예제 #1
0
// findVisibleConsts returns a mapping from each package-level constant assignable to type "error", to nil.
func findVisibleConsts(prog *ssa.Program, qpos *QueryPos) map[ssa.Const]*ssa.NamedConst {
	constants := make(map[ssa.Const]*ssa.NamedConst)
	for _, pkg := range prog.AllPackages() {
		for _, mem := range pkg.Members {
			obj, ok := mem.(*ssa.NamedConst)
			if !ok {
				continue
			}
			consttype := obj.Type()
			if !types.AssignableTo(consttype, builtinErrorType) {
				continue
			}
			if !isAccessibleFrom(obj.Object(), qpos.info.Pkg) {
				continue
			}
			constants[*obj.Value] = obj
		}
	}

	return constants
}
예제 #2
0
// findVisibleErrs returns a mapping from each package-level variable of type "error" to nil.
func findVisibleErrs(prog *ssa.Program, qpos *QueryPos) map[*ssa.Global]ssa.Value {
	globals := make(map[*ssa.Global]ssa.Value)
	for _, pkg := range prog.AllPackages() {
		for _, mem := range pkg.Members {
			gbl, ok := mem.(*ssa.Global)
			if !ok {
				continue
			}
			gbltype := gbl.Type()
			// globals are always pointers
			if !types.Identical(deref(gbltype), builtinErrorType) {
				continue
			}
			if !isAccessibleFrom(gbl.Object(), qpos.info.Pkg) {
				continue
			}
			globals[gbl] = nil
		}
	}
	return globals
}