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Add tree structure code

master
Danila Fedorin 3 years ago
parent
commit
c1e4433011
  1. 94
      tree.hpp

94
tree.hpp

@ -0,0 +1,94 @@
#pragma once
#include <memory>
#include <vector>
enum class binop {
plus,
minus,
times,
divide,
land,
lor,
eq,
neq,
lt,
lte,
gt,
gte
};
enum class unop {
lnot
};
struct expr {
virtual ~expr() = default;
};
typedef std::unique_ptr<expr> expr_ptr;
struct expr_binop : expr {
binop op;
expr_ptr left;
expr_ptr right;
expr_binop(binop nop, expr_ptr l, expr_ptr r) :
op(nop), left(std::move(l)), right(std::move(r)) {}
};
struct expr_unop : expr {
unop op;
expr_ptr child;
expr_unop(unop nop, expr_ptr c) :
op(nop), child(std::move(c)) {}
};
struct expr_assign : expr {
std::string var;
expr_ptr child;
expr_assign(std::string v, expr_ptr c) :
var(std::move(v)), child(std::move(c)) {}
};
template <typename T, typename ... Ts>
expr_ptr make_expr(Ts&& ... ts) {
return expr_ptr(new T(std::move(ts)...));
}
struct stmt {
virtual ~stmt() = default;
};
typedef std::unique_ptr<stmt> stmt_ptr;
struct stmt_block : stmt {
std::vector<stmt_ptr> children;
};
struct stmt_if : stmt {
expr_ptr cond;
stmt_ptr then;
stmt_ptr els;
stmt_if(expr_ptr c, stmt_ptr t, stmt_ptr e = nullptr) :
cond(std::move(c)), then(std::move(t)), els(std::move(e)) {}
};
struct stmt_while : stmt {
expr_ptr cond;
stmt_ptr body;
stmt_while(expr_ptr c, stmt_ptr b)
: cond(std::move(c)), body(std::move(b)) {}
};
struct stmt_break : stmt {
};
template <typename T, typename ... Ts>
stmt_ptr make_stmt(Ts&& ... ts) {
return stmt_ptr(new T(std::move(ts)...));
}
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