;
case EXPR_IDENTIFIER:
fprintf(h, "%s", e->u.sval);
break;
case EXPR_NEG:
fprintf(h, "-");
do_write_expr(h, e->ref, 1);
break;
case EXPR_NOT:
fprintf(h, "~");
do_write_expr(h, e->ref, 1);
break;
case EXPR_PPTR:
fprintf(h, "*");
do_write_expr(h, e->ref, 1);
break;
case EXPR_CAST:
fprintf(h, "(");
write_type(h, e->u.tref->ref, NULL, e->u.tref->name);
fprintf(h, ")");
do_write_expr(h, e->ref, 1);
break;
case EXPR_SIZEOF:
fprintf(h, "sizeof(");
write_type(h, e->u.tref->ref, NULL, e->u.tref->name);
fprintf(h, ")");
break;
case EXPR_SHL:
case EXPR_SHR:
case EXPR_MUL:
case EXPR_DIV:
case EXPR_ADD:
case EXPR_SUB:
case EXPR_AND:
case EXPR_OR:
if (p) fprintf(h, "(");
do_write_expr(h, e->ref, 1);
switch (e->type) {
case EXPR_SHL: fprintf(h, " << "); break;
case EXPR_SHR: fprintf(h, " >> "); break;
case EXPR_MUL: fprintf(h, " * "); break;
case EXPR_DIV: fprintf(h, " / "); break;
case EXPR_ADD: fprintf(h, " + "); break;
case EXPR_SUB: fprintf(h, " - "); break;
case EXPR_AND: fprintf(h, " & "); break;
case EXPR_OR: fprintf(h, " | "); break;
default: break;
}
do_write_expr(h, e->u.ext, 1);
if (p) fprintf(h, ")");
break;
case EXPR_COND:
if (p) fprintf(h, "(");
do_write_expr(h, e->ref, 1);
fprintf(h, " ? ");
do_write_expr(h, e->u.ext, 1);
fprintf(h, " : ");
do_write_expr(h, e->ext2, 1);
if (p) fprintf(h, ")");
break;
}
}
void write_expr(FILE *h, expr_t *e)
{
do_write_expr(h, e, 0);
}
void write_constdef(var_t *v)
{
fprintf(header, "#define %s (", get_name(v));
write_expr(header, v->eval);
fprintf(header, ")\n\n");
}
void write_externdef(var_t *v)
{
fprintf(header, "extern const ");
write_type(header, v->type, NULL, v->tname);
if (get_name(v)) {
fprintf(header, " ");
write_pident(header, v);
}
fprintf(header, ";\n\n");
}
/********** INTERFACES **********/
int is_object(attr_t *a)
{
while (a) {
if (a->type == ATTR_OBJECT || a->type == ATTR_ODL) return 1;
a = NEXT_LINK(a);
}
return 0;
}
int is_local(attr_t *a)
{
return is_attr(a, ATTR_LOCAL);
}
var_t *is_callas(attr_t *a)
{
return get_attrp(a, ATTR_CALLAS);
}
static int write_method_macro(type_t *iface, char *name)
{
int idx;
func_t *cur = iface->funcs;
if (iface->ref) idx = write_method_macro(iface->ref, name);
else idx = 0;
if (!cur) return idx;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
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, ") ");
fprintf(header, "(p)->lpVtbl->");
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_args(FILE *h, var_t *arg, char *name, int method, int do_indent)
{
int count = 0;
if (arg) {
while (NEXT_LINK(arg))
arg = NEXT_LINK(arg);
}
if (do_indent)
{
if (h == header) {
indentation++;
indent(0);
} else fprintf(h, " ");
}
if (method == 1) {
fprintf(h, "%s* This", name);
count++;
}
while (arg) {
if (count) {
if (do_indent)
{
fprintf(h, ",\n");
if (h == header) indent(0);
else fprintf(h, " ");
}
else fprintf(h, ",");
}
write_type(h, arg->type, arg, arg->tname);
if (arg->args)
{
fprintf(h, " (STDMETHODCALLTYPE *");
write_name(h,arg);
fprintf(h, ")(");
write_args(h, arg->args, NULL, 0, FALSE);
fprintf(h, ")");
}
else
{
fprintf(h, " ");
write_name(h, arg);
}
write_array(h, arg->array, 0);
arg = PREV_LINK(arg);
count++;
}
if (do_indent && h == header) indentation--;
}
static void write_cpp_method_def(type_t *iface)
{
func_t *cur = iface->funcs;
if (!cur) return;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
while (cur) {
var_t *def = cur->def;
if (!is_callas(def->attrs)) {
indent(0);
fprintf(header, "virtual ");
write_type(header, def->type, def, def->tname);
fprintf(header, " STDMETHODCALLTYPE ");
write_name(header, def);
fprintf(header, "(\n");
write_args(header, cur->args, iface->name, 2, TRUE);
fprintf(header, ") = 0;\n");
fprintf(header, "\n");
}
cur = PREV_LINK(cur);
}
}
static void do_write_c_method_def(type_t *iface, char *name)
{
func_t *cur = iface->funcs;
if (iface->ref) do_write_c_method_def(iface->ref, name);
if (!cur) return;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
indent(0);
fprintf(header, "/*** %s methods ***/\n", iface->name);
while (cur) {
var_t *def = cur->def;
if (!is_callas(def->attrs)) {
indent(0);
write_type(header, def->type, def, def->tname);
fprintf(header, " (STDMETHODCALLTYPE *");
write_name(header, def);
fprintf(header, ")(\n");
write_args(header, cur->args, name, 1, TRUE);
fprintf(header, ");\n");
fprintf(header, "\n");
}
cur = PREV_LINK(cur);
}
}
static void write_c_method_def(type_t *iface)
{
do_write_c_method_def(iface, iface->name);
}
static void write_method_proto(type_t *iface)
{
func_t *cur = iface->funcs;
if (!cur) return;
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_args(header, cur->args, iface->name, 1, TRUE);
fprintf(header, ");\n");
/* stub prototype */
fprintf(header, "void __RPC_STUB %s_", iface->name);
