/**
* Method for tracking macro expansions.
*
* @since 5.0
*/
public void expand(
String beforeExpansion,
MacroExpansionTracker tracker,
String filePath,
int lineNumber,
boolean protectDefinedConstructs) {
fImplicitMacroExpansions.clear();
fImageLocationInfos.clear();
fFixedInput = beforeExpansion.toCharArray();
fFixedCurrentFilename = filePath;
fFixedLineNumber = lineNumber;
Lexer lexer = new Lexer(fFixedInput, fLexOptions, fLog, this);
try {
tracker.start(lexer);
Token identifier = lexer.nextToken();
if (identifier.getType() != IToken.tIDENTIFIER) {
tracker.fail();
return;
}
PreprocessorMacro macro = fDictionary.get(identifier.getCharImage());
if (macro == null) {
tracker.fail();
return;
}
lexer.nextToken();
fStartOffset = identifier.getOffset();
fEndOffset = identifier.getEndOffset();
fCompletionMode = false;
IdentityHashMap<PreprocessorMacro, PreprocessorMacro> forbidden =
new IdentityHashMap<PreprocessorMacro, PreprocessorMacro>();
// setup input sequence
TokenSource input = new TokenSource(lexer);
TokenList firstExpansion = new TokenList();
firstExpansion.append(new ExpansionBoundary(macro, true));
expandOne(identifier, macro, forbidden, input, firstExpansion, tracker);
firstExpansion.append(new ExpansionBoundary(macro, false));
input.prepend(firstExpansion);
TokenList result = expandAll(input, forbidden, protectDefinedConstructs, tracker);
tracker.finish(result, fEndOffset);
} catch (OffsetLimitReachedException e) {
}
}
