chore: bump scintilla and lexilla version

2025-10-12 13:51:32 +08:00
parent 9fb3681e3a
commit db20417ce7
1093 changed files with 138943 additions and 128144 deletions
--- a/3rdparty/lexilla545/lexilla/lexers/LexNim.cxx
+++ b/3rdparty/lexilla545/lexilla/lexers/LexNim.cxx
@ -0,0 +1,814 @@
+// Scintilla source code edit control
+/** @file LexNim.cxx
+** Lexer for Nim
+** Written by Jad Altahan (github.com/xv)
+** Nim manual: https://nim-lang.org/docs/manual.html
+**/
+// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <ctype.h>
+
+#include <string>
+#include <string_view>
+#include <map>
+#include <algorithm>
+#include <functional>
+
+#include "ILexer.h"
+#include "Scintilla.h"
+#include "SciLexer.h"
+
+#include "StringCopy.h"
+#include "WordList.h"
+#include "LexAccessor.h"
+#include "Accessor.h"
+#include "StyleContext.h"
+#include "CharacterSet.h"
+#include "LexerModule.h"
+#include "OptionSet.h"
+#include "DefaultLexer.h"
+
+using namespace Scintilla;
+using namespace Lexilla;
+
+namespace {
+    // Use an unnamed namespace to protect the functions and classes from name conflicts
+
+enum NumType {
+    Binary,
+    Octal,
+    Exponent,
+    Hexadecimal,
+    Decimal,
+    FormatError
+};
+
+int GetNumStyle(const int numType) noexcept {
+    if (numType == NumType::FormatError) {
+        return SCE_NIM_NUMERROR;
+    }
+
+    return SCE_NIM_NUMBER;
+}
+
+constexpr bool IsLetter(const int ch) noexcept {
+    // 97 to 122 || 65 to 90
+    return (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z');
+}
+
+bool IsAWordChar(const int ch) noexcept {
+    return ch < 0x80 && (isalnum(ch) || ch == '_' || ch == '.');
+}
+
+int IsNumHex(const StyleContext &sc) noexcept {
+    return sc.chNext == 'x' || sc.chNext == 'X';
+}
+
+int IsNumBinary(const StyleContext &sc) noexcept {
+    return sc.chNext == 'b' || sc.chNext == 'B';
+}
+
+int IsNumOctal(const StyleContext &sc) {
+    return IsADigit(sc.chNext) || sc.chNext == 'o';
+}
+
+constexpr bool IsNewline(const int ch) noexcept {
+    return (ch == '\n' || ch == '\r');
+}
+
+bool IsFuncName(const char *str) noexcept {
+    const char *identifiers[] = {
+        "proc",
+        "func",
+        "macro",
+        "method",
+        "template",
+        "iterator",
+        "converter"
+    };
+
+    for (const char *id : identifiers) {
+        if (strcmp(str, id) == 0) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+constexpr bool IsTripleLiteral(const int style) noexcept {
+    return style == SCE_NIM_TRIPLE || style == SCE_NIM_TRIPLEDOUBLE;
+}
+
+constexpr bool IsLineComment(const int style) noexcept {
+    return style == SCE_NIM_COMMENTLINE || style == SCE_NIM_COMMENTLINEDOC;
+}
+
+constexpr bool IsStreamComment(const int style) noexcept {
+    return style == SCE_NIM_COMMENT || style == SCE_NIM_COMMENTDOC;
+}
+
+// Adopted from Accessor.cxx
+int GetIndent(const Sci_Position line, Accessor &styler) {
+    Sci_Position startPos = styler.LineStart(line);
+    const Sci_Position eolPos = styler.LineStart(line + 1) - 1;
+
+    char ch = styler[startPos];
+    int style = styler.StyleAt(startPos);
+
+    int indent = 0;
+    bool inPrevPrefix = line > 0;
+    Sci_Position posPrev = inPrevPrefix ? styler.LineStart(line - 1) : 0;
