Formal Specification Based Automatic Test Generation for Embedded Network Systems

Pseudocode 8

BNF for function and requirement declerations.

function-file-declaration::= “Bundled” class-name extern-declaration function-declaration

function-declaration::=

  “Function” function-name

    (constant-declaration  ∣ data-declaration ∣ variable-declaration ∣ timer-declaration)*

    “Require” (requirement-declaration “;”)+

requirement-declaration::= invariant ∣ transition-requirement

invariant::= expr

transition-requirement::= pre-condition “:” event “:”

    (post-condition ∣ (action (“,” ∣ action)*)  ∣ (post-condition “,” (action (“,” ∣ action)*)))

precondition::= expr

postcondition::= expr

event::= channel-name “?” expr ∣ timer-name “?” “over” ∣ “null”

action::= channel-name “!” expr  ∣ timer-name “!” “clear”  ∣ timer-name “!” “start”