1 files changed, 121 insertions, 0 deletions
diff --git a/runtime/src/main/java/me/shedaniel/rei/impl/AbstractEntryStack.java b/runtime/src/main/java/me/shedaniel/rei/impl/AbstractEntryStack.java
new file mode 100644
index 000000000..4b8d0ca83
--- /dev/null
+++ b/runtime/src/main/java/me/shedaniel/rei/impl/AbstractEntryStack.java
@@ -0,0 +1,121 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package me.shedaniel.rei.impl;
+
+import com.mojang.blaze3d.vertex.PoseStack;
+import it.unimi.dsi.fastutil.shorts.Short2ObjectMap;
+import it.unimi.dsi.fastutil.shorts.Short2ObjectMaps;
+import it.unimi.dsi.fastutil.shorts.Short2ObjectOpenHashMap;
+import me.shedaniel.math.Point;
+import me.shedaniel.math.Rectangle;
+import me.shedaniel.rei.api.EntryStack;
+import me.shedaniel.rei.api.entry.AbstractRenderer;
+import me.shedaniel.rei.api.entry.ComparisonContext;
+import me.shedaniel.rei.api.entry.EntryStacks;
+import me.shedaniel.rei.api.widgets.Tooltip;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+
+@ApiStatus.Internal
+public abstract class AbstractEntryStack<A> extends AbstractRenderer implements EntryStack<A> {
+    private static final Short2ObjectMap<Object> EMPTY_SETTINGS = Short2ObjectMaps.emptyMap();
+    private Short2ObjectMap<Object> settings = null;
+    
+    @Override
+    public <T> EntryStack<A> setting(Settings<T> settings, T value) {
+        short settingsId = settings.getId();
+        if (this.settings == null)
+            this.settings = Short2ObjectMaps.singleton(settingsId, value);
+        else {
+            if (this.settings.size() == 1) {
+                if (this.settings.containsKey(settingsId)) {
+                    this.settings = Short2ObjectMaps.singleton(settingsId, value);
+                    return this;
+                } else {
+                    Short2ObjectMap<Object> singletonSettings = this.settings;
+                    this.settings = new Short2ObjectOpenHashMap<>(2);
+                    this.settings.putAll(singletonSettings);
+                }
+            }
+            this.settings.put(settingsId, value);
+        }
+        return this;
+    }
+    
+    @Override
+    public <T> EntryStack<A> removeSetting(Settings<T> settings) {
+        if (this.settings != null) {
+            short settingsId = settings.getId();
+            if (this.settings.size() == 1) {
+                if (this.settings.containsKey(settingsId)) {
+                    this.settings = null;
+                }
+            } else if (this.settings.remove(settingsId) != null && this.settings.isEmpty()) {
+                this.settings = null;
+            }
+        }
+        return this;
+    }
+    
+    @Override
+    public EntryStack<A> clearSettings() {
+        this.settings = null;
+        return this;
+    }
+    
+    protected Short2ObjectMap<Object> getSettings() {
+        return this.settings == null ? EMPTY_SETTINGS : this.settings;
+    }
+    
+    @Override
+    public <T> T get(Settings<T> settings) {
+        Object o = this.settings == null ? null : this.settings.get(settings.getId());
+        if (o == null)
+            return settings.getDefaultValue();
+        return (T) o;
+    }
+    
+    @Override
+    public void render(PoseStack matrices, Rectangle bounds, int mouseX, int mouseY, float delta) {
+        this.getDefinition().getRenderer().render(this, matrices, bounds, mouseX, mouseY, delta);
+    }
+    
+    @Override
+    public @Nullable Tooltip getTooltip(Point mouse) {
+        return this.getDefinition().getRenderer().getTooltip(this, mouse);
+    }
+    
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof AbstractEntryStack)) return false;
+        AbstractEntryStack<?> that = (AbstractEntryStack<?>) o;
+        return EntryStacks.equalsExact(this, that);
+    }
+    
+    @Override
+    public int hashCode() {
+        return hash(ComparisonContext.EXACT);
+    }
+}