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routing_tree

1.0.1
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An OTP application

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routing_tree src routing_tree_leex.xrl
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src/routing_tree_leex.xrl 

Definitions.

PathSegment = (_|[a-zA-Z]|[0-9])*

Divider = (\/)



Rules.



{Divider}+      : {token, {'divider', TokenLine}}.

\:{PathSegment} : {token, {'binding', TokenLine, strip(TokenChars)}}.

\[\.\.\.\]      : {token, {'wildcard', TokenLine, '...'}}.

\[              : {token, {'optional_left', TokenLine}}.

\]              : {token, {'optional_right', TokenLine}}.

\?              : {token, {'query_start', TokenLine}}.

\&              : {token, {'ampersand', TokenLine}}.

\=              : {token, {'equals', TokenLine}}.

\#              : {token, {'fragment', TokenLine}}.

{PathSegment}   : {token, {'segment', TokenLine, TokenChars}}.

.               : {error, {unknown_symbol, TokenChars}}.



Erlang code.



strip([$:|Tl]) ->

    Tl;

strip(A) ->

    A.