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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/more_defaults/abc_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::*;
#[deprecated(since = "2.0.0", note = "Use associated constants instead. This will no longer be generated in 2021.")]
@@ -42,8 +46,8 @@ impl ABC {
}
}
}
impl std::fmt::Debug for ABC {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
impl core::fmt::Debug for ABC {
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/more_defaults/more_defaults_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 MoreDefaultsOffset {}
@@ -194,8 +198,8 @@ impl<'a: 'b, 'b> MoreDefaultsBuilder<'a, 'b> {
}
}
impl std::fmt::Debug for MoreDefaults<'_> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
impl core::fmt::Debug for MoreDefaults<'_> {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
let mut ds = f.debug_struct("MoreDefaults");
ds.field("ints", &self.ints());
ds.field("floats", &self.floats());