typescript-closure-tools/definition-generator/src/pretty_print.js

Command-line tools to convert closure-style JSDoc annotations to typescript, and to convert typescript sources to closure externs files

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const main = require("./main");
const finder = require("./finder");
const options = require("./options");
function common_prefix(x, y) {
    var n = 0;
    while (n < x.length && n < y.length && x.charAt(n) === y.charAt(n))
        n++;
    while (n > 0 && x.charAt(n - 1) !== '/')
        n--;
    return x.substring(0, n);
}
function drop_prefix(value, prefix) {
    if (value.substring(0, prefix.length) === prefix)
        return value.substring(prefix.length);
    else
        return value;
}
function unique(values) {
    var acc = {};
    values.forEach(name => acc[name] = true);
    return Object.keys(acc);
}
function pretty(out) {
    var acc = '';
    function emit_reference(filePath) {
        if (filePath && filePath !== main.currentInput) {
            var reference = drop_prefix(filePath, options.inputRoot);
            var output = drop_prefix(main.currentOutput, options.outputRoot);
            var common = common_prefix(reference, output);
            reference = drop_prefix(reference, common);
            output = drop_prefix(output, common);
            var goUp = output
                .split('/')
                .slice(1)
                .map(_ => '..')
                .join('/');
            if (goUp === '')
                goUp = '.';
            acc += '/// <reference path="' + goUp + '/' + reference + '" />\n';
        }
    }
    function change_extension(filePath) {
        if (filePath && filePath.substring(filePath.length - 3) === '.js')
            return filePath.substring(0, filePath.length - 3) + '.d.ts';
        else
            return filePath;
    }
    if (options.globals)
        emit_reference(options.globals);
    var files = out.references
        .map(finder.file)
        .filter(file => file !== null);
    unique(files).filter(file => file !== main.currentInput)
        .map(change_extension)
        .forEach(emit_reference);
    // TODO substitute goog.string
    // TODO break static imports
    Object.keys(out.modules).forEach(moduleName => {
        // TODO eliminate when https://typescript.codeplex.com/workitem/2490 is resolved
        var safeName = moduleName.replace(/\bstring\b/, '_string');
        var moduleValue = out.modules[moduleName];
        acc += '\ndeclare module ' + safeName + ' {\n';
        Object.keys(moduleValue).forEach(function (propertyName) {
            var member = moduleValue[propertyName];
            member = member.replace(/\n/g, '\n    ');
            acc += '\n    ' + member + '\n';
        });
        acc += '}\n';
    });
    return acc;
}
exports.pretty = pretty;