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products/sources/formale Sprachen/Java/Openjdk/src/jdk.jshell/share/classes/jdk/jshell/ (Sun/Oracle ^©) Datei vom 13.11.2022 mit Größe 3 kB

Quelle KeyMap.java Sprache: JAVA

/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.  Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/

package jdk.jshell;

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.stream.Stream;
import jdk.jshell.Key.TypeDeclKey;
import jdk.jshell.Key.ErroneousKey;
import jdk.jshell.Key.ExpressionKey;
import jdk.jshell.Key.ImportKey;
import jdk.jshell.Key.MethodKey;
import jdk.jshell.Key.StatementKey;
import jdk.jshell.Key.VarKey;
import jdk.jshell.Snippet.SubKind;
import static jdk.jshell.Snippet.SubKind.SINGLE_STATIC_IMPORT_SUBKIND;
import static jdk.jshell.Snippet.SubKind.SINGLE_TYPE_IMPORT_SUBKIND;

/**
* Maps signature to Key by Kind.
* @author Robert Field
*/
class KeyMap {
    private final JShell state;

    KeyMap(JShell state) {
        this.state = state;
    }

    private final Map<String, TypeDeclKey> classMap = new LinkedHashMap<>();
    private final Map<String, MethodKey> methodMap = new LinkedHashMap<>();
    private final Map<String, VarKey> varMap = new LinkedHashMap<>();
    private final Map<String, ImportKey> importMap = new LinkedHashMap<>();

    TypeDeclKey keyForClass(String name) {
        return classMap.computeIfAbsent(name, k -> new TypeDeclKey(state, name));
    }

    MethodKey keyForMethod(String name, String parameterTypes) {
        return methodMap.computeIfAbsent(name + ":" + parameterTypes,
                                         k -> new MethodKey(state, name, parameterTypes));
    }

    VarKey keyForVariable(String name) {
        return varMap.computeIfAbsent(name, k -> new VarKey(state, name));
    }

    ImportKey keyForImport(String name, SubKind snippetKind) {
        return importMap.computeIfAbsent(name + ":"
                + ((snippetKind == SINGLE_TYPE_IMPORT_SUBKIND || snippetKind == SINGLE_STATIC_IMPORT_SUBKIND)
                        ? "single"
                        : snippetKind.toString()),
                k -> new ImportKey(state, name, snippetKind));
    }

    StatementKey keyForStatement() {
        return new StatementKey(state);
    }

    ExpressionKey keyForExpression(String name, String type) {
        return new ExpressionKey(state, name, type);
    }

    ErroneousKey keyForErroneous() {
        return new ErroneousKey(state);
    }

    boolean doesVariableNameExist(String name) {
        return varMap.get(name) != null;
    }

    Stream<ImportKey> importKeys() {
        return importMap.values().stream();
    }
}

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