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feat: implement user values

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TopchetoEU 2024-12-09 23:38:53 +02:00
parent b0d8a072aa
commit 3f5e1a5fd8
Signed by: topchetoeu
GPG Key ID: 6531B8583E5F6ED4
2 changed files with 75 additions and 0 deletions
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6
src/main/java/me/topchetoeu/jscript/runtime/values/functions/Arguments.java
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@ -3,6 +3,7 @@ package me.topchetoeu.jscript.runtime.values.functions;
import me.topchetoeu.jscript.common.environment.Environment;
import me.topchetoeu.jscript.runtime.values.Value;
import me.topchetoeu.jscript.runtime.values.primitives.UserValue;
public class Arguments {
public final Value self;
@ -21,6 +22,11 @@ public class Arguments {
public Value self() {
return get(-1);
}
@SuppressWarnings("unchecked")
public <T> T self(Class<T> clazz) {
if (self instanceof UserValue user && clazz.isInstance(user.value)) return (T)user.value;
else return null;
}
public Value get(int i) {
if (i >= args.length || i < -1) return Value.UNDEFINED;
else if (i == -1) return self;

69
src/main/java/me/topchetoeu/jscript/runtime/values/primitives/UserValue.java Normal file
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@ -0,0 +1,69 @@
package me.topchetoeu.jscript.runtime.values.primitives;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Objects;
import java.util.Set;
import me.topchetoeu.jscript.common.environment.Environment;
import me.topchetoeu.jscript.runtime.values.KeyCache;
import me.topchetoeu.jscript.runtime.values.Member;
import me.topchetoeu.jscript.runtime.values.Value;
import me.topchetoeu.jscript.runtime.values.objects.ObjectValue;
import me.topchetoeu.jscript.runtime.values.primitives.numbers.NumberValue;
public final class UserValue<T> extends Value {
public final T value;
public final ObjectValue prototype;
@Override public StringValue type() { return StringValue.of("object"); }
@Override public boolean toBoolean() { return true; }
@Override public NumberValue toNumber(Environment ext) { return NumberValue.NAN; }
@Override public String toString(Environment ext) { return "[user value]"; }
@Override public final boolean defineOwnMember(Environment env, KeyCache key, Member member) { return false; }
@Override public final boolean deleteOwnMember(Environment env, KeyCache key) { return false; }
@Override public final boolean isPrimitive() { return false; }
@Override public final Value toPrimitive(Environment env) { return NumberValue.NAN; }
@Override public final boolean setPrototype(Environment env, ObjectValue val) { return false; }
@Override public Member getOwnMember(Environment env, KeyCache key) { return null; }
@Override public Set<String> getOwnMembers(Environment env, boolean onlyEnumerable) { return new HashSet<>(); }
@Override public Set<SymbolValue> getOwnSymbolMembers(Environment env, boolean onlyEnumerable) { return new HashSet<>(); }
@Override public State getState() { return State.FROZEN; }
@Override public void preventExtensions() {}
@Override public void seal() {}
@Override public void freeze() {}
@Override public int hashCode() {
return value.hashCode();
}
@Override public boolean equals(Object other) {
if (this == other) return true;
else if (other instanceof UserValue val) return Objects.equals(value, val.value);
else return false;
}
@Override public ObjectValue getPrototype(Environment env) { return prototype; }
@Override public List<String> toReadableLines(Environment env, HashSet<ObjectValue> passed) {
return Arrays.asList(value.toString());
}
private UserValue(T value, ObjectValue prototype) {
this.value = value;
this.prototype = prototype;
}
public static <T> UserValue<T> of(T value) {
return new UserValue<T>(value, null);
}
public static <T> UserValue<T> of(T value, ObjectValue prototype) {
return new UserValue<T>(value, prototype);
}
}