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Sweden-Number/dlls/jscript/function.c

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/*
* Copyright 2008 Jacek Caban for CodeWeavers
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "jscript.h"
#include "engine.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(jscript);
typedef struct {
DispatchEx dispex;
builtin_invoke_t value_proc;
DWORD flags;
source_elements_t *source;
parameter_t *parameters;
scope_chain_t *scope_chain;
parser_ctx_t *parser;
const WCHAR *src_str;
DWORD src_len;
DWORD length;
} FunctionInstance;
static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
static const WCHAR lengthW[] = {'l','e','n','g','t','h',0};
static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
static const WCHAR toLocaleStringW[] = {'t','o','L','o','c','a','l','e','S','t','r','i','n','g',0};
static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
static const WCHAR applyW[] = {'a','p','p','l','y',0};
static const WCHAR callW[] = {'c','a','l','l',0};
static const WCHAR hasOwnPropertyW[] = {'h','a','s','O','w','n','P','r','o','p','e','r','t','y',0};
static const WCHAR propertyIsEnumerableW[] = {'p','r','o','p','e','r','t','y','I','s','E','n','u','m','e','r','a','b','l','e',0};
static const WCHAR isPrototypeOfW[] = {'i','s','P','r','o','t','o','t','y','p','e','O','f',0};
static IDispatch *get_this(DISPPARAMS *dp)
{
DWORD i;
for(i=0; i < dp->cNamedArgs; i++) {
if(dp->rgdispidNamedArgs[i] == DISPID_THIS) {
if(V_VT(dp->rgvarg+i) == VT_DISPATCH)
return V_DISPATCH(dp->rgvarg+i);
WARN("This is not VT_DISPATCH\n");
return NULL;
}
}
TRACE("no this passed\n");
return NULL;
}
static HRESULT init_parameters(DispatchEx *var_disp, FunctionInstance *function, LCID lcid, DISPPARAMS *dp,
jsexcept_t *ei, IServiceProvider *caller)
{
parameter_t *param;
VARIANT var_empty;
DWORD cargs, i=0;
HRESULT hres;
V_VT(&var_empty) = VT_EMPTY;
cargs = dp->cArgs - dp->cNamedArgs;
for(param = function->parameters; param; param = param->next) {
hres = jsdisp_propput_name(var_disp, param->identifier, lcid,
i < cargs ? dp->rgvarg + dp->cArgs-1 - i : &var_empty,
ei, caller);
if(FAILED(hres))
return hres;
i++;
}
return S_OK;
}
static HRESULT init_arguments(DispatchEx *arg_disp, FunctionInstance *function, LCID lcid, DISPPARAMS *dp,
jsexcept_t *ei, IServiceProvider *caller)
{
VARIANT var;
DWORD i;
HRESULT hres;
for(i=0; i < dp->cArgs-dp->cNamedArgs; i++) {
hres = jsdisp_propput_idx(arg_disp, i, lcid, dp->rgvarg+dp->cArgs-1-i, ei, caller);
if(FAILED(hres))
return hres;
}
V_VT(&var) = VT_I4;
V_I4(&var) = dp->cArgs - dp->cNamedArgs;
return jsdisp_propput_name(arg_disp, lengthW, lcid, &var, ei, caller);
}
static HRESULT create_var_disp(FunctionInstance *function, LCID lcid, DISPPARAMS *dp, jsexcept_t *ei,
IServiceProvider *caller, DispatchEx **ret)
{
DispatchEx *var_disp, *arg_disp;
HRESULT hres;
static const WCHAR argumentsW[] = {'a','r','g','u','m','e','n','t','s',0};
hres = create_dispex(function->dispex.ctx, NULL, NULL, &var_disp);
if(FAILED(hres))
return hres;
hres = create_dispex(function->dispex.ctx, NULL, NULL, &arg_disp);
if(SUCCEEDED(hres)) {
hres = init_arguments(arg_disp, function, lcid, dp, ei, caller);
if(SUCCEEDED(hres)) {
VARIANT var;
V_VT(&var) = VT_DISPATCH;
V_DISPATCH(&var) = (IDispatch*)_IDispatchEx_(arg_disp);
hres = jsdisp_propput_name(var_disp, argumentsW, lcid, &var, ei, caller);
}
jsdisp_release(arg_disp);
}
if(SUCCEEDED(hres))
hres = init_parameters(var_disp, function, lcid, dp, ei, caller);
if(FAILED(hres)) {
jsdisp_release(var_disp);
return hres;
}
*ret = var_disp;
return S_OK;
}
static HRESULT invoke_source(FunctionInstance *function, IDispatch *this_obj, LCID lcid, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
{
DispatchEx *var_disp;
exec_ctx_t *exec_ctx;
scope_chain_t *scope;
HRESULT hres;
if(!function->source) {
FIXME("no source\n");
return E_FAIL;
}
hres = create_var_disp(function, lcid, dp, ei, caller, &var_disp);
if(FAILED(hres))
return hres;
