Struct Engine 

pub struct Engine {
    pub rules: Vec<CompiledRule>,
    pub policy: Policy,
}

Fields

rules: Vec<CompiledRule>

policy: Policy

Implementations

impl Engine

pub fn from_yaml(raw: &str) -> Result<Self>

Load a Shield ruleset from a YAML string. Returns an error on malformed YAML or regex compilation failure.

pub fn extend_from_yaml(&mut self, raw: &str) -> Result<()>

Merge an additional rule pack (e.g. the optional ATR community pack) into an already-loaded engine. The pack’s policy: block, if any, is IGNORED – policy always comes from the primary shieldset. Duplicate rule ids across packs are an error: silent shadowing would make composite scoring double-count.

pub fn builtin_default() -> Self

Bundled defaults – the same YAML used by the enterprise build, embedded at compile time so the binary always has some ruleset.

pub fn evaluate( &self, tool: &str, params: &Value, adj: Adjustments, ) -> Evaluation

Evaluate a tool call. Returns the full evaluation (which rules fired, points, raw vs composite vs final severity). The caller turns this into a Decision via decide_tool_call.

pub fn evaluate_text(&self, text: &str, adj: Adjustments) -> Evaluation

Evaluate an LLM response body.

pub fn evaluate_scoped_text( &self, scope: Scope, tool: Option<&str>, text: &str, adj: Adjustments, ) -> Evaluation

Evaluate free text against the rules of one scope. tool is the tool the text belongs to (the described tool for Scope::ToolDescription, the called tool for Scope::ToolResult); rules with a tool: whitelist only fire when it matches.

Trait Implementations

impl Debug for Engine

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

Formats the value using the given formatter.