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- make the widl generated proxy-stub code compilable 

- generate marshalling and unmarshalling code for proxies
- generate exception handling constructs
This commit is contained in:
Mike McCormack 2004-09-06 20:25:39 +00:00 committed by Alexandre Julliard
parent e67a614fe4
commit 3f6c088767
1 changed files with 303 additions and 62 deletions
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365
tools/widl/proxy.c
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@ -2,6 +2,7 @@
* IDL Compiler * IDL Compiler
* *
* Copyright 2002 Ove Kaaven * Copyright 2002 Ove Kaaven
* Copyright 2004 Mike McCormack
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public * modify it under the terms of the GNU Lesser General Public
@ -36,30 +37,82 @@
#include "header.h" #include "header.h"
static FILE* proxy; static FILE* proxy;
static int indent = 0;
/* FIXME: support generation of stubless proxies */ /* FIXME: support generation of stubless proxies */
int print_proxy( char *format, ... )
{
va_list va;
int i, r;
va_start( va, format );
for( i=0; i<indent; i++ )
fprintf( proxy, " " );
r = vfprintf( proxy, format, va );
va_end( va );
return r;
}
static void write_stubdescproto(void)
{
print_proxy( "extern const MIDL_STUB_DESC Object_StubDesc;\n");
print_proxy( "\n");
}
static void write_stubdesc(void) static void write_stubdesc(void)
{ {
fprintf(proxy, "const MIDL_STUB_DESC Object_StubDesc = {\n"); print_proxy( "const MIDL_STUB_DESC Object_StubDesc = {\n");
fprintf(proxy, " 0,\n"); print_proxy( " 0,\n");
fprintf(proxy, " NdrOleAllocate,\n"); print_proxy( " NdrOleAllocate,\n");
fprintf(proxy, " NdrOleFree,\n"); print_proxy( " NdrOleFree,\n");
fprintf(proxy, " {0}, 0, 0, 0, 0,\n"); print_proxy( " {0}, 0, 0, 0, 0,\n");
fprintf(proxy, " 0 /* __MIDL_TypeFormatString.Format */\n"); print_proxy( " 0 /* __MIDL_TypeFormatString.Format */\n");
fprintf(proxy, "};\n"); print_proxy( "};\n");
fprintf(proxy, "\n"); print_proxy( "\n");
}
static void write_formatdesc( char *str )
{
print_proxy( "typedef struct _MIDL_%s_FORMAT_STRING {\n", str );
print_proxy( " short Pad;\n");
print_proxy( " unsigned char Format[%s_FORMAT_STRING_SIZE];\n", str);
print_proxy( "} MIDL_%s_FORMAT_STRING;\n", str);
print_proxy( "\n");
}
static void write_formatstringsdecl(void)
{
print_proxy( "#define TYPE_FORMAT_STRING_SIZE %d\n",1); /* FIXME */
print_proxy( "#define PROC_FORMAT_STRING_SIZE %d\n",1); /* FIXME */
print_proxy( "\n");
write_formatdesc( "TYPE" );
write_formatdesc( "PROC" );
print_proxy( "extern const MIDL_TYPE_FORMAT_STRING __MIDL_TypeFormatString;\n");
print_proxy( "extern const MIDL_PROC_FORMAT_STRING __MIDL_ProcFormatString;\n");
print_proxy( "\n");
} }
static void init_proxy(void) static void init_proxy(void)
{ {
if (proxy) return; if (proxy) return;
proxy = fopen(proxy_name, "w"); proxy = fopen(proxy_name, "w");
fprintf(proxy, "/*** Autogenerated by WIDL %s - Do not edit ***/\n", WIDL_FULLVERSION); print_proxy( "/*** Autogenerated by WIDL %s - Do not edit ***/\n", WIDL_FULLVERSION);
