Ableitungsbeispiel für Oberon II

Hallo.om

MODULE Hallo; IMPORT Write; BEGIN Write.Line("Hallo, wie geht es?"); END Hallo.

⟨ ActualParameters ⟩ ---> ``('' [⟨ ExpList ⟩] ``)''

---> ``('' ⟨ ExpList ⟩ ``)''

---> ``('' ⟨ Expression ⟩ ``)''

---> ``('' ⟨ SimpleExpression ⟩ ``)''

---> ``('' ⟨ Term ⟩ ``)''

---> ``('' ⟨ Factor ⟩ ``)''

---> ``('' ⟨ String ⟩ ``)''

⟨ CompilationUnit ⟩ ---> ``MODULE'' ⟨ Ident ⟩ ``;'' ⟨ ImportList ⟩
``BEGIN'' ⟨ StatementSequence ⟩
``END'' ⟨ Ident ⟩ ``.''

---> ``MODULE'' ⟨ Ident ⟩ ``;''
``IMPORT'' ⟨ Ident ⟩ ``;''
``BEGIN''
⟨ Ident ⟩ ``.'' ⟨ Ident ⟩ ``('' ⟨ String ⟩ ``)''
``END'' ⟨ Ident ⟩ ``.''

⟨ ActualParameters ⟩	--->	```(`'' [⟨ ExpList ⟩] ```)`''
	--->	```(`'' ⟨ ExpList ⟩ ```)`''
	--->	```(`'' ⟨ Expression ⟩ ```)`''
	--->	```(`'' ⟨ SimpleExpression ⟩ ```)`''
	--->	```(`'' ⟨ Term ⟩ ```)`''
	--->	```(`'' ⟨ Factor ⟩ ```)`''
	--->	```(`'' ⟨ String ⟩ ```)`''
⟨ CompilationUnit ⟩	--->	``MODULE'' ⟨ Ident ⟩ ```;`'' ⟨ ImportList ⟩
		``BEGIN'' ⟨ StatementSequence ⟩
		``END'' ⟨ Ident ⟩ ```.`''
	--->	``MODULE'' ⟨ Ident ⟩ ```;`''
		``IMPORT'' ⟨ Ident ⟩ ```;`''
		``BEGIN''
		⟨ Ident ⟩ ```.`'' ⟨ Ident ⟩ ```(`'' ⟨ String ⟩ ```)`''
		``END'' ⟨ Ident ⟩ ```.`''