Code for the compiler described in my blog
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#pragma once
#include <memory>
#include <vector>
#include <set>
#include "instruction.hpp"
#include "llvm_context.hpp"
#include "parsed_type.hpp"
#include "type_env.hpp"
struct ast;
using ast_ptr = std::unique_ptr<ast>;
struct constructor {
std::string name;
std::vector<parsed_type_ptr> types;
int8_t tag;
constructor(std::string n, std::vector<parsed_type_ptr> ts)
: name(std::move(n)), types(std::move(ts)) {}
using constructor_ptr = std::unique_ptr<constructor>;
struct definition_defn {
std::string name;
std::vector<std::string> params;
ast_ptr body;
type_env_ptr env;
type_env_ptr var_env;
std::set<std::string> free_variables;
type_ptr full_type;
type_ptr return_type;
std::vector<instruction_ptr> instructions;
llvm::Function* generated_function;
definition_defn(std::string n, std::vector<std::string> p, ast_ptr b)
: name(std::move(n)), params(std::move(p)), body(std::move(b)) {
void find_free(type_mgr& mgr, type_env_ptr& env);
void insert_types(type_mgr& mgr);
void typecheck(type_mgr& mgr);
void compile();
void declare_llvm(llvm_context& ctx);
void generate_llvm(llvm_context& ctx);
using definition_defn_ptr = std::unique_ptr<definition_defn>;
struct definition_data {
std::string name;
std::vector<std::string> vars;
std::vector<constructor_ptr> constructors;
type_env_ptr env;
std::string n,
std::vector<std::string> vs,
std::vector<constructor_ptr> cs)
: name(std::move(n)), vars(std::move(vs)), constructors(std::move(cs)) {}
void insert_types(type_env_ptr& env);
void insert_constructors() const;
void generate_llvm(llvm_context& ctx);
using definition_data_ptr = std::unique_ptr<definition_data>;