355 lines
12 KiB
C++
355 lines
12 KiB
C++
// Scintilla source code edit control
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/** @file LexFlagShip.cxx
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** Lexer for Harbour and FlagShip.
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** (Syntactically compatible to other xBase dialects, like Clipper, dBase, Clip, FoxPro etc.)
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**/
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// Copyright 2005 by Randy Butler
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// Copyright 2010 by Xavi <jarabal/at/gmail.com> (Harbour)
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// Copyright 1998-2003 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "CharacterSet.h"
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#include "LexerModule.h"
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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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// Extended to accept accented characters
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static inline bool IsAWordChar(int ch)
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{
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return ch >= 0x80 ||
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(isalnum(ch) || ch == '_');
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}
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static void ColouriseFlagShipDoc(unsigned int startPos, int length, int initStyle,
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WordList *keywordlists[], Accessor &styler)
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{
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WordList &keywords = *keywordlists[0];
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WordList &keywords2 = *keywordlists[1];
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WordList &keywords3 = *keywordlists[2];
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WordList &keywords4 = *keywordlists[3];
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WordList &keywords5 = *keywordlists[4];
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// property lexer.flagship.styling.within.preprocessor
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// For Harbour code, determines whether all preprocessor code is styled in the preprocessor style (0) or only from the
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// initial # to the end of the command word(1, the default). It also determines how to present text, dump, and disabled code.
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bool stylingWithinPreprocessor = styler.GetPropertyInt("lexer.flagship.styling.within.preprocessor", 1) != 0;
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CharacterSet setDoxygen(CharacterSet::setAlpha, "$@\\&<>#{}[]");
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int visibleChars = 0;
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int closeStringChar = 0;
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int styleBeforeDCKeyword = SCE_FS_DEFAULT;
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bool bEnableCode = initStyle < SCE_FS_DISABLEDCODE;
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StyleContext sc(startPos, length, initStyle, styler);
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for (; sc.More(); sc.Forward()) {
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// Determine if the current state should terminate.
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switch (sc.state) {
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case SCE_FS_OPERATOR:
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case SCE_FS_OPERATOR_C:
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case SCE_FS_WORDOPERATOR:
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sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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break;
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case SCE_FS_IDENTIFIER:
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case SCE_FS_IDENTIFIER_C:
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if (!IsAWordChar(sc.ch)) {
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char s[64];
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sc.GetCurrentLowered(s, sizeof(s));
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if (keywords.InList(s)) {
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sc.ChangeState(bEnableCode ? SCE_FS_KEYWORD : SCE_FS_KEYWORD_C);
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} else if (keywords2.InList(s)) {
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sc.ChangeState(bEnableCode ? SCE_FS_KEYWORD2 : SCE_FS_KEYWORD2_C);
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} else if (bEnableCode && keywords3.InList(s)) {
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sc.ChangeState(SCE_FS_KEYWORD3);
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} else if (bEnableCode && keywords4.InList(s)) {
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sc.ChangeState(SCE_FS_KEYWORD4);
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}// Else, it is really an identifier...
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sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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}
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break;
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case SCE_FS_NUMBER:
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if (!IsAWordChar(sc.ch) && !(sc.ch == '.' && IsADigit(sc.chNext))) {
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sc.SetState(SCE_FS_DEFAULT);
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}
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break;
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case SCE_FS_NUMBER_C:
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if (!IsAWordChar(sc.ch) && sc.ch != '.') {
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sc.SetState(SCE_FS_DEFAULT_C);
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}
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break;
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case SCE_FS_CONSTANT:
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if (!IsAWordChar(sc.ch)) {
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sc.SetState(SCE_FS_DEFAULT);
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}
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break;
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case SCE_FS_STRING:
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case SCE_FS_STRING_C:
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if (sc.ch == closeStringChar) {
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sc.ForwardSetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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} else if (sc.atLineEnd) {
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sc.ChangeState(bEnableCode ? SCE_FS_STRINGEOL : SCE_FS_STRINGEOL_C);
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}
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break;
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case SCE_FS_STRINGEOL:
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case SCE_FS_STRINGEOL_C:
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if (sc.atLineStart) {
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sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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}
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break;
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case SCE_FS_COMMENTDOC:
