java.go

Documentation: github.com/alecthomas/chroma/lexers/j

     1  package j
     2  
     3  import (
     4  	. "github.com/alecthomas/chroma" // nolint
     5  	"github.com/alecthomas/chroma/lexers/internal"
     6  )
     7  
     8  // Java lexer.
     9  var Java = internal.Register(MustNewLazyLexer(
    10  	&Config{
    11  		Name:      "Java",
    12  		Aliases:   []string{"java"},
    13  		Filenames: []string{"*.java"},
    14  		MimeTypes: []string{"text/x-java"},
    15  		DotAll:    true,
    16  		EnsureNL:  true,
    17  	},
    18  	javaRules,
    19  ))
    20  
    21  func javaRules() Rules {
    22  	return Rules{
    23  		"root": {
    24  			{`[^\S\n]+`, Text, nil},
    25  			{`//.*?\n`, CommentSingle, nil},
    26  			{`/\*.*?\*/`, CommentMultiline, nil},
    27  			{`(assert|break|case|catch|continue|default|do|else|finally|for|if|goto|instanceof|new|return|switch|this|throw|try|while)\b`, Keyword, nil},
    28  			{`((?:(?:[^\W\d]|\$)[\w.\[\]$<>]*\s+)+?)((?:[^\W\d]|\$)[\w$]*)(\s*)(\()`, ByGroups(UsingSelf("root"), NameFunction, Text, Operator), nil},
    29  			{`@[^\W\d][\w.]*`, NameDecorator, nil},
    30  			{`(abstract|const|enum|extends|final|implements|native|private|protected|public|static|strictfp|super|synchronized|throws|transient|volatile)\b`, KeywordDeclaration, nil},
    31  			{`(boolean|byte|char|double|float|int|long|short|void)\b`, KeywordType, nil},
    32  			{`(package)(\s+)`, ByGroups(KeywordNamespace, Text), Push("import")},
    33  			{`(true|false|null)\b`, KeywordConstant, nil},
    34  			{`(class|interface)(\s+)`, ByGroups(KeywordDeclaration, Text), Push("class")},
    35  			{`(import(?:\s+static)?)(\s+)`, ByGroups(KeywordNamespace, Text), Push("import")},
    36  			{`"(\\\\|\\"|[^"])*"`, LiteralString, nil},
    37  			{`'\\.'|'[^\\]'|'\\u[0-9a-fA-F]{4}'`, LiteralStringChar, nil},
    38  			{`(\.)((?:[^\W\d]|\$)[\w$]*)`, ByGroups(Operator, NameAttribute), nil},
    39  			{`^\s*([^\W\d]|\$)[\w$]*:`, NameLabel, nil},
    40  			{`([^\W\d]|\$)[\w$]*`, Name, nil},
    41  			{`([0-9][0-9_]*\.([0-9][0-9_]*)?|\.[0-9][0-9_]*)([eE][+\-]?[0-9][0-9_]*)?[fFdD]?|[0-9][eE][+\-]?[0-9][0-9_]*[fFdD]?|[0-9]([eE][+\-]?[0-9][0-9_]*)?[fFdD]|0[xX]([0-9a-fA-F][0-9a-fA-F_]*\.?|([0-9a-fA-F][0-9a-fA-F_]*)?\.[0-9a-fA-F][0-9a-fA-F_]*)[pP][+\-]?[0-9][0-9_]*[fFdD]?`, LiteralNumberFloat, nil},
    42  			{`0[xX][0-9a-fA-F][0-9a-fA-F_]*[lL]?`, LiteralNumberHex, nil},
    43  			{`0[bB][01][01_]*[lL]?`, LiteralNumberBin, nil},
    44  			{`0[0-7_]+[lL]?`, LiteralNumberOct, nil},
    45  			{`0|[1-9][0-9_]*[lL]?`, LiteralNumberInteger, nil},
    46  			{`[~^*!%&\[\](){}<>|+=:;,./?-]`, Operator, nil},
    47  			{`\n`, Text, nil},
    48  		},
    49  		"class": {
    50  			{`([^\W\d]|\$)[\w$]*`, NameClass, Pop(1)},
    51  		},
    52  		"import": {
    53  			{`[\w.]+\*?`, NameNamespace, Pop(1)},
    54  		},
    55  	}
    56  }
    57
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