fprintf(proxy, "#include \"rpcproxy.h\"\n"); print_proxy( "\n");
fprintf(proxy, "#include \"%s\"\n", header_name); print_proxy( "#ifndef __REDQ_RPCPROXY_H_VERSION__\n");
fprintf(proxy, "\n"); print_proxy( "#define __REDQ_RPCPROXY_H_VERSION__ 440\n");
write_stubdesc(); print_proxy( "#endif /* __REDQ_RPCPROXY_H_VERSION__ */\n");
print_proxy( "\n");
print_proxy( "#include \"rpcproxy.h\"\n");
print_proxy( "\n");
print_proxy( "#ifndef __RPCPROXY_H_VERSION__\n");
print_proxy( "#error This code needs a newer version of rpcproxy.h\n");
print_proxy( "#endif /* __RPCPROXY_H_VERSION__ */\n");
print_proxy( "\n");
print_proxy( "#include \"%s\"\n", header_name);
print_proxy( "\n");
write_formatstringsdecl();
write_stubdescproto();
} }
static void clear_output_vars( var_t *arg ) static void clear_output_vars( var_t *arg )
@ -69,9 +122,9 @@ static void clear_output_vars( var_t *arg )
arg = NEXT_LINK(arg); arg = NEXT_LINK(arg);
} }
while (arg) { while (arg) {
if (is_attr(arg->attrs, ATTR_OUT)) { if (is_attr(arg->attrs, ATTR_OUT) && !is_attr(arg->attrs, ATTR_IN)) {
fprintf( proxy, " if(%s)\n", arg->name ); print_proxy( "if(%s)\n", arg->name );
fprintf( proxy, " MIDL_memset( %s, 0, sizeof( ", arg->name ); print_proxy( " MIDL_memset( %s, 0, sizeof( ", arg->name );
write_type(proxy, arg->type, arg, arg->tname); write_type(proxy, arg->type, arg, arg->tname);
fprintf( proxy, " ));\n" ); fprintf( proxy, " ));\n" );
} }
@ -79,49 +132,221 @@ static void clear_output_vars( var_t *arg )
} }
} }
static void gen_marshall_size( var_t *arg )
{
print_proxy( "_StubMsg.BufferLength = 0U;\n" );
if (arg) {
while (NEXT_LINK(arg))
arg = NEXT_LINK(arg);
}
while (arg) {
if (is_attr(arg->attrs, ATTR_IN)) {
int index = 0;
type_t *type = arg->type;
/* find the base type */
while( type->ref )
type = type->ref;
switch( type->type )
{
case RPC_FC_BYTE:
case RPC_FC_CHAR:
print_proxy( "_StubMsg.BufferLength += %d; /* %s */\n", 1, arg->name );
break;
case RPC_FC_SHORT:
case RPC_FC_USHORT:
case RPC_FC_ENUM16:
print_proxy( "_StubMsg.BufferLength += %d; /* %s */\n", 2, arg->name );
break;
case RPC_FC_LONG:
case RPC_FC_ULONG:
case RPC_FC_ENUM32:
print_proxy( "_StubMsg.BufferLength += %d; /* %s */\n", 4, arg->name );
break;
case RPC_FC_STRUCT:
print_proxy( "NdrSimpleStructBufferSize(&_StubMsg, (unsigned char*)%s, ", arg->name );
fprintf(proxy, "&__MIDL_TypeFormatString.Format[%d] );\n", index );
break;
default:
printf("FIXME: arg %s has unknown type %d\n", arg->name, type->type );
}
}
arg = PREV_LINK(arg);
}
}
static void gen_marshall_copydata( var_t *arg )
{
if (arg) {
while (NEXT_LINK(arg))
arg = NEXT_LINK(arg);
}
while (arg) {
if (is_attr(arg->attrs, ATTR_IN)) {
int index = 0;
type_t *type = arg->type;
/* find the base type */
while( type->ref )
type = type->ref;
switch( type->type )
{
case RPC_FC_BYTE:
case RPC_FC_CHAR:
case RPC_FC_SHORT:
case RPC_FC_USHORT:
case RPC_FC_ENUM16:
case RPC_FC_LONG:
case RPC_FC_ULONG:
case RPC_FC_ENUM32:
print_proxy( "*((");
write_type(proxy, arg->type, arg, arg->tname);
fprintf(proxy,"*)_StubMsg.Buffer)++ = %s;\n", arg->name );
break;
case RPC_FC_STRUCT:
