it back from the wire format is <firstterm>unmarshaling</firstterm>.
</para>
- <sect2 id="message-protocol-signatures">
- <title>Type Signatures</title>
+ <para>
+ The D-Bus protocol does not include type tags in the marshaled data; a
+ block of marshaled values must have a known <firstterm>type
+ signature</firstterm>. The type signature is made up of <firstterm>type
+ codes</firstterm>. A type code is an ASCII character representing the
+ type of a value. Because ASCII characters are used, the type signature
+ will always form a valid ASCII string. A simple string compare
+ determines whether two type signatures are equivalent.
+ </para>
- <para>
- The D-Bus protocol does not include type tags in the marshaled data; a
- block of marshaled values must have a known <firstterm>type
- signature</firstterm>. The type signature is made up of <firstterm>type
- codes</firstterm>. A type code is an ASCII character representing the
- type of a value. Because ASCII characters are used, the type signature
- will always form a valid ASCII string. A simple string compare
- determines whether two type signatures are equivalent.
- </para>
+ <sect2 id="basic-types">
+ <title>Basic types</title>
<para>
As a simple example, the type code for 32-bit integer (<literal>INT32</literal>) is
<literal>INT32</literal> in this example. To marshal and unmarshal
basic types, you simply read one value from the data
block corresponding to each type code in the signature.
+ </para>
+ </sect2>
+
+ <sect2 id="container-types">
+ <title>Container types</title>
+
+ <para>
In addition to basic types, there are four <firstterm>container</firstterm>
types: <literal>STRUCT</literal>, <literal>ARRAY</literal>, <literal>VARIANT</literal>,
and <literal>DICT_ENTRY</literal>.
In most languages, an array of dict entry would be represented as a
map, hash table, or dict object.
</para>
+ </sect2>
+
+ <sect2>
+ <title>Summary of types</title>
<para>
The following table summarizes the D-Bus types.