Method exprN

types/builder.go:311–350

()

}

func (r *reader) exprN() Value {
	b := r.b
	typ := r.typ()
	switch tag := r.tag().(type) {
	case *CallExpr:
		var c Call
		r.setCall(&c.Call)
		c.typ = typ
		return b.emit(&c)

	case *IndexExpr:
		x, pos, index := r.expr(), r.pos(), r.expr()
		lookup := &Lookup{
			X:       x,
			Index:   b.emitConv(index, x.Type().Underlying().(*Map).Key()),
			CommaOk: true,
		}
		lookup.setType(typ)
		lookup.setPos(pos)
		return b.emit(lookup)

	case *AssertExpr:
		x, pos, typ := r.expr(), r.pos(), r.typ()
		return b.emitTypeTest(x, typ, pos)

	case *Operation:
		pos, x := r.pos(), r.expr()
		unop := &UnOp{
			Op:      Recv,
			X:       x,
			CommaOk: true,
		}
		unop.setType(typ)
		unop.setPos(pos)
		return b.emit(unop)

	default:
		panic(fmt.Sprintf("exprN(%T) in %s", tag, b.Fn))
	}
}

// builtin emits to fn SSA instructions to implement a call to the
// built-in function obj with the specified arguments