mirror of
https://github.com/vishapoberon/compiler.git
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adding powerpc target
This commit is contained in:
Norayr Chilingarian
parent
b18729c519
commit
931dae4763
37 changed files with 2846 additions and 4948 deletions
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@ -1,11 +1,11 @@
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MODULE CRX; (* H.Moessenboeck 17.11.93 *)
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MODULE CRX;
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IMPORT Oberon, Texts := CmdlnTexts, Sets, CRS, CRT, SYSTEM;
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IMPORT Oberon, Texts, Sets, CRS, CRT, SYSTEM;
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CONST
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CONST
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symSetSize = 100;
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maxTerm = 3; (* sets of size < maxTerm are enumerated *)
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tErr = 0; altErr = 1; syncErr = 2;
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EOL = 0DX;
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@ -23,7 +23,7 @@ VAR
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PROCEDURE Restriction(n: INTEGER);
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BEGIN
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Texts.WriteLn(w); Texts.WriteString(w, "Restriction ");
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Texts.WriteLn(w); Texts.WriteString(w, "Restriction ");
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Texts.WriteInt(w, n, 0); Texts.WriteLn(w); Texts.Append(Oberon.Log, w.buf);
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HALT(99)
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END Restriction;
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@ -32,7 +32,7 @@ PROCEDURE PutS(s: ARRAY OF CHAR);
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VAR i: INTEGER;
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BEGIN i := 0;
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WHILE (i < LEN(s)) & (s[i] # 0X) DO
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IF s[i] = "$" THEN Texts.WriteLn(syn) ELSE Texts.Write(syn, s[i]) END;
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IF s[i] = "$" THEN Texts.WriteLn(syn) ELSE Texts.Write(syn, s[i]) END ;
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INC(i)
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END
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END PutS;
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@ -52,9 +52,9 @@ BEGIN
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i := 0; first := TRUE;
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WHILE i < Sets.size DO
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IF i IN s THEN
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IF first THEN first := FALSE ELSE Texts.Write(syn, ",") END;
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IF first THEN first := FALSE ELSE Texts.Write(syn, ",") END ;
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PutI(i)
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END;
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END ;
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INC(i)
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END
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END PutSet;
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@ -65,9 +65,9 @@ BEGIN
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i := 0; first := TRUE;
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WHILE i <= CRT.maxT DO
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IF Sets.In(s, i) THEN
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IF first THEN first := FALSE ELSE Texts.Write(syn, ",") END;
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IF first THEN first := FALSE ELSE Texts.Write(syn, ",") END ;
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PutI(i)
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END;
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END ;
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INC(i)
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END
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END PutSet1;
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@ -75,7 +75,7 @@ END PutSet1;
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PROCEDURE Length*(s: ARRAY OF CHAR): INTEGER;
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VAR i: INTEGER;
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BEGIN
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i:=0; WHILE (i < LEN(s)) & (s[i] # 0X) DO INC(i) END;
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i:=0; WHILE (i < LEN(s)) & (s[i] # 0X) DO INC(i) END ;
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RETURN i
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END Length;
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@ -85,7 +85,7 @@ BEGIN
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n := 0;
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WHILE gp > 0 DO
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CRT.GetNode(gp, gn); gp := gn.p2; INC(n)
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END;
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END ;
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RETURN n
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END Alternatives;
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@ -97,7 +97,7 @@ BEGIN
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IF ch = startCh THEN (* check if stopString occurs *)
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i := 0;
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REPEAT
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IF i = high THEN RETURN END; (*stopStr[0..i] found; no unrecognized character*)
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IF i = high THEN RETURN END ; (*stopStr[0..i] found; no unrecognized character*)
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Texts.Read (fram, ch); INC(i);
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UNTIL ch # stopStr[i];
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(*stopStr[0..i-1] found; 1 unrecognized character*)
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@ -107,7 +107,7 @@ BEGIN
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END
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END CopyFramePart;
