71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
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package main
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import (
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"log"
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"strings"
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)
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// Protocol is a type that encapsulates all information about one
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// particular XML file. It also contains links to other protocol types
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// if this protocol imports other other extensions. The import relationship
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// is recursive.
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type Protocol struct {
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Parent *Protocol
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Name string
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ExtXName string
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ExtName string
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MajorVersion string
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MinorVersion string
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Imports []*Protocol
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Types []Type
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Requests []*Request
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}
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type Protocols []*Protocol
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func (ps Protocols) Len() int { return len(ps) }
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func (ps Protocols) Swap(i, j int) { ps[i], ps[j] = ps[j], ps[i] }
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func (ps Protocols) Less(i, j int) bool { return ps[i].ExtName < ps[j].ExtName }
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// Initialize traverses all structures, looks for 'Translation' type,
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// and looks up the real type in the namespace. It also sets the source
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// name for all relevant fields/structures.
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// This is necessary because we don't traverse the XML in order initially.
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func (p *Protocol) Initialize() {
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for _, typ := range p.Types {
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typ.Initialize(p)
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}
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for _, req := range p.Requests {
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req.Initialize(p)
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}
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}
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// PkgName returns the name of this package.
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// i.e., 'xproto' for the core X protocol, 'randr' for the RandR extension, etc.
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func (p *Protocol) PkgName() string {
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return strings.Replace(p.Name, "_", "", -1)
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}
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// ProtocolGet searches the current context for the protocol with the given
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// name. (i.e., the current protocol and its imports.)
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// It is an error if one is not found.
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func (p *Protocol) ProtocolFind(name string) *Protocol {
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if p.Name == name {
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return p // that was easy
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}
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for _, imp := range p.Imports {
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if imp.Name == name {
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return imp
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}
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}
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log.Panicf("Could not find protocol with name '%s'.", name)
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panic("unreachable")
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}
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// isExt returns true if this protocol is an extension.
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// i.e., it's name isn't "xproto".
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func (p *Protocol) isExt() bool {
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return strings.ToLower(p.Name) != "xproto"
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}
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