(*
    BSD 2-Clause License

    Copyright (c) 2018-2020, Anton Krotov
    All rights reserved.
*)

MODULE Compiler;

IMPORT ST := STATEMENTS, PARS, UTILS, PATHS, PROG, C := CONSOLE,
       ERRORS, STRINGS, WRITER, MSP430, THUMB, TARGETS, SCAN;


PROCEDURE keys (VAR options: PROG.OPTIONS; VAR out: PARS.PATH);
VAR
    param: PARS.PATH;
    i, j:  INTEGER;
    _end:  BOOLEAN;
    value: INTEGER;
    minor,
    major: INTEGER;
    checking: SET;

BEGIN
    out := "";
    checking := options.checking;
    _end := FALSE;
    i := 3;
    REPEAT
        UTILS.GetArg(i, param);

        IF param = "-stk" THEN
            INC(i);
            UTILS.GetArg(i, param);
            IF STRINGS.StrToInt(param, value) & (1 <= value) & (value <= 32) THEN
                options.stack := value
            END;
            IF param[0] = "-" THEN
                DEC(i)
            END

        ELSIF param = "-out" THEN
            INC(i);
            UTILS.GetArg(i, param);
            IF param[0] = "-" THEN
                DEC(i)
            ELSE
                out := param
            END

        ELSIF param = "-ram" THEN
            INC(i);
            UTILS.GetArg(i, param);
            IF STRINGS.StrToInt(param, value) THEN
                options.ram := value
            END;
            IF param[0] = "-" THEN
                DEC(i)
            END

        ELSIF param = "-rom" THEN
            INC(i);
            UTILS.GetArg(i, param);
            IF STRINGS.StrToInt(param, value) THEN
                options.rom := value
            END;
            IF param[0] = "-" THEN
                DEC(i)
            END

        ELSIF param = "-nochk" THEN
            INC(i);
            UTILS.GetArg(i, param);

            IF param[0] = "-" THEN
                DEC(i)
            ELSE
                j := 0;
                WHILE param[j] # 0X DO

                    IF    param[j] = "p" THEN
                        EXCL(checking, ST.chkPTR)
                    ELSIF param[j] = "t" THEN
                        EXCL(checking, ST.chkGUARD)
                    ELSIF param[j] = "i" THEN
                        EXCL(checking, ST.chkIDX)
                    ELSIF param[j] = "b" THEN
                        EXCL(checking, ST.chkBYTE)
                    ELSIF param[j] = "c" THEN
                        EXCL(checking, ST.chkCHR)
                    ELSIF param[j] = "w" THEN
                        EXCL(checking, ST.chkWCHR)
                    ELSIF param[j] = "r" THEN
                        EXCL(checking, ST.chkCHR);
                        EXCL(checking, ST.chkWCHR);
                        EXCL(checking, ST.chkBYTE)
                    ELSIF param[j] = "a" THEN
                        checking := {}
                    END;

                    INC(j)
                END;

            END

        ELSIF param = "-ver" THEN
            INC(i);
            UTILS.GetArg(i, param);
            IF STRINGS.StrToVer(param, major, minor) THEN
                options.version := major * 65536 + minor
            END;
            IF param[0] = "-" THEN
                DEC(i)
            END

        ELSIF param = "-lower" THEN
            options.lower := TRUE

        ELSIF param = "-pic" THEN
            options.pic := TRUE

        ELSIF param = "-def" THEN
            INC(i);
            UTILS.GetArg(i, param);
            SCAN.NewDef(param)

        ELSIF param = "" THEN
            _end := TRUE

        ELSE
            ERRORS.BadParam(param)
        END;

        INC(i)
    UNTIL _end;

    options.checking := checking
END keys;


PROCEDURE OutTargetItem (target: INTEGER; text: ARRAY OF CHAR);
VAR
    width: INTEGER;

BEGIN
    width := 15;
    width := width - LENGTH(TARGETS.Targets[target].ComLinePar) - 4;
    C.String("  '"); C.String(TARGETS.Targets[target].ComLinePar); C.String("'");
    WHILE width > 0 DO
        C.String(20X);
        DEC(width)
    END;
    C.StringLn(text)
END OutTargetItem;


PROCEDURE main;
VAR
    path:       PARS.PATH;
    inname:     PARS.PATH;
    ext:        PARS.PATH;
    app_path:   PARS.PATH;
    lib_path:   PARS.PATH;
    modname:    PARS.PATH;
    outname:    PARS.PATH;
    param:      PARS.PATH;
    temp:       PARS.PATH;
    target:     INTEGER;
    time:       INTEGER;
    options:    PROG.OPTIONS;

BEGIN
    options.stack := 2;
    options.version := 65536;
    options.pic := FALSE;
    options.lower := FALSE;
    options.checking := ST.chkALL;

    PATHS.GetCurrentDirectory(app_path);
    lib_path := app_path;

    UTILS.GetArg(1, inname);

