Compilation error for type references inside a complex type

[andreivasiliu]

The following schema fails to compile:

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:tns="http://www.example.com/books"
           targetNamespace="http://www.example.com/books">

    <xs:complexType name="BookDetails">
        <xs:sequence>
            <xs:element name="Title" type="xs:string"/>
            <xs:element name="Author" type="xs:string"/>
            <xs:element name="Year" type="xs:int"/>
        </xs:sequence>
    </xs:complexType>

    <!-- Works! -->
    <xs:element name="Book1" type="tns:BookDetails"/>

    <!-- Crashes with:
      cannot find type `BookDetails` in this scope
      help: consider importing this struct: crate::types::BookDetails -->
    <xs:element name="Book2">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="details" type="tns:BookDetails"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>

The error is:

error[E0412]: cannot find type `BookDetails` in this scope
 --> src/main.rs:3:17
  |
3 | #[derive(Debug, XmlSchema)]
  |                 ^^^^^^^^^ not found in this scope
  |
  = help: consider importing this struct:
          crate::types::BookDetails

Most likely the code generator for complex types is creating a new scope/module but it doesn't use super::* or something similar.

[andreivasiliu]

Using cargo expand, I got the following bits:

#[yaserde(
    prefix = "my_prefix",
    namespace = "my_prefix: http://www.example.com/books"
)]
pub struct Book1 {
    #[yaserde(flatten)]
    pub content: types::BookDetails,
}

#[yaserde(
    prefix = "my_prefix",
    namespace = "my_prefix: http://www.example.com/books"
)]
pub struct Book2 {
    #[yaserde(rename = "details", prefix = "my_prefix")]
    pub details: BookDetails,
}

The second reference to BookDetails, which does not have the types:: prefix, is probably one of the places where this is an issue.

[Masken8]

I'm having the same issue.

[MarcAntoine-Arnaud]

Hi @andreivasiliu @Masken8

I have updated the code on main that fix the problem.

Can you check if it fix it correctly ?

[andreivasiliu]

Something's different now, but it does not compile... at least assuming I'm supposed to use it the same way as before, and nothing changed on what I need to use.

error[E0433]: failed to resolve: use of undeclared crate or module `xml_schema_types`
 --> src/main.rs:3:17
  |
3 | #[derive(Debug, XmlSchema)]
  |                 ^^^^^^^^^ use of undeclared crate or module `xml_schema_types`
  |
  = help: consider importing this module through its public re-export:
          crate::xml_schema_types
  = note: this error originates in the derive macro `XmlSchema` (in Nightly builds, run with -Z macro-backtrace for more info)

This xml_schema_types seems to be created by the macro inside my own crate, so I doubt I need to import it myself.

This is what I used:
https://gist.github.com/andreivasiliu/cde0a669d75bb2d80ae1f6acd92d5263

[MarcAntoine-Arnaud]

Hi @andreivasiliu
The code compiles correctly, you have changed the initial XSD.

I have generated a fix to handle this case.

Let me know if it's fixed now.