Preprocessor.hpp

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#ifndef LLVMEXPR_FRONTEND_INFIX2POSTFIX_PREPROCESSOR_HPP
#define LLVMEXPR_FRONTEND_INFIX2POSTFIX_PREPROCESSOR_HPP
 
#include <memory>
#include <stdexcept>
#include <string>
#include <vector>
 
namespace infix2postfix {
 
class PreprocessorError : public std::runtime_error {
  public:
    using std::runtime_error::runtime_error;
};
 
struct MacroExpansion {
    std::string macro_name;
    int original_line;
    int original_column;
    std::string replacement_text;
    int preprocessed_start_column;
    int preprocessed_end_column;
};
 
struct LineMapping {
    int preprocessed_line;
    int original_line;
    std::vector<MacroExpansion> expansions;
};
 
struct MacroDefinition {
    std::string name;
    std::string body;
    bool is_function_like = false;
    std::vector<std::string> parameters;
};
 
struct PreprocessResult {
    std::string source;
    std::vector<LineMapping> line_map;
    std::vector<std::string> errors;
    bool success;
    int library_line_count = 0;
};
 
class Preprocessor {
  public:
    explicit Preprocessor(std::string source);
    ~Preprocessor();
 
    Preprocessor(const Preprocessor&) = delete;
    Preprocessor& operator=(const Preprocessor&) = delete;
    Preprocessor(Preprocessor&&) = delete;
    Preprocessor& operator=(Preprocessor&&) = delete;
 
    void addPredefinedMacro(std::string name, const std::string& value = "");
 
    PreprocessResult process();
 
    static std::string
    formatDiagnosticWithExpansion(const std::string& message, int line,
                                  const std::vector<LineMapping>& line_map);
 
    static std::string
    formatMacroExpansions(const std::vector<LineMapping>& line_map);
 
  private:
    class Impl;
    std::unique_ptr<Impl> impl;
};
 
} // namespace infix2postfix
 
#endif // LLVMEXPR_FRONTEND_INFIX2POSTFIX_PREPROCESSOR_HPP