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dc813e35fc
* More consistent document crate names * Fix fmt * Fix ASCII art diagrams * rename document-graph to document-graph-storage
51 lines
2.3 KiB
Rust
51 lines
2.3 KiB
Rust
//! Unified error type for the `document-format` crate.
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//!
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//! Every fallible [`crate::Gdd`] method returns [`Result<T>`]. Variants are grouped by failure
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//! domain (container I/O, codec, CRDT, format validation, export)
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use document_container::ContainerError;
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#[cfg(feature = "conversion")]
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use document_graph_storage::CommitError;
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use document_graph_storage::CrdtError;
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use graphene_resource::ResourceHash;
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use crate::codec::CodecError;
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use crate::io::ReadError;
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/// Crate-wide result alias.
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pub type Result<T> = std::result::Result<T, Error>;
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/// Anything that can go wrong reading, mutating, or exporting a `.gdd` document. Per the format's
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/// load-time policy, any unexpected condition is a hard error rather than a silent fallback.
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#[derive(Debug, thiserror::Error)]
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pub enum Error {
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/// Working-copy container I/O failed (read, write, or path validation).
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#[error("container error: {0}")]
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Container(#[from] ContainerError),
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/// A typed payload could not be located or read from the container.
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#[error("read error: {0}")]
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Read(#[from] ReadError),
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/// A payload failed to encode or decode in its recorded codec.
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#[error("codec error: {0}")]
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Codec(#[from] CodecError),
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/// A CRDT operation was rejected while replaying a hot op or moving the undo/redo cursor.
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#[error("CRDT error: {0}")]
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Crdt(#[from] CrdtError),
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/// Staging a runtime snapshot into the session failed (conversion or CRDT apply).
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#[cfg(feature = "conversion")]
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#[error("commit error: {0}")]
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Commit(#[from] CommitError),
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/// The manifest's `format` field is not the `.gdd` magic, so this is not a `.gdd` document.
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#[error("not a .gdd document (manifest format = {found:?}, expected {expected:?})")]
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WrongFormat { found: String, expected: &'static str },
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/// The manifest declares a format version newer than this build can open.
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#[error("unsupported format version: found {found}, max supported {max_supported}")]
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UnsupportedVersion { found: u32, max_supported: u32 },
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/// The requested export options are incoherent (e.g. neither registry nor history included).
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#[error("invalid export options: {0}")]
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InvalidExportOptions(&'static str),
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/// An export marked a resource for embedding but its bytes were absent from the byte store.
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#[error("embedded resource {0} missing from the byte store")]
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MissingResource(ResourceHash),
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}
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