aaac7fed
 liuqimichale
add
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const ImportEagerContextDependency = require("./ImportEagerContextDependency");
const ImportWeakDependency = require("./ImportWeakDependency");
const ImportWeakContextDependency = require("./ImportWeakContextDependency");
const ImportLazyOnceContextDependency = require("./ImportLazyOnceContextDependency");
const ImportLazyContextDependency = require("./ImportLazyContextDependency");
const ImportDependenciesBlock = require("./ImportDependenciesBlock");
const ImportEagerDependency = require("./ImportEagerDependency");
const ContextDependencyHelpers = require("./ContextDependencyHelpers");
const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
class ImportParserPlugin {
constructor(options) {
this.options = options;
}
apply(parser) {
const options = this.options;
parser.plugin(["call System.import", "import-call"], (expr) => {
if(expr.arguments.length !== 1)
throw new Error("Incorrect number of arguments provided to 'import(module: string) -> Promise'.");
const param = parser.evaluateExpression(expr.arguments[0]);
let chunkName = null;
let mode = "lazy";
const importOptions = parser.getCommentOptions(expr.range);
if(importOptions) {
if(typeof importOptions.webpackChunkName !== "undefined") {
if(typeof importOptions.webpackChunkName !== "string")
parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackChunkName\` expected a string, but received: ${importOptions.webpackChunkName}.`));
else
chunkName = importOptions.webpackChunkName;
}
if(typeof importOptions.webpackMode !== "undefined") {
if(typeof importOptions.webpackMode !== "string")
parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected a string, but received: ${importOptions.webpackMode}.`));
else
mode = importOptions.webpackMode;
}
}
if(param.isString()) {
if(mode !== "lazy" && mode !== "eager" && mode !== "weak") {
parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected 'lazy', 'eager' or 'weak', but received: ${mode}.`));
}
if(mode === "eager") {
const dep = new ImportEagerDependency(param.string, expr.range);
parser.state.current.addDependency(dep);
} else if(mode === "weak") {
const dep = new ImportWeakDependency(param.string, expr.range);
parser.state.current.addDependency(dep);
} else {
const depBlock = new ImportDependenciesBlock(param.string, expr.range, chunkName, parser.state.module, expr.loc);
parser.state.current.addBlock(depBlock);
}
return true;
} else {
if(mode !== "lazy" && mode !== "lazy-once" && mode !== "eager" && mode !== "weak") {
parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected 'lazy', 'lazy-once', 'eager' or 'weak', but received: ${mode}.`));
}
let Dep = ImportLazyContextDependency;
if(mode === "eager") {
Dep = ImportEagerContextDependency;
} else if(mode === "weak") {
Dep = ImportWeakContextDependency;
} else if(mode === "lazy-once") {
Dep = ImportLazyOnceContextDependency;
}
const dep = ContextDependencyHelpers.create(Dep, expr.range, param, expr, options, chunkName);
if(!dep) return;
dep.loc = expr.loc;
dep.optional = !!parser.scope.inTry;
parser.state.current.addDependency(dep);
return true;
}
});
}
}
module.exports = ImportParserPlugin;
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