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PROCEDURE CopySourcePart (pos: CRT.Position; indent: INTEGER);
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PROCEDURE CopySourcePart (pos: CRT.Position; indent: INTEGER);
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(*Copy sequence <position> from <src> to <syn>*)
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VAR ch: CHAR; i: INTEGER; nChars: LONGINT; r: Texts.Reader;
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BEGIN
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@ -118,13 +118,13 @@ BEGIN
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LOOP
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WHILE ch = EOL DO
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Texts.WriteLn(syn); Indent(indent);
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IF nChars > 0 THEN Texts.Read(r, ch); DEC(nChars) ELSE EXIT END;
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IF nChars > 0 THEN Texts.Read(r, ch); DEC(nChars) ELSE EXIT END ;
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i := pos.col;
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WHILE (ch = " ") & (i > 0) DO (* skip blanks at beginning of line *)
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IF nChars > 0 THEN Texts.Read(r, ch); DEC (nChars) ELSE EXIT END;
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IF nChars > 0 THEN Texts.Read(r, ch); DEC (nChars) ELSE EXIT END ;
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DEC(i)
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END
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END;
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END ;
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Texts.Write (syn, ch);
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IF nChars > 0 THEN Texts.Read(r, ch); DEC (nChars) ELSE EXIT END
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END
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@ -135,18 +135,18 @@ BEGIN
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nChars := pos.len; col := pos.col - 1; ch := " ";
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WHILE (nChars > 0) & (ch = " ") DO (*skip leading blanks*)
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Texts.Read(r, ch); DEC(nChars); INC(col)
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END;
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END ;
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Indent(indent);
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LOOP
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WHILE ch = EOL DO
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Texts.WriteLn(syn); Indent(indent);
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IF nChars > 0 THEN Texts.Read(r, ch); DEC(nChars) ELSE EXIT END;
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IF nChars > 0 THEN Texts.Read(r, ch); DEC(nChars) ELSE EXIT END ;
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i := col - 1;
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WHILE (ch = " ") & (i > 0) DO (* skip blanks at beginning of line *)
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IF nChars > 0 THEN Texts.Read(r, ch); DEC (nChars) ELSE EXIT END;
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IF nChars > 0 THEN Texts.Read(r, ch); DEC (nChars) ELSE EXIT END ;
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DEC(i)
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END
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END;
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END ;
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Texts.Write (syn, ch);
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IF nChars > 0 THEN Texts.Read(r, ch); DEC (nChars) ELSE EXIT END
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END (* LOOP *)
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@ -154,18 +154,18 @@ BEGIN
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END CopySourcePart;
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PROCEDURE GenErrorMsg (errTyp, errSym: INTEGER; VAR errNr: INTEGER);
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VAR i: INTEGER; name: ARRAY 32 OF CHAR; sn: CRT.SymbolNode;
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VAR i: INTEGER; name: ARRAY 32 OF CHAR; sn: CRT.SymbolNode;
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BEGIN
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INC (errorNr); errNr := errorNr;
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CRT.GetSym (errSym, sn); COPY(sn.name, name);
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i := 0; WHILE name[i] # 0X DO IF name[i] = CHR(34) THEN name[i] := "'" END; INC(i) END;
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i := 0; WHILE name[i] # 0X DO IF name[i] = CHR(34) THEN name[i] := "'" END ; INC(i) END ;
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Texts.WriteString(err, " |");
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Texts.WriteInt (err, errNr, 3); Texts.WriteString (err, ": Msg("); Texts.Write(err, CHR(34));
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CASE errTyp OF
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| tErr : Texts.WriteString (err, name); Texts.WriteString (err, " expected")
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| altErr : Texts.WriteString (err, "invalid "); Texts.WriteString (err, name)
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| syncErr: Texts.WriteString (err, "this symbol not expected in "); Texts.WriteString (err, name)
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END;
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END ;
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Texts.Write(err, CHR(34)); Texts.Write(err, ")"); Texts.WriteLn(err)
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END GenErrorMsg;
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@ -174,27 +174,27 @@ PROCEDURE NewCondSet (set: CRT.Set): INTEGER;
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BEGIN
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i := 1; (*skip symSet[0]*)
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WHILE i <= maxSS DO
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IF Sets.Equal(set, symSet[i]) THEN RETURN i END;
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INC(i)
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END;
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INC(maxSS); IF maxSS > symSetSize THEN Restriction (9) END;