+
+    // No fold points inside triple literals
+    while ((IsASpaceOrTab(ch) || IsTripleLiteral(style)) && (startPos < eolPos)) {
+        if (inPrevPrefix) {
+            const char chPrev = styler[posPrev++];
+            if (chPrev != ' ' && chPrev != '\t') {
+                inPrevPrefix = false;
+            }
+        }
+
+        if (ch == '\t') {
+            indent = (indent / 8 + 1) * 8;
+        } else {
+            indent++;
+        }
+
+        startPos++;
+        ch = styler[startPos];
+        style = styler.StyleAt(startPos);
+    }
+
+    // Prevent creating fold lines for comments if indented
+    if (!(IsStreamComment(style) || IsLineComment(style)))
+        indent += SC_FOLDLEVELBASE;
+
+    if (styler.LineStart(line) == styler.Length() 
+        || IsASpaceOrTab(ch) 
+        || IsNewline(ch) 
+        || IsStreamComment(style)
+        || IsLineComment(style)) {
+        return indent | SC_FOLDLEVELWHITEFLAG;
+    } else {
+        return indent;
+    }
+}
+
+int IndentAmount(const Sci_Position line, Accessor &styler) {
+    const int indent = GetIndent(line, styler);
+    const int indentLevel = indent & SC_FOLDLEVELNUMBERMASK;
+    return indentLevel <= SC_FOLDLEVELBASE ? indent : indentLevel | (indent & ~SC_FOLDLEVELNUMBERMASK);
+}
+
+struct OptionsNim {
+    bool fold;
+    bool foldCompact;
+    bool highlightRawStrIdent;
+
+    OptionsNim() {
+        fold = true;
+        foldCompact = true;
+        highlightRawStrIdent = false;
+    }
+};
+
+static const char *const nimWordListDesc[] = {
+    "Keywords",
+    nullptr
+};
+
+struct OptionSetNim : public OptionSet<OptionsNim> {
+    OptionSetNim() {
+        DefineProperty("lexer.nim.raw.strings.highlight.ident", &OptionsNim::highlightRawStrIdent,
+            "Set to 1 to enable highlighting generalized raw string identifiers. "
+            "Generalized raw string identifiers are anything other than r (or R).");
+
+        DefineProperty("fold", &OptionsNim::fold);
+        DefineProperty("fold.compact", &OptionsNim::foldCompact);
+
+        DefineWordListSets(nimWordListDesc);
+    }
+};
+
+LexicalClass lexicalClasses[] = {
+    // Lexer Nim SCLEX_NIM SCE_NIM_:
+    0,  "SCE_NIM_DEFAULT",        "default",              "White space",
+    1,  "SCE_NIM_COMMENT",        "comment block",        "Block comment",
+    2,  "SCE_NIM_COMMENTDOC",     "comment block doc",    "Block doc comment",
+    3,  "SCE_NIM_COMMENTLINE",    "comment line",         "Line comment",
+    4,  "SCE_NIM_COMMENTLINEDOC", "comment doc",          "Line doc comment",
+    5,  "SCE_NIM_NUMBER",         "literal numeric",      "Number",
+    6,  "SCE_NIM_STRING",         "literal string",       "String",
+    7,  "SCE_NIM_CHARACTER",      "literal string",       "Single quoted string",
+    8,  "SCE_NIM_WORD",           "keyword",              "Keyword",
+    9,  "SCE_NIM_TRIPLE",         "literal string",       "Triple quotes",
+    10, "SCE_NIM_TRIPLEDOUBLE",   "literal string",       "Triple double quotes",
+    11, "SCE_NIM_BACKTICKS",      "operator definition",  "Identifiers",
+    12, "SCE_NIM_FUNCNAME",       "identifier",           "Function name definition",
