Class MapNode

chassembly/src/main/java/org/quiltmc/chasm/lang/api/ast/MapNode.java:20–139

A map expression, for map creation syntax, e.g. {foo: bar}.

 * A map expression, for map creation syntax, e.g. {@code {foo: bar}}.
 */
public class MapNode extends Node {
    private final Map<String, Node> entries;

    /**
     * Creates a map expression.
     *
     * @see Ast#map()
     */
    public MapNode(Map<String, Node> entries) {
        Assert.check(entries.getClass() != HashMap.class,
                "HashMap given to MapNode, order will be impure!");
        this.entries = entries;
    }

    /**
     * Gets the entries of this map expression.
     */
    public Map<String, Node> getEntries() {
        return entries;
    }

    /**
     * Gets the value associated with the given key, or null if no value was associated.
     */
    @Nullable
    public Node get(String key) {
        return this.entries.get(key);
    }

    /**
     * Sets the value associated with the given key, returning the previous value if present.
     */
    @Nullable
    public Node put(String key, Node value) {
        return this.entries.put(key, value);
    }

    @Override
    public void render(Renderer renderer, StringBuilder builder, int currentIndentationMultiplier) {
        builder.append('{');
        List<Map.Entry<String, Node>> list = new LinkedList<>();
        entries.entrySet().forEach(list::add);
        for (int i = 0; i < list.size(); i++) {
            renderer.indent(builder, currentIndentationMultiplier);
            String key = list.get(i).getKey();
            builder.append(RenderUtil.quotifyIdentifierIfNeeded(key, '"'));
            builder.append(": ");
            list.get(i).getValue().render(renderer, builder, currentIndentationMultiplier + 1);
            if (i < entries.size() - 1 || renderer.hasTrailingCommas()) {
                builder.append(", ");
            }
        }
        if (list.size() > 0) {
            renderer.indent(builder, currentIndentationMultiplier - 1);
        }
        builder.append('}');
    }