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-rwxr-xr-xsrc/LexVB.cpp278
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diff --git a/src/LexVB.cpp b/src/LexVB.cpp
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+++ b/src/LexVB.cpp
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+// Scintilla source code edit control
+/** @file LexVB.cxx
+ ** Lexer for Visual Basic and VBScript.
+ **/
+// Copyright 1998-2005 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 <ctype.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "Platform.h"
+
+#include "PropSet.h"
+#include "Accessor.h"
+#include "StyleContext.h"
+#include "KeyWords.h"
+#include "Scintilla.h"
+#include "SciLexer.h"
+
+// Internal state, highlighted as number
+#define SCE_B_FILENUMBER SCE_B_DEFAULT+100
+
+
+static bool IsVBComment(Accessor &styler, int pos, int len) {
+ return len > 0 && styler[pos] == '\'';
+}
+
+static inline bool IsTypeCharacter(int ch) {
+ return ch == '%' || ch == '&' || ch == '@' || ch == '!' || ch == '#' || ch == '$';
+}
+
+// Extended to accept accented characters
+static inline bool IsAWordChar(int ch) {
+ return ch >= 0x80 ||
+ (isalnum(ch) || ch == '.' || ch == '_');
+}
+
+static inline bool IsAWordStart(int ch) {
+ return ch >= 0x80 ||
+ (isalpha(ch) || ch == '_');
+}
+
+static inline bool IsANumberChar(int ch) {
+ // Not exactly following number definition (several dots are seen as OK, etc.)
+ // but probably enough in most cases.
+ return (ch < 0x80) &&
+ (isdigit(ch) || toupper(ch) == 'E' ||
+ ch == '.' || ch == '-' || ch == '+');
+}
+
+static void ColouriseVBDoc(unsigned int startPos, int length, int initStyle,
+ WordList *keywordlists[], Accessor &styler, bool vbScriptSyntax) {
+
+ WordList &keywords = *keywordlists[0];
+ WordList &keywords2 = *keywordlists[1];
+ WordList &keywords3 = *keywordlists[2];
+ WordList &keywords4 = *keywordlists[3];
+
+ styler.StartAt(startPos);
+
+ int visibleChars = 0;
+ int fileNbDigits = 0;
+
+ // Do not leak onto next line
+ if (initStyle == SCE_B_STRINGEOL || initStyle == SCE_B_COMMENT || initStyle == SCE_B_PREPROCESSOR) {
+ initStyle = SCE_B_DEFAULT;
+ }
+
+ StyleContext sc(startPos, length, initStyle, styler);
+
+ for (; sc.More(); sc.Forward()) {
+
+ if (sc.state == SCE_B_OPERATOR) {
+ sc.SetState(SCE_B_DEFAULT);
+ } else if (sc.state == SCE_B_IDENTIFIER) {
+ if (!IsAWordChar(sc.ch)) {
+ // In Basic (except VBScript), a variable name or a function name
+ // can end with a special character indicating the type of the value
+ // held or returned.
+ bool skipType = false;
+ if (!vbScriptSyntax && IsTypeCharacter(sc.ch)) {
+ sc.Forward(); // Skip it
+ skipType = true;
+ }
+ if (sc.ch == ']') {
+ sc.Forward();
+ }
+ char s[100];
+ sc.GetCurrentLowered(s, sizeof(s));
+ if (skipType) {
+ s[strlen(s) - 1] = '\0';
+ }
+ if (strcmp(s, "rem") == 0) {
+ sc.ChangeState(SCE_B_COMMENT);
+ } else {
+ if (keywords.InList(s)) {
+ sc.ChangeState(SCE_B_KEYWORD);
+ } else if (keywords2.InList(s)) {
+ sc.ChangeState(SCE_B_KEYWORD2);
+ } else if (keywords3.InList(s)) {
+ sc.ChangeState(SCE_B_KEYWORD3);
+ } else if (keywords4.InList(s)) {
+ sc.ChangeState(SCE_B_KEYWORD4);
+ } // Else, it is really an identifier...
+ sc.SetState(SCE_B_DEFAULT);
+ }
+ }
+ } else if (sc.state == SCE_B_NUMBER) {
+ // We stop the number definition on non-numerical non-dot non-eE non-sign char
+ // Also accepts A-F for hex. numbers
+ if (!IsANumberChar(sc.ch) && !(tolower(sc.ch) >= 'a' && tolower(sc.ch) <= 'f')) {
+ sc.SetState(SCE_B_DEFAULT);
+ }
+ } else if (sc.state == SCE_B_STRING) {
+ // VB doubles quotes to preserve them, so just end this string
+ // state now as a following quote will start again
+ if (sc.ch == '\"') {
+ if (sc.chNext == '\"') {
+ sc.Forward();
+ } else {
+ if (tolower(sc.chNext) == 'c') {
+ sc.Forward();
+ }
+ sc.ForwardSetState(SCE_B_DEFAULT);
+ }
+ } else if (sc.atLineEnd) {
+ visibleChars = 0;
+ sc.ChangeState(SCE_B_STRINGEOL);
+ sc.ForwardSetState(SCE_B_DEFAULT);
+ }
+ } else if (sc.state == SCE_B_COMMENT) {
+ if (sc.atLineEnd) {
+ visibleChars = 0;
+ sc.ForwardSetState(SCE_B_DEFAULT);
+ }
+ } else if (sc.state == SCE_B_PREPROCESSOR) {
+ if (sc.atLineEnd) {
+ visibleChars = 0;
+ sc.ForwardSetState(SCE_B_DEFAULT);
+ }
+ } else if (sc.state == SCE_B_FILENUMBER) {
+ if (IsADigit(sc.ch)) {
+ fileNbDigits++;
+ if (fileNbDigits > 3) {
+ sc.ChangeState(SCE_B_DATE);
+ }
+ } else if (sc.ch == '\r' || sc.ch == '\n' || sc.ch == ',') {
+ // Regular uses: Close #1; Put #1, ...; Get #1, ... etc.
