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.
96 lines
2.3 KiB
Go
96 lines
2.3 KiB
Go
package ast
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import (
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"strings"
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)
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// VarDecl is node represents a variable declaration.
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type VarDecl struct {
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Addr Address
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Parent Address
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Pos Position
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Position2 string
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Name string
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Type string
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Type2 string
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IsExtern bool
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IsUsed bool
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IsRange bool
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IsCInit bool
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IsReferenced bool
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IsStatic bool
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IsRegister bool
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ChildNodes []Node
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}
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func parseVarDecl(line string) Node {
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groups := groupsFromRegex(
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`(?:prev (?P<prev>0x[0-9a-f]+) )?
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(?:parent (?P<parent>0x[0-9a-f]+) )?
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<(?P<position>.*)>(?P<position2> .+:\d+)?
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(?P<used> used)?
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(?P<range> range)?
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(?P<referenced> referenced)?
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(?P<name> \w+)?
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'(?P<type>.+?)'
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(?P<type2>:'.*?')?
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(?P<extern> extern)?
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(?P<static> static)?
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(?P<cinit> cinit)?
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(?P<register> register)?
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(.*)
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`,
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line,
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)
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if groups == nil {
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return &Unknown{}
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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 &VarDecl{
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Addr: ParseAddress(groups["address"]),
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Parent: ParseAddress(groups["parent"]),
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Pos: NewPositionFromString(groups["position"]),
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Position2: strings.TrimSpace(groups["position2"]),
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Name: strings.TrimSpace(groups["name"]),
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Type: groups["type"],
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Type2: type2,
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IsExtern: len(groups["extern"]) > 0,
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IsUsed: len(groups["used"]) > 0,
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IsRange: len(groups["range"]) > 0,
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IsCInit: len(groups["cinit"]) > 0,
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IsReferenced: len(groups["referenced"]) > 0,
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IsStatic: len(groups["static"]) > 0,
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IsRegister: len(groups["register"]) > 0,
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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 *VarDecl) 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 *VarDecl) 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 *VarDecl) 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 *VarDecl) Position() Position {
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return n.Pos
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}
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