argument nullable parameter nodes

node/argument.go

@@ -0,0 +1,30 @@
+package node
+
+import (
+	"fmt"
+	"io"
+)
+
+type Argument struct {
+	SimpleNode
+	expr     Node
+	variadic bool
+}
+
+func NewArgument(expression Node, variadic bool) Node {
+	return Argument{
+		SimpleNode{Name: "Argument", Attributes: make(map[string]string)},
+		expression,
+		variadic,
+	}
+}
+
+func (n Argument) Print(out io.Writer, indent string) {
+	fmt.Fprintf(out, "\n%v%v [- -]", indent, n.Name)
+	fmt.Fprintf(out, "\n%vvariadic: %t", indent+"  ", n.variadic)
+
+	if n.expr != nil {
+		fmt.Fprintf(out, "\n%vexpr:", indent+"  ")
+		n.expr.Print(out, indent+"    ")
+	}
+}

node/nullable.go

@@ -0,0 +1,27 @@
+package node
+
+import (
+	"fmt"
+	"io"
+)
+
+type Nullable struct {
+	SimpleNode
+	expr Node
+}
+
+func NewNullable(expression Node) Node {
+	return Nullable{
+		SimpleNode{Name: "Nullable", Attributes: make(map[string]string)},
+		expression,
+	}
+}
+
+func (n Nullable) Print(out io.Writer, indent string) {
+	fmt.Fprintf(out, "\n%v%v [- -]", indent, n.Name)
+
+	if n.expr != nil {
+		fmt.Fprintf(out, "\n%vexpr:", indent+"  ")
+		n.expr.Print(out, indent+"    ")
+	}
+}

node/parameter.go

@@ -0,0 +1,48 @@
+package node
+
+import (
+	"fmt"
+	"io"
+)
+
+type Parameter struct {
+	SimpleNode
+	variableType Node
+	variable     Node
+	defaultValue Node
+	byRef        bool
+	variadic     bool
+}
+
+func NewParameter(variableType Node, variable Node, defaultValue Node, byRef bool, variadic bool) Node {
+	return Parameter{
+		SimpleNode{Name: "Parameter", Attributes: make(map[string]string)},
+		variableType,
+		variable,
+		defaultValue,
+		byRef,
+		variadic,
+	}
+}
+
+func (n Parameter) Print(out io.Writer, indent string) {
+	fmt.Fprintf(out, "\n%v%v [- -]", indent, n.Name)
+	fmt.Fprintf(out, "\n%vbyRef: %t", indent+"  ", n.byRef)
+	fmt.Fprintf(out, "\n%vvariadic: %t", indent+"  ", n.variadic)
+
+	if n.variableType != nil {
+		fmt.Fprintf(out, "\n%vvariableType:", indent+"  ")
+		n.variableType.Print(out, indent+"    ")
+	}
+
+	if n.variable != nil {
+		fmt.Fprintf(out, "\n%vvariable:", indent+"  ")
+		n.variable.Print(out, indent+"    ")
+	}
+
+	if n.defaultValue != nil {
+		fmt.Fprintf(out, "\n%vdefaultValue:", indent+"  ")
+		n.defaultValue.Print(out, indent+"    ")
+	}
+
+}