const_fn

• Fix detection of -Z assume-incomplete-release in recent nightly compilers.

• Fix parsing of macro metavariable in attribute arguments.

• Support compiling with RUSTFLAGS='-Z assume-incomplete-release' on nightly compiler.

• Fix compatibility issues with const generics.

• Exclude unneeded files from crates.io.

• Accept const_fn attribute with no arguments and functions without const keyword.
  This allows const_fn to be used as an optional dependency.

  #[cfg_attr(feature = "...", const_fn::const_fn)]
  pub fn func() {
      /* ... */
  }

• const_fn no longer fails to compile if unable to determine rustc version. Instead, it now displays a warning.

• const_fn no longer relies on debug print format.

• Improve error messages when failed to parse version information. (#26)

• Fix compile failure with cargo installed by yum. (#26)

• Fix compile failure with non-cargo build systems. (#23)

• Add support for version-based code generation. (#17) The following conditions are available:

  use const_fn::const_fn;
  
  // function is `const` on specified version and later compiler (including beta and nightly)
  #[const_fn("1.36")]
  pub const fn version() {
      /* ... */
  }
  
  // function is `const` on nightly compiler (including dev build)
  #[const_fn(nightly)]
  pub const fn nightly() {
      /* ... */
  }
  
  // function is `const` if `cfg(...)` is true
  #[const_fn(cfg(...))]
  pub const fn cfg() {
      /* ... */
  }
  
  // function is `const` if `cfg(feature = "...")` is true
  #[const_fn(feature = "...")]
  pub const fn feature() {
      /* ... */
  }
  

• Improve compile time by removing proc-macro related dependencies (#18, #20).

• Updated syn-mid to 0.5.

• #[const_fn] attribute may only be used on const functions.

• Updated proc-macro2, syn, and quote to 1.0.

• Updated syn-mid to 0.4.

• Transition to Rust 2018. With this change, the minimum required version will go up to Rust 1.31.

• Update syn-mid version to 0.3

• Reduce compilation time

• Revert 0.1.4

Note: This release has been yanked.

• Reduce compilation time

• Fix dependencies

• Improve error messages

• Improve an error message

Initial release