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bgfx/3rdparty/scintilla/lexers/LexFlagship.cxx
Branimir Karadžić a510b8f347 Added Scintilla imgui.
2015-06-08 17:07:35 -07:00

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// Scintilla source code edit control
/** @file LexFlagShip.cxx
** Lexer for Harbour and FlagShip.
** (Syntactically compatible to other xBase dialects, like Clipper, dBase, Clip, FoxPro etc.)
**/
// Copyright 2005 by Randy Butler
// Copyright 2010 by Xavi <jarabal/at/gmail.com> (Harbour)
// 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 "ILexer.h"
#include "Scintilla.h"
#include "SciLexer.h"
#include "WordList.h"
#include "LexAccessor.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "CharacterSet.h"
#include "LexerModule.h"
#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif
// Extended to accept accented characters
static inline bool IsAWordChar(int ch)
{
return ch >= 0x80 ||
(isalnum(ch) || ch == '_');
}
static void ColouriseFlagShipDoc(unsigned int startPos, int length, int initStyle,
WordList *keywordlists[], Accessor &styler)
{
WordList &keywords = *keywordlists[0];
WordList &keywords2 = *keywordlists[1];
WordList &keywords3 = *keywordlists[2];
WordList &keywords4 = *keywordlists[3];
WordList &keywords5 = *keywordlists[4];
// property lexer.flagship.styling.within.preprocessor
// For Harbour code, determines whether all preprocessor code is styled in the preprocessor style (0) or only from the
// initial # to the end of the command word(1, the default). It also determines how to present text, dump, and disabled code.
bool stylingWithinPreprocessor = styler.GetPropertyInt("lexer.flagship.styling.within.preprocessor", 1) != 0;
CharacterSet setDoxygen(CharacterSet::setAlpha, "$@\\&<>#{}[]");
int visibleChars = 0;
int closeStringChar = 0;
int styleBeforeDCKeyword = SCE_FS_DEFAULT;
bool bEnableCode = initStyle < SCE_FS_DISABLEDCODE;
StyleContext sc(startPos, length, initStyle, styler);
for (; sc.More(); sc.Forward()) {
// Determine if the current state should terminate.
switch (sc.state) {
case SCE_FS_OPERATOR:
case SCE_FS_OPERATOR_C:
case SCE_FS_WORDOPERATOR:
sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
break;
case SCE_FS_IDENTIFIER:
case SCE_FS_IDENTIFIER_C:
if (!IsAWordChar(sc.ch)) {
char s[64];
sc.GetCurrentLowered(s, sizeof(s));
if (keywords.InList(s)) {
sc.ChangeState(bEnableCode ? SCE_FS_KEYWORD : SCE_FS_KEYWORD_C);
} else if (keywords2.InList(s)) {
sc.ChangeState(bEnableCode ? SCE_FS_KEYWORD2 : SCE_FS_KEYWORD2_C);
} else if (bEnableCode && keywords3.InList(s)) {
sc.ChangeState(SCE_FS_KEYWORD3);
} else if (bEnableCode && keywords4.InList(s)) {
sc.ChangeState(SCE_FS_KEYWORD4);
}// Else, it is really an identifier...
sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
}
break;
case SCE_FS_NUMBER:
if (!IsAWordChar(sc.ch) && !(sc.ch == '.' && IsADigit(sc.chNext))) {
sc.SetState(SCE_FS_DEFAULT);
}
break;
case SCE_FS_NUMBER_C:
if (!IsAWordChar(sc.ch) && sc.ch != '.') {
sc.SetState(SCE_FS_DEFAULT_C);
}
break;
case SCE_FS_CONSTANT:
if (!IsAWordChar(sc.ch)) {
sc.SetState(SCE_FS_DEFAULT);
}
break;
case SCE_FS_STRING:
case SCE_FS_STRING_C:
if (sc.ch == closeStringChar) {
sc.ForwardSetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
