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"use strict";
exports.__esModule = true;
exports.SourceLocation = exports.Position = undefined;
exports.getLineInfo = getLineInfo;
var _whitespace = require("./whitespace");
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
// These are used when `options.locations` is on, for the
// `startLoc` and `endLoc` properties.
var Position = exports.Position = function Position(line, col) {
_classCallCheck(this, Position);
this.line = line;
this.column = col;
};
var SourceLocation = exports.SourceLocation = function SourceLocation(start, end) {
_classCallCheck(this, SourceLocation);
this.start = start;
this.end = end;
};
// The `getLineInfo` function is mostly useful when the
// `locations` option is off (for performance reasons) and you
// want to find the line/column position for a given character
// offset. `input` should be the code string that the offset refers
// into.
function getLineInfo(input, offset) {
for (var line = 1, cur = 0;;) {
_whitespace.lineBreakG.lastIndex = cur;
var match = _whitespace.lineBreakG.exec(input);
if (match && match.index < offset) {
++line;
cur = match.index + match[0].length;
} else {
return new Position(line, offset - cur);
}
}
}
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