    C.Ln;
    C.String("Akron Oberon Compiler v"); C.Int(UTILS.vMajor); C.String("."); C.Int2(UTILS.vMinor);
        C.String(" ("); C.Int(UTILS.bit_depth); C.StringLn("-bit)");
    C.StringLn("Copyright (c) 2018-2020, Anton Krotov");

    IF inname = "" THEN
        C.Ln;
        C.StringLn("Usage: Compiler <main module> <target> [optional settings]"); C.Ln;
        C.StringLn("target =");
        IF UTILS.bit_depth = 64 THEN
            OutTargetItem(TARGETS.Win64C, "Windows64 Console");
            OutTargetItem(TARGETS.Win64GUI, "Windows64 GUI");
            OutTargetItem(TARGETS.Win64DLL, "Windows64 DLL");
            OutTargetItem(TARGETS.Linux64, "Linux64 Exec");
            OutTargetItem(TARGETS.Linux64SO, "Linux64 SO")
        END;
        OutTargetItem(TARGETS.Win32C, "Windows32 Console");
        OutTargetItem(TARGETS.Win32GUI, "Windows32 GUI");
        OutTargetItem(TARGETS.Win32DLL, "Windows32 DLL");
        OutTargetItem(TARGETS.Linux32, "Linux32 Exec");
        OutTargetItem(TARGETS.Linux32SO, "Linux32 SO");
        OutTargetItem(TARGETS.KolibriOS, "KolibriOS Exec");
        OutTargetItem(TARGETS.KolibriOSDLL, "KolibriOS DLL");
        OutTargetItem(TARGETS.MSP430, "MSP430x{1,2}xx microcontrollers");
        OutTargetItem(TARGETS.STM32CM3, "STM32 Cortex-M3 microcontrollers");
        C.Ln;
        C.StringLn("optional settings:"); C.Ln;
        C.StringLn("  -out <file name>      output"); C.Ln;
        C.StringLn("  -stk <size>           set size of stack in Mbytes (Windows, Linux, KolibriOS)"); C.Ln;
        C.StringLn("  -nochk <'ptibcwra'>   disable runtime checking (pointers, types, indexes,");
        C.StringLn("                        BYTE, CHR, WCHR)"); C.Ln;
        C.StringLn("  -lower                allow lower case for keywords"); C.Ln;
        C.StringLn("  -def <identifier>     define conditional compilation symbol"); C.Ln;
        C.StringLn("  -ver <major.minor>    set version of program (KolibriOS DLL)"); C.Ln;
        C.StringLn("  -ram <size>           set size of RAM in bytes (MSP430) or Kbytes (STM32)"); C.Ln;
        C.StringLn("  -rom <size>           set size of ROM in bytes (MSP430) or Kbytes (STM32)"); C.Ln;
        UTILS.Exit(0)
    END;

    C.StringLn("--------------------------------------------");
    PATHS.split(inname, path, modname, ext);

    IF ext # UTILS.FILE_EXT THEN
        ERRORS.Error(207)
    END;

    IF PATHS.isRelative(path) THEN
        PATHS.RelPath(app_path, path, temp);
        path := temp
    END;

    UTILS.GetArg(2, param);
    IF param = "" THEN
        ERRORS.Error(205)
    END;

    SCAN.NewDef(param);

    IF TARGETS.Select(param) THEN
        target := TARGETS.target
    ELSE
        ERRORS.Error(206)
    END;

    IF target = TARGETS.MSP430 THEN
        options.ram := MSP430.minRAM;
        options.rom := MSP430.minROM
    END;

    IF target = TARGETS.STM32CM3 THEN
        options.ram := THUMB.STM32_minRAM;
        options.rom := THUMB.STM32_minROM
    END;

    IF UTILS.bit_depth < TARGETS.BitDepth THEN
        ERRORS.Error(206)
    END;

    STRINGS.append(lib_path, "lib");
    STRINGS.append(lib_path, UTILS.slash);
    STRINGS.append(lib_path, TARGETS.LibDir);
    STRINGS.append(lib_path, UTILS.slash);

    keys(options, outname);
    IF outname = "" THEN
        outname := path;
        STRINGS.append(outname, modname);
        STRINGS.append(outname, TARGETS.FileExt)
    ELSE
        IF PATHS.isRelative(outname) THEN
            PATHS.RelPath(app_path, outname, temp);
            outname := temp
        END
    END;

    PARS.init(options);

    ST.compile(path, lib_path, modname, outname, target, options);

    time := UTILS.GetTickCount() - UTILS.time;
    C.StringLn("--------------------------------------------");
    C.Int(PARS.lines); C.String(" lines, ");
    C.Int(time DIV 100); C.String("."); C.Int2(time MOD 100); C.String(" sec, ");
    C.Int(WRITER.counter); C.StringLn(" bytes");

    UTILS.Exit(0)
END main;


BEGIN
    main
END Compiler.