Function Merge

internal/runtime/compiler/position/position.go:30–52

MergePosition returns the union of two positions such that the result contains both inputs.

(a, b *Position)

// MergePosition returns the union of two positions such that the result contains both inputs.
func Merge(a, b *Position) *Position {
	if a == nil {
		return b
	}
	if b == nil {
		return a
	}
	if a.Filename != b.Filename {
		return a
	}
	// TODO(jaq): handle multi-line positions
	if a.Line != b.Line {
		return a
	}
	r := *a
	if b.Startcol < r.Startcol {
		r.Startcol = b.Startcol
	}
	if b.Endcol > r.Endcol {
		r.Endcol = b.Endcol
	}
	return &r
}