nitpick, but:
> body returns [Object v] : i_expr
> (same body1=body {$v = cons($i_expr.v, $body1.v);}
> | dedent {$v = list($i_expr.v);} ) ;
The "i_expr" there looks like it's hiding, so I suggest the maybe-clearer:
> body returns [Object v] :
> i_expr
> (same body1=body {$v = cons($i_expr.v, $body1.v);}
> | dedent {$v = list($i_expr.v);} ) ;
(if ANTLR allows it, anyway)
Sincerely,
AmkG
On 1/11/13, David A. Wheeler <dwhee...@dwheeler.com> wrote:
> For completeness, here's the current (and trivial) "body" production.
> Comments welcome, though I can't imagine what they'd be.
>
> This production collects child lines of a parent line until it sees the
> concluding dedent. It's only triggered when there are child lines at all
> (i_expr doesn't call body unless there's an "indent"). Practically all the
> real work is done by its recursing back to i_expr.
>
> The "same" non-terminal doesn't really do anything, it's just a reminder
> that each child has to have the same indentation (which must, by definition,
> be longer than its parents').
>
> --- David A. Wheeler
>
>
> ================================================
>
> // "body" handles the sequence of 1+ child lines in an i_expr
> // (e.g., after a "head"), each of which is itself an i_expr.
> // It returns the list of expressions in the body.
> // Note that an i-expr will consume any line comments or hspaces
> // before it returns back to the "body" production.
> // Non-tokenizing implementation notes:
> // Note that i_expr will consume any line comments (line comments after
> // content, as well as lines that just contain indents and comments).
> // Note also that i-expr may set the the current indent to a different
> value
> // than the indent used on entry to body; the latest indent is compared by
> // the special terminals DEDENT and BADDENT.
>
> body returns [Object v] : i_expr
> (same body1=body {$v = cons($i_expr.v, $body1.v);}
> | dedent {$v = list($i_expr.v);} ) ;
>
>
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