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(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
return mod(exports);
if (typeof define == "function" && define.amd) // AMD
return define(["exports"], mod);
mod(tern.comment || (tern.comment = {}));
})(function(exports) {
function isSpace(ch) {
return (ch < 14 && ch > 8) || ch === 32 || ch === 160;
}
function onOwnLine(text, pos) {
for (; pos > 0; --pos) {
var ch = text.charCodeAt(pos - 1);
if (ch == 10) break;
if (!isSpace(ch)) return false;
}
return true;
}
// Gather comments directly before a function
exports.commentsBefore = function(text, pos) {
var found = null, emptyLines = 0, topIsLineComment;
out: while (pos > 0) {
var prev = text.charCodeAt(pos - 1);
if (prev == 10) {
for (var scan = --pos, sawNonWS = false; scan > 0; --scan) {
prev = text.charCodeAt(scan - 1);
if (prev == 47 && text.charCodeAt(scan - 2) == 47) {
if (!onOwnLine(text, scan - 2)) break out;
var content = text.slice(scan, pos);
if (!emptyLines && topIsLineComment) found[0] = content + "\n" + found[0];
else (found || (found = [])).unshift(content);
topIsLineComment = true;
emptyLines = 0;
pos = scan - 2;
break;
} else if (prev == 10) {
if (!sawNonWS && ++emptyLines > 1) break out;
break;
} else if (!sawNonWS && !isSpace(prev)) {
sawNonWS = true;
}
}
} else if (prev == 47 && text.charCodeAt(pos - 2) == 42) {
for (var scan = pos - 2; scan > 1; --scan) {
if (text.charCodeAt(scan - 1) == 42 && text.charCodeAt(scan - 2) == 47) {
if (!onOwnLine(text, scan - 2)) break out;
(found || (found = [])).unshift(text.slice(scan, pos - 2));
topIsLineComment = false;
emptyLines = 0;
break;
}
}
pos = scan - 2;
} else if (isSpace(prev)) {
--pos;
} else {
break;
}
}
return found;
};
exports.commentAfter = function(text, pos) {
while (pos < text.length) {
var next = text.charCodeAt(pos);
if (next == 47) {
var after = text.charCodeAt(pos + 1), end;
if (after == 47) // line comment
end = text.indexOf("\n", pos + 2);
else if (after == 42) // block comment
end = text.indexOf("*/", pos + 2);
else
return;
return text.slice(pos + 2, end < 0 ? text.length : end);
} else if (isSpace(next)) {
++pos;
}
}
};
exports.ensureCommentsBefore = function(text, node) {
if (node.hasOwnProperty("commentsBefore")) return node.commentsBefore;
return node.commentsBefore = exports.commentsBefore(text, node.start);
};
});
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