| // Copyright 2011 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package types2 |
| |
| // BasicKind describes the kind of basic type. |
| type BasicKind int |
| |
| const ( |
| Invalid BasicKind = iota // type is invalid |
| |
| // predeclared types |
| Bool |
| Int |
| Int8 |
| Int16 |
| Int32 |
| Int64 |
| Uint |
| Uint8 |
| Uint16 |
| Uint32 |
| Uint64 |
| Uintptr |
| Float32 |
| Float64 |
| Complex64 |
| Complex128 |
| String |
| UnsafePointer |
| |
| // types for untyped values |
| UntypedBool |
| UntypedInt |
| UntypedRune |
| UntypedFloat |
| UntypedComplex |
| UntypedString |
| UntypedNil |
| |
| // aliases |
| Byte = Uint8 |
| Rune = Int32 |
| ) |
| |
| // BasicInfo is a set of flags describing properties of a basic type. |
| type BasicInfo int |
| |
| // Properties of basic types. |
| const ( |
| IsBoolean BasicInfo = 1 << iota |
| IsInteger |
| IsUnsigned |
| IsFloat |
| IsComplex |
| IsString |
| IsUntyped |
| |
| IsOrdered = IsInteger | IsFloat | IsString |
| IsNumeric = IsInteger | IsFloat | IsComplex |
| IsConstType = IsBoolean | IsNumeric | IsString |
| ) |
| |
| // A Basic represents a basic type. |
| type Basic struct { |
| kind BasicKind |
| info BasicInfo |
| name string |
| } |
| |
| // Kind returns the kind of basic type b. |
| func (b *Basic) Kind() BasicKind { return b.kind } |
| |
| // Info returns information about properties of basic type b. |
| func (b *Basic) Info() BasicInfo { return b.info } |
| |
| // Name returns the name of basic type b. |
| func (b *Basic) Name() string { return b.name } |
| |
| func (b *Basic) Underlying() Type { return b } |
| func (b *Basic) String() string { return TypeString(b, nil) } |