Struct ShaResolver 

pub struct ShaResolver { /* private fields */ }

SHA resolver for Git references

Implementations

impl ShaResolver

pub fn new<P: AsRef<Path>>(repo_path: P) -> Self

Create a new SHA resolver for a repository

pub fn resolve_current_sha(&self, config: &InputConfig<'_>) -> Result<String>

Resolve the current (head) SHA based on config and environment

pub fn resolve_base_sha(&self, config: &InputConfig<'_>) -> Result<String>

Resolve the base SHA based on config and environment

pub fn merge_base(&self, commit1: &str, commit2: &str) -> Result<String>

Get merge base between two commits (for three-dot diff)

pub fn is_initial_commit(&self, sha: &str) -> Result<bool>

Check if this is an initial commit (no parent)

pub fn empty_tree_sha() -> &'static str

Get the empty tree SHA (for comparing against initial commits)

pub fn resolve_event_aware( &self, config: &InputConfig<'_>, ) -> Result<(String, String)>

Event-aware SHA resolution with 8+ decision paths

Resolution priority:

1. Explicit config (base_sha/sha) — always wins
2. Event-specific logic (PR, Push, MergeGroup, Tag, etc.)
3. Default fallback (HEAD^..HEAD)

pub fn find_previous_tag(&self, config: &InputConfig<'_>) -> Result<String>

Find the previous tag matching the configured pattern

Walks tags sorted by commit time, finds the most recent tag before HEAD that matches tags_pattern and doesn’t match tags_ignore_pattern.