start: instruction*

instruction: load_xml|all_endpoint_rule|specific_endpoint_rule

load_xml: "load" ESCAPED_STRING ";"

all_endpoint_rule: "all" "endpoints" "{" required_global_attribute* "}"

specific_endpoint_rule: "endpoint" integer "{" required_server_cluster* "}"

required_global_attribute: "require" "global" "attribute" id "=" integer ";"

required_server_cluster: "require" "server" "cluster" (id|POSITIVE_INTEGER|HEX_INTEGER) ";"

integer: positive_integer | negative_integer

positive_integer: POSITIVE_INTEGER | HEX_INTEGER
negative_integer: "-" positive_integer

id: ID

POSITIVE_INTEGER: /\d+/ 
HEX_INTEGER: /0x[A-Fa-f0-9]+/ 
ID: /[a-zA-Z_][a-zA-Z0-9_]*/

%import common.ESCAPED_STRING
%import common.WS
%import common.C_COMMENT
%import common.CPP_COMMENT
%ignore WS
%ignore C_COMMENT
%ignore CPP_COMMENT