//===- predicates.go - type predicates ------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements commonly used type predicates.
//
//===----------------------------------------------------------------------===//

package irgen

import (
	"llvm.org/llgo/third_party/go.tools/go/types"
)

func isBoolean(typ types.Type) bool {
	t, ok := typ.Underlying().(*types.Basic)
	return ok && t.Info()&types.IsBoolean != 0
}

func isInteger(typ types.Type) bool {
	t, ok := typ.Underlying().(*types.Basic)
	return ok && t.Info()&types.IsInteger != 0
}

func isUnsigned(typ types.Type) bool {
	t, ok := typ.Underlying().(*types.Basic)
	return ok && t.Info()&types.IsUnsigned != 0
}

func isFloat(typ types.Type) bool {
	t, ok := typ.Underlying().(*types.Basic)
	return ok && t.Info()&types.IsFloat != 0
}

func isComplex(typ types.Type) bool {
	t, ok := typ.Underlying().(*types.Basic)
	return ok && t.Info()&types.IsComplex != 0
}

func isString(typ types.Type) bool {
	t, ok := typ.Underlying().(*types.Basic)
	return ok && t.Info()&types.IsString != 0
}

func isUntyped(typ types.Type) bool {
	t, ok := typ.Underlying().(*types.Basic)
	return ok && t.Info()&types.IsUntyped != 0
}

func isSlice(typ types.Type, bkind types.BasicKind) bool {
	t, ok := typ.Underlying().(*types.Slice)
	return ok && types.Identical(t.Elem().Underlying(), types.Typ[bkind])
}