Replace error code with macro for code generation

libimagstore/src/error.rs

@@ -1,138 +1,45 @@
 use std::error::Error;
 use std::fmt::Error as FmtError;
-use std::fmt::{Debug, Display, Formatter};
+use std::fmt::{Display, Formatter};
-use std::fmt;
 use std::convert::From;
 
-/**
+generate_error_types!(StoreError, StoreErrorKind,
- * Kind of store error
+    ConfigurationError      => "Store Configuration Error",
- */
+    FileError               => "File Error",
-#[derive(Clone, Copy, Debug, PartialEq)]
+    IoError                 => "IO Error",
-pub enum StoreErrorKind {
+    IdLocked                => "ID locked",
-    ConfigurationError,
+    IdNotFound              => "ID not found",
-    FileError,
+    OutOfMemory             => "Out of Memory",
-    IdLocked,
+    FileNotFound            => "File corresponding to ID not found",
-    IdNotFound,
+    FileNotCreated          => "File corresponding to ID could not be created",
-    OutOfMemory,
+    StorePathExists         => "Store path exists",
-    FileNotFound,
+    StorePathCreate         => "Store path create",
-    FileNotCreated,
+    LockError               => "Error locking datastructure",
-    IoError,
+    LockPoisoned            => "The internal Store Lock has been poisoned",
-    StorePathExists,
+    EntryAlreadyBorrowed    => "Entry is already borrowed",
-    StorePathCreate,
+    EntryAlreadyExists      => "Entry already exists",
-    LockError,
+    MalformedEntry          => "Entry has invalid formatting, missing header",
-    LockPoisoned,
+    HeaderPathSyntaxError   => "Syntax error in accessor string",
-    EntryAlreadyBorrowed,
+    HeaderPathTypeFailure   => "Header has wrong type for path",
-    EntryAlreadyExists,
+    HeaderKeyNotFound       => "Header Key not found",
-    MalformedEntry,
+    HeaderTypeFailure       => "Header type is wrong",
-    HeaderPathSyntaxError,
+    HookRegisterError       => "Hook register error",
-    HeaderPathTypeFailure,
+    AspectNameNotFoundError => "Aspect name not found",
-    HeaderKeyNotFound,
+    HookExecutionError      => "Hook execution error",
-    HeaderTypeFailure,
+    PreHookExecuteError     => "Pre-Hook execution error",
-    HookRegisterError,
+    PostHookExecuteError    => "Post-Hook execution error",
-    AspectNameNotFoundError,
+    StorePathLacksVersion   => "The supplied store path has no version part",
-    HookExecutionError,
+    GlobError               => "glob() error",
-    PreHookExecuteError,
+    EncodingError           => "Encoding error"
-    PostHookExecuteError,
+);
-    StorePathLacksVersion,
-    GlobError,
-    EncodingError,
-        // maybe more
-}
 
