c2047754c3
Compiler changes:
* Change map assignment to use mapassign and assign value directly.
* Change string iteration to use decoderune, faster for ASCII strings.
* Change makeslice to take int, and use makeslice64 for larger values.
* Add new noverflow field to hmap struct used for maps.
Unresolved problems, to be fixed later:
* Commented out test in go/types/sizes_test.go that doesn't compile.
* Commented out reflect.TestStructOf test for padding after zero-sized field.
Reviewed-on: https://go-review.googlesource.com/35231
gotools/:
Updates for Go 1.8rc1.
* Makefile.am (go_cmd_go_files): Add bug.go.
(s-zdefaultcc): Write defaultPkgConfig.
* Makefile.in: Rebuild.
From-SVN: r244456
257 lines
11 KiB
Go
257 lines
11 KiB
Go
// 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 builtin provides documentation for Go's predeclared identifiers.
|
|
The items documented here are not actually in package builtin
|
|
but their descriptions here allow godoc to present documentation
|
|
for the language's special identifiers.
|
|
*/
|
|
package builtin
|
|
|
|
// bool is the set of boolean values, true and false.
|
|
type bool bool
|
|
|
|
// true and false are the two untyped boolean values.
|
|
const (
|
|
true = 0 == 0 // Untyped bool.
|
|
false = 0 != 0 // Untyped bool.
|
|
)
|
|
|
|
// uint8 is the set of all unsigned 8-bit integers.
|
|
// Range: 0 through 255.
|
|
type uint8 uint8
|
|
|
|
// uint16 is the set of all unsigned 16-bit integers.
|
|
// Range: 0 through 65535.
|
|
type uint16 uint16
|
|
|
|
// uint32 is the set of all unsigned 32-bit integers.
|
|
// Range: 0 through 4294967295.
|
|
type uint32 uint32
|
|
|
|
// uint64 is the set of all unsigned 64-bit integers.
|
|
// Range: 0 through 18446744073709551615.
|
|
type uint64 uint64
|
|
|
|
// int8 is the set of all signed 8-bit integers.
|
|
// Range: -128 through 127.
|
|
type int8 int8
|
|
|
|
// int16 is the set of all signed 16-bit integers.
|
|
// Range: -32768 through 32767.
|
|
type int16 int16
|
|
|
|
// int32 is the set of all signed 32-bit integers.
|
|
// Range: -2147483648 through 2147483647.
|
|
type int32 int32
|
|
|
|
// int64 is the set of all signed 64-bit integers.
|
|
// Range: -9223372036854775808 through 9223372036854775807.
|
|
type int64 int64
|
|
|
|
// float32 is the set of all IEEE-754 32-bit floating-point numbers.
|
|
type float32 float32
|
|
|
|
// float64 is the set of all IEEE-754 64-bit floating-point numbers.
|
|
type float64 float64
|
|
|
|
// complex64 is the set of all complex numbers with float32 real and
|
|
// imaginary parts.
|
|
type complex64 complex64
|
|
|
|
// complex128 is the set of all complex numbers with float64 real and
|
|
// imaginary parts.
|
|
type complex128 complex128
|
|
|
|
// string is the set of all strings of 8-bit bytes, conventionally but not
|
|
// necessarily representing UTF-8-encoded text. A string may be empty, but
|
|
// not nil. Values of string type are immutable.
|
|
type string string
|
|
|
|
// int is a signed integer type that is at least 32 bits in size. It is a
|
|
// distinct type, however, and not an alias for, say, int32.
|
|
type int int
|
|
|
|
// uint is an unsigned integer type that is at least 32 bits in size. It is a
|
|
// distinct type, however, and not an alias for, say, uint32.
|
|
type uint uint
|
|
|
|
// uintptr is an integer type that is large enough to hold the bit pattern of
|
|
// any pointer.
|
|
type uintptr uintptr
|
|
|
|
// byte is an alias for uint8 and is equivalent to uint8 in all ways. It is
|
|
// used, by convention, to distinguish byte values from 8-bit unsigned
|
|
// integer values.
