8 type Pos struct {  struct
9 	File string
10 	Off  int // byte offset, starting at 0
11 	Line int // line number, starting at 1
12 	Col  int // column number, starting at 1 (byte count)
33 	Pos Pos  member
41 	Pos  Pos  member
50 	Pos  Pos  member
59 	Pos Pos  member
68 	Pos   Pos  member
78 	Pos    Pos  member
89 	Pos      Pos  member
102 	Pos      Pos  member
119 	Pos    Pos  member
129 	Pos    Pos  member
139 	Pos  Pos  member
155 	Pos  Pos  member
164 	Pos   Pos  member
182 	Pos Pos  member
195 	Pos Pos  member
216 	Pos      Pos  member