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[smlnj] Diff of /sml/trunk/src/cm/parse/parse.sml
[smlnj] / sml / trunk / src / cm / parse / parse.sml  
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Diff of /sml/trunk/src/cm/parse/parse.sml

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revision 285, Wed May 19 23:31:25 1999 UTC revision 286, Fri May 21 07:47:16 1999 UTC
# Line 6  Line 6 
6   * Author: Matthias Blume (blume@kurims.kyoto-u.ac.jp)   * Author: Matthias Blume (blume@kurims.kyoto-u.ac.jp)
7   *)   *)
8  signature CMPARSE = sig  signature CMPARSE = sig
9      val parse : AbsPath.t -> CMSemant.group option      val parse : Primitive.configuration -> AbsPath.t -> CMSemant.group option
10  end  end
11    
12  structure CMParse :> CMPARSE = struct  structure CMParse :> CMPARSE = struct
# Line 31  Line 31 
31       * function will get cached in SmlInfo.info but the source will change       * function will get cached in SmlInfo.info but the source will change
32       * when one re-runs the analysis. *)       * when one re-runs the analysis. *)
33    
34        fun parse primconf group = let
35    
36            val groupreg = GroupReg.new ()
37            val fnpolicy = FilenamePolicy.default
38            val params = { groupreg = groupreg,
39                           fnpolicy = fnpolicy,
40                           primconf = primconf }
41    
42      fun parse' (group, groupstack) = let      fun parse' (group, groupstack) = let
43    
44          val currentDir = AbsPath.dir group          val currentDir = AbsPath.dir group
# Line 42  Line 50 
50              { linewidth = !P.linewidth, flush = P.flush, consumer = P.say }              { linewidth = !P.linewidth, flush = P.flush, consumer = P.say }
51          val source = S.newSource (filename, 1, stream, false, errcons)          val source = S.newSource (filename, 1, stream, false, errcons)
52          val sourceMap = #sourceMap source          val sourceMap = #sourceMap source
53          val _ = GroupReg.register (group, source)              val _ = GroupReg.register groupreg (group, source)
54          fun error' region m b = let          fun error' region m b = let
55              val src = GroupReg.lookup group                  val src = GroupReg.lookup groupreg group
56          in          in
57              EM.error src region EM.COMPLAIN m b              EM.error src region EM.COMPLAIN m b
58          end          end
# Line 57  Line 65 
65           * This function is used to parse aliases and sub-groups. *)           * This function is used to parse aliases and sub-groups. *)
66          fun recParse (p1, p2) p =          fun recParse (p1, p2) p =
67              (case parse' (p, (group, (source, p1, p2)) :: groupstack) of              (case parse' (p, (group, (source, p1, p2)) :: groupstack) of
68                   NONE => (#anyErrors source := true; CMSemant.emptyGroup group)                       NONE => (#anyErrors source := true;
69                                  CMSemant.emptyGroup group)
70                 | SOME res => res)                 | SOME res => res)
71              handle exn as IO.Io _ => (error (p1, p2) (General.exnMessage exn);                       handle exn as IO.Io _ =>
72                             (error (p1, p2) (General.exnMessage exn);
73                                        CMSemant.emptyGroup group)                                        CMSemant.emptyGroup group)
74    
75          fun doMember (p, p1, p2, c, e) =          fun doMember (p, p1, p2, c, e) =
76              CMSemant.member (recParse (p1, p2))                  CMSemant.member (params, recParse (p1, p2))
77                              { sourcepath = p,                              { sourcepath = p,
78                                group = group,                                group = group,
79                                class = c,                                class = c,
# Line 93  Line 103 
103                  end                  end
104              in              in
105                  EM.error s (p1, p2) EM.COMPLAIN                  EM.error s (p1, p2) EM.COMPLAIN
106                     ("group hierarchy forms a cycle with " ^ AbsPath.spec group)                               ("group hierarchy forms a cycle with " ^
107                                  AbsPath.spec group)
108                     pphist;                     pphist;
109                  raise LrParser.ParseError                  raise LrParser.ParseError
110              end              end
# Line 118  Line 129 
129                   curstring := [];                   curstring := [];
130                   startpos := pos)                   startpos := pos)
131              fun addS c = curstring := c :: !curstring              fun addS c = curstring := c :: !curstring
132              fun addSC (s, offs) = addS (chr (ord (String.sub (s, 2)) - offs))                  fun addSC (s, offs) =
133                        addS (chr (ord (String.sub (s, 2)) - offs))
134              fun addSN (s, pos) = let              fun addSN (s, pos) = let
135                  val ns = substring (s, 1, 3)                  val ns = substring (s, 1, 3)
136                  val n = Int.fromString ns                  val n = Int.fromString ns
# Line 158  Line 170 
170                error = error }                error = error }
171          end          end
172    
173          fun inputc k =              fun inputc k = TextIO.input stream
             TextIO.input stream  
174    
175          val lexer = CMLex.makeLexer inputc lexarg          val lexer = CMLex.makeLexer inputc lexarg
176          val tokenStream = LrParser.Stream.streamify lexer          val tokenStream = LrParser.Stream.streamify lexer
177          val (parseResult, _) =          val (parseResult, _) =
178              CMParse.parse (lookAhead, tokenStream,              CMParse.parse (lookAhead, tokenStream,
179                             fn (s,p1,p2) => error (p1, p2) s,                             fn (s,p1,p2) => error (p1, p2) s,
180                             (group, context, error', error, recParse, doMember))                                 (group, context, error', error, recParse,
181                                    doMember))
182      in      in
183          TextIO.closeIn stream;          TextIO.closeIn stream;
184          if !(#anyErrors source) then NONE          if !(#anyErrors source) then NONE
185          else SOME parseResult          else SOME parseResult
186      end      end
187      handle LrParser.ParseError => NONE      handle LrParser.ParseError => NONE
188        in
189      fun parse group = (GroupReg.clear (); parse' (group, []))          parse' (group, [])
190        end
191  end  end
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  Added in v.286
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