blob: b7298cdd9af07e12fa8821e71e6e91735022b5d9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
Grm. Grammar ::= Header ";" Abstract ";" [Concrete] ";" ;
Hdr. Header ::= "grammar" CId "(" [CId] ")" ;
Abs. Abstract ::= "abstract" "{" [AbsDef] "}" ";" ;
Cnc. Concrete ::= "concrete" CId "{" [CncDef] "}" ;
Fun. AbsDef ::= CId ":" Type "=" Exp ;
Lin. CncDef ::= CId "=" Term ;
Typ. Type ::= [CId] "->" CId ;
Tr. Exp ::= "(" Atom [Exp] ")" ;
AC. Atom ::= CId ;
AS. Atom ::= String ;
AI. Atom ::= Integer ;
trA. Exp ::= Atom ;
define trA a = Tr a [] ;
R. Term ::= "[" [Term] "]" ; -- record/table
P. Term ::= Term "[" Term "]" ; -- projection/selection
S. Term ::= "(" [Term] ")" ; -- sequence with ++
K. Term ::= Tokn ; -- token
V. Term ::= "$" Integer ; -- argument
C. Term ::= Integer ; -- parameter value/label
F. Term ::= CId ; -- global constant
L. Term ::= "$" CId ; -- local (bound) variable
A. Term ::= "(" CId "->" Term ")" ; -- lambda abstraction (compressed table)
FV. Term ::= "[|" [Term] "|]" ; -- free variation
W. Term ::= "(" String "+" Term ")" ; -- prefix + suffix table
KS. Tokn ::= String ;
KP. Tokn ::= "[" "pre" [String] "[" [Variant] "]" "]" ;
Var. Variant ::= [String] "/" [String] ;
terminator Concrete ";" ;
terminator AbsDef ";" ;
terminator CncDef ";" ;
terminator CId "" ;
separator Term "," ;
terminator Exp "" ;
terminator String "" ;
separator Variant "," ;
token CId (('_' | letter) (letter | digit | '\'' | '_')*) ;
|
