diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/robertkrimen/otto/file/file.go')
-rw-r--r-- | Godeps/_workspace/src/github.com/robertkrimen/otto/file/file.go | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/Godeps/_workspace/src/github.com/robertkrimen/otto/file/file.go b/Godeps/_workspace/src/github.com/robertkrimen/otto/file/file.go deleted file mode 100644 index 76524ac39..000000000 --- a/Godeps/_workspace/src/github.com/robertkrimen/otto/file/file.go +++ /dev/null @@ -1,135 +0,0 @@ -// Package file encapsulates the file abstractions used by the ast & parser. -// -package file - -import ( - "fmt" - "strings" -) - -// Idx is a compact encoding of a source position within a file set. -// It can be converted into a Position for a more convenient, but much -// larger, representation. -type Idx int - -// Position describes an arbitrary source position -// including the filename, line, and column location. -type Position struct { - Filename string // The filename where the error occurred, if any - Offset int // The src offset - Line int // The line number, starting at 1 - Column int // The column number, starting at 1 (The character count) - -} - -// A Position is valid if the line number is > 0. - -func (self *Position) isValid() bool { - return self.Line > 0 -} - -// String returns a string in one of several forms: -// -// file:line:column A valid position with filename -// line:column A valid position without filename -// file An invalid position with filename -// - An invalid position without filename -// -func (self *Position) String() string { - str := self.Filename - if self.isValid() { - if str != "" { - str += ":" - } - str += fmt.Sprintf("%d:%d", self.Line, self.Column) - } - if str == "" { - str = "-" - } - return str -} - -// FileSet - -// A FileSet represents a set of source files. -type FileSet struct { - files []*File - last *File -} - -// AddFile adds a new file with the given filename and src. -// -// This an internal method, but exported for cross-package use. -func (self *FileSet) AddFile(filename, src string) int { - base := self.nextBase() - file := &File{ - name: filename, - src: src, - base: base, - } - self.files = append(self.files, file) - self.last = file - return base -} - -func (self *FileSet) nextBase() int { - if self.last == nil { - return 1 - } - return self.last.base + len(self.last.src) + 1 -} - -func (self *FileSet) File(idx Idx) *File { - for _, file := range self.files { - if idx <= Idx(file.base+len(file.src)) { - return file - } - } - return nil -} - -// Position converts an Idx in the FileSet into a Position. -func (self *FileSet) Position(idx Idx) *Position { - position := &Position{} - for _, file := range self.files { - if idx <= Idx(file.base+len(file.src)) { - offset := int(idx) - file.base - src := file.src[:offset] - position.Filename = file.name - position.Offset = offset - position.Line = 1 + strings.Count(src, "\n") - if index := strings.LastIndex(src, "\n"); index >= 0 { - position.Column = offset - index - } else { - position.Column = 1 + len(src) - } - } - } - return position -} - -type File struct { - name string - src string - base int // This will always be 1 or greater -} - -func NewFile(filename, src string, base int) *File { - return &File{ - name: filename, - src: src, - base: base, - } -} - -func (fl *File) Name() string { - return fl.name -} - -func (fl *File) Source() string { - return fl.src -} - -func (fl *File) Base() int { - return fl.base -} |