} else if (sc.atLineEnd) {
sc.ChangeState(bEnableCode ? SCE_FS_STRINGEOL : SCE_FS_STRINGEOL_C);
}
break;
case SCE_FS_STRINGEOL:
case SCE_FS_STRINGEOL_C:
if (sc.atLineStart) {
sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
}
break;
case SCE_FS_COMMENTDOC:
case SCE_FS_COMMENTDOC_C:
if (sc.Match('*', '/')) {
sc.Forward();
sc.ForwardSetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
} else if (sc.ch == '@' || sc.ch == '\\') { // JavaDoc and Doxygen support
// Verify that we have the conditions to mark a comment-doc-keyword
if ((IsASpace(sc.chPrev) || sc.chPrev == '*') && (!IsASpace(sc.chNext))) {
styleBeforeDCKeyword = bEnableCode ? SCE_FS_COMMENTDOC : SCE_FS_COMMENTDOC_C;
sc.SetState(SCE_FS_COMMENTDOCKEYWORD);
}
}
break;
case SCE_FS_COMMENT:
case SCE_FS_COMMENTLINE:
if (sc.atLineStart) {
sc.SetState(SCE_FS_DEFAULT);
}
break;
case SCE_FS_COMMENTLINEDOC:
case SCE_FS_COMMENTLINEDOC_C:
if (sc.atLineStart) {
sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
} else if (sc.ch == '@' || sc.ch == '\\') { // JavaDoc and Doxygen support
// Verify that we have the conditions to mark a comment-doc-keyword
if ((IsASpace(sc.chPrev) || sc.chPrev == '/' || sc.chPrev == '!') && (!IsASpace(sc.chNext))) {
styleBeforeDCKeyword = bEnableCode ? SCE_FS_COMMENTLINEDOC : SCE_FS_COMMENTLINEDOC_C;
sc.SetState(SCE_FS_COMMENTDOCKEYWORD);
}
}
break;
case SCE_FS_COMMENTDOCKEYWORD:
if ((styleBeforeDCKeyword == SCE_FS_COMMENTDOC || styleBeforeDCKeyword == SCE_FS_COMMENTDOC_C) &&
sc.Match('*', '/')) {
sc.ChangeState(SCE_FS_COMMENTDOCKEYWORDERROR);
sc.Forward();
sc.ForwardSetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
} else if (!setDoxygen.Contains(sc.ch)) {
char s[64];
sc.GetCurrentLowered(s, sizeof(s));
if (!IsASpace(sc.ch) || !keywords5.InList(s + 1)) {
sc.ChangeState(SCE_FS_COMMENTDOCKEYWORDERROR);
}
sc.SetState(styleBeforeDCKeyword);
}
break;
case SCE_FS_PREPROCESSOR:
case SCE_FS_PREPROCESSOR_C:
if (sc.atLineEnd) {
if (!(sc.chPrev == ';' || sc.GetRelative(-2) == ';')) {
sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
}
} else if (stylingWithinPreprocessor) {
if (IsASpaceOrTab(sc.ch)) {
sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
}
} else if (sc.Match('/', '*') || sc.Match('/', '/') || sc.Match('&', '&')) {
sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
}
break;
case SCE_FS_DISABLEDCODE:
if (sc.ch == '#' && visibleChars == 0) {
sc.SetState(bEnableCode ? SCE_FS_PREPROCESSOR : SCE_FS_PREPROCESSOR_C);
do { // Skip whitespace between # and preprocessor word
sc.Forward();
} while (IsASpaceOrTab(sc.ch) && sc.More());
if (sc.MatchIgnoreCase("pragma")) {
sc.Forward(6);
do { // Skip more whitespace until keyword
sc.Forward();
} while (IsASpaceOrTab(sc.ch) && sc.More());
if (sc.MatchIgnoreCase("enddump") || sc.MatchIgnoreCase("__endtext")) {
bEnableCode = true;
sc.SetState(SCE_FS_DISABLEDCODE);
sc.Forward(sc.ch == '_' ? 8 : 6);
sc.ForwardSetState(SCE_FS_DEFAULT);
} else {
sc.ChangeState(SCE_FS_DISABLEDCODE);
}
} else {
sc.ChangeState(SCE_FS_DISABLEDCODE);
}
}
break;
case SCE_FS_DATE:
if (sc.ch == '}') {
sc.ForwardSetState(SCE_FS_DEFAULT);
} else if (sc.atLineEnd) {
sc.ChangeState(SCE_FS_STRINGEOL);
}
}
// Determine if a new state should be entered.
