52 lines
1.5 KiB
Java
52 lines
1.5 KiB
Java
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import org.antlr.v4.runtime.*;
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public class CKEnumCommentsHelper {
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enum CommentsPosition {
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Unknown, Precomment, Postcomment
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}
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public CKEnumCommentsHelper(BufferedTokenStream tokenStream) {
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mTokenStream = tokenStream;
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mCommentsPos = CommentsPosition.Unknown;
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}
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private BufferedTokenStream mTokenStream;
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private CommentsPosition mCommentsPos;
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public String getComment(Token preToken, Token postToken) {
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switch (mCommentsPos) {
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case Unknown: {
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// if we don't know where is our token,
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// we should assume it is from precomment to postcomment
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// and check it.
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Token precomment = CKCommonHelper.getPreChannelToken(mTokenStream, preToken, CKGeneralLexer.COMMENTS);
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if (precomment != null) {
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mCommentsPos = CommentsPosition.Precomment;
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return CKCommonHelper.cutComment(precomment);
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}
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Token postcomment = CKCommonHelper.getPostChannelToken(mTokenStream, postToken, CKGeneralLexer.COMMENTS);
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if (postcomment != null) {
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mCommentsPos = CommentsPosition.Postcomment;
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return CKCommonHelper.cutComment(postcomment);
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}
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// really do not have comment, return empty and keep comment pos
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return null;
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}
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case Precomment: {
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Token comment = CKCommonHelper.getPreChannelToken(mTokenStream, preToken, CKGeneralLexer.COMMENTS);
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return CKCommonHelper.cutComment(comment);
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}
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case Postcomment: {
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Token comment = CKCommonHelper.getPostChannelToken(mTokenStream, postToken, CKGeneralLexer.COMMENTS);
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return CKCommonHelper.cutComment(comment);
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}
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default:
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return null;
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}
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}
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}
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