hres = scope_push(function->scope_chain, var_disp, &scope);
if(SUCCEEDED(hres)) {
hres = create_exec_ctx(this_obj, var_disp, scope, &exec_ctx);
scope_release(scope);
}
if(FAILED(hres))
return hres;
hres = exec_source(exec_ctx, function->parser, function->source, ei, retv);
exec_release(exec_ctx);
return hres;
}
static HRESULT invoke_function(FunctionInstance *function, LCID lcid, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
{
IDispatch *this_obj;
if(!(this_obj = get_this(dp)))
this_obj = (IDispatch*)_IDispatchEx_(function->dispex.ctx->script_disp);
return invoke_source(function, this_obj, lcid, dp, retv, ei, caller);
}
static HRESULT invoke_constructor(FunctionInstance *function, LCID lcid, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
{
DispatchEx *this_obj;
HRESULT hres;
hres = create_object(function->dispex.ctx, &function->dispex, &this_obj);
if(FAILED(hres))
return hres;
hres = invoke_source(function, (IDispatch*)_IDispatchEx_(this_obj), lcid, dp, retv, ei, caller);
jsdisp_release(this_obj);
if(FAILED(hres))
return hres;
V_VT(retv) = VT_DISPATCH;
V_DISPATCH(retv) = (IDispatch*)_IDispatchEx_(this_obj);
return S_OK;
}
static HRESULT invoke_value_proc(FunctionInstance *function, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
{
DispatchEx *this_obj = NULL;
IDispatch *this_disp;
HRESULT hres;
this_disp = get_this(dp);
if(this_disp)
this_obj = iface_to_jsdisp((IUnknown*)this_disp);
hres = function->value_proc(this_obj ? this_obj : function->dispex.ctx->script_disp, lcid,
flags, dp, retv, ei, caller);
if(this_obj)
jsdisp_release(this_obj);
return hres;
}
static HRESULT function_to_string(FunctionInstance *function, BSTR *ret)
{
BSTR str;
if(function->value_proc) {
FIXME("Builtin functions not implemented\n");
return E_NOTIMPL;
}
str = SysAllocStringLen(function->src_str, function->src_len);
if(!str)
return E_OUTOFMEMORY;
*ret = str;
return S_OK;
}
static HRESULT Function_length(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FunctionInstance *This = (FunctionInstance*)dispex;
TRACE("%p %d\n", This, This->length);
switch(flags) {
case DISPATCH_PROPERTYGET:
V_VT(retv) = VT_I4;
V_I4(retv) = This->length;
break;
default:
FIXME("unimplemented flags %x\n", flags);
return E_NOTIMPL;
}
return S_OK;
}
static HRESULT Function_toString(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FunctionInstance *function;
BSTR str;
HRESULT hres;
TRACE("\n");
if(!is_class(dispex, JSCLASS_FUNCTION)) {
FIXME("throw TypeError\n");
return E_FAIL;
}
function = (FunctionInstance*)dispex;
hres = function_to_string(function, &str);
if(FAILED(hres))
return hres;
if(retv) {
V_VT(retv) = VT_BSTR;
V_BSTR(retv) = str;
}else {
SysFreeString(str);
}
return S_OK;
}
static HRESULT Function_toLocaleString(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT Function_valueOf(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT Function_apply(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT Function_call(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT Function_hasOwnProperty(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT Function_propertyIsEnumerable(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT Function_isPrototypeOf(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT Function_value(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
{
FunctionInstance *function;
TRACE("\n");
if(dispex->builtin_info->class != JSCLASS_FUNCTION) {
ERR("dispex is not a function\n");
return E_FAIL;
}
function = (FunctionInstance*)dispex;
switch(flags) {
case DISPATCH_METHOD:
if(function->value_proc)
return invoke_value_proc(function, lcid, flags, dp, retv, ei, caller);
return invoke_function(function, lcid, dp, retv, ei, caller);
case DISPATCH_PROPERTYGET: {
HRESULT hres;
BSTR str;
hres = function_to_string(function, &str);
if(FAILED(hres))
return hres;
V_VT(retv) = VT_BSTR;
V_BSTR(retv) = str;
break;
}
case DISPATCH_CONSTRUCT:
if(function->value_proc)
return invoke_value_proc(function, lcid, flags, dp, retv, ei, caller);
