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Add DynamicFloat class

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This commit is contained in:
AnimeGitB 2022-10-12 21:57:26 +10:30
parent bf8ee32382
commit 558471237a
2 changed files with 115 additions and 1 deletions
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74
src/main/java/emu/grasscutter/data/common/DynamicFloat.java Normal file
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@ -0,0 +1,74 @@
package emu.grasscutter.data.common;
import java.util.List;
import it.unimi.dsi.fastutil.floats.FloatArrayList;
import it.unimi.dsi.fastutil.objects.Object2FloatArrayMap;
import it.unimi.dsi.fastutil.objects.Object2FloatMap;
import lombok.val;
public class DynamicFloat {
public static class StackOp {
enum Op {CONSTANT, KEY, ADD, SUB, MUL, DIV};
public Op op;
public float fValue;
public String sValue;
public StackOp(String s) {
switch (s.toUpperCase()) {
case "ADD" -> this.op = Op.ADD;
case "SUB" -> this.op = Op.SUB;
case "MUL" -> this.op = Op.MUL;
case "DIV" -> this.op = Op.DIV;
default -> {
this.op = Op.KEY;
this.sValue = s;
}
}
}
public StackOp(float f) {
this.op = Op.CONSTANT;
this.fValue = f;
}
}
private List<StackOp> ops;
private boolean dynamic = false;
private float constant = 0f;
public DynamicFloat(float constant) {
this.constant = constant;
}
public DynamicFloat(String key) {
this.dynamic = true;
this.ops = List.of(new StackOp(key));
}
public DynamicFloat(List<StackOp> ops) {
this.dynamic = true;
this.ops = ops;
}
public float get() {
return this.get(new Object2FloatArrayMap<String>());
}
public float get(Object2FloatMap<String> props) {
if (!dynamic)
return constant;
val fl = new FloatArrayList();
for (var op : this.ops) {
switch (op.op) {
case CONSTANT -> fl.push(op.fValue);
case KEY -> fl.push(props.getOrDefault(op.sValue, 0f));
case ADD -> fl.push(fl.popFloat() + fl.popFloat());
case SUB -> fl.push(-fl.popFloat() + fl.popFloat()); // [f0, f1, f2] -> [f0, f1-f2] (opposite of RPN order)
case MUL -> fl.push(fl.popFloat() * fl.popFloat());
case DIV -> fl.push((1f/fl.popFloat()) * fl.popFloat()); // [f0, f1, f2] -> [f0, f1/f2]
}
}
return fl.popFloat(); // well-formed data will always have only one value left at this point
}
}

42
src/main/java/emu/grasscutter/utils/JsonUtils.java
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@ -7,6 +7,7 @@ import java.io.Reader;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
@ -14,10 +15,49 @@ import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.JsonSyntaxException;
import com.google.gson.TypeAdapter;
import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;
import emu.grasscutter.data.common.DynamicFloat;
import lombok.val;
public final class JsonUtils {
static final Gson gson = new GsonBuilder().setPrettyPrinting().create();
// Adapters
static class DynamicFloatAdapter extends TypeAdapter<DynamicFloat> {
@Override
public DynamicFloat read(JsonReader reader) throws IOException {
switch (reader.peek()) {
case STRING:
return new DynamicFloat(reader.nextString());
case NUMBER:
return new DynamicFloat((float) reader.nextDouble());
case BEGIN_ARRAY:
reader.beginArray();
val opStack = new ArrayList<DynamicFloat.StackOp>();
while (reader.hasNext()) {
opStack.add(switch (reader.peek()) {
case STRING -> new DynamicFloat.StackOp(reader.nextString());
case NUMBER -> new DynamicFloat.StackOp((float) reader.nextDouble());
default -> throw new IOException("Invalid DynamicFloat definition - " + reader.peek().name());
});
}
reader.endArray();
return new DynamicFloat(opStack);
default:
throw new IOException("Invalid DynamicFloat definition - " + reader.peek().name());
}
}
@Override
public void write(JsonWriter writer, DynamicFloat f) {};
}
static final Gson gson = new GsonBuilder()
.setPrettyPrinting()
.registerTypeAdapter(DynamicFloat.class, new DynamicFloatAdapter())
.create();
@Deprecated(forRemoval = true)
public static Gson getGsonFactory() {