+    13, "SCE_NIM_STRINGEOL",      "error literal string", "String is not closed",
+    14, "SCE_NIM_NUMERROR",       "numeric error",        "Numeric format error",
+    15, "SCE_NIM_OPERATOR",       "operator",             "Operators",
+    16, "SCE_NIM_IDENTIFIER",     "identifier",           "Identifiers",
+};
+
+}
+
+class LexerNim : public DefaultLexer {
+    CharacterSet setWord;
+    WordList keywords;
+    OptionsNim options;
+    OptionSetNim osNim;
+
+public:
+    LexerNim() :
+        DefaultLexer("nim", SCLEX_NIM, lexicalClasses, ELEMENTS(lexicalClasses)),
+        setWord(CharacterSet::setAlphaNum, "_", 0x80, true) { }
+
+    virtual ~LexerNim() { }
+
+    void SCI_METHOD Release() noexcept override {
+        delete this;
+    }
+
+    int SCI_METHOD Version() const noexcept override {
+        return lvRelease5;
+    }
+
+    const char * SCI_METHOD PropertyNames() override {
+        return osNim.PropertyNames();
+    }
+
+    int SCI_METHOD PropertyType(const char *name) override {
+        return osNim.PropertyType(name);
+    }
+
+    const char * SCI_METHOD DescribeProperty(const char *name) override {
+        return osNim.DescribeProperty(name);
+    }
+
+    Sci_Position SCI_METHOD PropertySet(const char *key, const char *val) override;
+
+	const char * SCI_METHOD PropertyGet(const char* key) override {
+		return osNim.PropertyGet(key);
+	}
+
+    const char * SCI_METHOD DescribeWordListSets() override {
+        return osNim.DescribeWordListSets();
+    }
+
+    Sci_Position SCI_METHOD WordListSet(int n, const char *wl) override;
+
+    void SCI_METHOD Lex(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess) override;
+    void SCI_METHOD Fold(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess) override;
+
+    void * SCI_METHOD PrivateCall(int, void *) noexcept override {
+        return nullptr;
+    }
+
+    int SCI_METHOD LineEndTypesSupported() noexcept override {
+        return SC_LINE_END_TYPE_UNICODE;
+    }
+
+    int SCI_METHOD PrimaryStyleFromStyle(int style) noexcept override {
+        return style;
+    }
+
+    static ILexer5 *LexerFactoryNim() {
+        return new LexerNim();
+    }
+};
+
+Sci_Position SCI_METHOD LexerNim::PropertySet(const char *key, const char *val) {
+    if (osNim.PropertySet(&options, key, val)) {
+        return 0;
+    }
+
+    return -1;
+}
+
+Sci_Position SCI_METHOD LexerNim::WordListSet(int n, const char *wl) {
+    WordList *wordListN = nullptr;
+
+    switch (n) {
+        case 0:
+            wordListN = &keywords;
+            break;
+    }
+
+    Sci_Position firstModification = -1;
+
+    if (wordListN) {
+        WordList wlNew;
+        wlNew.Set(wl);
+
+        if (*wordListN != wlNew) {
+            wordListN->Set(wl);
+            firstModification = 0;
+        }
+    }
+
+    return firstModification;
+}
+
+void SCI_METHOD LexerNim::Lex(Sci_PositionU startPos, Sci_Position length,
+                              int initStyle, IDocument *pAccess) {
+    // No one likes a leaky string
+    if (initStyle == SCE_NIM_STRINGEOL) {
+        initStyle = SCE_NIM_DEFAULT;
+    }
+
+    Accessor styler(pAccess, nullptr);
+    StyleContext sc(startPos, length, initStyle, styler);
+
+    // Nim supports nested block comments!