return invoke_constructor(function, lcid, dp, retv, ei, caller);
default:
FIXME("not implemented flags %x\n", flags);
return E_NOTIMPL;
}
return S_OK;
}
static void Function_destructor(DispatchEx *dispex)
{
FunctionInstance *This = (FunctionInstance*)dispex;
if(This->parser)
parser_release(This->parser);
if(This->scope_chain)
scope_release(This->scope_chain);
heap_free(This);
}
static const builtin_prop_t Function_props[] = {
{applyW, Function_apply, PROPF_METHOD},
{callW, Function_call, PROPF_METHOD},
{hasOwnPropertyW, Function_hasOwnProperty, PROPF_METHOD},
{isPrototypeOfW, Function_isPrototypeOf, PROPF_METHOD},
{lengthW, Function_length, 0},
{propertyIsEnumerableW, Function_propertyIsEnumerable, PROPF_METHOD},
{toLocaleStringW, Function_toLocaleString, PROPF_METHOD},
{toStringW, Function_toString, PROPF_METHOD},
{valueOfW, Function_valueOf, PROPF_METHOD}
};
static const builtin_info_t Function_info = {
JSCLASS_FUNCTION,
{NULL, Function_value, 0},
sizeof(Function_props)/sizeof(*Function_props),
Function_props,
Function_destructor,
NULL
};
static HRESULT FunctionConstr_value(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT FunctionProt_value(DispatchEx *dispex, LCID lcid, WORD flags, DISPPARAMS *dp,
VARIANT *retv, jsexcept_t *ei, IServiceProvider *sp)
{
FIXME("\n");
return E_NOTIMPL;
}
static HRESULT create_function(script_ctx_t *ctx, DWORD flags, BOOL funcprot, DispatchEx *prototype, FunctionInstance **ret)
{
FunctionInstance *function;
HRESULT hres;
function = heap_alloc_zero(sizeof(FunctionInstance));
if(!function)
return E_OUTOFMEMORY;
if(funcprot)
hres = init_dispex(&function->dispex, ctx, &Function_info, prototype);
else
hres = init_dispex_from_constr(&function->dispex, ctx, &Function_info, ctx->function_constr);
if(FAILED(hres))
return hres;
function->flags = flags;
function->length = flags & PROPF_ARGMASK;
if(prototype) {
jsexcept_t jsexcept;
VARIANT var;
V_VT(&var) = VT_DISPATCH;
V_DISPATCH(&var) = (IDispatch*)_IDispatchEx_(prototype);
memset(&jsexcept, 0, sizeof(jsexcept));
hres = jsdisp_propput_name(&function->dispex, prototypeW, ctx->lcid, &var, &jsexcept, NULL/*FIXME*/);
if(FAILED(hres)) {
IDispatchEx_Release(_IDispatchEx_(&function->dispex));
return hres;
}
}
*ret = function;
return S_OK;
}
HRESULT create_builtin_function(script_ctx_t *ctx, builtin_invoke_t value_proc, DWORD flags,
DispatchEx *prototype, DispatchEx **ret)
{
FunctionInstance *function;
HRESULT hres;
hres = create_function(ctx, flags, FALSE, prototype, &function);
if(FAILED(hres))
return hres;
function->value_proc = value_proc;
*ret = &function->dispex;
return S_OK;
}
HRESULT create_source_function(parser_ctx_t *ctx, parameter_t *parameters, source_elements_t *source,
scope_chain_t *scope_chain, const WCHAR *src_str, DWORD src_len, DispatchEx **ret)
{
FunctionInstance *function;
DispatchEx *prototype;
parameter_t *iter;
DWORD length = 0;
HRESULT hres;
hres = create_object(ctx->script, NULL, &prototype);
if(FAILED(hres))
return hres;
hres = create_function(ctx->script, PROPF_CONSTR, FALSE, prototype, &function);
jsdisp_release(prototype);
if(FAILED(hres))
return hres;
function->source = source;
function->parameters = parameters;
if(scope_chain) {
scope_addref(scope_chain);
function->scope_chain = scope_chain;
}
parser_addref(ctx);
function->parser = ctx;
for(iter = parameters; iter; iter = iter->next)
length++;
function->length = length;
function->src_str = src_str;
function->src_len = src_len;
*ret = &function->dispex;
return S_OK;
}
HRESULT init_function_constr(script_ctx_t *ctx)
{
FunctionInstance *prot, *constr;
HRESULT hres;
hres = create_function(ctx, PROPF_CONSTR, TRUE, NULL, &prot);
if(FAILED(hres))
return hres;
prot->value_proc = FunctionProt_value;
hres = create_function(ctx, PROPF_CONSTR, TRUE, &prot->dispex, &constr);
jsdisp_release(&prot->dispex);
if(FAILED(hres))
return hres;
constr->value_proc = FunctionConstr_value;
ctx->function_constr = &constr->dispex;
return hres;
}
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