(*
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 <http://www.gnu.org/licenses/>.
*)
MODULE Languages;
IMPORT Lines;
CONST
langNone* = 0; langC* = 1; langOberon* = 2; langPascal* = 3;
langFasm* = 4; langLua* = 5; langIni* = 6;
csLang = {langNone, 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.