Greg
d8552bcf9d
config directives. Do not panic on failed regexp in AST parsing,
instead return &ast.Unknown{} for further debugging. Add debutast:
directive to print context when AST nodes are not recognized.
55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package ast
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import (
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//"strings"
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)
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// Unknown is node represents an unknown node.
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type Unknown struct {
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Name string
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Addr Address
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Pos Position
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Content string
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ChildNodes []Node
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}
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func parseUnknown(name, line string) *Unknown {
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groups := groupsFromRegex(
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`(?:prev (?P<prev>0x[0-9a-f]+) )?
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<(?P<position>.*<scratch space>.*?|.*<built-in>.*?|.*<invalid sloc>|.*?)>
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(?P<content>.*)`,
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line,
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)
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return &Unknown{
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Name: name,
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Addr: ParseAddress(groups["address"]),
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Pos: NewPositionFromString(groups["position"]),
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Content: groups["content"],
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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 *Unknown) AddChild(node Node) {
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n.ChildNodes = append(n.ChildNodes, node)
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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 *Unknown) 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 *Unknown) 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 *Unknown) Position() Position {
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return n.Pos
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}
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