104 lines
3.8 KiB
Go
104 lines
3.8 KiB
Go
package s
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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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// Smalltalk lexer.
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var Smalltalk = internal.Register(MustNewLazyLexer(
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&Config{
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Name: "Smalltalk",
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Aliases: []string{"smalltalk", "squeak", "st"},
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Filenames: []string{"*.st"},
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MimeTypes: []string{"text/x-smalltalk"},
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},
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smalltalkRules,
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))
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func smalltalkRules() Rules {
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return Rules{
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"root": {
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{`(<)(\w+:)(.*?)(>)`, ByGroups(Text, Keyword, Text, Text), nil},
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Include("squeak fileout"),
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Include("whitespaces"),
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Include("method definition"),
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{`(\|)([\w\s]*)(\|)`, ByGroups(Operator, NameVariable, Operator), nil},
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Include("objects"),
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{`\^|:=|_`, Operator, nil},
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{`[\]({}.;!]`, Text, nil},
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},
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"method definition": {
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{`([a-zA-Z]+\w*:)(\s*)(\w+)`, ByGroups(NameFunction, Text, NameVariable), nil},
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{`^(\b[a-zA-Z]+\w*\b)(\s*)$`, ByGroups(NameFunction, Text), nil},
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{`^([-+*/\\~<>=|&!?,@%]+)(\s*)(\w+)(\s*)$`, ByGroups(NameFunction, Text, NameVariable, Text), nil},
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},
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"blockvariables": {
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Include("whitespaces"),
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{`(:)(\s*)(\w+)`, ByGroups(Operator, Text, NameVariable), nil},
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{`\|`, Operator, Pop(1)},
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Default(Pop(1)),
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},
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"literals": {
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{`'(''|[^'])*'`, LiteralString, Push("afterobject")},
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{`\$.`, LiteralStringChar, Push("afterobject")},
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{`#\(`, LiteralStringSymbol, Push("parenth")},
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{`\)`, Text, Push("afterobject")},
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{`(\d+r)?-?\d+(\.\d+)?(e-?\d+)?`, LiteralNumber, Push("afterobject")},
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},
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"_parenth_helper": {
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Include("whitespaces"),
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{`(\d+r)?-?\d+(\.\d+)?(e-?\d+)?`, LiteralNumber, nil},
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{`[-+*/\\~<>=|&#!?,@%\w:]+`, LiteralStringSymbol, nil},
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{`'(''|[^'])*'`, LiteralString, nil},
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{`\$.`, LiteralStringChar, nil},
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{`#*\(`, LiteralStringSymbol, Push("inner_parenth")},
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},
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"parenth": {
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{`\)`, LiteralStringSymbol, Push("root", "afterobject")},
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Include("_parenth_helper"),
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},
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"inner_parenth": {
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{`\)`, LiteralStringSymbol, Pop(1)},
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Include("_parenth_helper"),
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},
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"whitespaces": {
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{`\s+`, Text, nil},
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{`"(""|[^"])*"`, Comment, nil},
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},
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"objects": {
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{`\[`, Text, Push("blockvariables")},
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{`\]`, Text, Push("afterobject")},
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{`\b(self|super|true|false|nil|thisContext)\b`, NameBuiltinPseudo, Push("afterobject")},
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{`\b[A-Z]\w*(?!:)\b`, NameClass, Push("afterobject")},
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{`\b[a-z]\w*(?!:)\b`, NameVariable, Push("afterobject")},
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{`#("(""|[^"])*"|[-+*/\\~<>=|&!?,@%]+|[\w:]+)`, LiteralStringSymbol, Push("afterobject")},
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Include("literals"),
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},
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"afterobject": {
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{`! !$`, Keyword, Pop(1)},
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Include("whitespaces"),
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{`\b(ifTrue:|ifFalse:|whileTrue:|whileFalse:|timesRepeat:)`, NameBuiltin, Pop(1)},
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{`\b(new\b(?!:))`, NameBuiltin, nil},
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{`:=|_`, Operator, Pop(1)},
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{`\b[a-zA-Z]+\w*:`, NameFunction, Pop(1)},
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{`\b[a-zA-Z]+\w*`, NameFunction, nil},
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{`\w+:?|[-+*/\\~<>=|&!?,@%]+`, NameFunction, Pop(1)},
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{`\.`, Punctuation, Pop(1)},
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{`;`, Punctuation, nil},
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{`[\])}]`, Text, nil},
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{`[\[({]`, Text, Pop(1)},
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},
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"squeak fileout": {
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{`^"(""|[^"])*"!`, Keyword, nil},
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{`^'(''|[^'])*'!`, Keyword, nil},
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{`^(!)(\w+)( commentStamp: )(.*?)( prior: .*?!\n)(.*?)(!)`, ByGroups(Keyword, NameClass, Keyword, LiteralString, Keyword, Text, Keyword), nil},
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{`^(!)(\w+(?: class)?)( methodsFor: )('(?:''|[^'])*')(.*?!)`, ByGroups(Keyword, NameClass, Keyword, LiteralString, Keyword), nil},
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{`^(\w+)( subclass: )(#\w+)(\s+instanceVariableNames: )(.*?)(\s+classVariableNames: )(.*?)(\s+poolDictionaries: )(.*?)(\s+category: )(.*?)(!)`, ByGroups(NameClass, Keyword, LiteralStringSymbol, Keyword, LiteralString, Keyword, LiteralString, Keyword, LiteralString, Keyword, LiteralString, Keyword), nil},
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{`^(\w+(?: class)?)(\s+instanceVariableNames: )(.*?)(!)`, ByGroups(NameClass, Keyword, LiteralString, Keyword), nil},
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{`(!\n)(\].*)(! !)$`, ByGroups(Keyword, Text, Keyword), nil},
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{`! !$`, Keyword, nil},
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},
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}
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}
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