eini_lexer.xrl

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%% @author: shino@accense.com

Definitions.

K = [a-z][a-zA-Z0-9_\.]*
V = [a-z][a-zA-Z0-9_\.]*
S = [\s\t]
B = [\n\r]

Rules.

%% skip comment line,which has ; at the beginning of line
{B};.*{B}        : {skip_token, "\n"}.

%% skip empty lines or lines with space/tab chars
{B}{S}*{B}       : {skip_token, "\n"}.

%% mark line break by token 'break' in order to use as delimiters
{B}              : {token, {break,   TokenLine, TokenChars}}.

%% Just chars
=                : {token, {'=',     TokenLine}}.
\[               : {token, {'[',     TokenLine}}.
\]               : {token, {']',     TokenLine}}.

%% word-like tokens
{S}+             : {token, {blank,   TokenLine, TokenChars}}.
"{K}"            : {token, {quoted,  TokenLine, TokenChars}}.
{K}              : {token, {word,    TokenLine, TokenChars}}.
{V}              : {token, {value,   TokenLine, TokenChars}}.

%% comment-like token, but may be a part of value depending on the location
;.*              : {token, {comment, TokenLine, TokenChars}}.

Erlang code.