94 lines
2.1 KiB
Go
94 lines
2.1 KiB
Go
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package ast
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// MemberExpr is expression.
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type MemberExpr struct {
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Addr Address
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Pos Position
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Type string
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Type2 string
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Name string
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IsLvalue bool
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IsBitfield bool
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Address2 string
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IsPointer bool
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ChildNodes []Node
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}
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func parseMemberExpr(line string) *MemberExpr {
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groups := groupsFromRegex(
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`<(?P<position>.*)>
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'(?P<type>.*?)'
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(?P<type2>:'.*?')?
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(?P<lvalue> lvalue)?
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(?P<bitfield> bitfield)?
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(?P<pointer>[->.]+)
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(?P<name>\w+)?
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(?P<address2>[0-9a-fx]+)`,
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line,
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)
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type2 := groups["type2"]
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if type2 != "" {
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type2 = type2[2 : len(type2)-1]
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}
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return &MemberExpr{
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Addr: ParseAddress(groups["address"]),
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Pos: NewPositionFromString(groups["position"]),
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Type: groups["type"],
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Type2: type2,
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IsPointer: groups["pointer"] == "->",
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Name: groups["name"],
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IsLvalue: len(groups["lvalue"]) > 0,
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IsBitfield: len(groups["bitfield"]) > 0,
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Address2: groups["address2"],
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ChildNodes: []Node{},
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}
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}
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// AddChild adds a new child node. Child nodes can then be accessed with the
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// Children attribute.
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func (n *MemberExpr) AddChild(node Node) {
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n.ChildNodes = append(n.ChildNodes, node)
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}
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// GetDeclRefExpr gets DeclRefExpr from MemberExpr, or nil if there is no
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// DeclRefExpr
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func (n *MemberExpr) GetDeclRefExpr() *DeclRefExpr {
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for _, child := range n.ChildNodes {
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res, ok := child.(*DeclRefExpr)
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if ok {
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return res
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}
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cast, ok := child.(*ImplicitCastExpr)
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if ok {
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res, ok = cast.ChildNodes[0].(*DeclRefExpr)
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if ok {
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return res
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}
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}
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}
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// There is no DeclRefExpr
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return nil
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}
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// Address returns the numeric address of the node. See the documentation for
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// the Address type for more information.
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func (n *MemberExpr) Address() Address {
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return n.Addr
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}
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// Children returns the child nodes. If this node does not have any children or
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// this node does not support children it will always return an empty slice.
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func (n *MemberExpr) Children() []Node {
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return n.ChildNodes
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}
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// Position returns the position in the original source code.
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func (n *MemberExpr) Position() Position {
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return n.Pos
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}
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