123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778 |
- 'use strict';
- var common = require('./common');
- function Mark(name, buffer, position, line, column) {
- this.name = name;
- this.buffer = buffer;
- this.position = position;
- this.line = line;
- this.column = column;
- }
- Mark.prototype.getSnippet = function getSnippet(indent, maxLength) {
- var head, start, tail, end, snippet;
- if (!this.buffer) {
- return null;
- }
- indent = indent || 4;
- maxLength = maxLength || 75;
- head = '';
- start = this.position;
- while (start > 0 && -1 === '\x00\r\n\x85\u2028\u2029'.indexOf(this.buffer.charAt(start - 1))) {
- start -= 1;
- if (this.position - start > (maxLength / 2 - 1)) {
- head = ' ... ';
- start += 5;
- break;
- }
- }
- tail = '';
- end = this.position;
- while (end < this.buffer.length && -1 === '\x00\r\n\x85\u2028\u2029'.indexOf(this.buffer.charAt(end))) {
- end += 1;
- if (end - this.position > (maxLength / 2 - 1)) {
- tail = ' ... ';
- end -= 5;
- break;
- }
- }
- snippet = this.buffer.slice(start, end);
- return common.repeat(' ', indent) + head + snippet + tail + '\n' +
- common.repeat(' ', indent + this.position - start + head.length) + '^';
- };
- Mark.prototype.toString = function toString(compact) {
- var snippet, where = '';
- if (this.name) {
- where += 'in "' + this.name + '" ';
- }
- where += 'at line ' + (this.line + 1) + ', column ' + (this.column + 1);
- if (!compact) {
- snippet = this.getSnippet();
- if (snippet) {
- where += ':\n' + snippet;
- }
- }
- return where;
- };
- module.exports = Mark;
|