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main.cpp
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main.cpp
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#include "lexer.h"
#include "parse.h"
#include "runtime.h"
#include "statement.h"
#include "test_runner_p.h"
#include <fstream>
#include <iostream>
using namespace std;
namespace parse {
void RunOpenLexerTests(TestRunner& tr);
} // namespace parse
namespace ast {
void RunUnitTests(TestRunner& tr);
} // namespace ast
namespace runtime {
void RunObjectHolderTests(TestRunner& tr);
void RunObjectsTests(TestRunner& tr);
} // namespace runtime
void TestParseProgram(TestRunner& tr);
namespace {
void RunMythonProgram(istream& input, ostream& output) {
parse::Lexer lexer(input);
auto program = ParseProgram(lexer);
runtime::SimpleContext context{ output };
runtime::Closure closure;
program->Execute(closure, context);
}
void TestSimplePrints() {
istringstream input(R"(
print 57
print 10, 24, -8
print 'hello'
print "world"
print True, False
print
print None
)");
ostringstream output;
RunMythonProgram(input, output);
ASSERT_EQUAL(output.str(), "57\n10 24 -8\nhello\nworld\nTrue False\n\nNone\n");
}
void TestAssignments() {
istringstream input(R"(
x = 57
print x
x = 'C++ black belt'
print x
y = False
x = y
print x
x = None
print x, y
)");
ostringstream output;
RunMythonProgram(input, output);
ASSERT_EQUAL(output.str(), "57\nC++ black belt\nFalse\nNone False\n");
}
void TestArithmetics() {
istringstream input("print 1+2+3+4+5, 1*2*3*4*5, 1-2-3-4-5, 36/4/3, 2*5+10/2");
ostringstream output;
RunMythonProgram(input, output);
ASSERT_EQUAL(output.str(), "15 120 -13 3 15\n");
}
void TestVariablesArePointers() {
istringstream input(R"(
class Counter:
def __init__():
self.value = 0
def add():
self.value = self.value + 1
class Dummy:
def do_add(counter):
counter.add()
x = Counter()
y = x
x.add()
y.add()
print x.value
d = Dummy()
d.do_add(x)
print y.value
)");
ostringstream output;
RunMythonProgram(input, output);
ASSERT_EQUAL(output.str(), "2\n3\n");
}
void TestAll() {
TestRunner tr;
parse::RunOpenLexerTests(tr);
runtime::RunObjectHolderTests(tr);
runtime::RunObjectsTests(tr);
ast::RunUnitTests(tr);
TestParseProgram(tr);
RUN_TEST(tr, TestSimplePrints);
RUN_TEST(tr, TestAssignments);
RUN_TEST(tr, TestArithmetics);
RUN_TEST(tr, TestVariablesArePointers);
}
} // namespace
int main() {
try {
//TestAll();
string filename = "../test.txt"s;
ifstream in(filename);
if (!in.is_open())
{
cout << "There is no file!" << endl;;
return 0;
}
RunMythonProgram(in, cout);
}
catch (const std::exception& e) {
std::cerr << e.what() << std::endl;
return 1;
}
return 0;
}