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-// Scintilla source code edit control
-/** @file LexAsm.cxx
- ** Lexer for Assembler, just for the MASM syntax
- ** Written by The Black Horus
- ** Enhancements and NASM stuff by Kein-Hong Man, 2003-10
- ** SCE_ASM_COMMENTBLOCK and SCE_ASM_CHARACTER are for future GNU as colouring
- ** Converted to lexer object and added further folding features/properties by "Udo Lechner" <dlchnr(at)gmx(dot)net>
- **/
-// Copyright 1998-2003 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 <map>
-#include <set>
-
-#include "ILexer.h"
-#include "Scintilla.h"
-#include "SciLexer.h"
-
-#include "WordList.h"
-#include "LexAccessor.h"
-#include "StyleContext.h"
-#include "CharacterSet.h"
-#include "LexerModule.h"
-#include "OptionSet.h"
-
-#ifdef SCI_NAMESPACE
-using namespace Scintilla;
-#endif
-
-static inline bool IsAWordChar(const int ch) {
- return (ch < 0x80) && (isalnum(ch) || ch == '.' ||
- ch == '_' || ch == '?');
-}
-
-static inline bool IsAWordStart(const int ch) {
- return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '.' ||
- ch == '%' || ch == '@' || ch == '$' || ch == '?');
-}
-
-static inline bool IsAsmOperator(const int ch) {
- if ((ch < 0x80) && (isalnum(ch)))
- return false;
- // '.' left out as it is used to make up numbers
- if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
- ch == '(' || ch == ')' || ch == '=' || ch == '^' ||
- ch == '[' || ch == ']' || ch == '<' || ch == '&' ||
- ch == '>' || ch == ',' || ch == '|' || ch == '~' ||
- ch == '%' || ch == ':')
- return true;
- return false;
-}
-
-static bool IsStreamCommentStyle(int style) {
- return style == SCE_ASM_COMMENTDIRECTIVE || style == SCE_ASM_COMMENTBLOCK;
-}
-
-static inline int LowerCase(int c) {
- if (c >= 'A' && c <= 'Z')
- return 'a' + c - 'A';
- return c;
-}
-
-// An individual named option for use in an OptionSet
-
-// Options used for LexerAsm
-struct OptionsAsm {
- std::string delimiter;
- bool fold;
- bool foldSyntaxBased;
- bool foldCommentMultiline;
- bool foldCommentExplicit;
- std::string foldExplicitStart;
- std::string foldExplicitEnd;
- bool foldExplicitAnywhere;
- bool foldCompact;
- OptionsAsm() {
- delimiter = "";
- fold = false;
- foldSyntaxBased = true;
- foldCommentMultiline = false;
- foldCommentExplicit = false;
- foldExplicitStart = "";
- foldExplicitEnd = "";
- foldExplicitAnywhere = false;
- foldCompact = true;
- }
-};
-
-static const char * const asmWordListDesc[] = {
- "CPU instructions",
- "FPU instructions",
- "Registers",
- "Directives",
- "Directive operands",
- "Extended instructions",
- "Directives4Foldstart",
- "Directives4Foldend",
- 0
-};
-
-struct OptionSetAsm : public OptionSet<OptionsAsm> {
- OptionSetAsm() {
- DefineProperty("lexer.asm.comment.delimiter", &OptionsAsm::delimiter,
- "Character used for COMMENT directive's delimiter, replacing the standard \"~\".");
-
- DefineProperty("fold", &OptionsAsm::fold);
-
- DefineProperty("fold.asm.syntax.based", &OptionsAsm::foldSyntaxBased,
- "Set this property to 0 to disable syntax based folding.");
-
- DefineProperty("fold.asm.comment.multiline", &OptionsAsm::foldCommentMultiline,
- "Set this property to 1 to enable folding multi-line comments.");
-
- DefineProperty("fold.asm.comment.explicit", &OptionsAsm::foldCommentExplicit,
- "This option enables folding explicit fold points when using the Asm lexer. "
- "Explicit fold points allows adding extra folding by placing a ;{ comment at the start and a ;} "
- "at the end of a section that should fold.");
