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node_block.cpp
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node_block.cpp
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#include "exception.hpp"
#include "output.hpp"
#include "type.hpp"
#include "node.hpp"
#include "block.hpp"
namespace libblock {
NodeBlock::NodeBlock(
Node &_source,
std::gc_vector<std::reference_wrapper<Block>> &&_blocks
):
source {_source},
blocks {std::move(_blocks)} {}
void NodeBlock::addBlock(Block &block) {
blocks.push_back(block);
}
void NodeBlock::buildCall(
Session &session,
Instance &caller,
size_t position,
std::gc_function<void (Block &, Instance &)> &&before,
std::gc_function<void (Block &, Instance &)> &&after
) {
if (blocks.size() > 1) {
Block *selected_p {nullptr};
for (Block &block: blocks) {
if (
forkTry([&]() {
block.buildCall(
session, caller, position,
std::move(before),
std::move(after)
);
})
) {
if (selected_p) {
throw ErrorOverloadAmbiguous {};
} else {
selected_p = █
}
}
}
if (selected_p) {
selected_p->buildCall(
session, caller, position,
std::move(before),
std::move(after)
);
} else {
throw ErrorOverloadNotFound {};
}
} else if (blocks.size() == 1) {
blocks.front().get().buildCall(
session, caller, position,
std::move(before),
std::move(after)
);
} else {
throw ErrorBlockNotFound {};
}
}
void NodeBlock::buildProc(
Session &,
Instance &
) {
throw ErrorDiscardNotAllowed {};
}
Type &NodeBlock::buildOut(
Session &session,
Instance &instance,
std::gc_function<std::string (Type &)> &&target
) {
// get type
Type &parent {
source.buildOut(
session, instance,
std::move(target)
)
};
Type &type {
*new (GC) TypeClosure {
parent, *this
}
};
// return
return type;
}
void NodeBlock::buildIn(
Session &,
Instance &, Type &,
std::gc_function<std::string (Type &)> &&
) {
throw ErrorWriteNotAllowed {};
}
}