MODULE M3CWarnTool;
*************************************************************************
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 M3Context, M3CUnit, M3Args, M3Conventions, M3CGo;
IMPORT AST, ASTWalk, M3AST_AS;
IMPORT M3AST_AS_F, M3AST_FE_F;
IMPORT M3CChkRaises, M3CChkUses, M3CChkReturn, M3CChkNarrow,
M3CChkObsolete;
CONST
Version = "09-Oct-92";
VAR
tool_g: M3Args.T;
PROCEDURE Get(): M3Args.T RAISES {}=
BEGIN
RETURN tool_g;
END Get;
TYPE Extension = M3CGo.Extension OBJECT OVERRIDES extend := Extend END;
PROCEDURE Init() RAISES {}=
BEGIN
M3CGo.AddExtension(NEW(Extension));
END Init;
TYPE ASTWalkClosure = ASTWalk.Closure OBJECT
usesHandle: M3CChkUses.Handle := NIL;
raisesHandle: M3CChkRaises.Handle := NIL;
returnHandle: M3CChkReturn.Handle := NIL;
narrowHandle: M3CChkNarrow.Handle := NIL;
obsHandle: M3CChkObsolete.Handle := NIL;
OVERRIDES
callback := Node;
END;
PROCEDURE Extend(
<*UNUSED*> e: M3CGo.Extension;
<*UNUSED*> context: M3Context.T;
cu: M3AST_AS.Compilation_Unit;
<*UNUSED*> VAR (*inout*) phases: M3CUnit.Status;
) RAISES {}=
VAR
all := M3Args.GetFlag(tool_g, WA_Arg);
any := all;
BEGIN
IF M3Conventions.PrimarySource IN cu.fe_status AND
M3CUnit.State.SemChecked IN cu.fe_status THEN
TYPECASE cu.as_root OF
| NULL =>
(* no tree to analyse *)
| M3AST_AS.UNIT_GEN_DEF =>
(* ignore generic definitions *)
ELSE
WITH cl = NEW(ASTWalkClosure) DO
IF all OR M3Args.GetFlag(tool_g, WU_Arg) THEN
any := TRUE;
cl.usesHandle := M3CChkUses.NewHandle(cu,
M3Args.GetFlag(tool_g, WIF_Arg));
END;
IF all OR M3Args.GetFlag(tool_g, WE_Arg) THEN
any := TRUE;
cl.raisesHandle := M3CChkRaises.NewHandle(cu);
END;
IF all OR M3Args.GetFlag(tool_g, WR_Arg) THEN
any := TRUE;
cl.returnHandle := M3CChkReturn.NewHandle(cu);
END;
IF all OR M3Args.GetFlag(tool_g, WN_Arg) THEN
any := TRUE;
cl.narrowHandle := M3CChkNarrow.NewHandle(cu);
END;
IF all OR M3Args.GetFlag(tool_g, WO_Arg) THEN
any := TRUE;
cl.obsHandle := M3CChkObsolete.NewHandle(cu);
END;
IF any THEN
<*FATAL ANY*> BEGIN
ASTWalk.ModeVisitNodes(cu, cl, ASTWalk.OnEntryAndExit);
END;
IF cl.usesHandle # NIL THEN M3CChkUses.CloseHandle(cl.usesHandle) END;
END;
END;
END; (* typecase *)
END;
END Extend;
PROCEDURE Node(cl: ASTWalkClosure; n: AST.NODE; vm: ASTWalk.VisitMode)=
BEGIN
IF cl.usesHandle # NIL THEN M3CChkUses.Node(cl.usesHandle, n, vm) END;
IF cl.raisesHandle # NIL THEN M3CChkRaises.Node(cl.raisesHandle, n, vm) END;
IF cl.returnHandle # NIL THEN M3CChkReturn.Node(cl.returnHandle, n, vm) END;
IF cl.narrowHandle # NIL THEN M3CChkNarrow.Node(cl.narrowHandle, n, vm) END;
IF cl.obsHandle # NIL THEN M3CChkObsolete.Node(cl.obsHandle, n, vm) END;
END Node;
BEGIN
tool_g := M3Args.New("m3cwarn", "analyse code and warn of problems",
Version);
M3Args.RegisterFlag(tool_g, WE_Arg, "check for uncaught exceptions");
M3Args.RegisterFlag(tool_g, WU_Arg, "check for unused declarations");
M3Args.RegisterFlag(tool_g, WIF_Arg,
"don\'t warn about unused FOR loop control variables");
M3Args.RegisterFlag(tool_g, WR_Arg, "check for missing returns");
M3Args.RegisterFlag(tool_g, WN_Arg, "check for implicit NARROWs");
M3Args.RegisterFlag(tool_g, WO_Arg, "check for using OBSOLETEs");
M3Args.RegisterFlag(tool_g, WA_Arg, "check for all of the above");
END M3CWarnTool.