|
|
type byte byte
|
|
|
|
// rune is an alias for int32 and is equivalent to int32 in all ways. It is
|
|
// used, by convention, to distinguish character values from integer values.
|
|
type rune rune
|
|
|
|
// iota is a predeclared identifier representing the untyped integer ordinal
|
|
// number of the current const specification in a (usually parenthesized)
|
|
// const declaration. It is zero-indexed.
|
|
const iota = 0 // Untyped int.
|
|
|
|
// nil is a predeclared identifier representing the zero value for a
|
|
// pointer, channel, func, interface, map, or slice type.
|
|
var nil Type // Type must be a pointer, channel, func, interface, map, or slice type
|
|
|
|
// Type is here for the purposes of documentation only. It is a stand-in
|
|
// for any Go type, but represents the same type for any given function
|
|
// invocation.
|
|
type Type int
|
|
|
|
// Type1 is here for the purposes of documentation only. It is a stand-in
|
|
// for any Go type, but represents the same type for any given function
|
|
// invocation.
|
|
type Type1 int
|
|
|
|
// IntegerType is here for the purposes of documentation only. It is a stand-in
|
|
// for any integer type: int, uint, int8 etc.
|
|
type IntegerType int
|
|
|
|
// FloatType is here for the purposes of documentation only. It is a stand-in
|
|
// for either float type: float32 or float64.
|
|
type FloatType float32
|
|
|
|
// ComplexType is here for the purposes of documentation only. It is a
|
|
// stand-in for either complex type: complex64 or complex128.
|
|
type ComplexType complex64
|
|
|
|
// The append built-in function appends elements to the end of a slice. If
|
|
// it has sufficient capacity, the destination is resliced to accommodate the
|
|
// new elements. If it does not, a new underlying array will be allocated.
|
|
// Append returns the updated slice. It is therefore necessary to store the
|
|
// result of append, often in the variable holding the slice itself:
|
|
// slice = append(slice, elem1, elem2)
|
|
// slice = append(slice, anotherSlice...)
|
|
// As a special case, it is legal to append a string to a byte slice, like this:
|
|
// slice = append([]byte("hello "), "world"...)
|
|
func append(slice []Type, elems ...Type) []Type
|
|
|
|
// The copy built-in function copies elements from a source slice into a
|
|
// destination slice. (As a special case, it also will copy bytes from a
|
|
// string to a slice of bytes.) The source and destination may overlap. Copy
|
|
// returns the number of elements copied, which will be the minimum of
|
|
// len(src) and len(dst).
|
|
func copy(dst, src []Type) int
|
|
|
|
// The delete built-in function deletes the element with the specified key
|
|
// (m[key]) from the map. If m is nil or there is no such element, delete
|
|
// is a no-op.
|
|
func delete(m map[Type]Type1, key Type)
|
|
|
|
// The len built-in function returns the length of v, according to its type:
|
|
// Array: the number of elements in v.
|
|
// Pointer to array: the number of elements in *v (even if v is nil).
|
|
// Slice, or map: the number of elements in v; if v is nil, len(v) is zero.
|
|
// String: the number of bytes in v.
|
|
// Channel: the number of elements queued (unread) in the channel buffer;
|
|
// if v is nil, len(v) is zero.
|
|
func len(v Type) int
|
|
|
|
// The cap built-in function returns the capacity of v, according to its type:
|
|
// Array: the number of elements in v (same as len(v)).
|
|
// Pointer to array: the number of elements in *v (same as len(v)).
|
|
// Slice: the maximum length the slice can reach when resliced;
|
|
// if v is nil, cap(v) is zero.
|
|
// Channel: the channel buffer capacity, in units of elements;
|
|
// if v is nil, cap(v) is zero.
|
|
func cap(v Type) int
|
|
|
|
// The make built-in function allocates and initializes an object of type
|
|
// slice, map, or chan (only). Like new, the first argument is a type, not a
|
|
// value. Unlike new, make's return type is the same as the type of its
|
|
// argument, not a pointer to it. The specification of the result depends on
|
|
// the type:
|
|
// Slice: The size specifies the length. The capacity of the slice is
|
|
// equal to its length. A second integer argument may be provided to
|
|
// specify a different capacity; it must be no smaller than the
|
|
// length, so make([]int, 0, 10) allocates a slice of length 0 and
|
|
// capacity 10.
