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var Marker = require('../tokenizer/marker');
function is(value, separator, isSeparatorRegex) {
return isSeparatorRegex
? separator.test(value)
: value === separator;
}
function split(value, separator) {
var openLevel = Marker.OPEN_ROUND_BRACKET;
var closeLevel = Marker.CLOSE_ROUND_BRACKET;
var level = 0;
var cursor = 0;
var lastStart = 0;
var lastValue;
var lastCharacter;
var len = value.length;
var parts = [];
var isSeparatorRegex = typeof (separator) == 'object' && 'exec' in separator;
if (!isSeparatorRegex && value.indexOf(separator) == -1) {
return [value];
}
if (value.indexOf(openLevel) == -1) {
return value.split(separator);
}
while (cursor < len) {
if (value[cursor] == openLevel) {
level++;
} else if (value[cursor] == closeLevel) {
level--;
}
if (level === 0 && cursor > 0 && cursor + 1 < len && is(value[cursor], separator, isSeparatorRegex)) {
parts.push(value.substring(lastStart, cursor));
if (isSeparatorRegex && separator.exec(value[cursor]).length > 1) {
parts.push(value[cursor]);
}
lastStart = cursor + 1;
}
cursor++;
}
if (lastStart < cursor + 1) {
lastValue = value.substring(lastStart);
lastCharacter = lastValue[lastValue.length - 1];
if (is(lastCharacter, separator, isSeparatorRegex)) {
lastValue = lastValue.substring(0, lastValue.length - 1);
}
parts.push(lastValue);
}
return parts;
}
module.exports = split;
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