|
|
- /*
- MIT License http://www.opensource.org/licenses/mit-license.php
- Author Tobias Koppers @sokra
- */
- "use strict";
-
- const RequireResolveDependency = require("./RequireResolveDependency");
- const RequireResolveContextDependency = require("./RequireResolveContextDependency");
- const RequireResolveHeaderDependency = require("./RequireResolveHeaderDependency");
- const ContextDependencyHelpers = require("./ContextDependencyHelpers");
-
- class RequireResolveDependencyParserPlugin {
- constructor(options) {
- this.options = options;
- }
-
- apply(parser) {
- const options = this.options;
-
- const process = (expr, weak) => {
- if (expr.arguments.length !== 1) return;
- const param = parser.evaluateExpression(expr.arguments[0]);
- if (param.isConditional()) {
- for (const option of param.options) {
- const result = processItem(expr, option, weak);
- if (result === undefined) {
- processContext(expr, option, weak);
- }
- }
- const dep = new RequireResolveHeaderDependency(expr.callee.range);
- dep.loc = expr.loc;
- parser.state.current.addDependency(dep);
- return true;
- } else {
- const result = processItem(expr, param, weak);
- if (result === undefined) {
- processContext(expr, param, weak);
- }
- const dep = new RequireResolveHeaderDependency(expr.callee.range);
- dep.loc = expr.loc;
- parser.state.current.addDependency(dep);
- return true;
- }
- };
- const processItem = (expr, param, weak) => {
- if (param.isString()) {
- const dep = new RequireResolveDependency(param.string, param.range);
- dep.loc = expr.loc;
- dep.optional = !!parser.scope.inTry;
- dep.weak = weak;
- parser.state.current.addDependency(dep);
- return true;
- }
- };
- const processContext = (expr, param, weak) => {
- const dep = ContextDependencyHelpers.create(
- RequireResolveContextDependency,
- param.range,
- param,
- expr,
- options,
- {
- mode: weak ? "weak" : "sync"
- },
- parser
- );
- if (!dep) return;
- dep.loc = expr.loc;
- dep.optional = !!parser.scope.inTry;
- parser.state.current.addDependency(dep);
- return true;
- };
-
- parser.hooks.call
- .for("require.resolve")
- .tap("RequireResolveDependencyParserPlugin", expr => {
- return process(expr, false);
- });
- parser.hooks.call
- .for("require.resolveWeak")
- .tap("RequireResolveDependencyParserPlugin", expr => {
- return process(expr, true);
- });
- }
- }
- module.exports = RequireResolveDependencyParserPlugin;
|