/* FIXME: add the format string, and set the index below */
print_proxy( "NdrSimpleStructMarshall(&_StubMsg, (unsigned char*)%s, ", arg->name );
fprintf(proxy, "&__MIDL_TypeFormatString.Format[%d]);\n", index );
break;
default:
printf("FIXME: arg %s has unknown type %d\n", arg->name, type->type );
}
}
arg = PREV_LINK(arg);
}
}
static void gen_marshall( var_t *arg )
{
/* generated code to determine the size of the buffer required */
gen_marshall_size( arg );
/* generated code to allocate the buffer */
print_proxy( "NdrProxyGetBuffer(This, &_StubMsg);\n" );
/* generated code to copy the args into the buffer */
gen_marshall_copydata( arg );
print_proxy( "\n");
}
static void gen_unmarshall( var_t *arg )
{
if (arg) {
while (NEXT_LINK(arg))
arg = NEXT_LINK(arg);
}
while (arg) {
if (is_attr(arg->attrs, ATTR_OUT)) {
int index = 0;
/* FIXME: add the format string, and set the index below */
print_proxy( "NdrPointerUnmarshall(&_StubMsg, (unsigned char**)&%s, ", arg->name );
fprintf(proxy, "&__MIDL_TypeFormatString.Format[%d], 0);\n", index );
}
arg = PREV_LINK(arg);
}
}
static void gen_proxy(type_t *iface, func_t *cur, int idx) static void gen_proxy(type_t *iface, func_t *cur, int idx)
{ {
var_t *def = cur->def; var_t *def = cur->def;
int has_ret = !is_void(def->type, def); int has_ret = !is_void(def->type, def);
indent = 0;
write_type(proxy, def->type, def, def->tname); write_type(proxy, def->type, def, def->tname);
fprintf(proxy, " CALLBACK %s_", iface->name); print_proxy( " CALLBACK %s_", iface->name);
write_name(proxy, def); write_name(proxy, def);
fprintf(proxy, "_Proxy(\n"); print_proxy( "_Proxy(\n");
write_args(proxy, cur->args, iface->name, 1, TRUE); write_args(proxy, cur->args, iface->name, 1, TRUE);
fprintf(proxy, ")\n"); print_proxy( ")\n");
fprintf(proxy, "{\n"); print_proxy( "{\n");
indent ++;
/* local variables */ /* local variables */
if (has_ret) { if (has_ret) {
fprintf(proxy, " "); print_proxy( "" );
write_type(proxy, def->type, def, def->tname); write_type(proxy, def->type, def, def->tname);
fprintf(proxy, " _Ret;\n"); print_proxy( " _Ret;\n");
} }
fprintf(proxy, " RPC_MESSAGE _Msg;\n"); print_proxy( "RPC_MESSAGE _Msg;\n" );
fprintf(proxy, " MIDL_STUB_MESSAGE _StubMsg;\n"); print_proxy( "MIDL_STUB_MESSAGE _StubMsg;\n" );
fprintf(proxy, "\n"); print_proxy( "\n");
/* FIXME: trace */ /* FIXME: trace */
clear_output_vars( cur->args ); clear_output_vars( cur->args );
fprintf(proxy, " NdrProxyInitialize(This, &_Msg, &_StubMsg, &Object_StubDesc, %d);\n", idx); print_proxy( "RpcTryExcept {\n" );
indent++;
print_proxy( "NdrProxyInitialize(This, &_Msg, &_StubMsg, &Object_StubDesc, %d);\n", idx);
/* FIXME: size buffer */ print_proxy( "RpcTryFinally {\n" );
indent++;
fprintf(proxy, " NdrProxyGetBuffer(This, &_StubMsg);\n"); gen_marshall( cur->args );
/* FIXME: marshall */ print_proxy( "NdrProxySendReceive(This, &_StubMsg);\n" );
print_proxy( "\n");
fprintf(proxy, " NdrProxySendReceive(This, &_StubMsg);\n"); gen_unmarshall( cur->args );
if (has_ret) {
/*
* FIXME: We only need to round the buffer up if it could be unaligned...
