Subversion Repositories Kolibri OS

(*

    Copyright 2021 Anton Krotov

    This file is part of CEdit.

    CEdit is free software: you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by

    the Free Software Foundation, either version 3 of the License, or

    (at your option) any later version.

    CEdit is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License

    along with CEdit. If not, see .

*)

MODULE Languages;

IMPORT Lines;

CONST

    langNone* = 0; langC* = 1; langOberon* = 2; langPascal* = 3;

    langFasm* = 4; langLua* = 5; langIni* = 6;

    csLang = {langC, langOberon, langLua, langIni};

TYPE

    tLine = Lines.tLine;

    tKeyWords = RECORD

        words: ARRAY 200, 32 OF WCHAR; cnt: INTEGER

    END;

    procGetStr = PROCEDURE (secName, keyName: ARRAY OF CHAR; VAR s: ARRAY OF CHAR);

VAR

    oberonKW, cKW, pascalKW, luaKW, iniKW, fasmKW: ARRAY 3 OF tKeyWords;

PROCEDURE isCS* (lang: INTEGER): BOOLEAN;

    RETURN lang IN csLang

END isCS;

PROCEDURE checkKW (s: ARRAY OF WCHAR; KW: tKeyWords): BOOLEAN;

VAR

    i: INTEGER;

BEGIN

    i := KW.cnt - 1;

    WHILE (i >= 0) & (s # KW.words[i]) DO

        DEC(i)

    END

    RETURN i >= 0

END checkKW;

PROCEDURE isKey* (s: ARRAY OF WCHAR; lang, kwSet: INTEGER): BOOLEAN;

VAR

    res: BOOLEAN;

BEGIN

    res := FALSE;

    CASE lang OF

    |langC:      res := checkKW(s, cKW[kwSet - 1])

    |langOberon: res := checkKW(s, oberonKW[kwSet - 1])

    |langPascal: res := checkKW(s, pascalKW[kwSet - 1])

    |langLua:    res := checkKW(s, luaKW[kwSet - 1])

    |langIni:    res := checkKW(s, iniKW[kwSet - 1])

    |langFasm:   res := checkKW(s, fasmKW[kwSet - 1])

    END

    RETURN res

END isKey;

PROCEDURE SkipString* (line: tLine; VAR pos: INTEGER; n: INTEGER);

VAR

    quot: WCHAR;

BEGIN

    quot := Lines.getChar(line, pos);

    REPEAT

        INC(pos)

    UNTIL (pos > n) OR (Lines.getChar(line, pos) = quot)

END SkipString;

PROCEDURE C (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);

VAR

    c: WCHAR;

BEGIN

    c := Lines.getChar(line, pos);

    IF depth = 0 THEN

        IF c = "/" THEN

            IF cond = 0 THEN

                cond := 1

            ELSE

                cond := 0;

                pos := n

            END

        ELSIF (c = "*") & (cond = 1) THEN

            depth := 1;

            cond := 0

        ELSIF (c = "'") OR (c = '"') THEN

            SkipString(line, pos, n);

            cond := 0

        ELSE

            cond := 0

        END

    ELSIF depth = 1 THEN

        IF c = "*" THEN

            cond := 1

        ELSIF (c = "/") & (cond = 1) THEN

            cond := 0;

            depth := 0

        ELSE

            cond := 0

        END

    END

END C;

PROCEDURE getChar (line: tLine; i: INTEGER): WCHAR;

VAR

    res: WCHAR;

BEGIN

    IF i >= line.length THEN

        res := 0X

    ELSE

        res := Lines.getChar(line, i)

    END

    RETURN res

END getChar;

PROCEDURE LuaLong* (line: tLine; pos: INTEGER): INTEGER;

VAR

    res: INTEGER;

BEGIN

    res := -1;

    IF getChar(line, pos) = "[" THEN

        INC(pos);

        WHILE getChar(line, pos) = "=" DO

            INC(res);

            INC(pos)

        END;

        IF getChar(line, pos) = "[" THEN

            INC(res)

        ELSE

            res := -1

        END

    END

    RETURN res

END LuaLong;

PROCEDURE Lua (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);

VAR

    c: WCHAR;

    k: INTEGER;

BEGIN

    c := Lines.getChar(line, pos);

    IF depth = 0 THEN

        IF c = "-" THEN

            IF cond = 0 THEN

                cond := 1

            ELSE

                cond := 0;

                k := LuaLong(line, pos + 1);

                IF k >= 0 THEN

                    depth := k*2 + 1

                ELSE

                    pos := n

                END

            END

        ELSIF c = "[" THEN

            cond := 0;

            k := LuaLong(line, pos);

            IF k >= 0 THEN

                depth := (k + 1)*2

            END

        ELSIF (c = "'") OR (c = '"') THEN

            SkipString(line, pos, n);

            cond := 0

        ELSE

            cond := 0

        END

    ELSIF depth > 0 THEN

        IF (cond = 0) & (c = "]") THEN

            cond := 1

        ELSIF (cond >= 1) & (c = "=") THEN

            INC(cond)

