387 lines
9.1 KiB
Plaintext
387 lines
9.1 KiB
Plaintext
(*
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Copyright 2021 Anton Krotov
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This file is part of CEdit.
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CEdit is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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CEdit is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with CEdit. If not, see <http://www.gnu.org/licenses/>.
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*)
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MODULE Languages;
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IMPORT Lines;
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CONST
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langNone* = 0; langC* = 1; langOberon* = 2; langPascal* = 3;
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langFasm* = 4; langLua* = 5; langIni* = 6;
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csLang = {langC, langOberon, langLua, langIni};
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TYPE
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tLine = Lines.tLine;
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tKeyWords = RECORD
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words: ARRAY 200, 32 OF WCHAR; cnt: INTEGER
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END;
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procGetStr = PROCEDURE (secName, keyName: ARRAY OF CHAR; VAR s: ARRAY OF CHAR);
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VAR
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oberonKW, cKW, pascalKW, luaKW, iniKW, fasmKW: ARRAY 3 OF tKeyWords;
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PROCEDURE isCS* (lang: INTEGER): BOOLEAN;
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RETURN lang IN csLang
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END isCS;
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PROCEDURE checkKW (s: ARRAY OF WCHAR; KW: tKeyWords): BOOLEAN;
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VAR
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i: INTEGER;
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BEGIN
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i := KW.cnt - 1;
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WHILE (i >= 0) & (s # KW.words[i]) DO
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DEC(i)
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END
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RETURN i >= 0
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END checkKW;
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PROCEDURE isKey* (s: ARRAY OF WCHAR; lang, kwSet: INTEGER): BOOLEAN;
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VAR
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res: BOOLEAN;
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BEGIN
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res := FALSE;
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CASE lang OF
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|langC: res := checkKW(s, cKW[kwSet - 1])
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|langOberon: res := checkKW(s, oberonKW[kwSet - 1])
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|langPascal: res := checkKW(s, pascalKW[kwSet - 1])
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|langLua: res := checkKW(s, luaKW[kwSet - 1])
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|langIni: res := checkKW(s, iniKW[kwSet - 1])
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|langFasm: res := checkKW(s, fasmKW[kwSet - 1])
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END
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RETURN res
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END isKey;
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PROCEDURE SkipString* (line: tLine; VAR pos: INTEGER; n: INTEGER);
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VAR
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quot: WCHAR;
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BEGIN
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quot := Lines.getChar(line, pos);
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REPEAT
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INC(pos)
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UNTIL (pos > n) OR (Lines.getChar(line, pos) = quot)
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END SkipString;
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PROCEDURE C (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);
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VAR
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c: WCHAR;
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BEGIN
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c := Lines.getChar(line, pos);
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IF depth = 0 THEN
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IF c = "/" THEN
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IF cond = 0 THEN
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cond := 1
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ELSE
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cond := 0;
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pos := n
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END
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ELSIF (c = "*") & (cond = 1) THEN
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depth := 1;
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cond := 0
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ELSIF (c = "'") OR (c = '"') THEN
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SkipString(line, pos, n);
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cond := 0
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ELSE
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cond := 0
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END
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ELSIF depth = 1 THEN
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IF c = "*" THEN
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cond := 1
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ELSIF (c = "/") & (cond = 1) THEN
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cond := 0;
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depth := 0
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ELSE
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cond := 0
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END
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END
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END C;
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PROCEDURE getChar (line: tLine; i: INTEGER): WCHAR;
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VAR
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res: WCHAR;
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BEGIN
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IF i >= line.length THEN
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res := 0X
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ELSE
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res := Lines.getChar(line, i)
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END
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RETURN res
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END getChar;
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PROCEDURE LuaLong* (line: tLine; pos: INTEGER): INTEGER;
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VAR
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res: INTEGER;
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BEGIN
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res := -1;
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IF getChar(line, pos) = "[" THEN
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INC(pos);
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WHILE getChar(line, pos) = "=" DO
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INC(res);
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INC(pos)
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END;
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IF getChar(line, pos) = "[" THEN
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INC(res)
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ELSE
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res := -1
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END
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END
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RETURN res
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END LuaLong;
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PROCEDURE Lua (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);
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VAR
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c: WCHAR;
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k: INTEGER;
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BEGIN
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c := Lines.getChar(line, pos);
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IF depth = 0 THEN
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IF c = "-" THEN
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IF cond = 0 THEN
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cond := 1
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ELSE
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cond := 0;
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k := LuaLong(line, pos + 1);
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IF k >= 0 THEN
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depth := k*2 + 1
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ELSE
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pos := n
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END
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END
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ELSIF c = "[" THEN
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cond := 0;
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k := LuaLong(line, pos);
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IF k >= 0 THEN
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depth := (k + 1)*2
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END
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ELSIF (c = "'") OR (c = '"') THEN
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SkipString(line, pos, n);
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cond := 0
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ELSE
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cond := 0
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END
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ELSIF depth > 0 THEN
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IF (cond = 0) & (c = "]") THEN
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cond := 1
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ELSIF (cond >= 1) & (c = "=") THEN
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INC(cond)
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ELSIF (cond >= 1) & (c = "]") & (cond*2 - depth MOD 2 = depth) THEN
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depth := 0;
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cond := 0
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ELSE
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cond := 0
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END