-
- DefineProperty("fold.asm.explicit.start", &OptionsAsm::foldExplicitStart,
- "The string to use for explicit fold start points, replacing the standard ;{.");
-
- DefineProperty("fold.asm.explicit.end", &OptionsAsm::foldExplicitEnd,
- "The string to use for explicit fold end points, replacing the standard ;}.");
-
- DefineProperty("fold.asm.explicit.anywhere", &OptionsAsm::foldExplicitAnywhere,
- "Set this property to 1 to enable explicit fold points anywhere, not just in line comments.");
-
- DefineProperty("fold.compact", &OptionsAsm::foldCompact);
-
- DefineWordListSets(asmWordListDesc);
- }
-};
-
-class LexerAsm : public ILexer {
- WordList cpuInstruction;
- WordList mathInstruction;
- WordList registers;
- WordList directive;
- WordList directiveOperand;
- WordList extInstruction;
- WordList directives4foldstart;
- WordList directives4foldend;
- OptionsAsm options;
- OptionSetAsm osAsm;
- int commentChar;
-public:
- LexerAsm(int commentChar_) {
- commentChar = commentChar_;
- }
- virtual ~LexerAsm() {
- }
- void SCI_METHOD Release() {
- delete this;
- }
- int SCI_METHOD Version() const {
- return lvOriginal;
- }
- const char * SCI_METHOD PropertyNames() {
- return osAsm.PropertyNames();
- }
- int SCI_METHOD PropertyType(const char *name) {
- return osAsm.PropertyType(name);
- }
- const char * SCI_METHOD DescribeProperty(const char *name) {
- return osAsm.DescribeProperty(name);
- }
- int SCI_METHOD PropertySet(const char *key, const char *val);
- const char * SCI_METHOD DescribeWordListSets() {
- return osAsm.DescribeWordListSets();
- }
- int SCI_METHOD WordListSet(int n, const char *wl);
- void SCI_METHOD Lex(unsigned int startPos, int length, int initStyle, IDocument *pAccess);
- void SCI_METHOD Fold(unsigned int startPos, int length, int initStyle, IDocument *pAccess);
-
- void * SCI_METHOD PrivateCall(int, void *) {
- return 0;
- }
-
- static ILexer *LexerFactoryAsm() {
- return new LexerAsm(';');
- }
-
- static ILexer *LexerFactoryAs() {
- return new LexerAsm('#');
- }
-};
-
-int SCI_METHOD LexerAsm::PropertySet(const char *key, const char *val) {
- if (osAsm.PropertySet(&options, key, val)) {
- return 0;
- }
- return -1;
-}
-
-int SCI_METHOD LexerAsm::WordListSet(int n, const char *wl) {
- WordList *wordListN = 0;
- switch (n) {
- case 0:
- wordListN = &cpuInstruction;
- break;
- case 1:
- wordListN = &mathInstruction;
- break;
- case 2:
- wordListN = &registers;
- break;
- case 3:
- wordListN = &directive;
- break;
- case 4:
- wordListN = &directiveOperand;
- break;
- case 5:
- wordListN = &extInstruction;
- break;
- case 6:
- wordListN = &directives4foldstart;
- break;
- case 7:
- wordListN = &directives4foldend;
- break;
- }
- int firstModification = -1;
- if (wordListN) {
- WordList wlNew;
- wlNew.Set(wl);
- if (*wordListN != wlNew) {
- wordListN->Set(wl);
- firstModification = 0;
- }
- }
- return firstModification;
-}
-
-void SCI_METHOD LexerAsm::Lex(unsigned int startPos, int length, int initStyle, IDocument *pAccess) {
- LexAccessor styler(pAccess);
-
- // Do not leak onto next line
- if (initStyle == SCE_ASM_STRINGEOL)
- initStyle = SCE_ASM_DEFAULT;
-
- StyleContext sc(startPos, length, initStyle, styler);
-
- for (; sc.More(); sc.Forward())
- {
-
- // Prevent SCE_ASM_STRINGEOL from leaking back to previous line
- if (sc.atLineStart && (sc.state == SCE_ASM_STRING)) {
- sc.SetState(SCE_ASM_STRING);
- } else if (sc.atLineStart && (sc.state == SCE_ASM_CHARACTER)) {
- sc.SetState(SCE_ASM_CHARACTER);
- }
-
- // Handle line continuation generically.