-fn store_error_type_as_str(e: &StoreErrorKind) -> &'static str {
+generate_error_types!(ParserError, ParserErrorKind,
-    match *e {
+    TOMLParserErrors    => "Several TOML-Parser-Errors",
-        StoreErrorKind::ConfigurationError => "Store Configuration Error",
+    MissingMainSection  => "Missing main section",
-        StoreErrorKind::FileError       |
+    MissingVersionInfo  => "Missing version information in main section",
-        StoreErrorKind::IoError         => "File Error",
+    NonTableInBaseTable => "A non-table was found in the base table",
-        StoreErrorKind::IdLocked        => "ID locked",
+    HeaderInconsistency => "The header is inconsistent"
-        StoreErrorKind::IdNotFound      => "ID not found",
+);
-        StoreErrorKind::OutOfMemory     => "Out of Memory",
-        StoreErrorKind::FileNotFound    => "File corresponding to ID not found",
-        StoreErrorKind::FileNotCreated  => "File corresponding to ID could not be created",
-        StoreErrorKind::StorePathExists |
-        StoreErrorKind::StorePathCreate => "Store path create",
-        StoreErrorKind::LockError       => "Error locking datastructure",
-        StoreErrorKind::LockPoisoned
-            => "The internal Store Lock has been poisoned",
-        StoreErrorKind::EntryAlreadyBorrowed => "Entry is already borrowed",
-        StoreErrorKind::EntryAlreadyExists   => "Entry already exists",
-        StoreErrorKind::MalformedEntry => "Entry has invalid formatting, missing header",
-        StoreErrorKind::HeaderPathSyntaxError => "Syntax error in accessor string",
-        StoreErrorKind::HeaderPathTypeFailure => "Header has wrong type for path",
-        StoreErrorKind::HeaderKeyNotFound     => "Header Key not found",
-        StoreErrorKind::HeaderTypeFailure     => "Header type is wrong",
-        StoreErrorKind::HookRegisterError     => "Hook register error",
-        StoreErrorKind::AspectNameNotFoundError => "Aspect name not found",
-        StoreErrorKind::HookExecutionError    => "Hook execution error",
-        StoreErrorKind::PreHookExecuteError   => "Pre-Hook execution error",
-        StoreErrorKind::PostHookExecuteError  => "Post-Hook execution error",
-        StoreErrorKind::StorePathLacksVersion => "The supplied store path has no version part",
-        StoreErrorKind::GlobError             => "glob() error",
-        StoreErrorKind::EncodingError         => "Encoding error",
-    }
-}
-
-impl Display for StoreErrorKind {
-
-    fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
-        try!(write!(fmt, "{}", store_error_type_as_str(self)));
-        Ok(())
-    }
-
-}
-
-/**
- * Store error type
- */
-#[derive(Debug)]
-pub struct StoreError {
-    err_type: StoreErrorKind,
-    cause: Option<Box<Error>>,
-}
-
-impl StoreError {
-
-    /**
-     * Build a new StoreError from an StoreErrorKind, optionally with cause
-     */
-    pub fn new(errtype: StoreErrorKind, cause: Option<Box<Error>>)
-        -> StoreError
-        {
-            StoreError {
-                err_type: errtype,
-                cause: cause,
-            }
-        }
-
-    /**
-     * Get the error type of this StoreError
-     */
-    pub fn err_type(&self) -> StoreErrorKind {
-        self.err_type
-    }
-
-}
-
-impl Display for StoreError {
-
-    fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
-        try!(write!(fmt, "[{}]", store_error_type_as_str(&self.err_type)));
-        Ok(())
-    }
-
-}
-
-impl Error for StoreError {
-
-    fn description(&self) -> &str {
-        store_error_type_as_str(&self.err_type)
-    }
-
-    fn cause(&self) -> Option<&Error> {
-        self.cause.as_ref().map(|e| &**e)
-    }
-
-}
 
 impl From<ParserError> for StoreError {
     fn from(ps: ParserError) -> StoreError {
@@ -152,64 +59,3 @@ impl From<::std::io::Error> for StoreError {
     }
 }
 
-#[derive(Clone)]
-pub enum ParserErrorKind {
-    TOMLParserErrors,
-    MissingMainSection,
-    MissingVersionInfo,
-    NonTableInBaseTable,
-    HeaderInconsistency,
-}
-
-pub struct ParserError {
-    kind: ParserErrorKind,
-    cause: Option<Box<Error>>,
-}
-
-impl ParserError {
-
-    pub fn new(k: ParserErrorKind, cause: Option<Box<Error>>) -> ParserError {
-        ParserError {
-            kind: k,
-            cause: cause,
-        }
-    }
-
-}
-
-impl Debug for ParserError {
-
-    fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
-        try!(write!(f, "{:?}", self.description()));
-        Ok(())
-    }
-
-}
-
-impl Display for ParserError {
-
-    fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
-        try!(write!(f, "{}", self.description()));
-        Ok(())
-    }
-
-}
-
-impl Error for ParserError {
-
-    fn description(&self) -> &str {
-        match self.kind {
-            ParserErrorKind::TOMLParserErrors   => "Several TOML-Parser-Errors",
-            ParserErrorKind::MissingMainSection => "Missing main section",
-            ParserErrorKind::MissingVersionInfo => "Missing version information in main section",
-            ParserErrorKind::NonTableInBaseTable => "A non-table was found in the base table",
-            ParserErrorKind::HeaderInconsistency => "The header is inconsistent",
-        }
-    }
-
-    fn cause(&self) -> Option<&Error> {
-        self.cause.as_ref().map(|e| &**e)
-    }
-
-}
-