Parsing error with nfs4.x

[messense]

https://github.com/sahlberg/libnfs/blob/master/nfs4/nfs4.x

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { variant: ParsingError { positives: [EOI, constant, enum_type, struct_type, union, typedef], negatives: [] }, location: Pos(55941), line_col: Pos((2088, 1)), path: None, line: "program NFS4_PROGRAM {␊", continued_line: None }', build.rs:10:14

Removing all program statements results in another error:

thread 'main' panicked at 'non-i32 enum variant value: ParseIntError { kind: InvalidDigit }', /Users/messense/.cargo/registry/src/github.com-1ecc6299db9ec823/fastxdr-1.0.2/src/ast/enumeration.rs:47:18

Using the master branch of fastxdr results in another error:

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: "unresolvable type unsigned"', build.rs:10:14

build.rs:

fn main() {
    // Tell Cargo to regenerate the types if the XDR spec changes
    println!("cargo:rerun-if-changed=src/nfs4.x");

    // Read from nfs4.x, writing the generated code to out.rs
    std::fs::write(
        std::path::Path::new(std::env::var("OUT_DIR").unwrap().as_str()).join("out.rs"),
        fastxdr::Generator::default()
            .generate(include_str!("src/nfs4.x"))
            .unwrap(),
    )
    .unwrap();
}

[messense]

Modified two unsigned to unsigned int makes the build work:

1. https://github.com/sahlberg/libnfs/blob/f85c21755e5de76f8f622cdd71f60b49c0751eaa/nfs4/nfs4.x#L2153
2. https://github.com/sahlberg/libnfs/blob/f85c21755e5de76f8f622cdd71f60b49c0751eaa/nfs4/nfs4.x#L2159

But the generated code doesn't compile:

error[E0308]: mismatched types
    --> /Users/messense/Projects/nfs/target/debug/build/nfs-b8a3ecb314bc087c/out/out.rs:1673:22
     |
1673 | LAYOUTRETURN4_FILE = LAYOUT4_RET_REC_FILE,
     |                      ^^^^^^^^^^^^^^^^^^^^ expected `isize`, found `u32`

error[E0308]: mismatched types
    --> /Users/messense/Projects/nfs/target/debug/build/nfs-b8a3ecb314bc087c/out/out.rs:1674:22
     |
1674 | LAYOUTRETURN4_FSID = LAYOUT4_RET_REC_FSID,
     |                      ^^^^^^^^^^^^^^^^^^^^ expected `isize`, found `u32`

error[E0308]: mismatched types
    --> /Users/messense/Projects/nfs/target/debug/build/nfs-b8a3ecb314bc087c/out/out.rs:1675:21
     |
1675 | LAYOUTRETURN4_ALL = LAYOUT4_RET_REC_ALL,
     |                     ^^^^^^^^^^^^^^^^^^^ expected `isize`, found `u32`

For more information about this error, try `rustc --explain E0308`.
error: could not compile `nfs` due to 3 previous errors

Related code in out.rs

pub const LAYOUT4_RET_REC_ALL: u32 = 3;
pub const LAYOUT4_RET_REC_FILE: u32 = 1;
pub const LAYOUT4_RET_REC_FSID: u32 = 2;

#[derive(Debug, PartialEq)]
pub enum layoutreturn_type4 {
LAYOUTRETURN4_FILE = LAYOUT4_RET_REC_FILE,
LAYOUTRETURN4_FSID = LAYOUT4_RET_REC_FSID,
LAYOUTRETURN4_ALL = LAYOUT4_RET_REC_ALL,
}

[akitaSummer]

@messense Hello, my friend. Have you found a solution to this issue? I'm currently looking to develop a high-performance NFSv4 server and came across a similar problem. Do you have any good suggestions or solutions that could help me?

[messense]

@akitaSummer I think #83 should fix #17 (comment).

[akitaSummer]

error: expected one of `(`, `,`, `=`, `{`, or `}`, found `:`
    --> src/out.rs:1742:19
     |
1741 | pub enum layoutreturn_type4 {
     |          ------------------ while parsing this enum
1742 | LAYOUTRETURN4_FILE: u32 = LAYOUT4_RET_REC_FILE,
     |                   ^ expected one of `(`, `,`, `=`, `{`, or `}`
     |
     = help: enum variants can be `Variant`, `Variant = <integer>`, `Variant(Type, ..., TypeN)` or `Variant { fields: Types }`
help: perhaps you meant to use `struct` here
     |
1741 | pub struct layoutreturn_type4 {
     |     ~~~~~~

@messense enum doesn't seem to support this syntax

[messense]

Oops, I think #[repr(u32)] should work. But there are still many more errors.

[akitaSummer]

@messense Are you still studying nfs4.x related things now? I followed you on X and hope to ask you some questions.

[messense]

Nope.