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case SCE_FS_COMMENTDOC_C:
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if (sc.Match('*', '/')) {
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sc.Forward();
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sc.ForwardSetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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} else if (sc.ch == '@' || sc.ch == '\\') { // JavaDoc and Doxygen support
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// Verify that we have the conditions to mark a comment-doc-keyword
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if ((IsASpace(sc.chPrev) || sc.chPrev == '*') && (!IsASpace(sc.chNext))) {
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styleBeforeDCKeyword = bEnableCode ? SCE_FS_COMMENTDOC : SCE_FS_COMMENTDOC_C;
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sc.SetState(SCE_FS_COMMENTDOCKEYWORD);
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}
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}
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break;
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case SCE_FS_COMMENT:
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case SCE_FS_COMMENTLINE:
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if (sc.atLineStart) {
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sc.SetState(SCE_FS_DEFAULT);
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}
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break;
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case SCE_FS_COMMENTLINEDOC:
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case SCE_FS_COMMENTLINEDOC_C:
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if (sc.atLineStart) {
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sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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} else if (sc.ch == '@' || sc.ch == '\\') { // JavaDoc and Doxygen support
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// Verify that we have the conditions to mark a comment-doc-keyword
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if ((IsASpace(sc.chPrev) || sc.chPrev == '/' || sc.chPrev == '!') && (!IsASpace(sc.chNext))) {
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styleBeforeDCKeyword = bEnableCode ? SCE_FS_COMMENTLINEDOC : SCE_FS_COMMENTLINEDOC_C;
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sc.SetState(SCE_FS_COMMENTDOCKEYWORD);
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}
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}
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break;
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case SCE_FS_COMMENTDOCKEYWORD:
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if ((styleBeforeDCKeyword == SCE_FS_COMMENTDOC || styleBeforeDCKeyword == SCE_FS_COMMENTDOC_C) &&
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sc.Match('*', '/')) {
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sc.ChangeState(SCE_FS_COMMENTDOCKEYWORDERROR);
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sc.Forward();
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sc.ForwardSetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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} else if (!setDoxygen.Contains(sc.ch)) {
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char s[64];
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sc.GetCurrentLowered(s, sizeof(s));
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if (!IsASpace(sc.ch) || !keywords5.InList(s + 1)) {
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sc.ChangeState(SCE_FS_COMMENTDOCKEYWORDERROR);
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}
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sc.SetState(styleBeforeDCKeyword);
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}
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break;
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case SCE_FS_PREPROCESSOR:
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case SCE_FS_PREPROCESSOR_C:
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if (sc.atLineEnd) {
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if (!(sc.chPrev == ';' || sc.GetRelative(-2) == ';')) {
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sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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}
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} else if (stylingWithinPreprocessor) {
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if (IsASpaceOrTab(sc.ch)) {
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sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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}
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} else if (sc.Match('/', '*') || sc.Match('/', '/') || sc.Match('&', '&')) {
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sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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}
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break;
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case SCE_FS_DISABLEDCODE:
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if (sc.ch == '#' && visibleChars == 0) {
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sc.SetState(bEnableCode ? SCE_FS_PREPROCESSOR : SCE_FS_PREPROCESSOR_C);
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do { // Skip whitespace between # and preprocessor word
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sc.Forward();
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} while (IsASpaceOrTab(sc.ch) && sc.More());
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if (sc.MatchIgnoreCase("pragma")) {
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sc.Forward(6);
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do { // Skip more whitespace until keyword
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sc.Forward();
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} while (IsASpaceOrTab(sc.ch) && sc.More());
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if (sc.MatchIgnoreCase("enddump") || sc.MatchIgnoreCase("__endtext")) {
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bEnableCode = true;
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sc.SetState(SCE_FS_DISABLEDCODE);
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sc.Forward(sc.ch == '_' ? 8 : 6);
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sc.ForwardSetState(SCE_FS_DEFAULT);
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} else {
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sc.ChangeState(SCE_FS_DISABLEDCODE);
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}
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} else {
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sc.ChangeState(SCE_FS_DISABLEDCODE);
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}
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}
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break;
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case SCE_FS_DATE:
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if (sc.ch == '}') {
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sc.ForwardSetState(SCE_FS_DEFAULT);
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} else if (sc.atLineEnd) {
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sc.ChangeState(SCE_FS_STRINGEOL);
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}
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}
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// Determine if a new state should be entered.
