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-- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
-- All rights reserved.
-- Copyright (C) 2007-2009, Gabriel Dos Reis.
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are
-- met:
--
-- - Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
--
-- - Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in
-- the documentation and/or other materials provided with the
-- distribution.
--
-- - Neither the name of The Numerical ALgorithms Group Ltd. nor the
-- names of its contributors may be used to endorse or promote products
-- derived from this software without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
-- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import sys_-macros
import astr
namespace BOOT
module posit where
%Position <=> %List
tokType: %List -> %Symbol
tokPart: %List -> %Thing
tokPosn: %List -> %Position
$nopos ==
['noposition]
poNoPosition() == $nopos
pfNoPosition() == poNoPosition()
poNoPosition? pos == pos is ["noposition",:.]
pfNoPosition? pos == poNoPosition? pos
pfSourceText pf ==
lnString poGetLineObject pfPosn pf
pfPosOrNopos pf ==
poIsPos? (pos := pfSourcePosition pf) => pos
poNoPosition()
poIsPos? pos ==
PAIRP pos and PAIRP first pos and #first pos = 5
lnCreate(extBl, st, gNo, :optFileStuff) ==
lNo :=
num := IFCAR optFileStuff => num
0
fN := IFCAR IFCDR optFileStuff
[extBl, st, gNo, lNo, fN]
lnString lineObject ==
lineObject.1
lnExtraBlanks lineObject ==
lineObject.0
lnGlobalNum lineObject ==
lineObject.2
lnSetGlobalNum(lineObject, num) ==
lineObject.2 := num
lnLocalNum lineObject ==
lineObject.3
lnFileName lineObject ==
(fN := lnFileName? lineObject) => fN
ncBug('"there is no file name in %1", [lineObject] )
lnFileName? lineObject ==
atom (fN := lineObject.4) => nil
fN
lnPlaceOfOrigin lineObject ==
lineObject.4
lnImmediate? lineObject ==
not lnFileName? lineObject
poGetLineObject posn ==
first posn
pfGetLineObject posn == poGetLineObject posn
pfSourceStok x==
if pfLeaf? x
then x
else if null pfParts x
then 'NoToken
else pfSourceStok pfFirst x
pfSourceToken form ==
if pfLeaf? form
then pfLeafToken form
else if null pfParts form
then 'NoToken
else pfSourceToken(pfFirst form)
--constructer and selectors for leaf tokens
tokConstruct(hd,tok,:pos)==
a:=cons(hd,tok)
IFCAR pos =>
pfNoPosition? first pos=> a
ncPutQ(a,"posn",first pos)
a
a
tokType x== ncTag x
tokPart x== rest x
tokPosn x==
a:= QASSQ("posn",ncAlist x)
if a then rest a else pfNoPosition()
pfAbSynOp form ==
hd := first form
IFCAR hd or hd
pfAbSynOp?(form, op) ==
hd := first form
EQ(hd, op) or EQCAR(hd, op)
pfLeaf? form ==
MEMQ(pfAbSynOp form,
'(id idsy symbol string char float expression integer
Document error))
pfLeaf(x,y,:z) == tokConstruct(x,y, IFCAR z or pfNoPosition())
pfLeafToken form == tokPart form
pfLeafPosition form == tokPosn form
pfTree(x,y) == [x,:y]
pfParts form == rest form
pfFirst form == second form
pfSecond form == third form
pfPosn pf == pfSourcePosition pf
pfSourcePosition form ==
--null form => pfNoPosition()
pfLeaf? form => pfLeafPosition form
parts := pfParts form
pos := $nopos
for p in parts while poNoPosition? pos repeat
pos := pfSourcePosition p
pos
pfSourcePositions form ==
if pfLeaf? form
then
a:=tokPosn form
if null a
then nil
else [a]
else pfSourcePositionlist pfParts form
pfSourcePositionlist x==
if null x
then nil
else APPEND(pfSourcePositions first x,pfSourcePositionlist rest x)
poCharPosn posn == rest posn
pfCharPosn posn == poCharPosn posn
poLinePosn posn ==
posn => lnLocalNum poGetLineObject posn --VECP posn =>
CDAR posn
pfLinePosn posn == poLinePosn posn
poGlobalLinePosn posn ==
posn => lnGlobalNum poGetLineObject posn
ncBug('"old style pos objects have no global positions",[])
pfGlobalLinePosn posn == poGlobalLinePosn posn
poFileName posn ==
posn => lnFileName poGetLineObject posn
CAAR posn
pfFileName posn == poFileName posn
poFileName? posn ==
posn = ['noposition] => nil
posn => lnFileName? poGetLineObject posn
CAAR posn
pfFileName? posn == poFileName? posn
poPlaceOfOrigin posn ==
lnPlaceOfOrigin poGetLineObject posn
pfPlaceOfOrigin posn == poPlaceOfOrigin posn
poNopos? posn ==
posn = ['noposition]
pfNopos? posn == poNopos? posn
poPosImmediate? txp==
poNopos? txp => nil
lnImmediate? poGetLineObject txp
pfPosImmediate? txp == poPosImmediate? txp
poImmediate? txp==
lnImmediate? poGetLineObject txp
pfImmediate? txp == poImmediate? txp
compareposns(a,b)==
c:=poGlobalLinePosn a
d:=poGlobalLinePosn b
if c=d then poCharPosn a>=poCharPosn b else c>=d
pfPrintSrcLines(pf) ==
lines := pfSourcePositions pf
lno := 0
for l in lines repeat
line := first l
if lno < lnGlobalNum(line) then
FORMAT(true, '" ~A~%", lnString line)
lno := lnGlobalNum(line)
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