diff options
Diffstat (limited to 'vendor/github.com/d5/tengo/compiler/source/file.go')
-rw-r--r-- | vendor/github.com/d5/tengo/compiler/source/file.go | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/vendor/github.com/d5/tengo/compiler/source/file.go b/vendor/github.com/d5/tengo/compiler/source/file.go deleted file mode 100644 index 9e51c9a4..00000000 --- a/vendor/github.com/d5/tengo/compiler/source/file.go +++ /dev/null @@ -1,110 +0,0 @@ -package source - -// File represents a source file. -type File struct { - // File set for the file - set *FileSet - // File name as provided to AddFile - Name string - // Pos value range for this file is [base...base+size] - Base int - // File size as provided to AddFile - Size int - // Lines contains the offset of the first character for each line (the first entry is always 0) - Lines []int -} - -// Set returns FileSet. -func (f *File) Set() *FileSet { - return f.set -} - -// LineCount returns the current number of lines. -func (f *File) LineCount() int { - return len(f.Lines) -} - -// AddLine adds a new line. -func (f *File) AddLine(offset int) { - if i := len(f.Lines); (i == 0 || f.Lines[i-1] < offset) && offset < f.Size { - f.Lines = append(f.Lines, offset) - } -} - -// LineStart returns the position of the first character in the line. -func (f *File) LineStart(line int) Pos { - if line < 1 { - panic("illegal line number (line numbering starts at 1)") - } - - if line > len(f.Lines) { - panic("illegal line number") - } - - return Pos(f.Base + f.Lines[line-1]) -} - -// FileSetPos returns the position in the file set. -func (f *File) FileSetPos(offset int) Pos { - if offset > f.Size { - panic("illegal file offset") - } - - return Pos(f.Base + offset) -} - -// Offset translates the file set position into the file offset. -func (f *File) Offset(p Pos) int { - if int(p) < f.Base || int(p) > f.Base+f.Size { - panic("illegal Pos value") - } - - return int(p) - f.Base -} - -// Position translates the file set position into the file position. -func (f *File) Position(p Pos) (pos FilePos) { - if p != NoPos { - if int(p) < f.Base || int(p) > f.Base+f.Size { - panic("illegal Pos value") - } - - pos = f.position(p) - } - - return -} - -func (f *File) position(p Pos) (pos FilePos) { - offset := int(p) - f.Base - pos.Offset = offset - pos.Filename, pos.Line, pos.Column = f.unpack(offset) - - return -} - -func (f *File) unpack(offset int) (filename string, line, column int) { - filename = f.Name - if i := searchInts(f.Lines, offset); i >= 0 { - line, column = i+1, offset-f.Lines[i]+1 - } - - return -} - -func searchInts(a []int, x int) int { - // This function body is a manually inlined version of: - // return sort.Search(len(a), func(i int) bool { return a[i] > x }) - 1 - i, j := 0, len(a) - for i < j { - h := i + (j-i)/2 // avoid overflow when computing h - // i ≤ h < j - if a[h] <= x { - i = h + 1 - } else { - j = h - } - } - - return i - 1 -} |