+    Sci_Position lineCurrent = styler.GetLine(startPos);
+    int commentNestLevel = lineCurrent > 0 ? styler.GetLineState(lineCurrent - 1) : 0;
+
+    int numType = NumType::Decimal;
+    int decimalCount = 0;
+
+    bool funcNameExists = false;
+    bool isStylingRawString = false;
+    bool isStylingRawStringIdent = false;
+
+    for (; sc.More(); sc.Forward()) {
+        if (sc.atLineStart) {
+            if (sc.state == SCE_NIM_STRING) {
+                sc.SetState(SCE_NIM_STRING);
+            }
+
+            lineCurrent = styler.GetLine(sc.currentPos);
+            styler.SetLineState(lineCurrent, commentNestLevel);
+        }
+
+        // Handle string line continuation
+        if (sc.ch == '\\' && (sc.chNext == '\n' || sc.chNext == '\r') &&
+           (sc.state == SCE_NIM_STRING || sc.state == SCE_NIM_CHARACTER) && !isStylingRawString) {
+            sc.Forward();
+
+            if (sc.ch == '\r' && sc.chNext == '\n') {
+                sc.Forward();
+            }
+
+            continue;
+        }
+
+        switch (sc.state) {
+            case SCE_NIM_OPERATOR:
+                funcNameExists = false;
+                sc.SetState(SCE_NIM_DEFAULT);
+                break;
+            case SCE_NIM_NUMBER:
+                // For a type suffix, such as 0x80'u8
+                if (sc.ch == '\'') {
+                    if (sc.chNext == 'i' || sc.chNext == 'I' || 
+                        sc.chNext == 'u' || sc.chNext == 'U' ||
+                        sc.chNext == 'f' || sc.chNext == 'F' || 
+                        sc.chNext == 'd' || sc.chNext == 'D') {
+                        sc.Forward(2);
+                    }
+                } else if (sc.ch == '.') {
+                    if (IsADigit(sc.chNext)) {
+                        sc.Forward();
+                    } else if (numType <= NumType::Exponent) {
+                        sc.SetState(SCE_NIM_OPERATOR);
+                        break;
+                    } else {
+                        decimalCount++;
+
+                        if (numType == NumType::Decimal) {
+                            if (decimalCount <= 1 && !IsAWordChar(sc.chNext)) {
+                                break;
+                            }
+                        } else if (numType == NumType::Hexadecimal) {
+                            if (decimalCount <= 1 && IsADigit(sc.chNext, 16)) {
+                                break;
+                            }
+
+                            sc.SetState(SCE_NIM_OPERATOR);
+                            break;
+                        }
+                    }
+                } else if (sc.ch == '_') {
+                    // Accept only one underscore between digits
+                    if (IsADigit(sc.chNext)) {
+                        sc.Forward();
+                    }
+                } else if (numType == NumType::Decimal) {
+                    if (sc.chPrev != '\'' && (sc.ch == 'e' || sc.ch == 'E')) {
+                        numType = NumType::Exponent;
+
+                        if (sc.chNext == '-' || sc.chNext == '+') {
+                            sc.Forward();
+                        }
+
+                        break;
+                    }
+
+                    if (IsADigit(sc.ch)) {
+                        break;
+                    }
+                } else if (numType == NumType::Hexadecimal) {
+                    if (IsADigit(sc.ch, 16)) {
+                        break;
+                    }
+                } else if (IsADigit(sc.ch)) {
+                    if (numType == NumType::Exponent) {
+                        break;
+                    }
+
+                    if (numType == NumType::Octal) {
+                        // Accept only 0-7
+                        if (sc.ch <= '7') {
+                            break;
+                        }
+                    } else if (numType == NumType::Binary) {
+                        // Accept only 0 and 1
+                        if (sc.ch <= '1') {
+                            break;
+                        }
+                    }
+
+                    numType = NumType::FormatError;
+                    break;
+                }
+
+                sc.ChangeState(GetNumStyle(numType));
+                sc.SetState(SCE_NIM_DEFAULT);
+                break;
+            case SCE_NIM_IDENTIFIER:
+                if (sc.ch == '.' || !IsAWordChar(sc.ch)) {
+                    char s[100];
+                    sc.GetCurrent(s, sizeof(s));
+                    int style = SCE_NIM_IDENTIFIER;
+
+                    if (keywords.InList(s) && !funcNameExists) {
