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/*
* MRustC - Mutabah's Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* trans/codegen_c.hpp
* - C codegen backend (internal header)
*/
#pragma once
#include <vector>
#include <memory>
class Node;
struct NodeRef
{
::std::unique_ptr<Node> node;
size_t bb_idx;
NodeRef(size_t idx);
NodeRef(Node node);
bool has_target() const;
size_t target() const;
bool operator==(size_t idx) const {
return !node && bb_idx == idx;
}
};
// A node corresponds to a C statement/block
TAGGED_UNION(Node, Block,
(Block, struct {
size_t next_bb;
::std::vector<NodeRef> nodes;
}),
(If, struct {
size_t next_bb;
const ::MIR::LValue* val;
NodeRef arm_true;
NodeRef arm_false;
}),
(Switch, struct {
size_t next_bb;
const ::MIR::LValue* val;
::std::vector<NodeRef> arms;
}),
(SwitchValue, struct {
size_t next_bb;
const ::MIR::LValue* val;
NodeRef def_arm;
::std::vector<NodeRef> arms;
const ::MIR::SwitchValues* vals;
}),
(Loop, struct {
size_t next_bb;
NodeRef code;
})
);
extern ::std::vector<Node> MIR_To_Structured(const ::MIR::Function& fcn);
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