More errors

Author: Affie

src/errors.jl

@@ -1,19 +1,60 @@
 """
-    DFGLabelError(label)
+    DFGLabelNotFoundError(label, available)
 
-Label not found.
+Error thrown when a requested label is not found in the factor graph.
+
+# Arguments
+- `label`: The label that was not found.
+- `available`: The list of available labels.
 """
-struct DFGLabelError <: Exception
+struct DFGLabelNotFoundError <: Exception
     label::Any
     available::Any
 end
 
-DFGLabelError(key::T) where {T} = DFGLabelError(key, T[])
+DFGLabelNotFoundError(label::T) where {T} = DFGLabelNotFoundError(label, T[])
 
-function Base.showerror(io::IO, ex::DFGLabelError)
-    print(io, "DFGLabelError: label ", ex.label, " not found.")
+function Base.showerror(io::IO, ex::DFGLabelNotFoundError)
+    print(io, "DFGLabelNotFoundError: label ", ex.label, " not found.")
     if !isempty(ex.available)
         println(io, " Available labels:")
         show(io, ex.available)
     end
 end
+
+"""
+    DFGLabelExistsError(label)
+
+Error thrown when attempting to add a label that already exists in the factor graph.
+
+# Arguments
+- `label`: The label that already exists.
+"""
+struct DFGLabelExistsError <: Exception
+    label::Any
+end
+
+function Base.showerror(io::IO, ex::DFGLabelExistsError)
+    return print(
+        io,
+        "DFGLabelExistsError: label ",
+        ex.label,
+        " already exists in the factor graph.",
+    )
+end
+
+"""
+    DFGSerializationError(msg)
+
+Error thrown when serialization or deserialization fails.
+
+# Arguments
+- `msg`: Description of the serialization error.
+"""
+struct DFGSerializationError <: Exception
+    msg::String
+end
+
+function Base.showerror(io::IO, ex::DFGSerializationError)
+    return print(io, "DFGSerializationError: ", ex.msg)
+end