diff

package

v0.3.12 Latest Latest Go to latest Published: Jun 6, 2026 License: MIT Imports: 5 Imported by: 0

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/radimsem/remindb

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Documentation ¶

Overview ¶

Package diff computes minimal deltas between the current enriched AST and a previous snapshot.

Index ¶

func CursorHash(roots []*parser.ContextNode) string
func CursorHashFlat(flat []*parser.ContextNode) string
func CursorHashForChange(prevHeadID int64, deltas []Delta) string
func CursorHashForCompile(prevHeadID int64, flat []*parser.ContextNode) string
func CursorHashForRollback(prevHeadID, targetID int64, deltas []Delta) string
func SnapshotFromNodes(roots []*parser.ContextNode) map[string]NodeState
type Delta
- func Diff(roots []*parser.ContextNode, prev map[string]NodeState) []Delta
- func DiffFlat(flat []*parser.ContextNode, prev map[string]NodeState) []Delta
type NodeState
type Op

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func CursorHash ¶

func CursorHash(roots []*parser.ContextNode) string

func CursorHashFlat ¶

func CursorHashFlat(flat []*parser.ContextNode) string

func CursorHashForChange ¶ added in v0.3.12

func CursorHashForChange(prevHeadID int64, deltas []Delta) string

Hash a change against its parent snapshot so reverting to a prior post-state still yields a unique digest. prevHeadID is the HEAD snapshot id (monotonic, never reused), so the result is unique per snapshot even when the deltas repeat.

func CursorHashForCompile ¶ added in v0.3.12

func CursorHashForCompile(prevHeadID int64, flat []*parser.ContextNode) string

Hash a compiled post-state against its parent snapshot so a compile that lands on a prior content state (edit, compile, revert, compile) still yields a unique digest. prevHeadID is the HEAD snapshot id (monotonic, never reused).

func CursorHashForRollback ¶ added in v0.3.1

func CursorHashForRollback(prevHeadID, targetID int64, deltas []Delta) string

func SnapshotFromNodes ¶

func SnapshotFromNodes(roots []*parser.ContextNode) map[string]NodeState

Build a NodeState map from enriched nodes.

Types ¶

type Delta ¶

type Delta struct {
	NodeID     string
	OldHash    string
	NewHash    string
	OldContent string
	NewContent string
	Op
}

func Diff ¶

func Diff(roots []*parser.ContextNode, prev map[string]NodeState) []Delta

Compare enriched nodes against the previous snapshot and returns one.

func DiffFlat ¶

func DiffFlat(flat []*parser.ContextNode, prev map[string]NodeState) []Delta

type NodeState ¶

type NodeState struct {
	Hash    string
	Content string
}

Node's hash+content pair from the previous snapshot.

type Op ¶

type Op string

const (
	OpAdd Op = "add"
	OpMod Op = "mod"
	OpRem Op = "rem"
)

Source Files ¶

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