1 files changed, 62 insertions, 0 deletions
diff --git a/vendor/github.com/mmcloughlin/avo/src/src.go b/vendor/github.com/mmcloughlin/avo/src/src.go
new file mode 100644
index 0000000..3a47886
--- /dev/null
+++ b/vendor/github.com/mmcloughlin/avo/src/src.go
@@ -0,0 +1,62 @@
+// Package src provides types for working with source files.
+package src
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"strconv"
+)
+
+// Position represents a position in a source file.
+type Position struct {
+	Filename string
+	Line     int // 1-up
+}
+
+// FramePosition returns the Position of the given stack frame.
+func FramePosition(f runtime.Frame) Position {
+	return Position{
+		Filename: f.File,
+		Line:     f.Line,
+	}
+}
+
+// IsValid reports whether the position is valid: Line must be positive, but
+// Filename may be empty.
+func (p Position) IsValid() bool {
+	return p.Line > 0
+}
+
+// String represents Position as a string.
+func (p Position) String() string {
+	if !p.IsValid() {
+		return "-"
+	}
+	var s string
+	if p.Filename != "" {
+		s += p.Filename + ":"
+	}
+	s += strconv.Itoa(p.Line)
+	return s
+}
+
+// Rel returns Position relative to basepath. If the given filename cannot be
+// expressed relative to basepath the position will be returned unchanged.
+func (p Position) Rel(basepath string) Position {
+	q := p
+	if rel, err := filepath.Rel(basepath, q.Filename); err == nil {
+		q.Filename = rel
+	}
+	return q
+}
+
+// Relwd returns Position relative to the current working directory. Returns p
+// unchanged if the working directory cannot be determined, or the filename
+// cannot be expressed relative to the working directory.
+func (p Position) Relwd() Position {
+	if wd, err := os.Getwd(); err == nil {
+		return p.Rel(wd)
+	}
+	return p
+}