Public declaration syntax from forge-rs/crates/forge-core/src/brew.rs
Original source SHA-256: b415caae9da8515cb2ba204ae56c83e70e9987dca79986f81bde4018be81cd31
Function bodies and constant values are omitted. This is not the complete implementation.

Source line 54
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
pub struct BrewId(String);

Source line 58
pub fn new(id: impl Into<String>) -> Self;

Source line 63
pub fn as_str(&self) -> &str;

Source line 88
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
pub struct NodeId(String);

Source line 92
pub fn new(id: impl Into<String>) -> Self;

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pub fn as_str(&self) -> &str;

Source line 121
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
pub struct BrewVersion(String);

Source line 125
pub fn new(version: impl Into<String>) -> Self;

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pub fn as_str(&self) -> &str;

Source line 159
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum JoinMode {
    /// Wait for all branches to complete. Fail if any branch fails.
    AwaitAll,
    /// Return as soon as one branch completes successfully.
    FirstSuccess,
    /// Return as soon as N branches complete successfully.
    FirstN(u32),
}

Source line 185
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(tag = "type", rename_all = "snake_case")]
pub enum BrewNodeKind {
    /// An agent step: send a prompt to a model, optionally with tools.
    ///
    /// Maps to a single invocation of the Forge agent execution loop.
    AgentStep {
        /// Provider reference (e.g., `openai:gpt-4o`). Symbolic -- resolved
        /// during the freeze step.
        provider: ProviderRef,
        /// Optional system prompt for this step.
        #[serde(default, skip_serializing_if = "Option::is_none")]
        system_prompt: Option<String>,
        /// Maximum tool-loop steps for this agent invocation.
        max_steps: u32,
    },

    /// A direct tool invocation without an LLM in the loop.
    ToolInvocation {
        /// Tool identifier. Must resolve to a registered tool at freeze time.
        tool_id: String,
        /// Tool tier classification.
        tier: ToolTier,
    },

    /// An MCP tool call routed through a connected MCP server.
    McpCall {
        /// MCP server identifier (URI or alias).
        server_id: String,
        /// MCP tool name on the remote server.
        tool_name: String,
    },

    /// A web operation (HTTP request, browser action, etc.).
    WebOperation {
        /// The operation kind identifier.
        operation: String,
    },

    /// A conditional branch that routes to one of two targets based on a
    /// condition expression.
    ConditionalBranch {
        /// JSONPath or simple expression evaluated against incoming data.
        condition_expr: String,
        /// The node to route to when the condition is true.
        true_target: NodeId,
        /// The node to route to when the condition is false.
        false_target: NodeId,
    },

    /// A parallel fork that spawns concurrent execution of multiple
    /// downstream paths, then joins their results.
    ParallelFork {
        /// The set of branch targets to execute concurrently.
        branches: Vec<NodeId>,
        /// Strategy for joining parallel results.
        join_mode: JoinMode,
    },

    /// A reference to another brew, enabling composition. The referenced
    /// brew is resolved and inlined at freeze time.
    SubBrewRef {
        /// The referenced brew's identifier.
        brew_id: BrewId,
    },

    /// A human-in-the-loop checkpoint that suspends execution until a
    /// human provides approval or input.
    HumanCheckpoint {
        /// The prompt displayed to the human reviewer.
        prompt: String,
        /// Maximum wait time in milliseconds before timeout. `None` means
        /// wait indefinitely.
        #[serde(default, skip_serializing_if = "Option::is_none")]
        timeout_ms: Option<u64>,
    },
}

Source line 285
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BrewNode {
/// Stable identifier within this brew.

pub id: NodeId,
/// The node's execution semantics.

pub kind: BrewNodeKind,
/// Arbitrary key-value metadata for tooling and visualization.

#[serde(default, skip_serializing_if = "BTreeMap::is_empty")]
pub metadata: BTreeMap<String, String>
}

Source line 319
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum BrewEdgeKind {
    /// Data flow: output of source is fed as input to target.
    DataFlow,
    /// Control flow: target executes after source completes.
    ControlFlow,
    /// Error flow: target executes when source fails.
    ErrorFlow,
}

Source line 348
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
pub struct BrewEdge {
/// Source node.

pub from: NodeId,
/// Target node.

pub to: NodeId,
/// Edge semantics.

pub kind: BrewEdgeKind
}

Source line 397
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Brew {
/// Unique identifier for this brew definition.

pub id: BrewId,
/// Semantic version of this brew definition.

pub version: BrewVersion,
/// The graph's nodes, keyed by stable node ID.

/// `BTreeMap` ensures deterministic serialization order.

pub nodes: BTreeMap<NodeId, BrewNode>,
/// The graph's edges. `BTreeSet` ensures deterministic ordering

/// by `(from, to, kind)`.

pub edges: BTreeSet<BrewEdge>,
/// Designated entry nodes. Execution begins at these nodes.

pub entry_nodes: Vec<NodeId>,
/// Designated exit nodes. When all exit nodes complete, the brew

/// execution is complete.

pub exit_nodes: Vec<NodeId>,
/// Optional model topology for this brew. When set, it provides

/// the multi-model slot configuration for agent steps.

#[serde(default, skip_serializing_if = "Option::is_none")]
pub topology: Option<ModelTopology>
}