com.brightsparklabs.asanti.model.schema.DecodingSession Maven / Gradle / Ivy

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package com.brightsparklabs.asanti.model.schema;

import com.brightsparklabs.asanti.model.schema.tag.AsnSchemaTag;

/**
 * An object to store state during the decoding of all the tags in an AsantiAsnData object. This is needed
 * because the ability to map the "raw" tags received from the BER data is dependent on what other
 * data has been received (notably OPTIONAL components of a SEQUENCE)
 */
public interface DecodingSession
{
    /**
     * @param context
     *         a unique string for each level of the hierarchy of a set of tags
     */
    void setContext(String context);

    /**
     * @param tag
     *         the AsnSchemaTag that we want the offset for
     *
     * @return any offset needed to be applied to that index
     */
    int getIndex(AsnSchemaTag tag);

    /**
     * @param tag
     *         the AsnSchemaTag that we want to set the offset for
     * @param index
     *         the value to be returned at the next call to {@code getIndex} with the given
     *         context
     */
    void setIndex(AsnSchemaTag tag, int index);

}