+ // Too bad if date is format #27, Oct, 2003# or something like that...
+ // Use regular number state
+ sc.ChangeState(SCE_B_NUMBER);
+ sc.SetState(SCE_B_DEFAULT);
+ } else if (sc.ch == '#') {
+ sc.ChangeState(SCE_B_DATE);
+ sc.ForwardSetState(SCE_B_DEFAULT);
+ } else {
+ sc.ChangeState(SCE_B_DATE);
+ }
+ if (sc.state != SCE_B_FILENUMBER) {
+ fileNbDigits = 0;
+ }
+ } else if (sc.state == SCE_B_DATE) {
+ if (sc.atLineEnd) {
+ visibleChars = 0;
+ sc.ChangeState(SCE_B_STRINGEOL);
+ sc.ForwardSetState(SCE_B_DEFAULT);
+ } else if (sc.ch == '#') {
+ sc.ForwardSetState(SCE_B_DEFAULT);
+ }
+ }
+
+ if (sc.state == SCE_B_DEFAULT) {
+ if (sc.ch == '\'') {
+ sc.SetState(SCE_B_COMMENT);
+ } else if (sc.ch == '\"') {
+ sc.SetState(SCE_B_STRING);
+ } else if (sc.ch == '#' && visibleChars == 0) {
+ // Preprocessor commands are alone on their line
+ sc.SetState(SCE_B_PREPROCESSOR);
+ } else if (sc.ch == '#') {
+ // It can be a date literal, ending with #, or a file number, from 1 to 511
+ // The date literal depends on the locale, so anything can go between #'s.
+ // Can be #January 1, 1993# or #1 Jan 93# or #05/11/2003#, etc.
+ // So we set the FILENUMBER state, and switch to DATE if it isn't a file number
+ sc.SetState(SCE_B_FILENUMBER);
+ } else if (sc.ch == '&' && tolower(sc.chNext) == 'h') {
+ // Hexadecimal number
+ sc.SetState(SCE_B_NUMBER);
+ sc.Forward();
+ } else if (sc.ch == '&' && tolower(sc.chNext) == 'o') {
+ // Octal number
+ sc.SetState(SCE_B_NUMBER);
+ sc.Forward();
+ } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
+ sc.SetState(SCE_B_NUMBER);
+ } else if (IsAWordStart(sc.ch) || (sc.ch == '[')) {
+ sc.SetState(SCE_B_IDENTIFIER);
+ } else if (isoperator(static_cast<char>(sc.ch)) || (sc.ch == '\\')) { // Integer division
+ sc.SetState(SCE_B_OPERATOR);
+ }
+ }
+
+ if (sc.atLineEnd) {
+ visibleChars = 0;
+ }
+ if (!IsASpace(sc.ch)) {
+ visibleChars++;
+ }
+ }
+ sc.Complete();
+}
+
+static void FoldVBDoc(unsigned int startPos, int length, int,
+ WordList *[], Accessor &styler) {
+ int endPos = startPos + length;
+
+ // Backtrack to previous line in case need to fix its fold status
+ int lineCurrent = styler.GetLine(startPos);
+ if (startPos > 0) {
+ if (lineCurrent > 0) {
+ lineCurrent--;
+ startPos = styler.LineStart(lineCurrent);
+ }
+ }
+ int spaceFlags = 0;
+ int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsVBComment);
+ char chNext = styler[startPos];
+ for (int i = startPos; i < endPos; i++) {
+ char ch = chNext;
+ chNext = styler.SafeGetCharAt(i + 1);
+
+ if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos)) {
+ int lev = indentCurrent;
+ int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsVBComment);
+ if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
+ // Only non whitespace lines can be headers
+ if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
+ lev |= SC_FOLDLEVELHEADERFLAG;
+ } else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
+ // Line after is blank so check the next - maybe should continue further?
+ int spaceFlags2 = 0;
+ int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsVBComment);
+ if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
+ lev |= SC_FOLDLEVELHEADERFLAG;
+ }
+ }
+ }
+ indentCurrent = indentNext;
+ styler.SetLevel(lineCurrent, lev);
+ lineCurrent++;
+ }
+ }
+}
+
+static void ColouriseVBNetDoc(unsigned int startPos, int length, int initStyle,
+ WordList *keywordlists[], Accessor &styler) {
+ ColouriseVBDoc(startPos, length, initStyle, keywordlists, styler, false);
+}
+
+static void ColouriseVBScriptDoc(unsigned int startPos, int length, int initStyle,
+ WordList *keywordlists[], Accessor &styler) {
+ ColouriseVBDoc(startPos, length, initStyle, keywordlists, styler, true);
+}
+
+static const char * const vbWordListDesc[] = {
+ "Keywords",
+ "user1",
+ "user2",
+ "user3",
+ 0
+};
+
+LexerModule lmVB(SCLEX_VB, ColouriseVBNetDoc, "vb", FoldVBDoc, vbWordListDesc);
+LexerModule lmVBScript(SCLEX_VBSCRIPT, ColouriseVBScriptDoc, "vbscript", FoldVBDoc, vbWordListDesc);
+
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