Design¶

FIXME: Write up design.

Interface¶

The core routine of LibFormat is reformat():

tooling::Replacements reformat(const FormatStyle &Style, Lexer &Lex,
                               SourceManager &SourceMgr,
                               std::vector<CharSourceRange> Ranges);

This reads a token stream out of the lexer Lex and reformats all the code ranges in Ranges. The FormatStyle controls basic decisions made during formatting. A list of options can be found under Style Options.

Style Options¶

The style options describe specific formatting options that can be used in order to make ClangFormat comply with different style guides. Currently, two style guides are hard-coded:

/// \brief Returns a format style complying with the LLVM coding standards:
/// http://llvm.org/docs/CodingStandards.html.
FormatStyle getLLVMStyle();

/// \brief Returns a format style complying with Google's C++ style guide:
/// http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml.
FormatStyle getGoogleStyle();

These options are also exposed in the standalone tools through the -style option.

In the future, we plan on making this configurable.