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Add errors ection to Part 4 of compiler posts

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This commit is contained in:
Danila Fedorin
2019-08-28 15:34:13 -07:00
parent 2dd81cf07a
commit b065d95804
6 changed files with 64 additions and 16 deletions
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30
04/main.cpp
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@@ -1,7 +1,8 @@
#include "ast.hpp"
#include "parser.hpp"
#include "type.hpp"
#include <iostream>
#include "parser.hpp"
#include "error.hpp"
#include "type.hpp"
void yy::parser::error(const std::string& msg) {
std::cout << "An error occured: " << msg << std::endl;
@@ -9,10 +10,9 @@ void yy::parser::error(const std::string& msg) {
extern std::vector<definition_ptr> program;
void typecheck_program(const std::vector<definition_ptr>& prog) {
type_mgr mgr;
type_env env;
void typecheck_program(
const std::vector<definition_ptr>& prog,
type_mgr& mgr, type_env& env) {
type_ptr int_type = type_ptr(new type_base("Int"));
type_ptr binop_type = type_ptr(new type_arr(
int_type,
@@ -40,6 +40,9 @@ void typecheck_program(const std::vector<definition_ptr>& prog) {
int main() {
yy::parser parser;
type_mgr mgr;
type_env env;
parser.parse();
for(auto& definition : program) {
definition_defn* def = dynamic_cast<definition_defn*>(definition.get());
@@ -51,6 +54,17 @@ int main() {
def->body->print(1, std::cout);
}
typecheck_program(program);
std::cout << program.size() << std::endl;
try {
typecheck_program(program, mgr, env);
} catch(unification_error& err) {
std::cout << "failed to unify types: " << std::endl;
std::cout << " (1) \033[34m";
err.left->print(mgr, std::cout);
std::cout << "\033[0m" << std::endl;
std::cout << " (2) \033[32m";
err.right->print(mgr, std::cout);
std::cout << "\033[0m" << std::endl;
} catch(type_error& err) {
std::cout << "failed to type check program: " << err.description << std::endl;
}
}