* We should calculate how much buffer we used and output the following
* line only if necessary.
*/
print_proxy( "_StubMsg.Buffer = (unsigned char *)(((long)_StubMsg.Buffer + 3) & ~ 0x3);\n");
/* FIXME: unmarshall */ print_proxy( "_Ret = *((" );
write_type(proxy, def->type, def, def->tname);
fprintf(proxy, "*)_StubMsg.Buffer)++;\n");
}
fprintf(proxy, " NdrProxyFreeBuffer(This, &_StubMsg);\n"); indent--;
print_proxy( "}\n");
print_proxy( "RpcFinally {\n" );
indent++;
print_proxy( "NdrProxyFreeBuffer(This, &_StubMsg);\n" );
indent--;
print_proxy( "}\n");
print_proxy( "RpcEndFinally\n" );
indent--;
print_proxy( "}\n" );
print_proxy( "RpcExcept(_StubMsg.dwStubPhase != PROXY_SENDRECEIVE)\n" );
print_proxy( "{\n" );
if (has_ret) {
indent++;
print_proxy( "_Ret = NdrProxyErrorHandler(RpcExceptionCode());\n" );
indent--;
}
print_proxy( "}\n" );
print_proxy( "RpcEndExcept\n" );
if (has_ret) { if (has_ret) {
fprintf(proxy, " return _Ret;\n"); print_proxy( "return _Ret;\n" );
}
indent--;
print_proxy( "}\n");
print_proxy( "\n");
}
static void stub_clear_output_vars( var_t *arg )
{
while (arg) {
print_proxy("(");
write_type(proxy, arg->type, arg, arg->tname);
fprintf(proxy, ") ");
write_name(proxy, arg);
fprintf(proxy, " = 0;\n");
arg = NEXT_LINK(arg);
} }
fprintf(proxy, "}\n");
fprintf(proxy, "\n"); fprintf(proxy, "\n");
} }
@ -131,25 +356,29 @@ static void gen_stub(type_t *iface, func_t *cur, char *cas)
var_t *arg; var_t *arg;
int has_ret = !is_void(def->type, def); int has_ret = !is_void(def->type, def);
fprintf(proxy, "void __RPC_STUB %s_", iface->name); indent = 0;
print_proxy( "void __RPC_STUB %s_", iface->name);
write_name(proxy, def); write_name(proxy, def);
fprintf(proxy, "_Stub(\n"); print_proxy( "_Stub(\n");
fprintf(proxy, " IRpcStubBuffer* This,\n"); indent++;
fprintf(proxy, " IRpcChannelBuffer* pRpcChannelBuffer,\n"); print_proxy( "IRpcStubBuffer* This,\n");
fprintf(proxy, " PRPC_MESSAGE pRpcMessage,\n"); print_proxy( "IRpcChannelBuffer* pRpcChannelBuffer,\n");
fprintf(proxy, " DWORD* pdwStubPhase)\n"); print_proxy( "PRPC_MESSAGE pRpcMessage,\n");
fprintf(proxy, "{\n"); print_proxy( "DWORD* pdwStubPhase)\n");
indent--;
print_proxy( "{\n");
indent++;
/* local variables */ /* local variables */
if (has_ret) { if (has_ret) {
fprintf(proxy, " "); print_proxy("");
write_type(proxy, def->type, def, def->tname); write_type(proxy, def->type, def, def->tname);
fprintf(proxy, " _Ret;\n"); fprintf(proxy, " _Ret;\n");
} }
fprintf(proxy, " %s* _This = (%s*)((CStdStubBuffer*)This)->pvServerObject;\n", iface->name, iface->name); print_proxy("%s* _This = (%s*)((CStdStubBuffer*)This)->pvServerObject;\n", iface->name, iface->name);
