MODULE M3CBrand;
*************************************************************************
Copyright (C) Olivetti 1989
All Rights reserved
Use and copy of this software and preparation of derivative works based
upon this software are permitted to any person, provided this same
copyright notice and the following Olivetti warranty disclaimer are
included in any copy of the software or any modification thereof or
derivative work therefrom made by any person.
This software is made available AS IS and Olivetti disclaims all
warranties with respect to this software, whether expressed or implied
under any law, including all implied warranties of merchantibility and
fitness for any purpose. In no event shall Olivetti be liable for any
damages whatsoever resulting from loss of use, data or profits or
otherwise arising out of or in connection with the use or performance
of this software.
*************************************************************************
Copyright
IMPORT Text, TextExtras, Fmt;
IMPORT AST, M3AST_AS, M3AST_SM;
IMPORT M3AST_LX_F, M3AST_AS_F, M3AST_SM_F;
IMPORT ASTWalk;
IMPORT M3CId, M3CLiteral, M3CSrcPos;
IMPORT M3CBackEnd;
REVEAL
Handle = BRANDED REF RECORD
unitId: M3AST_AS.UNIT_ID;
unitBody: M3AST_AS.Block;
block: M3AST_AS.Block;
typeDecl: M3AST_AS.Concrete_decl;
revelation: M3AST_AS.Concrete_reveal;
count := 0;
END;
PROCEDURE NewHandle(
unit: M3AST_AS.UNIT_NORMAL;
block: M3AST_AS.Block := NIL;
typeDecl: M3AST_AS.Concrete_decl := NIL;
revelation: M3AST_AS.Concrete_reveal := NIL)
: Handle
RAISES {}=
BEGIN
RETURN NEW(Handle, unitId := unit.as_id, unitBody := unit.as_block,
block := block, typeDecl := typeDecl, revelation := revelation);
END NewHandle;
<*INLINE*> PROCEDURE UnitSep(unitId: M3AST_AS.UNIT_ID): Text.T RAISES {}=
BEGIN
IF ISTYPE(unitId, M3AST_AS.Module_id) THEN
RETURN ",";
ELSE
RETURN ".";
END;
END UnitSep;
<*INLINE*> PROCEDURE UnitText(unitId: M3AST_AS.UNIT_ID): Text.T RAISES {}=
BEGIN
IF unitId.lx_symrep = NIL THEN RETURN "" END;
RETURN M3CId.ToText(unitId.lx_symrep);
END UnitText;
PROCEDURE UnnamedBrand(
unitId: M3AST_AS.UNIT_ID;
srcPos: M3CSrcPos.T)
: M3AST_SM.Exp_value
RAISES {}=
VAR
unitSep := UnitSep(unitId);
pos: CARDINAL;
line := M3CSrcPos.Unpack(srcPos, pos);
BEGIN
RETURN TextToExp_value(TextExtras.Join(
UnitText(unitId), unitSep, Fmt.Int(line), unitSep, Fmt.Int(pos)));
END UnnamedBrand;
PROCEDURE NamedBrand(
unitId: M3AST_AS.UNIT_ID;
typeId: M3AST_AS.Type_id;
VAR count: INTEGER)
: M3AST_SM.Exp_value
RAISES {}=
VAR
unitSep := UnitSep(unitId);
unitText := UnitText(unitId);
typeText := M3CId.ToText(typeId.lx_symrep);
result: Text.T;
BEGIN
IF count = 0 THEN
result := TextExtras.Join(unitText, unitSep, typeText);
ELSE
result :=
TextExtras.Join(unitText, unitSep, typeText, unitSep, Fmt.Int(count));
END;
INC(count);
RETURN TextToExp_value(result);
END NamedBrand;
PROCEDURE TextToExp_value(t: TEXT): M3AST_SM.Exp_value RAISES {}=
VAR
er: M3AST_SM.Exp_value;
text_lit: M3AST_AS.Text_literal := NEW(M3AST_AS.Text_literal).init();
BEGIN
text_lit.lx_litrep := M3CLiteral.Enter(
TextExtras.Join("\"", t, "\""));
EVAL M3CBackEnd.LiteralValue(text_lit, er);
RETURN er
END TextToExp_value;
PROCEDURE Set(h: Handle; n: AST.NODE; vm: ASTWalk.VisitMode) RAISES {}=
BEGIN
TYPECASE n OF
| M3AST_AS.Block(block) =>
IF vm = ASTWalk.VisitMode.Entry THEN
IF block # h.unitBody AND h.block = NIL THEN h.block := block END;
ELSE
IF block = h.block THEN h.block := NIL END;
END;
| M3AST_AS.Concrete_decl(typeDecl) =>
IF vm = ASTWalk.VisitMode.Entry THEN
h.count := 0;
h.typeDecl := typeDecl;
ELSE
h.typeDecl := NIL;
END;
| M3AST_AS.Concrete_reveal(revelation) =>
IF vm = ASTWalk.VisitMode.Entry THEN
h.count := 0;
h.revelation := revelation;
ELSE
h.revelation := NIL;
END;
| M3AST_AS.Brand(brand) =>
IF vm = ASTWalk.VisitMode.Entry THEN
IF brand.as_exp = NIL THEN
IF h.typeDecl # NIL AND h.block = NIL THEN
(* Top level type declaration *)
IF h.typeDecl.as_id.lx_symrep # NIL THEN
brand.sm_brand :=
NamedBrand(h.unitId, h.typeDecl.as_id, h.count);
END;
ELSIF h.revelation # NIL THEN
(* Revelation (bound to be top level) *)
TYPECASE h.revelation.as_qual_id.as_id.sm_def OF
| NULL =>
| M3AST_AS.Type_id(typeId) =>
brand.sm_brand := NamedBrand(h.unitId, typeId, h.count);
ELSE
END;
ELSE
brand.sm_brand := UnnamedBrand(h.unitId, brand.lx_srcpos);
END; (* if *)
ELSE
brand.sm_brand := brand.as_exp.sm_exp_value;
END; (* if *)
END;
ELSE
END; (* typecase *)
END Set;
BEGIN
END M3CBrand.