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Truffle is a multi-language framework for executing dynamic languages that achieves high performance when combined with Graal.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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package com.oracle.truffle.polyglot;

import org.graalvm.options.OptionCategory;
import org.graalvm.options.OptionKey;
import org.graalvm.options.OptionStability;

import com.oracle.truffle.api.Option;

@Option.Group(PolyglotEngineImpl.OPTION_GROUP_ENGINE)
final class PolyglotEngineOptions {
    static final String PREINITIALIZE_CONTEXT_NAME = "PreinitializeContexts";
    private static final String INSTRUMENT_EXCEPTIONS_ARE_THROWN_NAME = "InstrumentExceptionsAreThrown";

    @Option(name = PREINITIALIZE_CONTEXT_NAME, category = OptionCategory.EXPERT, deprecated = true, help = "Preinitialize language contexts for given languages.")//
    static final OptionKey PreinitializeContexts = new OptionKey<>("");

    /**
     * When the option is set the exceptions thrown by instruments are propagated rather than logged
     * into err.
     */
    @Option(name = INSTRUMENT_EXCEPTIONS_ARE_THROWN_NAME, category = OptionCategory.INTERNAL, help = "Propagates exceptions thrown by instruments.")//
    static final OptionKey InstrumentExceptionsAreThrown = new OptionKey<>(false);

    @Option(category = OptionCategory.INTERNAL, stability = OptionStability.EXPERIMENTAL, help = "Show internal frames specific to the language implementation in stack traces.")//
    static final OptionKey ShowInternalStackFrames = new OptionKey<>(false);

    @Option(category = OptionCategory.INTERNAL, stability = OptionStability.EXPERIMENTAL, help = "Enables conservative context references. " +
                    "This allows invalid sharing between contexts. " +
                    "For testing purposes only.")//
    static final OptionKey UseConservativeContextReferences = new OptionKey<>(false);

    @Option(category = OptionCategory.INTERNAL, stability = OptionStability.EXPERIMENTAL, help = "Enables specialization statistics for nodes generated with Truffle DSL and prints the result on exit. " +
                    "In order for this flag to be functional -Atruffle.dsl.GenerateSpecializationStatistics=true needs to be set at build time." + //
                    "Enabling this flag and the compiler option has major implications on the performance and footprint of the interpreter." + //
                    "Do not use in production environments.")//
    static final OptionKey SpecializationStatistics = new OptionKey<>(false);
}