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