</p>

<pre class="ebnf">
PrimaryExpr =
	Operand |
	Conversion |
	MethodExpr |
	PrimaryExpr Selector |
	PrimaryExpr Index |
	PrimaryExpr Slice |
	PrimaryExpr TypeAssertion |
	PrimaryExpr Arguments .

Selector       = "." identifier .
Index          = "[" Expression [ "," ] "]" .
Slice          = "[" [ Expression ] ":" [ Expression ] "]" |