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59126c5b32
Add NewLazyLexer and MustNewLazyLexer which accept a function that returns the rules for the lexer. This allows us to defer the rules definitions until they're needed. Lexers in a, g, s, and x packages have been updated to use the new lazy lexer.
66 lines
1.5 KiB
Go
66 lines
1.5 KiB
Go
package c
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import (
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. "github.com/alecthomas/chroma" // nolint
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"github.com/alecthomas/chroma/lexers/internal"
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)
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// Cap'N'Proto Proto lexer.
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var CapNProto = internal.Register(MustNewLazyLexer(
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&Config{
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Name: "Cap'n Proto",
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Aliases: []string{"capnp"},
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Filenames: []string{"*.capnp"},
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MimeTypes: []string{},
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},
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capNProtoRules,
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))
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func capNProtoRules() Rules {
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return Rules{
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"root": {
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{`#.*?$`, CommentSingle, nil},
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{`@[0-9a-zA-Z]*`, NameDecorator, nil},
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{`=`, Literal, Push("expression")},
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{`:`, NameClass, Push("type")},
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{`\$`, NameAttribute, Push("annotation")},
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{`(struct|enum|interface|union|import|using|const|annotation|extends|in|of|on|as|with|from|fixed)\b`, Keyword, nil},
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{`[\w.]+`, Name, nil},
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{`[^#@=:$\w]+`, Text, nil},
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},
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"type": {
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{`[^][=;,(){}$]+`, NameClass, nil},
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{`[[(]`, NameClass, Push("parentype")},
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Default(Pop(1)),
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},
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"parentype": {
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{`[^][;()]+`, NameClass, nil},
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{`[[(]`, NameClass, Push()},
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{`[])]`, NameClass, Pop(1)},
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Default(Pop(1)),
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},
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"expression": {
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{`[^][;,(){}$]+`, Literal, nil},
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{`[[(]`, Literal, Push("parenexp")},
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Default(Pop(1)),
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},
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"parenexp": {
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{`[^][;()]+`, Literal, nil},
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{`[[(]`, Literal, Push()},
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{`[])]`, Literal, Pop(1)},
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Default(Pop(1)),
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},
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"annotation": {
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{`[^][;,(){}=:]+`, NameAttribute, nil},
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{`[[(]`, NameAttribute, Push("annexp")},
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Default(Pop(1)),
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},
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"annexp": {
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{`[^][;()]+`, NameAttribute, nil},
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{`[[(]`, NameAttribute, Push()},
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{`[])]`, NameAttribute, Pop(1)},
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Default(Pop(1)),
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},
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}
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}
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