42 lines
1.0 KiB
Plaintext
42 lines
1.0 KiB
Plaintext
Language "IBAFlang"
|
|
|
|
|
|
Syntax Stmt:stmt ::= type id '=' exp ';'
|
|
| 'print' '(' exp ')' ';'
|
|
// | '{' stmt '}'
|
|
| stmt stmt
|
|
|
|
|
|
Syntax Typ:type ::= 'int'
|
|
| 'bool'
|
|
| id
|
|
|
|
Semantics execute[[ _:stmt ]] : => null
|
|
|
|
Rule execute[[ Typ Id '=' Exp ';' ]] = assign(bound(id[[ Id ]]), eval-exp[[ Exp ]])
|
|
Rule execute[[ 'print' '(' Exp ')' ';' ]] = print(eval-exp[[ Exp ]])
|
|
|
|
//Rule execute[[ '{' Stmt '}' ]] = scope(
|
|
// collateral(collect-declared-vars[[ Stmt ]]),
|
|
// execute[[ Stmt ]]
|
|
//)
|
|
|
|
Rule execute[[ Stmt1 Stmt2 ]] = sequential(execute[[ Stmt1 ]], execute[[ Stmt2 ]])
|
|
|
|
|
|
|
|
//Semantics collect-declared-vars[[ _:stmt ]] : (=>environments)*
|
|
//
|
|
//
|
|
//Rule collect-declared-vars[[ Typ Id '=' Exp ';' ]] =
|
|
// bind(
|
|
// \"Id\",
|
|
// allocate-initialised-variable(
|
|
// integers, //TODO: use type
|
|
// eval-exp[[ Exp ]]
|
|
// )
|
|
// )
|
|
//Rule collect-declared-vars[[ Stmt ]] = null
|
|
//Rule collect-declared-vars[[ Stmt1 Stmt2 ]] = (collect-declared-vars[[ Stmt1 ]], collect-declared-vars[[ Stmt2 ]]))
|
|
|