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END
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END Lua;
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PROCEDURE Pascal (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);
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VAR
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c: WCHAR;
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BEGIN
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c := Lines.getChar(line, pos);
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IF depth = 0 THEN
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IF c = "(" THEN
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cond := 1
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ELSIF c = "/" THEN
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IF cond = 2 THEN
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cond := 0;
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pos := n
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ELSE
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cond := 2
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END
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ELSIF (c = "*") & (cond = 1) THEN
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depth := 2;
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cond := 0
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ELSIF c = "'" THEN
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SkipString(line, pos, n);
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cond := 0
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ELSIF c = "{" THEN
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IF Lines.getChar(line, pos + 1) = "$" THEN
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depth := 3
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ELSE
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depth := 1
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END;
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cond := 0
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ELSE
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cond := 0
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END
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ELSIF depth IN {1, 3} THEN
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IF c = "}" THEN
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depth := 0
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END
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ELSIF depth = 2 THEN
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IF c = "*" THEN
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cond := 1
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ELSIF (c = ")") & (cond = 1) THEN
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depth := 0;
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cond := 0
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ELSE
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cond := 0
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END
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END
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END Pascal;
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PROCEDURE Oberon (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);
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VAR
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c: WCHAR;
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BEGIN
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c := Lines.getChar(line, pos);
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IF (depth = 0) & (c = "/") THEN
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IF cond = 3 THEN
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cond := 0;
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pos := n
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ELSE
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cond := 3
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END
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ELSIF (depth = 0) & ((c = "'") OR (c = '"')) THEN
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SkipString(line, pos, n);
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cond := 0
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ELSIF c = "(" THEN
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cond := 1
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ELSIF c = "*" THEN
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IF cond = 1 THEN
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INC(depth);
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cond := 0
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ELSE
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cond := 2
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END
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ELSIF c = ")" THEN
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IF cond = 2 THEN
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IF depth > 0 THEN
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DEC(depth)
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END
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END;
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cond := 0
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ELSE
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cond := 0
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END;
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END Oberon;
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PROCEDURE Ini (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER);
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VAR
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c: WCHAR;
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BEGIN
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cond := 0;
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c := Lines.getChar(line, pos);
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IF depth = 0 THEN
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IF c = ";" THEN
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pos := n
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ELSIF c = '"' THEN
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SkipString(line, pos, n)
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ELSIF c = "[" THEN
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depth := 1
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END
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ELSIF depth = 1 THEN
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IF c = "]" THEN
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depth := 0
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END
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END
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END Ini;
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PROCEDURE comments* (line: tLine; VAR depth, cond, pos: INTEGER; n: INTEGER; lang: INTEGER);
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BEGIN
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CASE lang OF
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|langNone:
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|langFasm:
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|langC: C(line, depth, cond, pos, n)
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|langOberon: Oberon(line, depth, cond, pos, n)
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|langPascal: Pascal(line, depth, cond, pos, n)
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|langLua: Lua(line, depth, cond, pos, n)
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|langIni: Ini(line, depth, cond, pos, n)
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END
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END comments;
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PROCEDURE EnterKW (s: ARRAY OF CHAR; VAR KW: tKeyWords; CPrep: BOOLEAN);
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CONST
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SPACE = 20X; CR = 0DX; LF = 0AX; TAB = 9X; COMMA = ",";
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VAR
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i, j, k: INTEGER;
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PROCEDURE delim (c: CHAR): BOOLEAN;
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RETURN (c = COMMA) OR (c = SPACE) OR (c = CR) OR (c = LF) OR (c = TAB)
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END delim;
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BEGIN
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k := KW.cnt;
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i := 0;
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REPEAT
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KW.words[k, 0] := "#";
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j := ORD(CPrep);
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WHILE (s[i] # 0X) & ~delim(s[i]) DO
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KW.words[k, j] := WCHR(ORD(s[i]));
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INC(i);
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INC(j)
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END;
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KW.words[k, j] := 0X;
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INC(k);
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WHILE delim(s[i]) DO
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INC(i)
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END
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UNTIL s[i] = 0X;
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KW.cnt := k
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END EnterKW;
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PROCEDURE loadKW (VAR KW: ARRAY OF tKeyWords; getStr: procGetStr; lang: ARRAY OF CHAR);
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VAR
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s: ARRAY 16*1024 OF CHAR;
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key: ARRAY 4 OF CHAR;
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i: INTEGER;
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BEGIN
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key := "KW1";
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FOR i := 0 TO 2 DO
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KW[i].cnt := 0;
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key[2] := CHR(ORD("1") + i);
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getStr(lang, key, s);
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EnterKW(s, KW[i], (lang = "lang_C") & (i = 1))
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END
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END loadKW;
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PROCEDURE init* (getStr: procGetStr);
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BEGIN
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loadKW(oberonKW, getStr, "lang_Oberon");
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loadKW(cKW, getStr, "lang_C");
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loadKW(pascalKW, getStr, "lang_Pascal");
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loadKW(luaKW, getStr, "lang_Lua");
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loadKW(iniKW, getStr, "lang_Ini");
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loadKW(fasmKW, getStr, "lang_Fasm");
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END init;
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END Languages. |