/ var / www / html / cqt / server / node_modules / joi / lib / [ HOME SHELL ]

Name	Size	Permission	Action
types	[ DIR ]	drwxr-xr-x
annotate.js	5.09 KB	-rwxr-xr-x
base.js	30.69 KB	-rwxr-xr-x
cache.js	2.46 KB	-rwxr-xr-x
common.js	4.81 KB	-rwxr-xr-x
compile.js	7.84 KB	-rwxr-xr-x
errors.js	5.92 KB	-rwxr-xr-x
extend.js	7.34 KB	-rwxr-xr-x
index.d.ts	80.34 KB	-rw-r--r--
index.js	6.76 KB	-rwxr-xr-x
manifest.js	11.5 KB	-rwxr-xr-x
messages.js	4.16 KB	-rwxr-xr-x
modify.js	6.68 KB	-rwxr-xr-x
ref.js	9.93 KB	-rwxr-xr-x
schemas.js	7.92 KB	-rwxr-xr-x
state.js	3.39 KB	-rwxr-xr-x
template.js	10.98 KB	-rwxr-xr-x
trace.js	8.01 KB	-rwxr-xr-x
validator.js	20.54 KB	-rwxr-xr-x
values.js	5.68 KB	-rwxr-xr-x

Code Editor : state.js

'use strict';

const { clone, reach } = require('@hapi/hoek');

const Common = require('./common');

const internals = {
    value: Symbol('value')
};

module.exports = internals.State = class {

constructor(path, ancestors, state) {

this.path = path;
        this.ancestors = ancestors;                 // [parent, ..., root]

this.mainstay = state.mainstay;
        this.schemas = state.schemas;               // [current, ..., root]
        this.debug = null;
    }

localize(path, ancestors = null, schema = null) {

const state = new internals.State(path, ancestors, this);

if (schema &&
            state.schemas) {

state.schemas = [internals.schemas(schema), ...state.schemas];
        }

return state;
    }

nest(schema, debug) {

const state = new internals.State(this.path, this.ancestors, this);
        state.schemas = state.schemas && [internals.schemas(schema), ...state.schemas];
        state.debug = debug;
        return state;
    }

shadow(value, reason) {

this.mainstay.shadow = this.mainstay.shadow || new internals.Shadow();
        this.mainstay.shadow.set(this.path, value, reason);
    }

snapshot() {

if (this.mainstay.shadow) {
            this._snapshot = clone(this.mainstay.shadow.node(this.path));
        }

this.mainstay.snapshot();
    }

restore() {

if (this.mainstay.shadow) {
            this.mainstay.shadow.override(this.path, this._snapshot);
            this._snapshot = undefined;
        }

this.mainstay.restore();
    }

commit() {

if (this.mainstay.shadow) {
            this.mainstay.shadow.override(this.path, this._snapshot);
            this._snapshot = undefined;
        }

this.mainstay.commit();
    }
};

internals.schemas = function (schema) {

if (Common.isSchema(schema)) {
        return { schema };
    }

return schema;
};

internals.Shadow = class {

constructor() {

this._values = null;
    }

set(path, value, reason) {

if (!path.length) {                                     // No need to store root value
            return;
        }

if (reason === 'strip' &&
            typeof path[path.length - 1] === 'number') {        // Cannot store stripped array values (due to shift)

return;
        }

this._values = this._values || new Map();

let node = this._values;
        for (let i = 0; i < path.length; ++i) {
            const segment = path[i];
            let next = node.get(segment);
            if (!next) {
                next = new Map();
                node.set(segment, next);
            }

node = next;
        }

node[internals.value] = value;
    }

get(path) {

const node = this.node(path);
        if (node) {
            return node[internals.value];
        }
    }

node(path) {

if (!this._values) {
            return;
        }

return reach(this._values, path, { iterables: true });
    }

override(path, node) {

if (!this._values) {
            return;
        }

const parents = path.slice(0, -1);
        const own = path[path.length - 1];
        const parent = reach(this._values, parents, { iterables: true });

if (node) {
            parent.set(own, node);
            return;
        }

if (parent) {
            parent.delete(own);
        }
    }
};

Urban Research Lab

Urban Research Lab

The Urban Research Lab (URL) at IIIT-Delhi was established in 2020, during a time when the pandemic brought the complexities of urban life more visible than ever. What started as an initiative by faculty and students has grown into a collaborative space for critically exploring and reimagining the urban questions through research, dialogue, and interdisciplinary engagement.