45 lines
988 B
Go
45 lines
988 B
Go
package scanner
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import "fmt"
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type FilePos struct {
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Filename string // filename, if any
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Offset int // offset, starting at 0
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Line int // line number, starting at 1
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Column int // column number, starting at 1 (byte count)
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}
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func (p FilePos) IsValid() bool {
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return p.Line > 0
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}
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// String returns a string in one of several forms:
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//
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// file:line:column valid position with file name
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// file:line valid position with file name but no column (column == 0)
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// line:column valid position without file name
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// line valid position without file name and no column (column == 0)
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// file invalid position with file name
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// - invalid position without file name
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//
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func (p FilePos) String() string {
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s := p.Filename
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if p.IsValid() {
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if s != "" {
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s += ":"
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}
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s += fmt.Sprintf("%d", p.Line)
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if p.Column != 0 {
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s += fmt.Sprintf(":%d", p.Column)
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}
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}
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if s == "" {
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s = "-"
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}
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return s
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}
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