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if (sc.state == SCE_FS_DEFAULT || sc.state == SCE_FS_DEFAULT_C) {
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if (bEnableCode &&
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(sc.MatchIgnoreCase(".and.") || sc.MatchIgnoreCase(".not."))) {
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sc.SetState(SCE_FS_WORDOPERATOR);
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sc.Forward(4);
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} else if (bEnableCode && sc.MatchIgnoreCase(".or.")) {
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sc.SetState(SCE_FS_WORDOPERATOR);
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sc.Forward(3);
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} else if (bEnableCode &&
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(sc.MatchIgnoreCase(".t.") || sc.MatchIgnoreCase(".f.") ||
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(!IsAWordChar(sc.GetRelative(3)) && sc.MatchIgnoreCase("nil")))) {
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sc.SetState(SCE_FS_CONSTANT);
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sc.Forward(2);
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} else if (sc.Match('/', '*')) {
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sc.SetState(bEnableCode ? SCE_FS_COMMENTDOC : SCE_FS_COMMENTDOC_C);
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sc.Forward();
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} else if (bEnableCode && sc.Match('&', '&')) {
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sc.SetState(SCE_FS_COMMENTLINE);
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sc.Forward();
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} else if (sc.Match('/', '/')) {
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sc.SetState(bEnableCode ? SCE_FS_COMMENTLINEDOC : SCE_FS_COMMENTLINEDOC_C);
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sc.Forward();
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} else if (bEnableCode && sc.ch == '*' && visibleChars == 0) {
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sc.SetState(SCE_FS_COMMENT);
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} else if (sc.ch == '\"' || sc.ch == '\'') {
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sc.SetState(bEnableCode ? SCE_FS_STRING : SCE_FS_STRING_C);
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closeStringChar = sc.ch;
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} else if (closeStringChar == '>' && sc.ch == '<') {
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sc.SetState(bEnableCode ? SCE_FS_STRING : SCE_FS_STRING_C);
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} else if (sc.ch == '#' && visibleChars == 0) {
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sc.SetState(bEnableCode ? SCE_FS_PREPROCESSOR : SCE_FS_PREPROCESSOR_C);
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do { // Skip whitespace between # and preprocessor word
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sc.Forward();
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} while (IsASpaceOrTab(sc.ch) && sc.More());
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if (sc.atLineEnd) {
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sc.SetState(bEnableCode ? SCE_FS_DEFAULT : SCE_FS_DEFAULT_C);
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} else if (sc.MatchIgnoreCase("include")) {
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if (stylingWithinPreprocessor) {
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closeStringChar = '>';
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}
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} else if (sc.MatchIgnoreCase("pragma")) {
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sc.Forward(6);
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do { // Skip more whitespace until keyword
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sc.Forward();
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} while (IsASpaceOrTab(sc.ch) && sc.More());
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if (sc.MatchIgnoreCase("begindump") || sc.MatchIgnoreCase("__cstream")) {
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bEnableCode = false;
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if (stylingWithinPreprocessor) {
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sc.SetState(SCE_FS_DISABLEDCODE);
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sc.Forward(8);
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sc.ForwardSetState(SCE_FS_DEFAULT_C);
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} else {
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sc.SetState(SCE_FS_DISABLEDCODE);
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}
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} else if (sc.MatchIgnoreCase("enddump") || sc.MatchIgnoreCase("__endtext")) {
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bEnableCode = true;
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sc.SetState(SCE_FS_DISABLEDCODE);
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sc.Forward(sc.ch == '_' ? 8 : 6);
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sc.ForwardSetState(SCE_FS_DEFAULT);
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}
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}
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} else if (bEnableCode && sc.ch == '{') {
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int p = 0;
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int chSeek;
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unsigned int endPos(startPos + length);
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do { // Skip whitespace
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chSeek = sc.GetRelative(++p);
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} while (IsASpaceOrTab(chSeek) && (sc.currentPos + p < endPos));
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if (chSeek == '^') {
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sc.SetState(SCE_FS_DATE);
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} else {
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sc.SetState(SCE_FS_OPERATOR);
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}
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} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
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sc.SetState(bEnableCode ? SCE_FS_NUMBER : SCE_FS_NUMBER_C);
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} else if (IsAWordChar(sc.ch)) {
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sc.SetState(bEnableCode ? SCE_FS_IDENTIFIER : SCE_FS_IDENTIFIER_C);
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} else if (isoperator(static_cast<char>(sc.ch)) || (bEnableCode && sc.ch == '@')) {
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sc.SetState(bEnableCode ? SCE_FS_OPERATOR : SCE_FS_OPERATOR_C);
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}
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}
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if (sc.atLineEnd) {
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visibleChars = 0;
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closeStringChar = 0;
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}
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if (!IsASpace(sc.ch)) {
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visibleChars++;
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}
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}
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sc.Complete();
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}
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static void FoldFlagShipDoc(unsigned int startPos, int length, int,
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WordList *[], Accessor &styler)
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{
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int endPos = startPos + length;
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// Backtrack to previous line in case need to fix its fold status
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int lineCurrent = styler.GetLine(startPos);
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if (startPos > 0 && lineCurrent > 0) {
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lineCurrent--;
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startPos = styler.LineStart(lineCurrent);
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}
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int spaceFlags = 0;
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int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags);
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char chNext = styler[startPos];
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for (int i = startPos; i < endPos; i++) {
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char ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos-1)) {
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int lev = indentCurrent;
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int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags);
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if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
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if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
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lev |= SC_FOLDLEVELHEADERFLAG;
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} else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
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int spaceFlags2 = 0;
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int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2);
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if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
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lev |= SC_FOLDLEVELHEADERFLAG;
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}
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}
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}
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indentCurrent = indentNext;
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styler.SetLevel(lineCurrent, lev);
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lineCurrent++;
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}
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}
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}
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static const char * const FSWordListDesc[] = {
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"Keywords Commands",
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"Std Library Functions",
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"Procedure, return, exit",
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"Class (oop)",
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"Doxygen keywords",
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0
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};
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LexerModule lmFlagShip(SCLEX_FLAGSHIP, ColouriseFlagShipDoc, "flagship", FoldFlagShipDoc, FSWordListDesc);
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