Struct ParsedParamAttrs 

pub struct ParsedParamAttrs {
    pub wire_name: Option<String>,
    pub location: Option<ParamLocation>,
    pub default_value: Option<String>,
    pub short_flag: Option<char>,
    pub help_text: Option<String>,
    pub positional: bool,
    pub env_var: Option<String>,
    pub file_key: Option<String>,
    pub nested: bool,
    pub env_prefix: Option<String>,
}

Parsed result of #[param(...)] attributes.

Fields

wire_name: Option<String>

location: Option<ParamLocation>

default_value: Option<String>

short_flag: Option<char>

help_text: Option<String>

positional: bool

env_var: Option<String>

Environment variable name (from #[param(env = "VAR")]). Used by #[derive(Config)].

file_key: Option<String>

Config file key override (from #[param(file_key = "a.b.c")]). Used by #[derive(Config)].

nested: bool

Marks a field as a nested Config sub-struct (from #[param(nested)]).

The field’s type must also #[derive(Config)]. TOML loading delegates to the child’s Config::load, using the field name (or file_key) as the sub-table name. Env var loading narrows the prefix with the field name.

env_prefix: Option<String>

Env-var prefix override for a nested field (from #[param(env_prefix = "SEARCH")]).

When set, env vars for the child struct use {env_prefix}_{CHILD_FIELD} instead of {parent_prefix}_{field_name}_{CHILD_FIELD}. Only meaningful with nested.

Trait Implementations

impl Clone for ParsedParamAttrs

fn clone(&self) -> ParsedParamAttrs

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ParsedParamAttrs

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

Formats the value using the given formatter.

impl Default for ParsedParamAttrs

fn default() -> ParsedParamAttrs

Returns the “default value” for a type.