extra exports for repl

brag/codegen/codegen.rkt

@@ -88,7 +88,13 @@
                      [PARSE-TO-DATUM (syntax-local-introduce (or (syntax-property rules-stx 'parse-to-datum) (error 'no-parse-to-datum-id-prop)))]
                      [PARSE-TREE (syntax-local-introduce (or (syntax-property rules-stx 'parse-tree) (error 'no-parse-tree-id-prop)))]
                      [MAKE-RULE-PARSER (syntax-local-introduce (or (syntax-property rules-stx 'make-rule-parser) (error 'no-make-rule-parser-id-prop)))]
-                     [ALL-TOKEN-TYPES (syntax-local-introduce (or (syntax-property rules-stx 'all-token-types) (error 'no-all-token-types-id-prop)))])
+                     [ALL-TOKEN-TYPES (syntax-local-introduce (or (syntax-property rules-stx 'all-token-types) (error 'no-all-token-types-id-prop)))]
+                     [TOKEN (syntax-local-introduce (or (syntax-property rules-stx 'token) (error 'no-token-id-prop)))]
+                     [APPLY-LEXER (syntax-local-introduce (or (syntax-property rules-stx 'apply-lexer) (error 'no-apply-lexer-id-prop)))]
+                     [APPLY-TOKENIZER-MAKER (syntax-local-introduce (or (syntax-property rules-stx 'apply-tokenizer-maker) (error 'no-apply-tokenizer-maker-id-prop)))])
+         ;; this stx object represents the top level of a #lang brag module.
+         ;; so any `define`s are automatically available at the repl.
+         ;; and only identifiers explicitly `provide`d are visible on import.
          (quasisyntax/loc rules-stx
            (begin             
              (require br-parser-tools/lex
@@ -110,6 +116,11 @@
                       #;[struct-out exn:fail:parsing]
                       )
              
+             ;; helpers from brag/support
+             (define TOKEN token)
+             (define APPLY-LEXER apply-lexer)
+             (define APPLY-TOKENIZER-MAKER apply-tokenizer-maker)
+             
              (define-tokens enumerated-tokens (token-type ...))
              
              ;; all-token-types lists all the tokens (except for EOF)

brag/codegen/sexp-based-lang.rkt

@@ -96,11 +96,9 @@
   (syntax-case module-stx ()
     [(_ RULES-STX)
      (with-syntax ([RULES-STX (for/fold ([stx #'RULES-STX])
-                                        ([sym (in-list '(parse parse-to-datum parse-tree make-rule-parser all-token-types))])
+                                        ([sym (in-list '(parse parse-to-datum parse-tree make-rule-parser all-token-types token apply-lexer apply-tokenizer-maker))])
                                 (syntax-property stx sym (syntax-local-introduce (replace-context module-stx (datum->syntax #f sym)))))])
-       #'(#%module-begin
+       #'(#%module-begin RULES-STX))]))
-          (provide (all-defined-out))
-          RULES-STX))]))
 
 
 (define-syntax (rules rules-stx)