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IF Sets.Equal(set, symSet[i]) THEN RETURN i END ;
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INC(i)
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END ;
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INC(maxSS); IF maxSS > symSetSize THEN Restriction (9) END ;
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symSet[maxSS] := set;
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RETURN maxSS
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END NewCondSet;
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PROCEDURE GenCond (set: CRT.Set);
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VAR sx, i, n: INTEGER;
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PROCEDURE Small(s: CRT.Set): BOOLEAN;
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BEGIN
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i := Sets.size;
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WHILE i <= CRT.maxT DO
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IF Sets.In(set, i) THEN RETURN FALSE END;
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IF Sets.In(set, i) THEN RETURN FALSE END ;
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INC(i)
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END;
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END ;
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RETURN TRUE
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END Small;
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BEGIN
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n := Sets.Elements(set, i);
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(*IF n = 0 THEN PutS(" FALSE") (*this branch should never be taken*)
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@ -206,11 +206,11 @@ BEGIN
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IF Sets.In (set, i) THEN
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PutS(" (sym = "); PutI(i); Texts.Write(syn, ")");
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DEC(n); IF n > 0 THEN PutS(" OR") END
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END;
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END ;
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INC(i)
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END
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ELSE PutS(" sym IN symSet["); PutI(NewCondSet(set)); PutS(",0]")
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END;*)
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END ;*)
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IF n = 0 THEN PutS(" FALSE") (*this branch should never be taken*)
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ELSIF n <= maxTerm THEN
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i := 0;
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@ -218,12 +218,12 @@ BEGIN
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IF Sets.In (set, i) THEN
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PutS(" (sym = "); PutI(i); Texts.Write(syn, ")");
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DEC(n); IF n > 0 THEN PutS(" OR") END
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END;
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END ;
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INC(i)
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END
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ELSE PutS(" StartOf("); PutI(NewCondSet(set)); PutS(") ")
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END;
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END ;
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END GenCond;
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PROCEDURE GenCode (gp, indent: INTEGER; checked: CRT.Set);
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@ -233,15 +233,15 @@ BEGIN
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WHILE gp > 0 DO
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CRT.GetNode (gp, gn);
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CASE gn.typ OF
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| CRT.nt:
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Indent(indent);
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CRT.GetSym(gn.p1, sn); PutS(sn.name);
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IF gn.pos.beg >= 0 THEN
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Texts.Write(syn, "("); CopySourcePart(gn.pos, 0); Texts.Write(syn, ")")
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END;
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END ;
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PutS(";$")
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| CRT.t:
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CRT.GetSym(gn.p1, sn); Indent(indent);
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IF Sets.In(checked, gn.p1) THEN
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@ -249,32 +249,32 @@ BEGIN
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ELSE
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PutS("Expect("); PutI(gn.p1); PutS(");$")
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END
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| CRT.wt:
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CRT.CompExpected(ABS(gn.next), curSy, s1);
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CRT.GetSet(0, s2); Sets.Unite(s1, s2);
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CRT.GetSym(gn.p1, sn); Indent(indent);
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PutS("ExpectWeak("); PutI(gn.p1); PutS(", "); PutI(NewCondSet(s1)); PutS(");$")
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| CRT.any:
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Indent(indent); PutS("Get;$")
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| CRT.eps: (* nothing *)
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| CRT.sem:
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| CRT.sem:
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CopySourcePart(gn.pos, indent); PutS(";$");
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| CRT.sync:
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CRT.GetSet(gn.p1, s1);
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GenErrorMsg (syncErr, curSy, errNr);
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Indent(indent);
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Indent(indent);
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PutS("WHILE ~("); GenCond(s1); PutS(") DO Error(");
