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Added variable deletion

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niansa 2021-03-07 00:06:09 +01:00
parent ba4f67517c
commit 361e6528c0
1 changed files with 13 additions and 0 deletions
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13
modules/std.cpp
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@ -37,6 +37,18 @@ public:
(*env->globalScope)[std::get<std::string>(args[0].data)] = std::make_shared<Variable>(args[1]); (*env->globalScope)[std::get<std::string>(args[0].data)] = std::make_shared<Variable>(args[1]);
return args[1]; return args[1];
} }
static Variable del(SharedEnvironment env, Cmdargs& args) {
auto& scope = env->currScope();
auto res = scope.find(std::get<std::string>(args[0].data));
if (res == scope.end()) {
throw exceptions::NoSuchVariable();
}
scope.erase(res);
return Variable({
Variable::id_null,
0
});
}
static Variable concat(SharedEnvironment, Cmdargs& args) { static Variable concat(SharedEnvironment, Cmdargs& args) {
std::ostringstream fres; std::ostringstream fres;
@ -61,6 +73,7 @@ public:
builtinCmds["="] = builtinCmds["set"] = {set, {Variable::id_string, Variable::id_any}, false}; builtinCmds["="] = builtinCmds["set"] = {set, {Variable::id_string, Variable::id_any}, false};
builtinCmds[":="] = builtinCmds["local"] = {local, {Variable::id_string, Variable::id_any}, false}; builtinCmds[":="] = builtinCmds["local"] = {local, {Variable::id_string, Variable::id_any}, false};
builtinCmds["!="] = builtinCmds["global"] = {global, {Variable::id_string, Variable::id_any}, false}; builtinCmds["!="] = builtinCmds["global"] = {global, {Variable::id_string, Variable::id_any}, false};
builtinCmds["delete"] = {del, {Variable::id_string}, false};
builtinCmds["concat"] = {concat, {}, true}; builtinCmds["concat"] = {concat, {}, true};
} }
}; };