+                        // Prevent styling keywords if they are sub-identifiers
+                        const Sci_Position segStart = styler.GetStartSegment() - 1;
+                        if (segStart < 0 || styler.SafeGetCharAt(segStart, '\0') != '.') {
+                            style = SCE_NIM_WORD;
+                        }
+                    } else if (funcNameExists) {
+                        style = SCE_NIM_FUNCNAME;
+                    }
+
+                    sc.ChangeState(style);
+                    sc.SetState(SCE_NIM_DEFAULT);
+
+                    if (style == SCE_NIM_WORD) {
+                        funcNameExists = IsFuncName(s);
+                    } else {
+                        funcNameExists = false;
+                    }
+                }
+
+                if (IsAlphaNumeric(sc.ch) && sc.chNext == '\"') {
+                    isStylingRawStringIdent = true;
+
+                    if (options.highlightRawStrIdent) {
+                        if (styler.SafeGetCharAt(sc.currentPos + 2) == '\"' &&
+                            styler.SafeGetCharAt(sc.currentPos + 3) == '\"') {
+                            sc.ChangeState(SCE_NIM_TRIPLEDOUBLE);
+                        } else {
+                            sc.ChangeState(SCE_NIM_STRING);
+                        }
+                    }
+
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                }
+                break;
+            case SCE_NIM_FUNCNAME:
+                if (sc.ch == '`') {
+                    funcNameExists = false;
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                } else if (sc.atLineEnd) {
+                    // Prevent leaking the style to the next line if not closed
+                    funcNameExists = false;
+
+                    sc.ChangeState(SCE_NIM_STRINGEOL);
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                }
+                break;
+            case SCE_NIM_COMMENT:
+                if (sc.Match(']', '#')) {
+                    if (commentNestLevel > 0) {
+                        commentNestLevel--;
+                    }
+
+                    lineCurrent = styler.GetLine(sc.currentPos);
+                    styler.SetLineState(lineCurrent, commentNestLevel);
+                    sc.Forward();
+
+                    if (commentNestLevel == 0) {
+                        sc.ForwardSetState(SCE_NIM_DEFAULT);
+                    }
+                } else if (sc.Match('#', '[')) {
+                    commentNestLevel++;
+                    lineCurrent = styler.GetLine(sc.currentPos);
+                    styler.SetLineState(lineCurrent, commentNestLevel);
+                }
+                break;
+            case SCE_NIM_COMMENTDOC:
+                if (sc.Match("]##")) {
+                    if (commentNestLevel > 0) {
+                        commentNestLevel--;
+                    }
+
+                    lineCurrent = styler.GetLine(sc.currentPos);
+                    styler.SetLineState(lineCurrent, commentNestLevel);
+                    sc.Forward(2);
+
+                    if (commentNestLevel == 0) {
+                        sc.ForwardSetState(SCE_NIM_DEFAULT);
+                    }
+                } else if (sc.Match("##[")) {
+                    commentNestLevel++;
+                    lineCurrent = styler.GetLine(sc.currentPos);
+                    styler.SetLineState(lineCurrent, commentNestLevel);
+                }
+                break;
+            case SCE_NIM_COMMENTLINE:
+            case SCE_NIM_COMMENTLINEDOC:
+                if (sc.atLineStart) {
+                    sc.SetState(SCE_NIM_DEFAULT);
+                }
+                break;
+            case SCE_NIM_STRING:
+                if (!isStylingRawStringIdent && !isStylingRawString && sc.ch == '\\') {
+                    if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+                        sc.Forward();
+                    }
+                } else if (isStylingRawString && sc.ch == '\"' && sc.chNext == '\"') {
+                    // Forward in situations such as r"a""bc\" so that "bc\" wouldn't be
+                    // considered a string of its own
+                    sc.Forward();
+                } else if (sc.ch == '\"') {
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                } else if (sc.atLineEnd) {
+                    sc.ChangeState(SCE_NIM_STRINGEOL);
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                }
+                break;
+            case SCE_NIM_CHARACTER:
+                if (sc.ch == '\\') {
+                    if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+                        sc.Forward();
