mirror of https://github.com/webpack/webpack.git
56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const RequireContextDependency = require("./RequireContextDependency");
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module.exports = class RequireContextDependencyParserPlugin {
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apply(parser) {
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parser.hooks.call.for("require.context").tap("RequireContextDependencyParserPlugin", expr => {
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let regExp = /^\.\/.*$/;
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let recursive = true;
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let mode = "sync";
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switch(expr.arguments.length) {
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case 4:
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{
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const modeExpr = parser.evaluateExpression(expr.arguments[3]);
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if(!modeExpr.isString()) return;
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mode = modeExpr.string;
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}
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// falls through
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case 3:
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{
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const regExpExpr = parser.evaluateExpression(expr.arguments[2]);
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if(!regExpExpr.isRegExp()) return;
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regExp = regExpExpr.regExp;
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}
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// falls through
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case 2:
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{
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const recursiveExpr = parser.evaluateExpression(expr.arguments[1]);
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if(!recursiveExpr.isBoolean()) return;
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recursive = recursiveExpr.bool;
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}
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// falls through
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case 1:
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{
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const requestExpr = parser.evaluateExpression(expr.arguments[0]);
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if(!requestExpr.isString()) return;
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const dep = new RequireContextDependency({
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request: requestExpr.string,
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recursive,
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regExp,
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mode
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}, expr.range);
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dep.loc = expr.loc;
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dep.optional = parser.scope.inTry;
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parser.state.current.addDependency(dep);
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return true;
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}
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}
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});
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}
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};
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