Parser.hpp

#pragma once
 
#include "Expression.hpp"
 
namespace wmtk::components::image_simulation::expression_parser {
 
class Parser
{
public:
    explicit Parser(const std::string& input, const std::map<std::string, int64_t>& tag_name_to_id)
        : m_input(input)
        , m_tag_name_to_id(tag_name_to_id)
    {}
 
    ExpressionPtr parse();
 
    ExpressionPtr parseOr();
 
    ExpressionPtr parseAnd();
 
    ExpressionPtr parseUnary();
 
    ExpressionPtr parsePrimary();
 
    std::string parseIdentifier();
 
    bool match(char c);
 
    void skipWhitespace();
 
private:
    std::string m_input; // The input string to parse.
    size_t m_pos = 0; // Current position in the input string.
 
    std::map<std::string, int64_t> m_tag_name_to_id;
};
 
ExpressionPtr parse(const std::string& input, const std::map<std::string, int64_t>& tag_name_to_id);
 
} // namespace wmtk::components::image_simulation::expression_parser