create element builder and refactor api

1 files changed, 25 insertions, 1 deletions

diff --git a/src/error.rs b/src/error.rs
index 85b5d70..dd8ea17 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,4 +1,8 @@
-use std::{num::ParseIntError, str::Utf8Error};
+use std::{
+    collections::{HashMap, VecDeque},
+    num::ParseIntError,
+    str::{FromStr, Utf8Error},
+};
 
 use crate::{
     element::{Content, Name, NamespaceDeclaration},
@@ -6,6 +10,19 @@ use crate::{
 };
 
 #[derive(Debug)]
+pub enum DeserializeError {
+    FromStr(String),
+    UnexpectedAttributes(HashMap<Name, String>),
+    UnexpectedContent(VecDeque<Content>),
+    MissingAttribute(Name),
+    IncorrectName(String),
+    IncorrectNamespace(String),
+    Unqualified,
+    MissingChild,
+    MissingValue,
+}
+
+#[derive(Debug)]
 pub enum Error {
     ReadError(std::io::Error),
     Utf8Error(Utf8Error),
@@ -26,6 +43,13 @@ pub enum Error {
     UnexpectedNumberOfContents(usize),
     UnexpectedContent(Content),
     UnexpectedElement(Name),
+    Deserialize(DeserializeError),
+}
+
+impl From<DeserializeError> for Error {
+    fn from(e: DeserializeError) -> Self {
+        Self::Deserialize(e)
+    }
 }
 
 impl From<std::io::Error> for Error {