5 Graph Description Language (GDL) - Absint
5 Graph Description Language (GDL) - Absint
5 Graph Description Language (GDL) - Absint
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egion_attribute : “source” “:” string_list<br />
| “target” “:” string_list<br />
| “state” “:” enum_status<br />
| “class” “:” integer_list<br />
| “range” “:” integer_value<br />
node_attribute_name : any attribute listed in section 5.8<br />
edge_attribute_name : any attribute listed in section 5.9<br />
attribute_value : integer_value<br />
| float_value<br />
| string_value<br />
| enum_value<br />
integer_list : (integer_value) ∗<br />
integer_value : any integer constant in C style<br />
float_value : any float constant in C style<br />
string_list : (string_value) ∗<br />
string_value : “"” (character) ∗ “"”<br />
enum_value : any possible key word value for a graph, node or edge attribute<br />
enum_status : any possible key word value for the graph attribute state (see p. 85)<br />
character : any printable ASCII character<br />
Note that graph:, node: and edge:, etc. are keywords. Therefore, no whitespace 4 character<br />
is allowed before these colons.<br />
Integers are sequences of digits. Floating point numbers consist of a sequence of digits followed<br />
by a dot ‘.’, followed by a sequence of digits. C style comments (/* ... */) and C++ style<br />
comments (//...) are allowed.<br />
4 A whitespace is a blank, tab, linefeed or newline character<br />
113
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