- if (sc.ch == '\\') {
- if (sc.chNext == '\n' || sc.chNext == '\r') {
- sc.Forward();
- if (sc.ch == '\r' && sc.chNext == '\n') {
- sc.Forward();
- }
- continue;
- }
- }
-
- // Determine if the current state should terminate.
- if (sc.state == SCE_ASM_OPERATOR) {
- if (!IsAsmOperator(sc.ch)) {
- sc.SetState(SCE_ASM_DEFAULT);
- }
- } else if (sc.state == SCE_ASM_NUMBER) {
- if (!IsAWordChar(sc.ch)) {
- sc.SetState(SCE_ASM_DEFAULT);
- }
- } else if (sc.state == SCE_ASM_IDENTIFIER) {
- if (!IsAWordChar(sc.ch) ) {
- char s[100];
- sc.GetCurrentLowered(s, sizeof(s));
- bool IsDirective = false;
-
- if (cpuInstruction.InList(s)) {
- sc.ChangeState(SCE_ASM_CPUINSTRUCTION);
- } else if (mathInstruction.InList(s)) {
- sc.ChangeState(SCE_ASM_MATHINSTRUCTION);
- } else if (registers.InList(s)) {
- sc.ChangeState(SCE_ASM_REGISTER);
- } else if (directive.InList(s)) {
- sc.ChangeState(SCE_ASM_DIRECTIVE);
- IsDirective = true;
- } else if (directiveOperand.InList(s)) {
- sc.ChangeState(SCE_ASM_DIRECTIVEOPERAND);
- } else if (extInstruction.InList(s)) {
- sc.ChangeState(SCE_ASM_EXTINSTRUCTION);
- }
- sc.SetState(SCE_ASM_DEFAULT);
- if (IsDirective && !strcmp(s, "comment")) {
- char delimiter = options.delimiter.empty() ? '~' : options.delimiter.c_str()[0];
- while (IsASpaceOrTab(sc.ch) && !sc.atLineEnd) {
- sc.ForwardSetState(SCE_ASM_DEFAULT);
- }
- if (sc.ch == delimiter) {
- sc.SetState(SCE_ASM_COMMENTDIRECTIVE);
- }
- }
- }
- } else if (sc.state == SCE_ASM_COMMENTDIRECTIVE) {
- char delimiter = options.delimiter.empty() ? '~' : options.delimiter.c_str()[0];
- if (sc.ch == delimiter) {
- while (!sc.atLineEnd) {
- sc.Forward();
- }
- sc.SetState(SCE_ASM_DEFAULT);
- }
- } else if (sc.state == SCE_ASM_COMMENT ) {
- if (sc.atLineEnd) {
- sc.SetState(SCE_ASM_DEFAULT);
- }
- } else if (sc.state == SCE_ASM_STRING) {
- if (sc.ch == '\\') {
- if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
- sc.Forward();
- }
- } else if (sc.ch == '\"') {
- sc.ForwardSetState(SCE_ASM_DEFAULT);
- } else if (sc.atLineEnd) {
- sc.ChangeState(SCE_ASM_STRINGEOL);
- sc.ForwardSetState(SCE_ASM_DEFAULT);
- }
- } else if (sc.state == SCE_ASM_CHARACTER) {
- if (sc.ch == '\\') {
- if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
- sc.Forward();
- }
- } else if (sc.ch == '\'') {
- sc.ForwardSetState(SCE_ASM_DEFAULT);
- } else if (sc.atLineEnd) {
- sc.ChangeState(SCE_ASM_STRINGEOL);
- sc.ForwardSetState(SCE_ASM_DEFAULT);
- }
- }
-
- // Determine if a new state should be entered.
