Struct RuleBuilder 

pub struct RuleBuilder { /* private fields */ }

Builder for constructing flag rules with multiple clauses.

Rules are evaluated in the order they were added to the flag. The first matching rule wins. Rules are evaluated after individual context targets but before the fallthrough variation.

Implementations

impl RuleBuilder

pub fn and_match<I>(self, attribute: impl Into<String>, values: I) -> Self

where I: IntoIterator<Item = AttributeValue>,

Adds another clause to the current rule for user contexts.

Multiple clauses in a rule have AND semantics - all must match for the rule to match.

pub fn and_match_context<I>( self, context_kind: Kind, attribute: impl Into<String>, values: I, ) -> Self

where I: IntoIterator<Item = AttributeValue>,

Adds another clause to the current rule for a context of the specified kind.

Multiple clauses in a rule have AND semantics - all must match for the rule to match.

pub fn and_not_match<I>(self, attribute: impl Into<String>, values: I) -> Self

where I: IntoIterator<Item = AttributeValue>,

Adds a negated clause to the current rule for user contexts.

The clause must NOT match any of the values for the rule to match.

pub fn and_not_match_context<I>( self, context_kind: Kind, attribute: impl Into<String>, values: I, ) -> Self

where I: IntoIterator<Item = AttributeValue>,

Adds a negated clause to the current rule for a context of the specified kind.

The clause must NOT match any of the values for the rule to match.

pub fn with_id(self, rule_id: impl Into<String>) -> Self

Sets a custom rule ID for this rule.

By default, rules are assigned auto-generated IDs like “rule0”, “rule1”, etc. Use this method to override with a custom ID.

pub fn then_return(self, variation: bool) -> FlagBuilder

Completes the rule configuration for a boolean flag.

This method adds the completed rule to the flag and returns control to the flag builder.

pub fn then_return_index(self, variation: usize) -> FlagBuilder

Completes the rule configuration with a variation index.

This method adds the completed rule to the flag and returns control to the flag builder.