1package v
 2
 3import (
 4	. "github.com/alecthomas/chroma" // nolint
 5	"github.com/alecthomas/chroma/lexers/internal"
 6)
 7
 8const vbName = `[_\w][\w]*`
 9
10// VB.Net lexer.
11var VBNet = internal.Register(MustNewLexer(
12	&Config{
13		Name:            "VB.net",
14		Aliases:         []string{"vb.net", "vbnet"},
15		Filenames:       []string{"*.vb", "*.bas"},
16		MimeTypes:       []string{"text/x-vbnet", "text/x-vba"},
17		CaseInsensitive: true,
18	},
19	Rules{
20		"root": {
21			{`^\s*<.*?>`, NameAttribute, nil},
22			{`\s+`, Text, nil},
23			{`\n`, Text, nil},
24			{`rem\b.*?\n`, Comment, nil},
25			{`'.*?\n`, Comment, nil},
26			{`#If\s.*?\sThen|#ElseIf\s.*?\sThen|#Else|#End\s+If|#Const|#ExternalSource.*?\n|#End\s+ExternalSource|#Region.*?\n|#End\s+Region|#ExternalChecksum`, CommentPreproc, nil},
27			{`[(){}!#,.:]`, Punctuation, nil},
28			{`Option\s+(Strict|Explicit|Compare)\s+(On|Off|Binary|Text)`, KeywordDeclaration, nil},
29			{Words(`(?<!\.)`, `\b`, `AddHandler`, `Alias`, `ByRef`, `ByVal`, `Call`, `Case`, `Catch`, `CBool`, `CByte`, `CChar`, `CDate`, `CDec`, `CDbl`, `CInt`, `CLng`, `CObj`, `Continue`, `CSByte`, `CShort`, `CSng`, `CStr`, `CType`, `CUInt`, `CULng`, `CUShort`, `Declare`, `Default`, `Delegate`, `DirectCast`, `Do`, `Each`, `Else`, `ElseIf`, `EndIf`, `Erase`, `Error`, `Event`, `Exit`, `False`, `Finally`, `For`, `Friend`, `Get`, `Global`, `GoSub`, `GoTo`, `Handles`, `If`, `Implements`, `Inherits`, `Interface`, `Let`, `Lib`, `Loop`, `Me`, `MustInherit`, `MustOverride`, `MyBase`, `MyClass`, `Narrowing`, `New`, `Next`, `Not`, `Nothing`, `NotInheritable`, `NotOverridable`, `Of`, `On`, `Operator`, `Option`, `Optional`, `Overloads`, `Overridable`, `Overrides`, `ParamArray`, `Partial`, `Private`, `Protected`, `Public`, `RaiseEvent`, `ReadOnly`, `ReDim`, `RemoveHandler`, `Resume`, `Return`, `Select`, `Set`, `Shadows`, `Shared`, `Single`, `Static`, `Step`, `Stop`, `SyncLock`, `Then`, `Throw`, `To`, `True`, `Try`, `TryCast`, `Wend`, `Using`, `When`, `While`, `Widening`, `With`, `WithEvents`, `WriteOnly`), Keyword, nil},
30			{`(?<!\.)End\b`, Keyword, Push("end")},
31			{`(?<!\.)(Dim|Const)\b`, Keyword, Push("dim")},
32			{`(?<!\.)(Function|Sub|Property)(\s+)`, ByGroups(Keyword, Text), Push("funcname")},
33			{`(?<!\.)(Class|Structure|Enum)(\s+)`, ByGroups(Keyword, Text), Push("classname")},
34			{`(?<!\.)(Module|Namespace|Imports)(\s+)`, ByGroups(Keyword, Text), Push("namespace")},
35			{`(?<!\.)(Boolean|Byte|Char|Date|Decimal|Double|Integer|Long|Object|SByte|Short|Single|String|Variant|UInteger|ULong|UShort)\b`, KeywordType, nil},
36			{`(?<!\.)(AddressOf|And|AndAlso|As|GetType|In|Is|IsNot|Like|Mod|Or|OrElse|TypeOf|Xor)\b`, OperatorWord, nil},
37			{`&=|[*]=|/=|\\=|\^=|\+=|-=|<<=|>>=|<<|>>|:=|<=|>=|<>|[-&*/\\^+=<>\[\]]`, Operator, nil},
38			{`"`, LiteralString, Push("string")},
39			{`_\n`, Text, nil},
40			{vbName, Name, nil},
41			{`#.*?#`, LiteralDate, nil},
42			{`(\d+\.\d*|\d*\.\d+)(F[+-]?[0-9]+)?`, LiteralNumberFloat, nil},
43			{`\d+([SILDFR]|US|UI|UL)?`, LiteralNumberInteger, nil},
44			{`&H[0-9a-f]+([SILDFR]|US|UI|UL)?`, LiteralNumberInteger, nil},
45			{`&O[0-7]+([SILDFR]|US|UI|UL)?`, LiteralNumberInteger, nil},
46		},
47		"string": {
48			{`""`, LiteralString, nil},
49			{`"C?`, LiteralString, Pop(1)},
50			{`[^"]+`, LiteralString, nil},
51		},
52		"dim": {
53			{vbName, NameVariable, Pop(1)},
54			Default(Pop(1)),
55		},
56		"funcname": {
57			{vbName, NameFunction, Pop(1)},
58		},
59		"classname": {
60			{vbName, NameClass, Pop(1)},
61		},
62		"namespace": {
63			{vbName, NameNamespace, nil},
64			{`\.`, NameNamespace, nil},
65			Default(Pop(1)),
66		},
67		"end": {
68			{`\s+`, Text, nil},
69			{`(Function|Sub|Property|Class|Structure|Enum|Module|Namespace)\b`, Keyword, Pop(1)},
70			Default(Pop(1)),
71		},
72	},
73))