diff options
Diffstat (limited to 'vendor/github.com/alecthomas/chroma/formatter.go')
-rw-r--r-- | vendor/github.com/alecthomas/chroma/formatter.go | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/vendor/github.com/alecthomas/chroma/formatter.go b/vendor/github.com/alecthomas/chroma/formatter.go new file mode 100644 index 000000000..00dd5d8df --- /dev/null +++ b/vendor/github.com/alecthomas/chroma/formatter.go @@ -0,0 +1,43 @@ +package chroma + +import ( + "io" +) + +// A Formatter for Chroma lexers. +type Formatter interface { + // Format returns a formatting function for tokens. + // + // If the iterator panics, the Formatter should recover. + Format(w io.Writer, style *Style, iterator Iterator) error +} + +// A FormatterFunc is a Formatter implemented as a function. +// +// Guards against iterator panics. +type FormatterFunc func(w io.Writer, style *Style, iterator Iterator) error + +func (f FormatterFunc) Format(w io.Writer, s *Style, it Iterator) (err error) { // nolint + defer func() { + if perr := recover(); perr != nil { + err = perr.(error) + } + }() + return f(w, s, it) +} + +type recoveringFormatter struct { + Formatter +} + +func (r recoveringFormatter) Format(w io.Writer, s *Style, it Iterator) (err error) { + defer func() { + if perr := recover(); perr != nil { + err = perr.(error) + } + }() + return r.Formatter.Format(w, s, it) +} + +// RecoveringFormatter wraps a formatter with panic recovery. +func RecoveringFormatter(formatter Formatter) Formatter { return recoveringFormatter{formatter} } |