hu.bme.mit.theta.common.dsl.SymbolTable Maven / Gradle / Ivy

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Common subproject in the Theta model checking framework

There is a newer version: 6.5.2

/*
 *  Copyright 2024 Budapest University of Technology and Economics
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package hu.bme.mit.theta.common.dsl;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;

import java.util.LinkedHashMap;
import java.util.Optional;
import java.util.StringJoiner;

public final class SymbolTable {

    private final LinkedHashMap stringToSymbol;

    public SymbolTable() {
        stringToSymbol = new LinkedHashMap<>();
    }

    ////

    public void add(final Symbol symbol) {
        checkNotNull(symbol);
        checkArgument(!stringToSymbol.containsKey(symbol.getName()),
                String.format("Symbol %s is already declared in this scope", symbol.getName()));
        stringToSymbol.put(symbol.getName(), symbol);
    }

    public void addAll(final Iterable symbols) {
        checkNotNull(symbols);
        for (final Symbol symbol : symbols) {
            add(symbol);
        }
    }

    public Optional get(final String name) {
        final Symbol symbol = stringToSymbol.get(name);
        return Optional.ofNullable(symbol);
    }

    @Override
    public String toString() {
        final StringJoiner sj = new StringJoiner(", ", "SymbolTable(", ")");
        for (final Symbol symbol : stringToSymbol.values()) {
            sj.add(symbol.toString());
        }
        return sj.toString();
    }

}