ts-simple-ast/dist/utils/StringUtils.js

TypeScript compiler wrapper for AST navigation and code generation.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var errors = require("./../errors");
var StringUtils = /** @class */ (function () {
    function StringUtils() {
    }
    StringUtils.isNullOrWhitespace = function (str) {
        return typeof str !== "string" || str.trim().length === 0;
    };
    StringUtils.repeat = function (str, times) {
        var newStr = "";
        for (var i = 0; i < times; i++)
            newStr += str;
        return newStr;
    };
    StringUtils.startsWith = function (str, startsWithString) {
        return str.substr(0, startsWithString.length) === startsWithString;
    };
    StringUtils.endsWith = function (str, endsWithString) {
        return str.substr(str.length - endsWithString.length, endsWithString.length) === endsWithString;
    };
    StringUtils.getLineNumberFromPos = function (str, pos) {
        errors.throwIfOutOfRange(pos, [0, str.length + 1], "pos");
        // do not allocate a string in this method
        var count = 0;
        for (var i = 0; i < pos; i++) {
            if (str[i] === "\n" || (str[i] === "\r" && str[i + 1] !== "\n"))
                count++;
        }
        return count + 1; // convert count to line number
    };
    return StringUtils;
}());
exports.StringUtils = StringUtils;