#include <catch2/catch.hpp>
#include "../lib/Lexer.hpp"
#include "../lib/Parser.hpp"
#include "lib/SrcLoc.hpp"
#include "lib/StatusLog.hpp"

class ParserTest
{
public:
  explicit ParserTest() {}
  virtual ~ParserTest() {}

  void test_node(std::string const& oracle, std::string const& source)
  {
    roza::SrcLoc loc {"parser_tests"};
    roza::StatusLog log;
    roza::Lexer lexer {log, loc};
    roza::Parser parser {lexer, log};

    lexer.scan(source);
    auto node = parser.parse();

    REQUIRE(oracle == node->string());
  }

  void test_node_err(std::string const& oracle)
  {
    roza::SrcLoc loc {"parser_tests"};
    roza::StatusLog log;
    roza::Lexer lexer {log, loc};
    roza::Parser parser {lexer, log};

    lexer.scan(oracle);
    REQUIRE_THROWS(parser.parse());
  }

protected:
};

TEST_CASE_METHOD(ParserTest, "Parser_integers")
{
  test_node("PROG", "");
  test_node("PROG(INSTR(INT[27]))", "27");
  test_node("PROG(INSTR(INT[27]))", "  27  ");

  test_node("PROG(INSTR(INT[27]),"
            "INSTR(INT[9]),"
            "INSTR(INT[-99]))", "27 \n 9 \n -99");

  test_node_err("32 14 -12");
}