protected static IASTNode findEnclosingNode(IFortranAST ast, ITextSelection selection) {
Token firstToken = findFirstTokenAfter(ast, selection.getOffset());
Token lastToken =
findLastTokenBefore(
ast, OffsetLength.getPositionPastEnd(selection.getOffset(), selection.getLength()));
if (firstToken == null || lastToken == null) return null;
for (IASTNode parent = lastToken.getParent(); parent != null; parent = parent.getParent())
if (contains(parent, firstToken)) return parent;
return null;
}
protected static boolean nodeExactlyEnclosesRegion(
IASTNode node, IFortranAST ast, ITextSelection selection) {
Token firstInNode = node.findFirstToken();
Token lastInNode = node.findLastToken();
Token firstInSel = findFirstTokenAfter(ast, selection.getOffset());
Token lastInSel =
findLastTokenBefore(
ast, OffsetLength.getPositionPastEnd(selection.getOffset(), selection.getLength()));
return firstInNode != null
&& lastInNode != null
&& firstInSel != null
&& lastInSel != null
&& firstInNode == firstInSel
&& lastInNode == lastInSel;
}
protected static Token findEnclosingToken(IFortranAST ast, final ITextSelection selection) {
Token prevToken = null;
for (Token token : new IterableWrapper<Token>(ast)) {
if (OffsetLength.contains(
token.getFileOffset(), token.getLength(),
selection.getOffset(), selection.getLength())) {
String tokenText = token.getText();
// If we get whitespace, that means we want the previous token (cursor was put AFTER
// the identifier we want to rename
if (tokenText.length() == 1 && Character.isWhitespace(tokenText.charAt(0))) {
return prevToken;
} else return token;
}
prevToken = token;
}
return null;
}