CraftTweaker/MineTweaker3-MC1102-Mod-IC2/src/main/java/minetweaker/mods/ic2/IC2BracketHandler.java

package minetweaker.mods.ic2;

import ic2.api.item.IC2Items;
import minetweaker.*;
import minetweaker.annotations.*;
import minetweaker.api.item.IItemStack;
import net.minecraft.item.ItemStack;
import net.minecraftforge.oredict.OreDictionary;
import stanhebben.zenscript.ZenTokener;
import stanhebben.zenscript.compiler.IEnvironmentGlobal;
import stanhebben.zenscript.expression.*;
import stanhebben.zenscript.expression.partial.IPartialExpression;
import stanhebben.zenscript.parser.Token;
import stanhebben.zenscript.symbols.IZenSymbol;
import stanhebben.zenscript.type.ZenType;
import stanhebben.zenscript.type.natives.IJavaMethod;
import stanhebben.zenscript.util.ZenPosition;

import java.util.List;

import static minetweaker.api.minecraft.MineTweakerMC.getIItemStack;

/**
 * Makes a ic2-item specific item syntax available in the form <item-ic2:name[:meta]>.
 *
 * @author Stan Hebben
 */
@BracketHandler
@ModOnly("IC2")
public class IC2BracketHandler implements IBracketHandler {

    private final IJavaMethod method;

    public IC2BracketHandler() {
        method = MineTweakerAPI.getJavaMethod(IC2BracketHandler.class, "getItem", String.class, int.class);
    }

    public static IItemStack getItem(String name, int meta) {
        ItemStack stack = IC2Items.getItem(name);
        stack.setItemDamage(meta);
        return getIItemStack(stack);
    }

    @Override
    public IZenSymbol resolve(IEnvironmentGlobal environment, List<Token> tokens) {
        if(tokens.size() >= 5) {
            if(tokens.get(0).getValue().equals("ic2") && tokens.get(1).getValue().equals("-") && tokens.get(2).getValue().equals("item") && tokens.get(3).getValue().equals(":")) {
                String name = tokens.get(4).getValue();
                int meta = 0;
                if(tokens.size() > 6 && tokens.get(5).getValue().equals(":")) {
                    if(tokens.get(6).getType() == ZenTokener.T_INTVALUE) {
                        meta = Integer.parseInt(tokens.get(6).getValue());
                    } else if(tokens.get(6).getValue().equals("*")) {
                        meta = OreDictionary.WILDCARD_VALUE;
                    } else {
                        MineTweakerAPI.logError("Not a valid meta value: " + tokens.get(6).getValue());
                    }
                }
                ItemStack item = IC2Items.getItem(name);
                if(item == null) {
                    MineTweakerAPI.logError("Not a valid IC2 item: " + name);
                    return null;
                } else {
                    return new ItemReferenceSymbol(environment, name, meta);
                }
            } else {
                return null;
            }
        } else {
            return null;
        }
    }

    // #############################
    // ### Private inner classes ###
    // #############################

    private class ItemReferenceSymbol implements IZenSymbol {

        private final IEnvironmentGlobal environment;
        private final String name;
        private final int meta;

        public ItemReferenceSymbol(IEnvironmentGlobal environment, String name, int meta) {
            this.environment = environment;
            this.name = name;
            this.meta = meta;
        }

        @Override
        public IPartialExpression instance(ZenPosition position) {
            return new ExpressionCallStatic(position, environment, method, new ExpressionString(position, name), new ExpressionInt(position, meta, ZenType.INT));
        }
    }
}