Method ClearUnusedIDs

common/ast/ast.go:176–183

ClearUnusedIDs removes IDs not used in the AST or macro calls from SourceInfo.

()

// ClearUnusedIDs removes IDs not used in the AST or macro calls from SourceInfo.
func (a *AST) ClearUnusedIDs() {
	ids := a.IDs()
	for id := range a.SourceInfo().OffsetRanges() {
		if !ids[id] {
			a.SourceInfo().ClearOffsetRange(id)
		}
	}
}

// Heights computes the heights of all AST expressions and returns a map from expression id to height.
func Heights(a *AST) map[int64]int {