--- Ralf Junker <[EMAIL PROTECTED]> wrote:
> article ::= blocks.
>
> blocks ::= block.
> blocks ::= blocks block.
>
> block ::= heading.
> block ::= paragraph.
>
> heading ::= HEADING_START text HEADING_END.
> heading ::= HEADING_START text.
> heading ::= HEADING_START.
>
> paragraph ::= text NEWLINE.
> paragraph ::= paragraph text NEWLINE.
> paragraph ::= text.
> paragraph ::= paragraph text.
>
> text ::= textpiece.
> text ::= text textpiece.
>
> textpiece ::= TEXT.
> textpiece ::= LINK.
Your grammar is ambiguous. The text tokens run together for
various rules because the grammar lacks clear separators between
them. You can fix it a million ways by altering your grammar.
Here is one way:
article ::= blocks.
blocks ::= block.
blocks ::= blocks block.
block ::= heading.
block ::= paragraph.
heading ::= HEADING_START text HEADING_END.
heading ::= HEADING_START text.
heading ::= HEADING_START.
paragraph ::= PARA text.
text ::= textpiece.
text ::= text textpiece.
textpiece ::= TEXT.
textpiece ::= LINK.
Here's another:
article ::= blocks.
blocks ::= block.
blocks ::= blocks block.
block ::= heading NEWLINE.
block ::= paragraph NEWLINE.
heading ::= HEADING_START text HEADING_END.
heading ::= HEADING_START text.
heading ::= HEADING_START.
paragraph ::= text.
text ::= textpiece.
text ::= text textpiece.
textpiece ::= TEXT.
textpiece ::= LINK.
Lemon generates an .out file for the .y file processed.
You can examine it for errors.
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