source: trip-planner-front/node_modules/webpack/lib/javascript/JavascriptParserHelpers.js@ 571e0df

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Tobias Koppers @sokra
*/

"use strict";

const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
const ConstDependency = require("../dependencies/ConstDependency");
const BasicEvaluatedExpression = require("./BasicEvaluatedExpression");

/** @typedef {import("estree").Expression} ExpressionNode */
/** @typedef {import("estree").Node} Node */
/** @typedef {import("./JavascriptParser")} JavascriptParser */

/**
 * @param {JavascriptParser} parser the parser
 * @param {string} value the const value
 * @param {string[]=} runtimeRequirements runtime requirements
 * @returns {function(ExpressionNode): true} plugin function
 */
exports.toConstantDependency = (parser, value, runtimeRequirements) => {
        return function constDependency(expr) {
                const dep = new ConstDependency(value, expr.range, runtimeRequirements);
                dep.loc = expr.loc;
                parser.state.module.addPresentationalDependency(dep);
                return true;
        };
};

/**
 * @param {string} value the string value
 * @returns {function(ExpressionNode): BasicEvaluatedExpression} plugin function
 */
exports.evaluateToString = value => {
        return function stringExpression(expr) {
                return new BasicEvaluatedExpression().setString(value).setRange(expr.range);
        };
};

/**
 * @param {number} value the number value
 * @returns {function(ExpressionNode): BasicEvaluatedExpression} plugin function
 */
exports.evaluateToNumber = value => {
        return function stringExpression(expr) {
                return new BasicEvaluatedExpression().setNumber(value).setRange(expr.range);
        };
};

/**
 * @param {boolean} value the boolean value
 * @returns {function(ExpressionNode): BasicEvaluatedExpression} plugin function
 */
exports.evaluateToBoolean = value => {
        return function booleanExpression(expr) {
                return new BasicEvaluatedExpression()
                        .setBoolean(value)
                        .setRange(expr.range);
        };
};

/**
 * @param {string} identifier identifier
 * @param {string} rootInfo rootInfo
 * @param {function(): string[]} getMembers getMembers
 * @param {boolean|null=} truthy is truthy, null if nullish
 * @returns {function(ExpressionNode): BasicEvaluatedExpression} callback
 */
exports.evaluateToIdentifier = (identifier, rootInfo, getMembers, truthy) => {
        return function identifierExpression(expr) {
                let evaluatedExpression = new BasicEvaluatedExpression()
                        .setIdentifier(identifier, rootInfo, getMembers)
                        .setSideEffects(false)
                        .setRange(expr.range);
                switch (truthy) {
                        case true:
                                evaluatedExpression.setTruthy();
                                evaluatedExpression.setNullish(false);
                                break;
                        case null:
                                evaluatedExpression.setFalsy();
                                evaluatedExpression.setNullish(true);
                                break;
                        case false:
                                evaluatedExpression.setFalsy();
                                break;
                }

                return evaluatedExpression;
        };
};

exports.expressionIsUnsupported = (parser, message) => {
        return function unsupportedExpression(expr) {
                const dep = new ConstDependency("(void 0)", expr.range, null);
                dep.loc = expr.loc;
                parser.state.module.addPresentationalDependency(dep);
                if (!parser.state.module) return;
                parser.state.module.addWarning(
                        new UnsupportedFeatureWarning(message, expr.loc)
                );
                return true;
        };
};

exports.skipTraversal = () => true;

exports.approve = () => true;