diff options
Diffstat (limited to 'doc/ref/api-peg.texi')
-rw-r--r-- | doc/ref/api-peg.texi | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/doc/ref/api-peg.texi b/doc/ref/api-peg.texi index 82e2758b4..a6ab7080d 100644 --- a/doc/ref/api-peg.texi +++ b/doc/ref/api-peg.texi @@ -716,7 +716,7 @@ This produces rather pretty parse trees: Notice that when there's no entry in a field (e.g. @code{nameORcomment} for messagebus) the symbol is inserted. This is the ``don't throw away -any information'' rule---we succesfully matched a @code{nameORcomment} +any information'' rule---we successfully matched a @code{nameORcomment} of 0 characters (since we used @code{*} when defining it). This is usually what you want, because it allows you to e.g. use @code{list-ref} to pull out elements (since they all have known offsets). @@ -1013,19 +1013,19 @@ First, any string PEG is expanded into an s-expression PEG by the code in the @code{(ice-9 peg string-peg)} module. Then, the s-expression PEG that results is compiled into a parsing -function by the @code{(ice-9 peg codegen)} module. In particular, the -function @code{compile-peg-pattern} is called on the s-expression. It then +function by the @code{(ice-9 peg codegen)} module. In particular, the +function @code{compile-peg-pattern} is called on the s-expression. It then decides what to do based on the form it is passed. The PEG syntax can be expanded by providing @code{compile-peg-pattern} more -options for what to do with its forms. The extended syntax will be +options for what to do with its forms. The extended syntax will be associated with a symbol, for instance @code{my-parsing-form}, and will be called on all PEG expressions of the form @lisp (my-parsing-form ...) @end lisp -The parsing function should take two arguments. The first will be a +The parsing function should take two arguments. The first will be a syntax object containing a list with all of the arguments to the form (but not the form's name), and the second will be the @code{capture-type} argument that is passed to @code{define-peg-pattern}. @@ -1033,5 +1033,5 @@ syntax object containing a list with all of the arguments to the form New functions can be registered by calling @code{(add-peg-compiler! symbol function)}, where @code{symbol} is the symbol that will indicate a form of this type and @code{function} is the code generating function -described above. The function @code{add-peg-compiler!} is exported from +described above. The function @code{add-peg-compiler!} is exported from the @code{(ice-9 peg codegen)} module. |