fprintf(proxy, " MIDL_STUB_MESSAGE _StubMsg;\n"); print_proxy("MIDL_STUB_MESSAGE _StubMsg;\n");
arg = cur->args; arg = cur->args;
while (arg) { while (arg) {
fprintf(proxy, " "); print_proxy("");
write_type(proxy, arg->type, arg, arg->tname); write_type(proxy, arg->type, arg, arg->tname);
fprintf(proxy, " "); fprintf(proxy, " ");
write_name(proxy, arg); write_name(proxy, arg);
@ -159,14 +388,17 @@ static void gen_stub(type_t *iface, func_t *cur, char *cas)
fprintf(proxy, "\n"); fprintf(proxy, "\n");
/* FIXME: trace */ /* FIXME: trace */
/* FIXME: clear output vars? */
fprintf(proxy, " NdrStubInitialize(pRpcMessage, &_StubMsg, &Object_StubDesc, pRpcChannelBuffer);\n"); print_proxy("NdrStubInitialize(pRpcMessage, &_StubMsg, &Object_StubDesc, pRpcChannelBuffer);\n");
fprintf(proxy, "\n");
/* clear output vars */
stub_clear_output_vars( cur->args );
/* FIXME: unmarshall */ /* FIXME: unmarshall */
fprintf(proxy, " *pdwStubPhase = STUB_CALL_SERVER;\n"); print_proxy("*pdwStubPhase = STUB_CALL_SERVER;\n");
fprintf(proxy, " "); print_proxy("");
if (has_ret) fprintf(proxy, "_Ret = "); if (has_ret) fprintf(proxy, "_Ret = ");
fprintf(proxy, "%s_", iface->name); fprintf(proxy, "%s_", iface->name);
if (cas) fprintf(proxy, "%s_Stub", cas); if (cas) fprintf(proxy, "%s_Stub", cas);
@ -182,16 +414,17 @@ static void gen_stub(type_t *iface, func_t *cur, char *cas)
} }
} }
fprintf(proxy, ");\n"); fprintf(proxy, ");\n");
fprintf(proxy, " *pdwStubPhase = STUB_MARSHAL;\n"); print_proxy("*pdwStubPhase = STUB_MARSHAL;\n");
/* FIXME: size buffer */ /* FIXME: size buffer */
fprintf(proxy, " NdrStubGetBuffer(This, pRpcChannelBuffer, &_StubMsg);\n"); print_proxy("NdrStubGetBuffer(This, pRpcChannelBuffer, &_StubMsg);\n");
/* FIXME: marshall */ /* FIXME: marshall */
indent--;
fprintf(proxy, "}\n"); print_proxy("}\n");
fprintf(proxy, "\n"); print_proxy("\n");
} }
static int write_proxy_methods(type_t *iface) static int write_proxy_methods(type_t *iface)
@ -275,6 +508,8 @@ static void write_proxy(type_t *iface)
cur = PREV_LINK(cur); cur = PREV_LINK(cur);
} }
write_stubdesc();
/* proxy vtable */ /* proxy vtable */
fprintf(proxy, "const CINTERFACE_PROXY_VTABLE(%d) %sProxyVtbl = {\n", midx, iface->name); fprintf(proxy, "const CINTERFACE_PROXY_VTABLE(%d) %sProxyVtbl = {\n", midx, iface->name);
fprintf(proxy, " {&IID_%s},\n", iface->name); fprintf(proxy, " {&IID_%s},\n", iface->name);
@ -322,7 +557,8 @@ void write_proxies(ifref_t *ifaces)
