Struct Shadow

pub struct Shadow {
    pub f: File,
    pub map: BTreeMap<ShadowConst, ConstVal>,
    pub std_env: BTreeMap<String, String>,
    pub deny_const: BTreeSet<ShadowConst>,
}

shadow-rs configuration.

If you use the recommended utility functions new, new_deny, or new_hook, you do not have to handle Shadow configurations themselves. However, this struct provides more fine-grained access to shadow-rs configuration, such as using a denylist and a hook function at the same time.

Fields

f: File

The file that shadow-rs writes build information to.

map: BTreeMap<ShadowConst, ConstVal>

The values of build constants to be written.

std_env: BTreeMap<String, String>

Build environment variables, obtained through std::env::vars.

deny_const: BTreeSet<ShadowConst>

Constants in the deny list, passed through new_deny or Shadow::build.

Implementations

impl Shadow

pub fn hook<F>(&self, f: F) -> SdResult<()>

where F: FnOnce(&File) -> SdResult<()>,

Write the build configuration specified by this Shadow instance. The hook function is run as well, allowing it to append to shadow-rs’s output.

pub fn deny_contains(&self, deny_const: ShadowConst) -> bool

Checks if the specified build constant is in the deny list.

Arguments

• deny_const - A value of type ShadowConst representing the build constant to check.

Returns

• true if the build constant is present in the deny list; otherwise, false.

pub fn build(deny_const: BTreeSet<ShadowConst>) -> SdResult<Shadow>

Create a new Shadow configuration with a provided denylist. The project source path and output file are automatically derived from Cargo build environment variables.

pub fn build_with( src_path: String, out_path: String, deny_const: BTreeSet<ShadowConst>, ) -> SdResult<Shadow>

pub fn cargo_rerun_if_env_changed(&self)

Request Cargo to re-run the build script if any environment variable observed by this Shadow configuration changes.

pub fn cargo_rerun_env_inject(&self, env: &[&str])

Request Cargo to re-run the build script if any of the specified environment variables change. This function is not influenced by this Shadow configuration.

Trait Implementations

impl Debug for Shadow

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.