builtin: small cleanup and merging of several small files into vlib/builtin/chan_option_result.v (#25089)
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This commit is contained in:
Delyan Angelov 2025-08-11 13:46:46 +03:00 committed by GitHub
parent 350747793b
commit 963e3e8ae2
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5 changed files with 204 additions and 217 deletions

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@ -1,32 +0,0 @@
module builtin
// ChanState describes the result of an attempted channel transaction.
pub enum ChanState {
success
not_ready // push()/pop() would have to wait, but no_block was requested
closed
}
/*
The following methods are only stubs.
The real implementation is in `vlib/sync/channels.v`
*/
// close closes the channel for further push transactions.
// closed channels cannot be pushed to, however they can be popped
// from as long as there is still objects available in the channel buffer.
pub fn (ch chan) close() {}
// try_pop returns `ChanState.success` if an object is popped from the channel.
// try_pop effectively pops from the channel without waiting for objects to become available.
// Both the test and pop transaction is done atomically.
pub fn (ch chan) try_pop(obj voidptr) ChanState {
return .success
}
// try_push returns `ChanState.success` if the object is pushed to the channel.
// try_push effectively both push and test if the transaction `ch <- a` succeeded.
// Both the test and push transaction is done atomically.
pub fn (ch chan) try_push(obj voidptr) ChanState {
return .success
}

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@ -0,0 +1,204 @@
module builtin
// ChanState describes the result of an attempted channel transaction.
pub enum ChanState {
success
not_ready // push()/pop() would have to wait, but no_block was requested
closed
}
/*
The following methods are only stubs.
The real implementation is in `vlib/sync/channels.v`
*/
// close closes the channel for further push transactions.
// closed channels cannot be pushed to, however they can be popped
// from as long as there is still objects available in the channel buffer.
pub fn (ch chan) close() {}
// try_pop returns `ChanState.success` if an object is popped from the channel.
// try_pop effectively pops from the channel without waiting for objects to become available.
// Both the test and pop transaction is done atomically.
pub fn (ch chan) try_pop(obj voidptr) ChanState {
return .success
}
// try_push returns `ChanState.success` if the object is pushed to the channel.
// try_push effectively both push and test if the transaction `ch <- a` succeeded.
// Both the test and push transaction is done atomically.
pub fn (ch chan) try_push(obj voidptr) ChanState {
return .success
}
// IError holds information about an error instance.
pub interface IError {
msg() string
code() int
}
struct _result {
is_error bool
err IError = none__
// Data is trailing after err
// and is not included in here but in the
// derived Result_xxx types
}
fn _result_ok(data voidptr, mut res _result, size int) {
unsafe {
*res = _result{}
// use err to get the end of ResultBase and then memcpy into it
vmemcpy(&u8(&res.err) + sizeof(IError), data, size)
}
}
// str returns the message of IError.
pub fn (err IError) str() string {
return match err {
None__ {
'none'
}
Error {
err.msg()
}
MessageError {
(*err).str()
}
else {
'${err.type_name()}: ${err.msg()}'
}
}
}
// Error is the empty default implementation of `IError`.
pub struct Error {}
pub fn (err Error) msg() string {
return ''
}
pub fn (err Error) code() int {
return 0
}
// MessageError is the default implementation of the `IError` interface that is returned by the `error()` function.
struct MessageError {
pub:
msg string
code int
}
// str returns both the .msg and .code of MessageError, when .code is != 0 .
pub fn (err MessageError) str() string {
if err.code > 0 {
return '${err.msg}; code: ${err.code}'
}
return err.msg
}
// msg returns only the message of MessageError.
pub fn (err MessageError) msg() string {
return err.msg
}
// code returns only the code of MessageError.
pub fn (err MessageError) code() int {
return err.code
}
@[unsafe]
pub fn (err &MessageError) free() {
unsafe { err.msg.free() }
}
@[if trace_error ?]
fn trace_error(x string) {
eprintln('> ${@FN} | ${x}')
}
// error returns a default error instance containing the error given in `message`.
// Example: if ouch { return error('an error occurred') }
@[inline]
pub fn error(message string) IError {
trace_error(message)
return &MessageError{
msg: message
}
}
// error_with_code returns a default error instance containing the given `message` and error `code`.
// Example: if ouch { return error_with_code('an error occurred', 1) }
@[inline]
pub fn error_with_code(message string, code int) IError {
trace_error('${message} | code: ${code}')
return &MessageError{
msg: message
code: code
}
}
// Option is the base of V's internal option return system.
struct Option {
state u8 // 0 - ok; 2 - none; 1 - ?
err IError = none__
// Data is trailing after err
// and is not included in here but in the
// derived Option_xxx types
}
// option is the base of V's internal option return system.
struct _option {
state u8
err IError = none__
// Data is trailing after err
// and is not included in here but in the
// derived _option_xxx types
}
fn _option_none(data voidptr, mut option _option, size int) {
unsafe {
*option = _option{
state: 2
}
// use err to get the end of OptionBase and then memcpy into it
vmemcpy(&u8(&option.err) + sizeof(IError), data, size)
}
}
fn _option_ok(data voidptr, mut option _option, size int) {
unsafe {
*option = _option{}
// use err to get the end of OptionBase and then memcpy into it
vmemcpy(&u8(&option.err) + sizeof(IError), data, size)
}
}
fn _option_clone(current &_option, mut option _option, size int) {
unsafe {
*option = _option{
state: current.state
err: current.err
}
// use err to get the end of OptionBase and then memcpy into it
vmemcpy(&u8(&option.err) + sizeof(IError), &u8(&current.err) + sizeof(IError),
size)
}
}
//
const none__ = IError(&None__{})
struct None__ {
Error
}
fn (_ None__) str() string {
return 'none'
}
// str for none, returns 'none'
pub fn (_ none) str() string {
return 'none'
}

