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package com.oracle.js.parser.ir;

Interface implemented by all nodes that have flags in a lexical context. This is needed as we
sometimes have to save the setting of flags in the lexical context until a block is completely
finished and its final version (after multiple copy on writes) is placed in the lexical context
Type parameters:
<T> – lexical context node that can have flags set during code generation/**
 * Interface implemented by all nodes that have flags in a lexical context. This is needed as we
 * sometimes have to save the setting of flags in the lexical context until a block is completely
 * finished and its final version (after multiple copy on writes) is placed in the lexical context
 *
 * @param <T> lexical context node that can have flags set during code generation
 */
public interface Flags<T extends LexicalContextNode> {

    
Get all flags of a LexicalContextNode
Returns:
flags/**
     * Get all flags of a LexicalContextNode
     *
     * @return flags
     */
    int getFlags();

    
Check if a flag is set in a lexical context node
Params:
flag – flag to check
Returns:
flags/**
     * Check if a flag is set in a lexical context node
     *
     * @param flag flag to check
     * @return flags
     */
    boolean getFlag(int flag);

    
Set a flag of a LexicalContextNode
Params:
lc – lexical context
flag – flag to set
Returns:
the new LexicalContext node if flags were changed, same otherwise/**
     * Set a flag of a LexicalContextNode
     *
     * @param lc lexical context
     * @param flag flag to set
     * @return the new LexicalContext node if flags were changed, same otherwise
     */
    T setFlag(final LexicalContext lc, int flag);

    
Set all flags of a LexicalContextNode, overwriting previous flags
Params:
lc – lexical context
flags – new flags value
Returns:
the new LexicalContext node if flags were changed, same otherwise/**
     * Set all flags of a LexicalContextNode, overwriting previous flags
     *
     * @param lc lexical context
     * @param flags new flags value
     * @return the new LexicalContext node if flags were changed, same otherwise
     */
    T setFlags(final LexicalContext lc, int flags);
}