mirror of https://github.com/webpack/webpack.git
76 lines
3.2 KiB
JavaScript
76 lines
3.2 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 HarmonyExportExpressionDependency = require("./HarmonyExportExpressionDependency");
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const HarmonyExportHeaderDependency = require("./HarmonyExportHeaderDependency");
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const HarmonyExportSpecifierDependency = require("./HarmonyExportSpecifierDependency");
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const HarmonyExportImportedSpecifierDependency = require("./HarmonyExportImportedSpecifierDependency");
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const HarmonyImportDependency = require("./HarmonyImportDependency");
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const HarmonyModulesHelpers = require("./HarmonyModulesHelpers");
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module.exports = class HarmonyExportDependencyParserPlugin {
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apply(parser) {
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parser.plugin("export", statement => {
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const dep = new HarmonyExportHeaderDependency(statement.declaration && statement.declaration.range, statement.range);
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dep.loc = Object.create(statement.loc);
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dep.loc.index = -1;
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parser.state.current.addDependency(dep);
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return true;
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});
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parser.plugin("export import", (statement, source) => {
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const dep = new HarmonyImportDependency(source, HarmonyModulesHelpers.getNewModuleVar(parser.state, source), statement.range);
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dep.loc = Object.create(statement.loc);
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dep.loc.index = -1;
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parser.state.current.addDependency(dep);
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parser.state.lastHarmoryImport = dep;
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return true;
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});
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parser.plugin("export expression", (statement, expr) => {
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const dep = new HarmonyExportExpressionDependency(parser.state.module, expr.range, statement.range);
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dep.loc = Object.create(statement.loc);
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dep.loc.index = -1;
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parser.state.current.addDependency(dep);
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return true;
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});
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parser.plugin("export declaration", statement => {});
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parser.plugin("export specifier", (statement, id, name, idx) => {
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const rename = parser.scope.renames[`$${id}`];
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let dep;
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if(rename === "imported var") {
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const settings = parser.state.harmonySpecifier[`$${id}`];
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dep = new HarmonyExportImportedSpecifierDependency(parser.state.module, settings[0], settings[1], settings[2], name);
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} else {
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const immutable = statement.declaration && isImmutableStatement(statement.declaration);
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const hoisted = statement.declaration && isHoistedStatement(statement.declaration);
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dep = new HarmonyExportSpecifierDependency(parser.state.module, id, name, !immutable || hoisted ? -0.5 : (statement.range[1] + 0.5), immutable);
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}
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dep.loc = Object.create(statement.loc);
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dep.loc.index = idx;
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parser.state.current.addDependency(dep);
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return true;
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});
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parser.plugin("export import specifier", (statement, source, id, name, idx) => {
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const dep = new HarmonyExportImportedSpecifierDependency(parser.state.module, parser.state.lastHarmoryImport, HarmonyModulesHelpers.getModuleVar(parser.state, source), id, name);
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dep.loc = Object.create(statement.loc);
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dep.loc.index = idx;
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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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function isImmutableStatement(statement) {
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if(statement.type === "FunctionDeclaration") return true;
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if(statement.type === "ClassDeclaration") return true;
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if(statement.type === "VariableDeclaration" && statement.kind === "const") return true;
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return false;
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}
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function isHoistedStatement(statement) {
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if(statement.type === "FunctionDeclaration") return true;
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return false;
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}
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