+                    }
+                } else if (sc.ch == '\'') {
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                } else if (sc.atLineEnd) {
+                    sc.ChangeState(SCE_NIM_STRINGEOL);
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                }
+                break;
+            case SCE_NIM_BACKTICKS:
+                if (sc.ch == '`' ) {
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                } else if (sc.atLineEnd) {
+                    sc.ChangeState(SCE_NIM_STRINGEOL);
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                }
+                break;
+            case SCE_NIM_TRIPLEDOUBLE:
+                if (sc.Match(R"(""")")) {
+
+                    // Outright forward all " after the closing """ as a triple double
+                    //
+                    // A valid example where this is needed is: """8 double quotes->""""""""
+                    // You can have as many """ at the end as you wish, as long as the actual
+                    // closing literal is there
+                    while (sc.ch == '"') {
+                        sc.Forward();
+                    }
+
+                    sc.SetState(SCE_NIM_DEFAULT);
+                }
+                break;
+            case SCE_NIM_TRIPLE:
+                if (sc.Match("'''")) {
+                    sc.Forward(2);
+                    sc.ForwardSetState(SCE_NIM_DEFAULT);
+                }
+                break;
+        }
+
+        if (sc.state == SCE_NIM_DEFAULT) {
+            // Number
+            if (IsADigit(sc.ch)) {
+                sc.SetState(SCE_NIM_NUMBER);
+
+                numType = NumType::Decimal;
+                decimalCount = 0;
+
+                if (sc.ch == '0') {
+                    if (IsNumHex(sc)) {
+                        numType = NumType::Hexadecimal;
+                    } else if (IsNumBinary(sc)) {
+                        numType = NumType::Binary;
+                    } else if (IsNumOctal(sc)) {
+                        numType = NumType::Octal;
+                    }
+
+                    if (numType != NumType::Decimal) {
+                        sc.Forward();
+                    }
+                }
+            }
+            // Raw string
+            else if (IsAlphaNumeric(sc.ch) && sc.chNext == '\"') {
+                isStylingRawString = true;
+
+                // Triple doubles can be raw strings too. How sweet
+                if (styler.SafeGetCharAt(sc.currentPos + 2) == '\"' &&
+                    styler.SafeGetCharAt(sc.currentPos + 3) == '\"') {
+                    sc.SetState(SCE_NIM_TRIPLEDOUBLE);
+                } else {
+                    sc.SetState(SCE_NIM_STRING);
+                }
+
+                const int rawStrStyle = options.highlightRawStrIdent ? IsLetter(sc.ch) :
+                                        (sc.ch == 'r' || sc.ch == 'R');
+
+                if (rawStrStyle) {
+                    sc.Forward();
+
+                    if (sc.state == SCE_NIM_TRIPLEDOUBLE) {
+                        sc.Forward(2);
+                    }
+                } else {
+                    // Anything other than r/R is considered a general raw string identifier
+                    isStylingRawStringIdent = true;
+                    sc.SetState(SCE_NIM_IDENTIFIER);
+                }
+            }
+            // String and triple double literal
+            else if (sc.ch == '\"') {
+                isStylingRawString = false;
+
+                if (sc.Match(R"(""")")) {
+                    sc.SetState(SCE_NIM_TRIPLEDOUBLE);
+                    
+                    // Keep forwarding until the total opening literal count is 5
+                    // A valid example where this is needed is: """""<-5 double quotes"""
+                    while (sc.ch == '"') {
+                        sc.Forward();
+
+                        if (sc.Match(R"(""")")) {
+                            sc.Forward();
+                            break;
+                        }
+                    }
+                } else {
+                    sc.SetState(SCE_NIM_STRING);
+                }
+            }
+            // Charecter and triple literal
+            else if (sc.ch == '\'') {
+                if (sc.Match("'''")) {
+                    sc.SetState(SCE_NIM_TRIPLE);
+                } else {
+                    sc.SetState(SCE_NIM_CHARACTER);
+                }
+            }
+            // Operator definition
+            else if (sc.ch == '`') {
+                if (funcNameExists) {