        ELSIF (cond >= 1) & (c = "]") & (cond*2 - depth MOD 2 = depth) THEN

            depth := 0;

            cond := 0

        ELSE

            cond := 0

        END

    END

END Lua;

PROCEDURE Pascal (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);

VAR

    c: WCHAR;

BEGIN

    c := Lines.getChar(line, pos);

    IF depth = 0 THEN

        IF c = "(" THEN

            cond := 1

        ELSIF c = "/" THEN

            IF cond = 2 THEN

                cond := 0;

                pos := n

            ELSE

                cond := 2

            END

        ELSIF (c = "*") & (cond = 1) THEN

            depth := 2;

            cond := 0

        ELSIF c = "'" THEN

            SkipString(line, pos, n);

            cond := 0

        ELSIF c = "{" THEN

            IF Lines.getChar(line, pos + 1) = "$" THEN

                depth := 3

            ELSE

                depth := 1

            END;

            cond := 0

        ELSE

            cond := 0

        END

    ELSIF depth IN {1, 3} THEN

        IF c = "}" THEN

            depth := 0

        END

    ELSIF depth = 2 THEN

        IF c = "*" THEN

            cond := 1

        ELSIF (c = ")") & (cond = 1) THEN

            depth := 0;

            cond := 0

        ELSE

            cond := 0

        END

    END

END Pascal;

PROCEDURE Oberon (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);

VAR

    c: WCHAR;

BEGIN

    c := Lines.getChar(line, pos);

    IF (depth = 0) & (c = "/") THEN

        IF cond = 3 THEN

            cond := 0;

            pos := n

        ELSE

            cond := 3

        END

    ELSIF (depth = 0) & ((c = "'") OR (c = '"')) THEN

        SkipString(line, pos, n);

        cond := 0

    ELSIF c = "(" THEN

        cond := 1

    ELSIF c = "*" THEN

        IF cond = 1 THEN

            INC(depth);

            cond := 0

        ELSE

            cond := 2

        END

    ELSIF c = ")" THEN

        IF cond = 2 THEN

            IF depth > 0 THEN

                DEC(depth)

            END

        END;

        cond := 0

    ELSE

        cond := 0

    END;

END Oberon;

PROCEDURE Ini (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);

VAR

    c: WCHAR;

BEGIN

    cond := 0;

    c := Lines.getChar(line, pos);

    IF depth = 0 THEN

        IF c = ";" THEN

            pos := n

        ELSIF c = '"' THEN

            SkipString(line, pos, n)

        ELSIF c = "[" THEN

            depth := 1

        END

    ELSIF depth = 1 THEN

        IF c = "]" THEN

            depth := 0

        END

    END

END Ini;

PROCEDURE comments* (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER; lang: INTEGER);

BEGIN

    CASE lang OF

    |langNone:

    |langFasm:

    |langC:       C(line, depth, cond, pos, n)

    |langOberon:  Oberon(line, depth, cond, pos, n)

    |langPascal:  Pascal(line, depth, cond, pos, n)

    |langLua:     Lua(line, depth, cond, pos, n)

    |langIni:     Ini(line, depth, cond, pos, n)

    END

END comments;

PROCEDURE EnterKW (s: ARRAY OF CHAR; VAR KW: tKeyWords; CPrep: BOOLEAN);

CONST

    SPACE = 20X; CR = 0DX; LF = 0AX; TAB = 9X; COMMA = ",";

VAR

    i, j, k: INTEGER;

    PROCEDURE delim (c: CHAR): BOOLEAN;

        RETURN (c = COMMA) OR (c = SPACE) OR (c = CR) OR (c = LF) OR (c = TAB)

    END delim;

BEGIN

    k := KW.cnt;

    i := 0;

    REPEAT

        KW.words[k, 0] := "#";

        j := ORD(CPrep);

        WHILE (s[i] # 0X) & ~delim(s[i]) DO

            KW.words[k, j] := WCHR(ORD(s[i]));

            INC(i);

            INC(j)

        END;

        KW.words[k, j] := 0X;

        INC(k);

        WHILE delim(s[i]) DO

            INC(i)

        END

    UNTIL s[i] = 0X;

    KW.cnt := k

END EnterKW;

PROCEDURE loadKW (VAR KW: ARRAY OF tKeyWords; getStr: procGetStr; lang: ARRAY OF CHAR);

VAR

    s: ARRAY 16*1024 OF CHAR;

    key: ARRAY 4 OF CHAR;

    i: INTEGER;

BEGIN

    key := "KW1";

    FOR i := 0 TO 2 DO

        KW[i].cnt := 0;

        key[2] := CHR(ORD("1") + i);

        getStr(lang, key, s);

        EnterKW(s, KW[i], (lang = "lang_C") & (i = 1))

    END

END loadKW;

PROCEDURE init* (getStr: procGetStr);

BEGIN

    loadKW(oberonKW, getStr, "lang_Oberon");

    loadKW(cKW,      getStr, "lang_C");

    loadKW(pascalKW, getStr, "lang_Pascal");

    loadKW(luaKW,    getStr, "lang_Lua");

    loadKW(iniKW,    getStr, "lang_Ini");

    loadKW(fasmKW,   getStr, "lang_Fasm");

END init;

END Languages.