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@ -1,6 +0,0 @@
// Copyright (c) 2019-2024 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
module builtin
fn float_test() {
}

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@ -1,68 +0,0 @@
// Copyright (c) 2019-2024 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module builtin
// Option is the base of V's internal option return system.
struct Option {
state u8 // 0 - ok; 2 - none; 1 - ?
err IError = none__
// Data is trailing after err
// and is not included in here but in the
// derived Option_xxx types
}
// option is the base of V's internal option return system.
struct _option {
state u8
err IError = none__
// Data is trailing after err
// and is not included in here but in the
// derived _option_xxx types
}
fn _option_none(data voidptr, mut option _option, size int) {
unsafe {
*option = _option{
state: 2
}
// use err to get the end of OptionBase and then memcpy into it
vmemcpy(&u8(&option.err) + sizeof(IError), data, size)
}
}
fn _option_ok(data voidptr, mut option _option, size int) {
unsafe {
*option = _option{}
// use err to get the end of OptionBase and then memcpy into it
vmemcpy(&u8(&option.err) + sizeof(IError), data, size)
}
}
fn _option_clone(current &_option, mut option _option, size int) {
unsafe {
*option = _option{
state: current.state
err: current.err
}
// use err to get the end of OptionBase and then memcpy into it
vmemcpy(&u8(&option.err) + sizeof(IError), &u8(&current.err) + sizeof(IError),
size)
}
}
//
const none__ = IError(&None__{})
struct None__ {
Error
}
fn (_ None__) str() string {
return 'none'
}
pub fn (_ none) str() string {
return 'none'
}

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@ -1,111 +0,0 @@
// Copyright (c) 2019-2024 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module builtin
// IError holds information about an error instance.
pub interface IError {
msg() string
code() int
}
struct _result {
is_error bool
err IError = none__
// Data is trailing after err
// and is not included in here but in the
// derived Result_xxx types
}
fn _result_ok(data voidptr, mut res _result, size int) {
unsafe {
*res = _result{}
// use err to get the end of ResultBase and then memcpy into it
vmemcpy(&u8(&res.err) + sizeof(IError), data, size)
}
}
// str returns the message of IError.
pub fn (err IError) str() string {
return match err {
None__ {
'none'
}
Error {
err.msg()
}
MessageError {
(*err).str()
}
else {
'${err.type_name()}: ${err.msg()}'
}
}
}
// Error is the empty default implementation of `IError`.
pub struct Error {}
pub fn (err Error) msg() string {
return ''
}
pub fn (err Error) code() int {
return 0
}
// MessageError is the default implementation of the `IError` interface that is returned by the `error()` function.
struct MessageError {
pub:
msg string
code int
}
// str returns both the .msg and .code of MessageError, when .code is != 0 .
pub fn (err MessageError) str() string {
if err.code > 0 {
return '${err.msg}; code: ${err.code}'
}
return err.msg
}
// msg returns only the message of MessageError.
pub fn (err MessageError) msg() string {
return err.msg
}
// code returns only the code of MessageError.
pub fn (err MessageError) code() int {
return err.code
}
@[unsafe]
pub fn (err &MessageError) free() {
unsafe { err.msg.free() }
}
@[if trace_error ?]
fn trace_error(x string) {
eprintln('> ${@FN} | ${x}')
}
// error returns a default error instance containing the error given in `message`.
// Example: if ouch { return error('an error occurred') }
@[inline]
pub fn error(message string) IError {
trace_error(message)
return &MessageError{
msg: message
}
}
// error_with_code returns a default error instance containing the given `message` and error `code`.
// Example: if ouch { return error_with_code('an error occurred', 1) }
@[inline]
pub fn error_with_code(message string, code int) IError {
trace_error('${message} | code: ${code}')
return &MessageError{
msg: message
code: code
}
}