| Program |
::= |
Command |
Program |
| Command |
::= |
V-Name := Expression |
AssignCommand |
|
| Identifier ( Expression ) |
CallCommand |
|
| if Expression then Command else Command |
IfCommand |
|
| while Expression do Command |
WhileCommand |
|
| let Declaration in Command |
LetCommand |
|
| begin Command end |
Command |
|
| Command ; Command |
SequentialCommand |
| Expression |
::= |
Integer-Literal |
IntegerExpression |
|
| V-Name |
VNameExpression |
|
| Operator Expression |
UnaryExpression |
|
| Expression Operator Expression |
BinaryExpression |
| V-Name |
::= |
Identifier |
SimpleVName |
| Declaration |
::= |
const Identifier ~ Expression |
ConstDeclaration |
|
| var Identifier : Type-denoter |
VarDeclaration |
|
| Declaration ; Declaration |
SequentialDeclaration |
| Type-denoter |
::= |
Identifier |
SimpleTypeDenoter |