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rOACCT/node_modules/webpack/lib/javascript/JavascriptParserHelpers.js
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JavascriptParserHelpers.js
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/*
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;
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