+                    sc.SetState(SCE_NIM_FUNCNAME);
+                } else {
+                    sc.SetState(SCE_NIM_BACKTICKS);
+                }
+            }
+            // Keyword
+            else if (iswordstart(sc.ch)) {
+                sc.SetState(SCE_NIM_IDENTIFIER);
+            }
+            // Comments
+            else if (sc.ch == '#') {
+                if (sc.Match("##[") || sc.Match("#[")) {
+                    commentNestLevel++;
+                    lineCurrent = styler.GetLine(sc.currentPos);
+                    styler.SetLineState(lineCurrent, commentNestLevel);
+                }
+
+                if (sc.Match("##[")) {
+                    sc.SetState(SCE_NIM_COMMENTDOC);
+                    sc.Forward();
+                } else if (sc.Match("#[")) {
+                    sc.SetState(SCE_NIM_COMMENT);
+                    sc.Forward();
+                } else if (sc.Match("##")) {
+                    sc.SetState(SCE_NIM_COMMENTLINEDOC);
+                } else {
+                    sc.SetState(SCE_NIM_COMMENTLINE);
+                }
+            }
+            // Operators
+            else if (strchr("()[]{}:=;-\\/&%$!+<>|^?,.*~@", sc.ch)) {
+                sc.SetState(SCE_NIM_OPERATOR);
+            }
+        }
+
+        if (sc.atLineEnd) {
+            funcNameExists = false;
+            isStylingRawString = false;
+            isStylingRawStringIdent = false;
+        }
+    }
+
+    sc.Complete();
+}
+
+void SCI_METHOD LexerNim::Fold(Sci_PositionU startPos, Sci_Position length, int, IDocument *pAccess) {
+    if (!options.fold) {
+        return;
+    }
+
+    Accessor styler(pAccess, nullptr);
+
+    const Sci_Position docLines = styler.GetLine(styler.Length());
+    const Sci_Position maxPos = startPos + length;
+    const Sci_Position maxLines = styler.GetLine(maxPos == styler.Length() ? maxPos : maxPos - 1);
+
+    Sci_Position lineCurrent = styler.GetLine(startPos);
+    int indentCurrent = IndentAmount(lineCurrent, styler);
+
+    while (lineCurrent > 0) {
+        lineCurrent--;
+        indentCurrent = IndentAmount(lineCurrent, styler);
+
+        if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
+            break;
+        }
+    }
+
+    int indentCurrentLevel = indentCurrent & SC_FOLDLEVELNUMBERMASK;
+    indentCurrent = indentCurrentLevel | (indentCurrent & ~SC_FOLDLEVELNUMBERMASK);
+
+    while (lineCurrent <= docLines && lineCurrent <= maxLines) {
+        Sci_Position lineNext = lineCurrent + 1;
+        int indentNext = indentCurrent;
+        int lev = indentCurrent;
+
+        if (lineNext <= docLines) {
+            indentNext = IndentAmount(lineNext, styler);
+        }
+
+        if (indentNext & SC_FOLDLEVELWHITEFLAG) {
+            indentNext = SC_FOLDLEVELWHITEFLAG | indentCurrentLevel;
+        }
+
+        while (lineNext < docLines && (indentNext & SC_FOLDLEVELWHITEFLAG)) {
+            lineNext++;
+            indentNext = IndentAmount(lineNext, styler);
+        }
+
+        const int indentNextLevel = indentNext & SC_FOLDLEVELNUMBERMASK;
+        indentNext = indentNextLevel | (indentNext & ~SC_FOLDLEVELNUMBERMASK);
+
+        const int levelBeforeComments = std::max(indentCurrentLevel, indentNextLevel);
+
+        Sci_Position skipLine = lineNext;
+        int skipLevel = indentNextLevel;
+
+        while (--skipLine > lineCurrent) {
+            const int skipLineIndent = IndentAmount(skipLine, styler);
+
+            if (options.foldCompact) {
+                if ((skipLineIndent & SC_FOLDLEVELNUMBERMASK) > indentNextLevel) {
+                    skipLevel = levelBeforeComments;
+                }
+
+                const int whiteFlag = skipLineIndent & SC_FOLDLEVELWHITEFLAG;
+                styler.SetLevel(skipLine, skipLevel | whiteFlag);
+            } else {
+                if ((skipLineIndent & SC_FOLDLEVELNUMBERMASK) > indentNextLevel &&
+                   !(skipLineIndent & SC_FOLDLEVELWHITEFLAG)) {
+                    skipLevel = levelBeforeComments;
+                }
+
+                styler.SetLevel(skipLine, skipLevel);
+            }
+        }
+
+        if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
+            if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
+                lev |= SC_FOLDLEVELHEADERFLAG;
+            }
+        }
+
+        styler.SetLevel(lineCurrent, options.foldCompact ? lev : lev & ~SC_FOLDLEVELWHITEFLAG);
+
+        indentCurrent = indentNext;
+        indentCurrentLevel = indentNextLevel;
+        lineCurrent = lineNext;
+    }
+}
+
+extern const LexerModule lmNim(SCLEX_NIM, LexerNim::LexerFactoryNim, "nim", nimWordListDesc);