generic-library/ChaiScript
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Simplify and reduce eval code where possible

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This commit is contained in:
Jason Turner 2015-04-27 16:17:01 -06:00
parent b2b604e2ad
commit dbe546fefb
1 changed files with 56 additions and 74 deletions
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130
include/chaiscript/language/chaiscript_eval.hpp
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@ -225,14 +225,11 @@ namespace chaiscript
virtual Boxed_Value eval_internal(chaiscript::detail::Dispatch_Engine &t_ss) const CHAISCRIPT_OVERRIDE{
chaiscript::eval::detail::Function_Push_Pop fpp(t_ss);
std::vector<Boxed_Value> params;
if ((this->children.size() > 1)) {
params.reserve(this->children[1]->children.size());
for (const auto &child : this->children[1]->children) {
params.push_back(child->eval(t_ss));
}
params.reserve(this->children[1]->children.size());
for (const auto &child : this->children[1]->children) {
params.push_back(child->eval(t_ss));
}
fpp.save_params(params);
@ -388,14 +385,12 @@ namespace chaiscript
std::vector<Boxed_Value> params;
chaiscript::eval::detail::Function_Push_Pop fpp(t_ss);
if (this->children.size() > 1) {
for (const auto &child : this->children[1]->children) {
params.push_back(child->eval(t_ss));
}
for (const auto &child : this->children[1]->children) {
params.push_back(child->eval(t_ss));
}
Const_Proxy_Function fn;
Const_Proxy_Function fn;
try {
Boxed_Value bv = this->children[0]->eval(t_ss);
try {
@ -622,16 +617,16 @@ namespace chaiscript
} else {
const std::string &idname = this->children[0]->text;
Boxed_Value bv;
try {
Boxed_Value bv;
t_ss.add_object(idname, bv);
return bv;
}
catch (const exception::reserved_word_error &) {
throw exception::eval_error("Reserved word used as variable '" + idname + "'");
} catch (const exception::name_conflict_error &e) {
throw exception::eval_error("Variable redefined '" + e.name() + "'");
}
return bv;
}
}
@ -652,25 +647,17 @@ namespace chaiscript
virtual Boxed_Value eval_internal(chaiscript::detail::Dispatch_Engine &t_ss) const CHAISCRIPT_OVERRIDE{
chaiscript::eval::detail::Function_Push_Pop fpp(t_ss);
Boxed_Value retval(this->children[0]->eval(t_ss));
std::vector<Boxed_Value> params{retval};
std::vector<Boxed_Value> params{this->children[0]->eval(t_ss), children[1]->eval(t_ss)};
for (size_t i = 1; i < this->children.size(); ++i) {
try {
Boxed_Value p1(this->children[i]->eval(t_ss));
chaiscript::eval::detail::Stack_Push_Pop spp(t_ss);
params.push_back(p1);
fpp.save_params(params);
params.clear();
retval = t_ss.call_function("[]", retval, std::move(p1));
}
catch(const exception::dispatch_error &e){
throw exception::eval_error("Can not find appropriate array lookup operator '[]'.", e.parameters, e.functions, false, t_ss );
}
try {
chaiscript::eval::detail::Stack_Push_Pop spp(t_ss);
fpp.save_params(params);
return t_ss.call_function("[]", params);
}
catch(const exception::dispatch_error &e){
throw exception::eval_error("Can not find appropriate array lookup operator '[]'.", e.parameters, e.functions, false, t_ss );
}
return retval;
}
virtual std::string pretty_print() const CHAISCRIPT_OVERRIDE
@ -696,59 +683,54 @@ namespace chaiscript
virtual ~Dot_Access_AST_Node() {}
virtual Boxed_Value eval_internal(chaiscript::detail::Dispatch_Engine &t_ss) const CHAISCRIPT_OVERRIDE{
chaiscript::eval::detail::Function_Push_Pop fpp(t_ss);
Boxed_Value retval = this->children[0]->eval(t_ss);
std::vector<Boxed_Value> params{retval};
if (this->children.size() > 1) {
for (size_t i = 2; i < this->children.size(); i+=2) {
std::vector<Boxed_Value> params{retval};
bool has_function_params = false;
bool has_function_params = false;
if (this->children[2]->children.size() > 1) {
has_function_params = true;
for (const auto &child : this->children[2]->children[1]->children) {
params.push_back(child->eval(t_ss));
}
}
if (this->children[i]->children.size() > 1) {
has_function_params = true;
for (const auto &child : this->children[i]->children[1]->children) {
params.push_back(child->eval(t_ss));
}
}
fpp.save_params(params);
fpp.save_params(params);
std::string fun_name = [&]()->std::string{
if ((this->children[2]->identifier == AST_Node_Type::Fun_Call) || (this->children[2]->identifier == AST_Node_Type::Array_Call)) {
return this->children[2]->children[0]->text;
}
else {
return this->children[2]->text;
}
}();
std::string fun_name = [&]()->std::string{
if ((this->children[i]->identifier == AST_Node_Type::Fun_Call) || (this->children[i]->identifier == AST_Node_Type::Array_Call)) {
return this->children[i]->children[0]->text;
}
else {
return this->children[i]->text;
}
}();
try {
chaiscript::eval::detail::Stack_Push_Pop spp(t_ss);
t_ss.add_object("this", retval);
retval = t_ss.call_member(fun_name, std::move(params), has_function_params);
}
catch(const exception::dispatch_error &e){
if (e.functions.empty())
{
throw exception::eval_error("'" + fun_name + "' is not a function.");
} else {
throw exception::eval_error(std::string(e.what()) + " for function '" + fun_name + "'", e.parameters, e.functions, true, t_ss);
}
}
catch(detail::Return_Value &rv) {
retval = std::move(rv.retval);
}
try {
chaiscript::eval::detail::Stack_Push_Pop spp(t_ss);
t_ss.add_object("this", retval);
retval = t_ss.call_member(fun_name, std::move(params), has_function_params);
}
catch(const exception::dispatch_error &e){
if (e.functions.empty())
{
throw exception::eval_error("'" + fun_name + "' is not a function.");
} else {
throw exception::eval_error(std::string(e.what()) + " for function '" + fun_name + "'", e.parameters, e.functions, true, t_ss);
}
}
catch(detail::Return_Value &rv) {
retval = std::move(rv.retval);
}
if (this->children[i]->identifier == AST_Node_Type::Array_Call) {
for (size_t j = 1; j < this->children[i]->children.size(); ++j) {
try {
retval = t_ss.call_function("[]", retval, this->children[i]->children[j]->eval(t_ss));
}
catch(const exception::dispatch_error &e){
throw exception::eval_error("Can not find appropriate array lookup operator '[]'.", e.parameters, e.functions, true, t_ss);
}
}
}
if (this->children[2]->identifier == AST_Node_Type::Array_Call) {
try {
retval = t_ss.call_function("[]", retval, this->children[2]->children[1]->eval(t_ss));
}
catch(const exception::dispatch_error &e){
throw exception::eval_error("Can not find appropriate array lookup operator '[]'.", e.parameters, e.functions, true, t_ss);
}
}