assert-impl 0.1.3

Macro for static assert types implement a trait or not
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    1 out of 2 items documented1 out of 1 items with examples
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  • Source code size: 5.31 kB This is the summed size of all the files inside the crates.io package for this release.
  • Documentation size: 1.02 MB This is the summed size of all files generated by rustdoc for all configured targets
  • Links
  • upsuper/assert-impl
    6 1 2
  • crates.io
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  • upsuper

Macro for static assert that types implement a trait or not.

Note: this macro can only be used inside function body due to restriction of Rust.

Example

Assuming you have the following definitions:

struct C;
struct Java;
struct JavaScript;
struct Python;
struct Rust;

trait StaticTyping {}
impl StaticTyping for C {}
impl StaticTyping for Java {}
impl StaticTyping for Rust {}

This should build:

assert_impl!(StaticTyping: C, Java, Rust);
assert_impl!(StaticTyping: C, Java, Rust, );
assert_impl!(!StaticTyping: JavaScript, Python);
assert_impl!(!StaticTyping: JavaScript, Python, );

But this should fail to build:

assert_impl!(StaticTyping: JavaScript);
assert_impl!(!StaticTyping: Rust);