fprintf(proxy, "const CInterfaceProxyVtbl* _%s_ProxyVtblList[] = {\n", file_id); fprintf(proxy, "const CInterfaceProxyVtbl* _%s_ProxyVtblList[] = {\n", file_id);
cur = lcur; cur = lcur;
while (cur) { while (cur) {
fprintf(proxy, " (CInterfaceProxyVtbl*)&%sProxyVtbl,\n", cur->iface->name); if(cur->iface->ref)
fprintf(proxy, " (CInterfaceProxyVtbl*)&%sProxyVtbl,\n", cur->iface->name);
cur = PREV_LINK(cur); cur = PREV_LINK(cur);
} }
fprintf(proxy, " 0\n"); fprintf(proxy, " 0\n");
@ -332,7 +568,8 @@ void write_proxies(ifref_t *ifaces)
fprintf(proxy, "const CInterfaceStubVtbl* _%s_StubVtblList[] = {\n", file_id); fprintf(proxy, "const CInterfaceStubVtbl* _%s_StubVtblList[] = {\n", file_id);
cur = lcur; cur = lcur;
while (cur) { while (cur) {
fprintf(proxy, " (CInterfaceStubVtbl*)&%sStubVtbl,\n", cur->iface->name); if(cur->iface->ref)
fprintf(proxy, " (CInterfaceStubVtbl*)&%sStubVtbl,\n", cur->iface->name);
cur = PREV_LINK(cur); cur = PREV_LINK(cur);
} }
fprintf(proxy, " 0\n"); fprintf(proxy, " 0\n");
@ -342,26 +579,30 @@ void write_proxies(ifref_t *ifaces)
fprintf(proxy, "const PCInterfaceName _%s_InterfaceNamesList[] = {\n", file_id); fprintf(proxy, "const PCInterfaceName _%s_InterfaceNamesList[] = {\n", file_id);
cur = lcur; cur = lcur;
while (cur) { while (cur) {
fprintf(proxy, " \"%s\",\n", cur->iface->name); if(cur->iface->ref)
fprintf(proxy, " \"%s\",\n", cur->iface->name);
cur = PREV_LINK(cur); cur = PREV_LINK(cur);
} }
fprintf(proxy, " 0\n"); fprintf(proxy, " 0\n");
fprintf(proxy, "};\n"); fprintf(proxy, "};\n");
fprintf(proxy, "\n"); fprintf(proxy, "\n");
fprintf(proxy, "#define _%s_CHECK_IID(n) IID_GENERIC_CHECK_IID(_XXX, pIID, n)\n", file_id); fprintf(proxy, "#define _%s_CHECK_IID(n) IID_GENERIC_CHECK_IID(_%s, pIID, n)\n", file_id, file_id);
fprintf(proxy, "\n"); fprintf(proxy, "\n");
fprintf(proxy, "int __stdcall _%s_IID_Lookup(const IID* pIID, int* pIndex)\n", file_id); fprintf(proxy, "int __stdcall _%s_IID_Lookup(const IID* pIID, int* pIndex)\n", file_id);
fprintf(proxy, "{\n"); fprintf(proxy, "{\n");
cur = lcur; cur = lcur;
c = 0; c = 0;
while (cur) { while (cur) {
fprintf(proxy, " if (!_%s_CHECK_IID(%d)) {\n", file_id, c); if(cur->iface->ref)
fprintf(proxy, " *pIndex = %d\n", c); {
fprintf(proxy, " return 1;\n"); fprintf(proxy, " if (!_%s_CHECK_IID(%d)) {\n", file_id, c);
fprintf(proxy, " }\n"); fprintf(proxy, " *pIndex = %d;\n", c);
fprintf(proxy, " return 1;\n");
fprintf(proxy, " }\n");
c++;
}
cur = PREV_LINK(cur); cur = PREV_LINK(cur);
c++;
} }
fprintf(proxy, " return 0;\n"); fprintf(proxy, " return 0;\n");
fprintf(proxy, "}\n"); fprintf(proxy, "}\n");