110 lines
3.5 KiB
Java
110 lines
3.5 KiB
Java
package io.gitlab.jfronny.muscript.data.dynamic;
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import io.gitlab.jfronny.commons.StringFormatter;
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import io.gitlab.jfronny.muscript.StandardLib;
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import io.gitlab.jfronny.muscript.ast.DynamicExpr;
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import io.gitlab.jfronny.muscript.ast.Expr;
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import io.gitlab.jfronny.muscript.compiler.ExprWriter;
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import io.gitlab.jfronny.muscript.compiler.Parser;
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import io.gitlab.jfronny.muscript.data.dynamic.additional.*;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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import java.io.IOException;
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/**
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* Represents a value of an unknown type
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* Override toString(StringBuilder) to support custom serialization (note: the serialized form is ran with muScript to generate the tree)
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* @param <T> the type represented
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*/
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public sealed interface Dynamic<T> permits DBool, DCallable, DList, DNull, DNumber, DObject, DString, DynamicBase {
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/**
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* Deserialize simply dynamic values. DOES NOT SUPPORT CALLABLES!
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* Use Parser.parse() if you truly need to deserialize them, but be aware that that might enable DOS attacks
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*/
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static Dynamic<?> deserialize(String source) {
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DynamicExpr expr = Parser.parse(source).asDynamicExpr();
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if (!DirectPreconditionVisitor.visit(expr)) throw new IllegalArgumentException("This expression does not directly express a dynamic and may not be loaded this way");
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return expr.get(StandardLib.createScope());
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}
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static String serialize(Dynamic<?> dynamic) {
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StringBuilder sb = new StringBuilder();
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try (ExprWriter ew = new ExprWriter(sb, true)) {
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dynamic.serialize(ew);
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} catch (IOException e) {
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throw new RuntimeException("Could not stringify", e);
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}
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return sb.toString();
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}
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static boolean isNull(Dynamic<?> dynamic) {
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return dynamic == null || dynamic instanceof DNull;
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}
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static @NotNull Dynamic<?> fromNullable(@Nullable Dynamic<?> dynamic) {
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return dynamic == null ? new DNull() : dynamic;
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}
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default void serialize(ExprWriter writer) throws IOException {
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toExpr().decompile(writer);
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}
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Expr<?> toExpr();
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T getValue();
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default boolean isBool() {
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return this instanceof DBool;
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}
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default DBool asBool() {
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if (this instanceof DBool bool) return bool;
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else throw new DynamicTypeConversionException("bool", this);
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}
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default boolean isNumber() {
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return this instanceof DNumber;
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}
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default DNumber asNumber() {
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if (this instanceof DNumber number) return number;
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else throw new DynamicTypeConversionException("number", this);
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}
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default boolean isString() {
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return this instanceof DString;
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}
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default DString asString() {
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if (this instanceof DString string) return string;
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else return DFinal.of(StringFormatter.toString(getValue()));
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}
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default boolean isObject() {
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return this instanceof DObject;
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}
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default DObject asObject() {
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if (this instanceof DObject object) return object;
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else throw new DynamicTypeConversionException("object", this);
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}
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default boolean isList() {
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return this instanceof DList;
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}
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default DList asList() {
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if (this instanceof DList list) return list;
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else throw new DynamicTypeConversionException("list", this);
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}
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default boolean isCallable() {
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return this instanceof DCallable;
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}
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default DCallable asCallable() {
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if (this instanceof DCallable callable) return callable;
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else throw new DynamicTypeConversionException("callable", this);
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}
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}
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