/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#ifndef cmDependsJavaParserHelper_h
#define cmDependsJavaParserHelper_h

#include "cmConfigure.h"  // IWYU pragma: keep

#include <string>
#include <vector>

/** \class cmDependsJavaParserHelper
 * \brief Helper class for parsing java source files
 *
 * Finds dependencies for java file and list of outputs
 */
class cmDependsJavaParserHelper
{
public:
    struct ParserType
    {
        char* str;
    };

    cmDependsJavaParserHelper();
    ~cmDependsJavaParserHelper();

    int ParseString(const char* str, int verb);
    int ParseFile(const char* file);

    // For the lexer:
    void AllocateParserType(cmDependsJavaParserHelper::ParserType* pt,
                            const char* str, int len = 0);

    int  LexInput(char* buf, int maxlen);
    void Error(const char* str);

    // For yacc
    void AddClassFound(const char* sclass);
    void PrepareElement(ParserType* me);
    void DeallocateParserType(char** pt);
    void CheckEmpty(int line, int cnt, ParserType* pt);
    void StartClass(const char* cls);
    void EndClass();
    void AddPackagesImport(const char* sclass);
    void SetCurrentPackage(const char* pkg) { this->CurrentPackage = pkg; }
    const char* GetCurrentPackage() { return this->CurrentPackage.c_str(); }
    void SetCurrentCombine(const char* cmb) { this->CurrentCombine = cmb; }
    const char* GetCurrentCombine() { return this->CurrentCombine.c_str(); }
    void        UpdateCombine(const char* str1, const char* str2);

    std::vector<std::string>& GetClassesFound() { return this->ClassesFound; }

    std::vector<std::string> GetFilesProduced();

private:
    class CurrentClass
    {
    public:
        std::string               Name;
        std::vector<CurrentClass> NestedClasses;
        void AddFileNamesForPrinting(std::vector<std::string>* files,
                                     const char* prefix, const char* sep) const;
    };
    std::string              CurrentPackage;
    std::string::size_type   InputBufferPos;
    std::string              InputBuffer;
    std::vector<char>        OutputBuffer;
    std::vector<std::string> ClassesFound;
    std::vector<std::string> PackagesImport;
    std::string              CurrentCombine;

    std::vector<CurrentClass> ClassStack;

    int CurrentLine;
    int UnionsAvailable;
    int LastClassId;
    int CurrentDepth;
    int Verbose;

    std::vector<char*> Allocates;

    void PrintClasses();

    void Print(const char* place, const char* str);
    void CombineUnions(char** out, const char* in1, char** in2,
                       const char* sep);
    void SafePrintMissing(const char* str, int line, int cnt);

    void CleanupParser();
};

#define YYSTYPE cmDependsJavaParserHelper::ParserType
#define YYSTYPE_IS_DECLARED
#define YY_EXTRA_TYPE cmDependsJavaParserHelper*
#define YY_DECL int cmDependsJava_yylex(YYSTYPE* yylvalp, yyscan_t yyscanner)

#endif
