#include "Parser.h"
#include "antlr4-runtime.h"


Parser::Parser(const std::string &input_string)
    : InputStream(std::make_unique<antlr4::ANTLRInputStream>(input_string))
    , CaseFilter(InputStream.get(), true)
    , Lexer(&CaseFilter)
    , TokenStream(&Lexer)
    , AParser(&TokenStream)
{
    AParser.removeErrorListeners();
    AParser.addErrorListener(&Errors);
}

std::unique_ptr<sqlast::StatementList> Parser::Parse()
{
    auto context = AParser.main();
    return std::move(context->program);
}