src/pset-parse.lisp: Allow brace-enclosed fragments as property values.

diff --git a/src/pset-parse.lisp b/src/pset-parse.lisp
index f81ce92..11b4003 100644 (file)
--- a/src/pset-parse.lisp
+++ b/src/pset-parse.lisp
@@ -82,7 +82,8 @@
    expression: term | expression `+' term | expression `-' term
    term: factor | term `*' factor | term `/' factor
    factor: primary | `+' factor | `-' factor
-   primary: int | id | string | `(' expression `)' | `?' lisp-expression
+   primary: int | id | string | `(' expression `)' | `{' fragment `}'
+     | `?' lisp-expression
 
    Only operators for dealing with integers are provided."
       (with-parser-context (token-scanner-context :scanner scanner)
@@ -101,6 +102,11 @@
                              (multiple-value-bind (type value)
                                  (decode-property sexp)
                                (values (cons type value) t t))))
+                          (#\{
+                           (values (cons :fragment
+                                         (parse-delimited-fragment scanner
+                                                                   #\{ #\}))
+                                         t t))
                           (t
                            (values (list :int :id :char :string #\?)
                                    nil nil)))))