private static void addCompletionVariant(
@NotNull PsiBuilder builder, @NotNull CompletionState completionState, Object o) {
int offset = builder.getCurrentOffset();
if (!builder.eof() && offset == builder.rawTokenTypeStart(1))
return; // suppress for zero-length tokens
boolean add = false;
int diff = completionState.offset - offset;
String text = completionState.convertItem(o);
int length = text == null ? 0 : text.length();
if (length == 0) return;
if (diff == 0) {
add = true;
} else if (diff > 0 && diff <= length) {
CharSequence fragment = builder.getOriginalText().subSequence(offset, completionState.offset);
add = completionState.prefixMatches(fragment.toString(), text);
} else if (diff < 0) {
for (int i = -1; ; i--) {
IElementType type = builder.rawLookup(i);
int tokenStart = builder.rawTokenTypeStart(i);
if (isWhitespaceOrComment(builder, type)) {
diff = completionState.offset - tokenStart;
} else if (type != null && tokenStart < completionState.offset) {
CharSequence fragment =
builder.getOriginalText().subSequence(tokenStart, completionState.offset);
if (completionState.prefixMatches(fragment.toString(), text)) {
diff = completionState.offset - tokenStart;
}
break;
} else break;
}
add = diff >= 0 && diff < length;
}
add =
add
&& length > 1
&& !(text.charAt(0) == '<' && text.charAt(length - 1) == '>')
&& !(text.charAt(0) == '\'' && text.charAt(length - 1) == '\'' && length < 5);
if (add) {
completionState.addItem(builder, text);
}
}
