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better tester; yet another iterator bugfix

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Araq 2011-01-06 22:21:44 +01:00
commit 45862e58a7
6 changed files with 116 additions and 71 deletions
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8
doc/pegdocs.txt
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@ -97,6 +97,10 @@ macro meaning
``\n`` any newline combination: ``\10 / \13\10 / \13``
``\i`` ignore case for matching; use this at the start of the PEG
``\y`` ignore style for matching; use this at the start of the PEG
``\skip`` pat skip pattern *pat* before trying to match other tokens;
this is useful for whitespace skipping, for example:
``\skip(\s*) {\ident} ':' {\ident}`` matches key value
pairs ignoring whitespace around the ``':'``.
``\ident`` a standard ASCII identifier: ``[a-zA-Z_][a-zA-Z_0-9]*``
``\letter`` any Unicode letter
``\upper`` any Unicode uppercase letter
@ -198,8 +202,8 @@ As a regular expression ``\[.*\]`` matches the longest possible text between
deterministic: ``.*`` consumes the rest of the input, so ``\]`` never matches.
As a PEG this needs to be written as: ``\[ ( !\] . )* \]`` (or ``\[ @ \]``).
Note that the regular expression does not behave as intended either:
``*`` should not be greedy, so ``\[.*?\]`` should be used.
Note that the regular expression does not behave as intended either: in the
example ``*`` should not be greedy, so ``\[.*?\]`` should be used instead.
PEG construction