FrontEnd.h

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#pragma once
 
#include "ASTProgram.h"
 
#include "antlr4-runtime.h"
 
#include <fstream>
#include <iostream>
 
class LexerErrorListener : public antlr4::BaseErrorListener {
public:
  LexerErrorListener() = default;
 
  virtual void syntaxError(antlr4::Recognizer *recognizer,
                           antlr4::Token *offendingSymbol, size_t line,
                           size_t charPositionInLine, const std::string &msg,
                           std::exception_ptr e) override;
};
 
class ParserErrorListener : public antlr4::BaseErrorListener {
public:
  ParserErrorListener() = default;
 
  virtual void syntaxError(antlr4::Recognizer *recognizer,
                           antlr4::Token *offendingSymbol, size_t line,
                           size_t charPositionInLine, const std::string &msg,
                           std::exception_ptr e) override;
};
 
class FrontEnd {
public:
  static std::shared_ptr<ASTProgram> parse(std::istream &stream);
 
  static void prettyprint(ASTProgram *program, std::ostream &os);
 
  static void astVisualize(std::shared_ptr<ASTNode> node, std::ostream &os);
};