write_name(header,def);
fprintf(header, "_Stub(\n");
fprintf(header, " struct IRpcStubBuffer* This,\n");
fprintf(header, " struct 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_args(header, m->args, iface->name, 1, TRUE);
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_args(header, cur->args, iface->name, 1, TRUE);
fprintf(header, ");\n");
}
else {
yywarning("invalid call_as attribute (%s -> %s)\n", get_name(def), cas->name);
}
}
cur = PREV_LINK(cur);
}
}
static void write_function_proto(type_t *iface)
{
func_t *cur = iface->funcs;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
while (cur) {
var_t *def = cur->def;
/* FIXME: do we need to handle call_as? */
write_type(header, def->type, def, def->tname);
fprintf(header, " ");
write_name(header, def);
fprintf(header, "(\n");
write_args(header, cur->args, iface->name, 0, TRUE);
fprintf(header, ");\n");
cur = PREV_LINK(cur);
}
}
void write_forward(type_t *iface)
{
/* C/C++ forwards should only be written for object interfaces, so if we
* have a full definition we only write one if we find [object] among the
* attributes - however, if we don't have a full definition at this point
* (i.e. this is an IDL forward), then we also assume that it is an object
* interface, since non-object interfaces shouldn't need forwards */
if ((!iface->defined || is_object(iface->attrs)) && !iface->written) {
fprintf(header,"#ifndef __%s_FWD_DEFINED__\n", iface->name);
fprintf(header,"#define __%s_FWD_DEFINED__\n", iface->name);
fprintf(header, "typedef struct %s %s;\n", iface->name, iface->name);
fprintf(header, "#endif\n\n" );
iface->written = TRUE;
}
}
void write_guid(type_t *iface)
{
UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
if (!uuid) return;
fprintf(header, "DEFINE_GUID(IID_%s, 0x%08lx, 0x%04x, 0x%04x, 0x%02x,0x%02x, 0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x);\n",
iface->name, uuid->Data1, uuid->Data2, uuid->Data3, uuid->Data4[0], uuid->Data4[1],
uuid->Data4[2], uuid->Data4[3], uuid->Data4[4], uuid->Data4[5], uuid->Data4[6], uuid->Data4[7]);
}
void write_com_interface(type_t *iface)
{
if (!iface->funcs && !iface->ref) {
yywarning("%s has no methods", iface->name);
return;
}
fprintf(header, "/*****************************************************************************\n");
fprintf(header, " * %s interface\n", iface->name);
fprintf(header, " */\n");
fprintf(header,"#ifndef __%s_INTERFACE_DEFINED__\n", iface->name);
fprintf(header,"#define __%s_INTERFACE_DEFINED__\n\n", iface->name);
write_guid(iface);
write_forward(iface);
/* C++ interface */
fprintf(header, "#if defined(__cplusplus) && !defined(CINTERFACE)\n");
if (iface->ref)
{
fprintf(header, "struct %s : public %s\n", iface->name, iface->ref->name);
fprintf(header, "{\n");
indentation++;
write_cpp_method_def(iface);
indentation--;
fprintf(header, "};\n");
}
else
{
fprintf(header, "struct %s\n", iface->name);
fprintf(header, "{\n");
fprintf(header, " BEGIN_INTERFACE\n");
fprintf(header, "\n");
indentation++;
write_cpp_method_def(iface);
indentation--;
fprintf(header, " END_INTERFACE\n");
fprintf(header, "};\n");
}
fprintf(header, "#else\n");
/* C interface */
fprintf(header, "typedef struct %sVtbl %sVtbl;\n", iface->name, iface->name);
fprintf(header, "struct %s {\n", iface->name);
fprintf(header, " const %sVtbl* lpVtbl;\n", iface->name);
fprintf(header, "};\n");
fprintf(header, "struct %sVtbl {\n", iface->name);
indentation++;
fprintf(header, " BEGIN_INTERFACE\n");
fprintf(header, "\n");
write_c_method_def(iface);
indentation--;
fprintf(header, " END_INTERFACE\n");
fprintf(header, "};\n");
fprintf(header, "\n");
fprintf(header, "#ifdef COBJMACROS\n");
write_method_macro(iface, iface->name);
fprintf(header, "#endif\n");
fprintf(header, "\n");
fprintf(header, "#endif\n");
fprintf(header, "\n");
write_method_proto(iface);
fprintf(header,"\n#endif /* __%s_INTERFACE_DEFINED__ */\n\n", iface->name);
}
void write_rpc_interface(type_t *iface)
{
unsigned long ver = get_attrv(iface->attrs, ATTR_VERSION);
if (!iface->funcs) return;
fprintf(header, "/*****************************************************************************\n");
fprintf(header, " * %s interface (v%d.%d)\n", iface->name, LOWORD(ver), HIWORD(ver));
fprintf(header, " */\n");
write_guid(iface);
fprintf(header, "extern RPC_IF_HANDLE %s_v%d_%d_c_ifspec;\n", iface->name, LOWORD(ver), HIWORD(ver));
fprintf(header, "extern RPC_IF_HANDLE %s_v%d_%d_s_ifspec;\n", iface->name, LOWORD(ver), HIWORD(ver));
write_function_proto(iface);
fprintf(header, "\n");
/* FIXME: server/client code */
}
void write_interface(type_t *iface)
{
if (is_object(iface->attrs))
write_com_interface(iface);
else
write_rpc_interface(iface);
}
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