|
|
// Map: An empty map is allocated with enough space to hold the
|
|
// specified number of elements. The size may be omitted, in which case
|
|
// a small starting size is allocated.
|
|
// Channel: The channel's buffer is initialized with the specified
|
|
// buffer capacity. If zero, or the size is omitted, the channel is
|
|
// unbuffered.
|
|
func make(Type, size IntegerType) Type
|
|
|
|
// The new built-in function allocates memory. The first argument is a type,
|
|
// not a value, and the value returned is a pointer to a newly
|
|
// allocated zero value of that type.
|
|
func new(Type) *Type
|
|
|
|
// The complex built-in function constructs a complex value from two
|
|
// floating-point values. The real and imaginary parts must be of the same
|
|
// size, either float32 or float64 (or assignable to them), and the return
|
|
// value will be the corresponding complex type (complex64 for float32,
|
|
// complex128 for float64).
|
|
func complex(r, i FloatType) ComplexType
|
|
|
|
// The real built-in function returns the real part of the complex number c.
|
|
// The return value will be floating point type corresponding to the type of c.
|
|
func real(c ComplexType) FloatType
|
|
|
|
// The imag built-in function returns the imaginary part of the complex
|
|
// number c. The return value will be floating point type corresponding to
|
|
// the type of c.
|
|
func imag(c ComplexType) FloatType
|
|
|
|
// The close built-in function closes a channel, which must be either
|
|
// bidirectional or send-only. It should be executed only by the sender,
|
|
// never the receiver, and has the effect of shutting down the channel after
|
|
// the last sent value is received. After the last value has been received
|
|
// from a closed channel c, any receive from c will succeed without
|
|
// blocking, returning the zero value for the channel element. The form
|
|
// x, ok := <-c
|
|
// will also set ok to false for a closed channel.
|
|
func close(c chan<- Type)
|
|
|
|
// The panic built-in function stops normal execution of the current
|
|
// goroutine. When a function F calls panic, normal execution of F stops
|
|
// immediately. Any functions whose execution was deferred by F are run in
|
|
// the usual way, and then F returns to its caller. To the caller G, the
|
|
// invocation of F then behaves like a call to panic, terminating G's
|
|
// execution and running any deferred functions. This continues until all
|
|
// functions in the executing goroutine have stopped, in reverse order. At
|
|
// that point, the program is terminated and the error condition is reported,
|
|
// including the value of the argument to panic. This termination sequence
|
|
// is called panicking and can be controlled by the built-in function
|
|
// recover.
|
|
func panic(v interface{})
|
|
|
|
// The recover built-in function allows a program to manage behavior of a
|
|
// panicking goroutine. Executing a call to recover inside a deferred
|
|
// function (but not any function called by it) stops the panicking sequence
|
|
// by restoring normal execution and retrieves the error value passed to the
|
|
// call of panic. If recover is called outside the deferred function it will
|
|
// not stop a panicking sequence. In this case, or when the goroutine is not
|
|
// panicking, or if the argument supplied to panic was nil, recover returns
|
|
// nil. Thus the return value from recover reports whether the goroutine is
|
|
// panicking.
|
|
func recover() interface{}
|
|
|
|
// The print built-in function formats its arguments in an
|
|
// implementation-specific way and writes the result to standard error.
|
|
// Print is useful for bootstrapping and debugging; it is not guaranteed
|
|
// to stay in the language.
|
|
func print(args ...Type)
|
|
|
|
// The println built-in function formats its arguments in an
|
|
// implementation-specific way and writes the result to standard error.
|
|
// Spaces are always added between arguments and a newline is appended.
|
|
// Println is useful for bootstrapping and debugging; it is not guaranteed
|
|
// to stay in the language.
|
|
func println(args ...Type)
|
|
|
|
// The error built-in interface type is the conventional interface for
|
|
// representing an error condition, with the nil value representing no error.
|
|
type error interface {
|
|
Error() string
|
|
}
|