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PutI(errNr); PutS("); Get END;$")
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PutI(errNr); PutS("); Get END ;$")
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| CRT.alt:
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CRT.CompFirstSet(gp, s1); equal := Sets.Equal(s1, checked);
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alts := Alternatives(gp);
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IF alts > 5 THEN Indent(indent); PutS("CASE sym OF$") END;
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IF alts > 5 THEN Indent(indent); PutS("CASE sym OF$") END ;
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gp2 := gp;
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WHILE gp2 # 0 DO
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CRT.GetNode(gp2, gn2);
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@ -284,16 +284,16 @@ BEGIN
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ELSIF gp2 = gp THEN PutS("IF"); GenCond(s1); PutS(" THEN$")
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ELSIF (gn2.p2 = 0) & equal THEN PutS("ELSE$")
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ELSE PutS("ELSIF"); GenCond(s1); PutS(" THEN$")
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END;
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END ;
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Sets.Unite(s1, checked);
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GenCode(gn2.p1, indent + 2, s1);
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gp2 := gn2.p2
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END;
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END ;
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IF ~ equal THEN
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GenErrorMsg(altErr, curSy, errNr);
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Indent(indent); PutS("ELSE Error("); PutI(errNr); PutS(")$")
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END;
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Indent(indent); PutS("END;$")
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END ;
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Indent(indent); PutS("END ;$")
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| CRT.iter:
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CRT.GetNode(gn.p1, gn2);
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@ -302,58 +302,58 @@ BEGIN
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CRT.CompExpected(ABS(gn2.next), curSy, s1);
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CRT.CompExpected(ABS(gn.next), curSy, s2);
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CRT.GetSym(gn2.p1, sn);
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PutS(" WeakSeparator("); PutI(gn2.p1); PutS(", "); PutI(NewCondSet(s1));
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PutS(" WeakSeparator("); PutI(gn2.p1); PutS(", "); PutI(NewCondSet(s1));
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PutS(", "); PutI(NewCondSet(s2)); PutS(") ");
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Sets.Clear(s1); (*for inner structure*)
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IF gn2.next > 0 THEN gp2 := gn2.next ELSE gp2 := 0 END
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ELSE
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gp2 := gn.p1; CRT.CompFirstSet(gp2, s1); GenCond(s1)
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END;
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END ;
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PutS(" DO$");
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GenCode(gp2, indent + 2, s1);
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Indent(indent); PutS("END;$")
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Indent(indent); PutS("END ;$")
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| CRT.opt:
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CRT.CompFirstSet(gn.p1, s1);
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IF ~ Sets.Equal(checked, s1) THEN
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Indent(indent); PutS("IF"); GenCond(s1); PutS(" THEN$");
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GenCode(gn.p1, indent + 2, s1);
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Indent(indent); PutS("END;$")
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Indent(indent); PutS("END ;$")
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ELSE GenCode(gn.p1, indent, checked)
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END
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END; (*CASE*)
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IF ~ (gn.typ IN {CRT.eps, CRT.sem, CRT.sync}) THEN Sets.Clear(checked) END;
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END ; (*CASE*)
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IF ~ (gn.typ IN {CRT.eps, CRT.sem, CRT.sync}) THEN Sets.Clear(checked) END ;
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gp := gn.next
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END
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END GenCode;
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PROCEDURE GenCodePragmas;
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VAR i, p: INTEGER; sn: CRT.SymbolNode;
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PROCEDURE P(s1, s2: ARRAY OF CHAR);
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BEGIN
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PutS(" "); PutS(scanner); PutS(s1); PutS(" := "); PutS(scanner); PutS(s2); PutS(";$")
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END P;
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BEGIN
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i := CRT.maxT + 1;
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WHILE i <= CRT.maxP DO
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WHILE i <= CRT.maxP DO
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CRT.GetSym(i, sn);
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PutS(" IF sym = "); PutI(i); PutS(" THEN$"); CopySourcePart(sn.semPos, 9); PutS("$ END;$");
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PutS(" IF sym = "); PutI(i); PutS(" THEN$"); CopySourcePart(sn.semPos, 9); PutS("$ END ;$");
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INC(i)
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END;
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END ;
