[Nice-commit] Nice/src/bossa/parser Parser.jj,1.140,1.141

[<ar...@us...>]

Update of /cvsroot/nice/Nice/src/bossa/parser
In directory sc8-pr-cvs1:/tmp/cvs-serv32616/F:/nice/src/bossa/parser

Modified Files:
	Parser.jj 
Log Message:
Restricted the litarals used in patterns i.e. no floats or strings.

Index: Parser.jj
===================================================================
RCS file: /cvsroot/nice/Nice/src/bossa/parser/Parser.jj,v
retrieving revision 1.140
retrieving revision 1.141
diff -C2 -d -r1.140 -r1.141
*** Parser.jj	21 Feb 2003 13:04:37 -0000	1.140
--- Parser.jj	21 Feb 2003 21:51:26 -0000	1.141
***************
*** 1211,1215 ****
  {
    (
!     t="@" ( val=Literal() | tc=typeIdent() )
    | 
      t="#" tc=typeIdent() { exactlyAt = true; }
--- 1211,1215 ----
  {
    (
!     t="@" ( val=patternLiteral() | tc=typeIdent() )
    | 
      t="#" tc=typeIdent() { exactlyAt = true; }
***************
*** 1748,1752 ****
    { first=getToken(1); }
  
!   ( 
      LOOKAHEAD(funExp()) e1=funExp() 
    | LOOKAHEAD(monoSymbol() "=>") e1=simpleVarFunExp() 
--- 1748,1752 ----
    { first=getToken(1); }
  
!   ( //TODO: simplify next lookahead after removal of the 'fun' keyword.
      LOOKAHEAD(funExp()) e1=funExp() 
    | LOOKAHEAD(monoSymbol() "=>") e1=simpleVarFunExp() 
***************
*** 2121,2124 ****
--- 2121,2143 ----
      }
  | res=stringConstantExp()
+   )
+ { return res; }
+ }
+ 
+ Expression patternLiteral() :
+ //restricted literal for use in dispatch patterns
+ {
+   Expression res;
+   Token t;
+ }
+ {
+   (
+   "null" { res = NullExp.instance; }
+ | res=intConstantExp() 
+ | t=<CHARACTER_LITERAL> 
+     { res=ConstantExp.makeChar
+       (new LocatedString(t.image.substring(1,t.image.length()-1),
+ 			 new Location(t)));
+     }
    )
  { return res; }