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An interpreter and JIT compiler for a subset of Molang

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package net.hollowcube.mql;

import net.hollowcube.mql.parser.MqlParser;
import net.hollowcube.mql.runtime.MqlScope;
import net.hollowcube.mql.tree.MqlExpr;
import net.hollowcube.mql.tree.MqlNumberExpr;
import net.hollowcube.mql.value.MqlNumberValue;
import net.hollowcube.mql.value.MqlValue;
import org.jetbrains.annotations.NotNull;

public record MqlScript(@NotNull MqlExpr expr) {

    public static @NotNull MqlScript parse(@NotNull String script) {
        if (script.trim().isEmpty()) // Empty script is always the number 1
            return new MqlScript(new MqlNumberExpr(1));
        MqlExpr expr = new MqlParser(script).parse();
        return new MqlScript(expr);
    }

    public double evaluate(@NotNull MqlScope scope) {
        MqlValue result = expr().evaluate(scope);
        if (result instanceof MqlNumberValue num)
            return num.value();
        return 0.0;
    }

    public boolean evaluateToBool(@NotNull MqlScope scope) {
        MqlValue result = expr().evaluate(scope);
        if (result instanceof MqlNumberValue num)
            return num.value() != 0;
        return result != MqlValue.NULL;
    }

}