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P(".nextPos", ".pos"); P(".nextCol", ".col"); P(".nextLine", ".line"); P(".nextLen", ".len")
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END GenCodePragmas;
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PROCEDURE GenProcedureHeading (sn: CRT.SymbolNode; forward: BOOLEAN);
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BEGIN
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PutS("PROCEDURE ");
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IF forward THEN Texts.Write(syn, "^") END;
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IF forward THEN Texts.Write(syn, "^") END ;
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PutS(sn.name);
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IF sn.attrPos.beg >= 0 THEN
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IF sn.attrPos.beg >= 0 THEN
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Texts.Write(syn, "("); CopySourcePart(sn.attrPos, 0); Texts.Write(syn, ")")
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END;
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END ;
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PutS(";$")
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END GenProcedureHeading;
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@ -365,7 +365,7 @@ BEGIN
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WHILE sp <= CRT.lastNt DO (* for all nonterminals *)
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CRT.GetSym (sp, sn); GenProcedureHeading(sn, TRUE);
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INC(sp)
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END;
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END ;
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Texts.WriteLn(syn)
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END
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END GenForwardRefs;
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@ -376,26 +376,26 @@ BEGIN
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curSy := CRT.firstNt;
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WHILE curSy <= CRT.lastNt DO (* for all nonterminals *)
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CRT.GetSym (curSy, sn); GenProcedureHeading (sn, FALSE);
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IF sn.semPos.beg >= 0 THEN CopySourcePart(sn.semPos, 2); PutS(" $") END;
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IF sn.semPos.beg >= 0 THEN CopySourcePart(sn.semPos, 2); PutS(" $") END ;
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PutS("BEGIN$"); Sets.Clear(checked);
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GenCode (sn.struct, 2, checked);
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GenCode (sn.struct, 2, checked);
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PutS("END "); PutS(sn.name); PutS(";$$");
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INC (curSy);
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END;
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END ;
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END GenProductions;
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PROCEDURE InitSets;
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VAR i, j: INTEGER;
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BEGIN
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i := 0; CRT.GetSet(0, symSet[0]);
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WHILE i <= maxSS DO
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WHILE i <= maxSS DO
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j := 0;
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WHILE j <= CRT.maxT DIV Sets.size DO
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PutS(" symSet["); PutI(i); PutS(", ");PutI(j);
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PutS(" symSet["); PutI(i); PutS(", ");PutI(j);
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PutS("] := {"); PutSet(symSet[i, j]); PutS("};$");
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INC(j)
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END;
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INC(i)
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END ;
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INC(i)
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END
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END InitSets;
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@ -406,29 +406,29 @@ PROCEDURE GenCompiler*;
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VAR errNr, i: INTEGER; checked: CRT.Set;
|
||||
gn: CRT.GraphNode; sn: CRT.SymbolNode;
|
||||
parser: ARRAY 32 OF CHAR;
|
||||
t: Texts.Text; pos: LONGINT;
|
||||
t: Texts.Text; pos: LONGINT;
|
||||
ch1, ch2: CHAR;
|
||||
BEGIN
|
||||
CRT.GetNode(CRT.root, gn); CRT.GetSym(gn.p1, sn);
|
||||
COPY(sn.name, parser); i := Length(parser); parser[i] := "P"; parser[i+1] := 0X;
|
||||
COPY(parser, scanner); scanner[i] := "S";
|
||||
|
||||
|
||||
NEW(t); Texts.Open(t, "Parser.FRM"); Texts.OpenReader(fram, t, 0);
|
||||
IF t.len = 0 THEN
|
||||
Texts.WriteString(w, "Parser.FRM not found"); Texts.WriteLn(w);
|
||||
Texts.Append(Oberon.Log, w.buf); HALT(99)
|
||||
END;
|
||||
END ;
|
||||
|
||||
Texts.OpenWriter(err); Texts.WriteLn(err);
|
||||
i := 0;
|
||||
WHILE i <= CRT.maxT DO GenErrorMsg(tErr, i, errNr); INC(i) END;
|
||||
WHILE i <= CRT.maxT DO GenErrorMsg(tErr, i, errNr); INC(i) END ;
|
||||
|
||||
(*----- write *P.Mod -----*)
|
||||
Texts.OpenWriter(syn);
|
||||
NEW(t); (*t.notify := Show;*) Texts.Open(t, "");
|
||||
NEW(t); t.notify := Show; Texts.Open(t, "");
|
||||
CopyFramePart("-->modulename"); PutS(parser);
|
||||
CopyFramePart("-->scanner"); PutS(scanner);
|
||||
IF CRT.importPos.beg >= 0 THEN PutS(", "); CopySourcePart(CRT.importPos, 0) END;
|
||||
IF CRT.importPos.beg >= 0 THEN PutS(", "); CopySourcePart(CRT.importPos, 0) END ;
|
||||
CopyFramePart("-->constants");
|
||||
PutS("maxP = "); PutI(CRT.maxP); PutS(";$");
|
||||
PutS(" maxT = "); PutI(CRT.maxT); PutS(";$");
|
||||
|
|
@ -444,7 +444,7 @@ BEGIN
|
|||
PutS(" ELSE EXIT$");
|
||||
PutS(" END$");
|
||||
PutS("END$")
|
||||
END;
|
||||
END ;
|
||||
CopyFramePart("-->productions"); GenForwardRefs; GenProductions;
|
||||
CopyFramePart("-->parseRoot"); Sets.Clear(checked); GenCode (CRT.root, 2, checked);
|
||||
CopyFramePart("-->initialization"); InitSets;
|
||||
|
|
@ -472,3 +472,4 @@ END Init;
|
|||
BEGIN
|
||||
Texts.OpenWriter(w)
|
||||
END CRX.
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue