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Make flatc generate Rust files not requiring std (#7273)

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* Set an explicit 2018 edition for Rust tests

* Replace all `std` usage with `core` and `alloc` in Rust code generator

* Update the generated files

* Make Rust tests actually use no_std when the corresponding feature is enabled
This commit is contained in:
Bogdan Opanchuk
2022-04-26 18:40:03 -07:00
committed by GitHub
parent 9917a168cd
commit 750dde7669
88 changed files with 799 additions and 430 deletions
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12
tests/include_test2/my_game/other_name_space/from_include_generated.rs
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@@ -1,7 +1,11 @@
// automatically generated by the FlatBuffers compiler, do not modify
extern crate alloc;
extern crate flatbuffers;
use std::mem;
use std::cmp::Ordering;
use alloc::boxed::Box;
use alloc::string::{String, ToString};
use alloc::vec::Vec;
use core::mem;
use core::cmp::Ordering;
use self::flatbuffers::{EndianScalar, Follow};
use super::*;
#[deprecated(since = "2.0.0", note = "Use associated constants instead. This will no longer be generated in 2021.")]
@@ -34,8 +38,8 @@ impl FromInclude {
}
}
}
impl std::fmt::Debug for FromInclude {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
impl core::fmt::Debug for FromInclude {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
if let Some(name) = self.variant_name() {
f.write_str(name)
} else {

12
tests/include_test2/my_game/other_name_space/table_b_generated.rs
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@@ -1,7 +1,11 @@
// automatically generated by the FlatBuffers compiler, do not modify
extern crate alloc;
extern crate flatbuffers;
use std::mem;
use std::cmp::Ordering;
use alloc::boxed::Box;
use alloc::string::{String, ToString};
use alloc::vec::Vec;
use core::mem;
use core::cmp::Ordering;
use self::flatbuffers::{EndianScalar, Follow};
use super::*;
pub enum TableBOffset {}
@@ -103,8 +107,8 @@ impl<'a: 'b, 'b> TableBBuilder<'a, 'b> {
}
}
impl std::fmt::Debug for TableB<'_> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
impl core::fmt::Debug for TableB<'_> {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
let mut ds = f.debug_struct("TableB");
ds.field("a", &self.a());
ds.finish()

16
tests/include_test2/my_game/other_name_space/unused_generated.rs
View File

@@ -1,7 +1,11 @@
// automatically generated by the FlatBuffers compiler, do not modify
extern crate alloc;
extern crate flatbuffers;
use std::mem;
use std::cmp::Ordering;
use alloc::boxed::Box;
use alloc::string::{String, ToString};
use alloc::vec::Vec;
use core::mem;
use core::cmp::Ordering;
use self::flatbuffers::{EndianScalar, Follow};
use super::*;
// struct Unused, aligned to 4
@@ -13,8 +17,8 @@ impl Default for Unused {
Self([0; 4])
}
}
impl std::fmt::Debug for Unused {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
impl core::fmt::Debug for Unused {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
f.debug_struct("Unused")
.field("a", &self.a())
.finish()
@@ -42,7 +46,7 @@ impl<'b> flatbuffers::Push for Unused {
#[inline]
fn push(&self, dst: &mut [u8], _rest: &[u8]) {
let src = unsafe {
::std::slice::from_raw_parts(self as *const Unused as *const u8, Self::size())
::core::slice::from_raw_parts(self as *const Unused as *const u8, Self::size())
};
dst.copy_from_slice(src);
}
@@ -53,7 +57,7 @@ impl<'b> flatbuffers::Push for &'b Unused {
#[inline]
fn push(&self, dst: &mut [u8], _rest: &[u8]) {
let src = unsafe {
::std::slice::from_raw_parts(*self as *const Unused as *const u8, Self::size())
::core::slice::from_raw_parts(*self as *const Unused as *const u8, Self::size())
};
dst.copy_from_slice(src);
}

12
tests/include_test2/table_a_generated.rs
View File

@@ -1,7 +1,11 @@
// automatically generated by the FlatBuffers compiler, do not modify
extern crate alloc;
extern crate flatbuffers;
use std::mem;
use std::cmp::Ordering;
use alloc::boxed::Box;
use alloc::string::{String, ToString};
use alloc::vec::Vec;
use core::mem;
use core::cmp::Ordering;
use self::flatbuffers::{EndianScalar, Follow};
use super::*;
pub enum TableAOffset {}
@@ -103,8 +107,8 @@ impl<'a: 'b, 'b> TableABuilder<'a, 'b> {
}
}
impl std::fmt::Debug for TableA<'_> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
impl core::fmt::Debug for TableA<'_> {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
let mut ds = f.debug_struct("TableA");
ds.field("b", &self.b());
ds.finish()