if (sc.state == SCE_FS_DEFAULT || sc.state == SCE_FS_DEFAULT_C) {
if (bEnableCode &&
(sc.MatchIgnoreCase(".and.") || sc.MatchIgnoreCase(".not."))) {
sc.SetState(SCE_FS_WORDOPERATOR);
sc.Forward(4);
} else if (bEnableCode && sc.MatchIgnoreCase(".or.")) {
sc.SetState(SCE_FS_WORDOPERATOR);
sc.Forward(3);
} else if (bEnableCode &&
(sc.MatchIgnoreCase(".t.") || sc.MatchIgnoreCase(".f.") ||
(!IsAWordChar(sc.GetRelative(3)) && sc.MatchIgnoreCase("nil")))) {
sc.SetState(SCE_FS_CONSTANT);
sc.Forward(2);
} else if (sc.Match('/', '*')) {
sc.SetState(bEnableCode ? SCE_FS_COMMENTDOC : SCE_FS_COMMENTDOC_C);
sc.Forward();
} else if (bEnableCode && sc.Match('&', '&')) {
sc.SetState(SCE_FS_COMMENTLINE);
sc.Forward();
} else if (sc.Match('/', '/')) {
sc.SetState(bEnableCode ? SCE_FS_COMMENTLINEDOC : SCE_FS_COMMENTLINEDOC_C);
sc.Forward();
} else if (bEnableCode && sc.ch == '*' && visibleChars == 0) {
sc.SetState(SCE_FS_COMMENT);
} else if (sc.ch == '\"' || sc.ch == '\'') {
sc.SetState(bEnableCode ? SCE_FS_STRING : SCE_FS_STRING_C);
closeStringChar = sc.ch;
} else if (closeStringChar == '>' && sc.ch == '<') {
sc.SetState(bEnableCode ? SCE_FS_STRING : SCE_FS_STRING_C);
} else if (sc.ch == '#' && visibleChars == 0) {
sc.SetState(bEnableCode ? SCE_FS_PREPROCESSOR : SCE_FS_PREPROCESSOR_C);
do { // Skip whitespace between # and preprocessor word
sc.Forward();
} while (IsASpaceOrTab(sc.ch) && sc.More());
if (sc.atLineEnd) {
sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
} else if (sc.MatchIgnoreCase("include")) {
if (stylingWithinPreprocessor) {
closeStringChar = '>';
}
} else if (sc.MatchIgnoreCase("pragma")) {
sc.Forward(6);
do { // Skip more whitespace until keyword
sc.Forward();
} while (IsASpaceOrTab(sc.ch) && sc.More());
if (sc.MatchIgnoreCase("begindump") || sc.MatchIgnoreCase("__cstream")) {
bEnableCode = false;
if (stylingWithinPreprocessor) {
sc.SetState(SCE_FS_DISABLEDCODE);
sc.Forward(8);
sc.ForwardSetState(SCE_FS_DEFAULT_C);
} else {
sc.SetState(SCE_FS_DISABLEDCODE);
}
} else if (sc.MatchIgnoreCase("enddump") || sc.MatchIgnoreCase("__endtext")) {
bEnableCode = true;
sc.SetState(SCE_FS_DISABLEDCODE);
sc.Forward(sc.ch == '_' ? 8 : 6);
sc.ForwardSetState(SCE_FS_DEFAULT);
}
}
} else if (bEnableCode && sc.ch == '{') {
int p = 0;
int chSeek;
unsigned int endPos(startPos + length);
do { // Skip whitespace
chSeek = sc.GetRelative(++p);
} while (IsASpaceOrTab(chSeek) && (sc.currentPos + p < endPos));
if (chSeek == '^') {
sc.SetState(SCE_FS_DATE);
} else {
sc.SetState(SCE_FS_OPERATOR);
}
} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
sc.SetState(bEnableCode ? SCE_FS_NUMBER : SCE_FS_NUMBER_C);
} else if (IsAWordChar(sc.ch)) {
sc.SetState(bEnableCode ? SCE_FS_IDENTIFIER : SCE_FS_IDENTIFIER_C);
} else if (isoperator(static_cast<char>(sc.ch)) || (bEnableCode && sc.ch == '@')) {
sc.SetState(bEnableCode ? SCE_FS_OPERATOR : SCE_FS_OPERATOR_C);
}
}
if (sc.atLineEnd) {
visibleChars = 0;
closeStringChar = 0;
}
if (!IsASpace(sc.ch)) {
visibleChars++;
}
}
sc.Complete();
}
static void FoldFlagShipDoc(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 && lineCurrent > 0) {
lineCurrent--;
startPos = styler.LineStart(lineCurrent);
}
int spaceFlags = 0;
int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags);
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-1)) {
int lev = indentCurrent;
int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags);
if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
lev |= SC_FOLDLEVELHEADERFLAG;
} else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
int spaceFlags2 = 0;
int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2);
if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
lev |= SC_FOLDLEVELHEADERFLAG;
}
}
}
indentCurrent = indentNext;
styler.SetLevel(lineCurrent, lev);
lineCurrent++;
}
}
}
static const char * const FSWordListDesc[] = {
"Keywords Commands",
"Std Library Functions",
"Procedure, return, exit",
"Class (oop)",
"Doxygen keywords",
0
};
LexerModule lmFlagShip(SCLEX_FLAGSHIP, ColouriseFlagShipDoc, "flagship", FoldFlagShipDoc, FSWordListDesc);
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