- if (sc.state == SCE_ASM_DEFAULT) {
- if (sc.ch == commentChar){
- sc.SetState(SCE_ASM_COMMENT);
- } else if (IsASCII(sc.ch) && (isdigit(sc.ch) || (sc.ch == '.' && IsASCII(sc.chNext) && isdigit(sc.chNext)))) {
- sc.SetState(SCE_ASM_NUMBER);
- } else if (IsAWordStart(sc.ch)) {
- sc.SetState(SCE_ASM_IDENTIFIER);
- } else if (sc.ch == '\"') {
- sc.SetState(SCE_ASM_STRING);
- } else if (sc.ch == '\'') {
- sc.SetState(SCE_ASM_CHARACTER);
- } else if (IsAsmOperator(sc.ch)) {
- sc.SetState(SCE_ASM_OPERATOR);
- }
- }
-
- }
- sc.Complete();
-}
-
-// Store both the current line's fold level and the next lines in the
-// level store to make it easy to pick up with each increment
-// and to make it possible to fiddle the current level for "else".
-
-void SCI_METHOD LexerAsm::Fold(unsigned int startPos, int length, int initStyle, IDocument *pAccess) {
-
- if (!options.fold)
- return;
-
- LexAccessor styler(pAccess);
-
- unsigned int endPos = startPos + length;
- int visibleChars = 0;
- int lineCurrent = styler.GetLine(startPos);
- int levelCurrent = SC_FOLDLEVELBASE;
- if (lineCurrent > 0)
- levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
- int levelNext = levelCurrent;
- char chNext = styler[startPos];
- int styleNext = styler.StyleAt(startPos);
- int style = initStyle;
- char word[100];
- int wordlen = 0;
- const bool userDefinedFoldMarkers = !options.foldExplicitStart.empty() && !options.foldExplicitEnd.empty();
- for (unsigned int i = startPos; i < endPos; i++) {
- char ch = chNext;
- chNext = styler.SafeGetCharAt(i + 1);
- int stylePrev = style;
- style = styleNext;
- styleNext = styler.StyleAt(i + 1);
- bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
- if (options.foldCommentMultiline && IsStreamCommentStyle(style)) {
- if (!IsStreamCommentStyle(stylePrev)) {
- levelNext++;
- } else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
- // Comments don't end at end of line and the next character may be unstyled.
- levelNext--;
- }
- }
- if (options.foldCommentExplicit && ((style == SCE_ASM_COMMENT) || options.foldExplicitAnywhere)) {
- if (userDefinedFoldMarkers) {
- if (styler.Match(i, options.foldExplicitStart.c_str())) {
- levelNext++;
- } else if (styler.Match(i, options.foldExplicitEnd.c_str())) {
- levelNext--;
- }
- } else {
- if (ch == ';') {
- if (chNext == '{') {
- levelNext++;
- } else if (chNext == '}') {
- levelNext--;
- }
- }
- }
- }
- if (options.foldSyntaxBased && (style == SCE_ASM_DIRECTIVE)) {
- word[wordlen++] = static_cast<char>(LowerCase(ch));
- if (wordlen == 100) { // prevent overflow
- word[0] = '\0';
- wordlen = 1;
- }
- if (styleNext != SCE_ASM_DIRECTIVE) { // reading directive ready
- word[wordlen] = '\0';
- wordlen = 0;
- if (directives4foldstart.InList(word)) {
- levelNext++;
- } else if (directives4foldend.InList(word)){
- levelNext--;
- }
- }
- }
- if (!IsASpace(ch))
- visibleChars++;
- if (atEOL || (i == endPos-1)) {
- int levelUse = levelCurrent;
- int lev = levelUse | levelNext << 16;
- if (visibleChars == 0 && options.foldCompact)
- lev |= SC_FOLDLEVELWHITEFLAG;
- if (levelUse < levelNext)
- lev |= SC_FOLDLEVELHEADERFLAG;
- if (lev != styler.LevelAt(lineCurrent)) {
- styler.SetLevel(lineCurrent, lev);
- }
- lineCurrent++;
- levelCurrent = levelNext;
- if (atEOL && (i == static_cast<unsigned int>(styler.Length()-1))) {
- // There is an empty line at end of file so give it same level and empty
- styler.SetLevel(lineCurrent, (levelCurrent | levelCurrent << 16) | SC_FOLDLEVELWHITEFLAG);
- }
- visibleChars = 0;
- }
- }
-}
-
-LexerModule lmAsm(SCLEX_ASM, LexerAsm::LexerFactoryAsm, "asm", asmWordListDesc);
-LexerModule lmAs(SCLEX_AS, LexerAsm::LexerFactoryAs, "as", asmWordListDesc);
-