diff options
Diffstat (limited to 'src/guile/skribilo/ast.scm')
| -rw-r--r-- | src/guile/skribilo/ast.scm | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/guile/skribilo/ast.scm b/src/guile/skribilo/ast.scm index 140f861..747c364 100644 --- a/src/guile/skribilo/ast.scm +++ b/src/guile/skribilo/ast.scm @@ -32,6 +32,7 @@ :autoload (skribilo location) (location?) + :use-module (ice-9 match) :use-module (ice-9 optargs) :export (<ast> ast? ast-loc ast-loc-set! @@ -42,6 +43,7 @@ <unresolved> unresolved? unresolved-proc <handle> handle? handle-ast handle-body <node> node? node-options node-loc node-body + node-children <processor> processor? processor-combinator processor-engine <markup> markup? markup-options is-markup? @@ -274,6 +276,21 @@ (equal? (node-body a) (node-body b)))) +(define (node-children n) + ;; Return the children of N, even those found in sub-lists of N's body. + (reverse + (let loop ((body (node-body n)) + (result '())) + (match body + (() + result) + (((? node? n) rest ...) + (loop rest (cons n result))) + (((sub-list ...) rest ...) + (loop rest (loop sub-list result))) + ((_ rest ...) + (loop rest result)))))) + (define node-loc ast-loc) (define-method (ast->string (ast <node>)) |