generic-library/ChaiScript
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Don't add 'this' if it was explicitly captured

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This commit is contained in:
Jason Turner 2017-01-31 13:25:26 -08:00
parent 94fb7c2453
commit ca87c05cd4
1 changed files with 16 additions and 5 deletions
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21
include/chaiscript/language/chaiscript_eval.hpp
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@ -49,7 +49,7 @@ namespace chaiscript
{
/// Helper function that will set up the scope around a function call, including handling the named function parameters
template<typename T>
static Boxed_Value eval_function(chaiscript::detail::Dispatch_Engine &t_ss, const AST_Node_Impl_Ptr<T> &t_node, const std::vector<std::string> &t_param_names, const std::vector<Boxed_Value> &t_vals, const std::map<std::string, Boxed_Value> *t_locals=nullptr) {
static Boxed_Value eval_function(chaiscript::detail::Dispatch_Engine &t_ss, const AST_Node_Impl_Ptr<T> &t_node, const std::vector<std::string> &t_param_names, const std::vector<Boxed_Value> &t_vals, const std::map<std::string, Boxed_Value> *t_locals=nullptr, bool has_this_capture = false) {
chaiscript::detail::Dispatch_State state(t_ss);
const Boxed_Value *thisobj = [&]() -> const Boxed_Value *{
@ -64,7 +64,7 @@ namespace chaiscript
}();
chaiscript::eval::detail::Stack_Push_Pop tpp(state);
if (thisobj) { state.add_object("this", *thisobj); }
if (thisobj && !has_this_capture) { state.add_object("this", *thisobj); }
if (t_locals) {
for (const auto &local : *t_locals) {
@ -618,7 +618,9 @@ namespace chaiscript
struct Lambda_AST_Node final : AST_Node_Impl<T> {
Lambda_AST_Node(std::string t_ast_node_text, Parse_Location t_loc, std::vector<AST_Node_Impl_Ptr<T>> t_children) :
AST_Node_Impl<T>(t_ast_node_text, AST_Node_Type::Lambda, std::move(t_loc), std::move(t_children)),
m_param_names(Arg_List_AST_Node<T>::get_arg_names(this->children[1])) { }
m_param_names(Arg_List_AST_Node<T>::get_arg_names(this->children[1])),
m_this_capture(has_this_capture(this->children[0]->children))
{ }
Boxed_Value eval_internal(const chaiscript::detail::Dispatch_State &t_ss) const override {
@ -638,17 +640,26 @@ namespace chaiscript
return Boxed_Value(
dispatch::make_dynamic_proxy_function(
[engine, lambda_node, param_names = this->m_param_names, captures](const std::vector<Boxed_Value> &t_params)
[engine, lambda_node, param_names = this->m_param_names, captures, this_capture = this->m_this_capture](const std::vector<Boxed_Value> &t_params)
{
return detail::eval_function(engine, lambda_node, param_names, t_params, &captures);
return detail::eval_function(engine, lambda_node, param_names, t_params, &captures, this_capture);
},
static_cast<int>(numparams), lambda_node, param_types
)
);
}
static bool has_this_capture(const std::vector<AST_Node_Impl_Ptr<T>> &children) {
return std::any_of(begin(children), end(children),
[](const auto &child){
return child->children[0]->text == "this";
}
);
}
private:
const std::vector<std::string> m_param_names;
const bool m_this_capture = false;
};