PhutilSimpleOptionsLexer.php
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	<?php

	/**
	* Lexer for simple options, like:
	*
	* eyes=2, legs=4
	*
	* Values may be quoted and escaped:
	*
	* eyes="one, or two", legs="{^,\",^}"
	*
	* @group lexer
	*/
	final class PhutilSimpleOptionsLexer extends PhutilLexer {

	public function getNiceTokens($input) {
	$tokens = $this->getTokens($input);

	foreach ($tokens as $key => $token) {
	list($type, $value) = $token;
	switch ($type) {
	case 'esc':
	$tokens[$key][0] = 'word';
	$tokens[$key][1] = substr($value, 1);
	break;
	}
	}

	$tokens = $this->mergeTokens($tokens);

	// NOTE: Strip these only after merging tokens, so "a b" merges into two
	// words, "a" and "b", not a single "ab" word.
	foreach ($tokens as $key => $token) {
	list($type, $value) = $token;
	switch ($type) {
	case "'":
	case '"':
	case ' ':
	unset($tokens[$key]);
	break;
	}
	}

	return array_values($tokens);
	}

	protected function getRawRules() {
	return array(
	'start' => array(
	array('\s+', ' '),
	array("'", "'", 'string1'),
	array('"', '"', 'string2'),
	array(',', ','),
	array('=', '='),
	array('[^\\s\'"=,]+', 'word'),
	),
	'string1' => array(
	array('[^\'\\\\]+', 'word'),
	array("'", "'", '!pop'),
	array('\\\\.', 'esc'),
	),
	'string2' => array(
	array('[^"\\\\]+', 'word'),
	array('"', '"', '!pop'),
	array('\\\\.', 'esc'),
	),
	);
	}
	}