229 lines
8.9 KiB
C++
229 lines
8.9 KiB
C++
// Scintilla source code edit control
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/** @file LexDMAP.cxx
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** Lexer for MSC Nastran DMAP.
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** Written by Mark Robinson, based on the Fortran lexer by Chuan-jian Shen, Last changed Aug. 2013
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**/
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// Copyright 1998-2001 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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/***************************************/
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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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/***************************************/
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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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/***************************************/
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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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/***********************************************/
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static inline bool IsAWordChar(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '%');
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}
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/**********************************************/
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static inline bool IsAWordStart(const int ch) {
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return (ch < 0x80) && (isalnum(ch));
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}
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/***************************************/
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static void ColouriseDMAPDoc(unsigned int startPos, int length, int initStyle,
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WordList *keywordlists[], Accessor &styler) {
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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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/***************************************/
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int posLineStart = 0, numNonBlank = 0;
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int endPos = startPos + length;
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/***************************************/
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// backtrack to the nearest keyword
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while ((startPos > 1) && (styler.StyleAt(startPos) != SCE_DMAP_WORD)) {
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startPos--;
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}
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startPos = styler.LineStart(styler.GetLine(startPos));
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initStyle = styler.StyleAt(startPos - 1);
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StyleContext sc(startPos, endPos-startPos, initStyle, styler);
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/***************************************/
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for (; sc.More(); sc.Forward()) {
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// remember the start position of the line
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if (sc.atLineStart) {
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posLineStart = sc.currentPos;
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numNonBlank = 0;
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sc.SetState(SCE_DMAP_DEFAULT);
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}
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if (!IsASpaceOrTab(sc.ch)) numNonBlank ++;
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/***********************************************/
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// Handle data appearing after column 72; it is ignored
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int toLineStart = sc.currentPos - posLineStart;
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if (toLineStart >= 72 || sc.ch == '$') {
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sc.SetState(SCE_DMAP_COMMENT);
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while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
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continue;
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}
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/***************************************/
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// Determine if the current state should terminate.
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if (sc.state == SCE_DMAP_OPERATOR) {
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sc.SetState(SCE_DMAP_DEFAULT);
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} else if (sc.state == SCE_DMAP_NUMBER) {
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if (!(IsAWordChar(sc.ch) || sc.ch=='\'' || sc.ch=='\"' || sc.ch=='.')) {
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sc.SetState(SCE_DMAP_DEFAULT);
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}
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} else if (sc.state == SCE_DMAP_IDENTIFIER) {
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if (!IsAWordChar(sc.ch) || (sc.ch == '%')) {
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char s[100];
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sc.GetCurrentLowered(s, sizeof(s));
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if (keywords.InList(s)) {
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sc.ChangeState(SCE_DMAP_WORD);
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} else if (keywords2.InList(s)) {
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sc.ChangeState(SCE_DMAP_WORD2);
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} else if (keywords3.InList(s)) {
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sc.ChangeState(SCE_DMAP_WORD3);
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}
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sc.SetState(SCE_DMAP_DEFAULT);
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}
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} else if (sc.state == SCE_DMAP_COMMENT) {
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if (sc.ch == '\r' || sc.ch == '\n') {
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sc.SetState(SCE_DMAP_DEFAULT);
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}
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} else if (sc.state == SCE_DMAP_STRING1) {
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if (sc.ch == '\'') {
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if (sc.chNext == '\'') {
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sc.Forward();
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} else {
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sc.ForwardSetState(SCE_DMAP_DEFAULT);
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}
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} else if (sc.atLineEnd) {
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sc.ChangeState(SCE_DMAP_STRINGEOL);
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sc.ForwardSetState(SCE_DMAP_DEFAULT);
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}
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} else if (sc.state == SCE_DMAP_STRING2) {
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if (sc.atLineEnd) {
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sc.ChangeState(SCE_DMAP_STRINGEOL);
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sc.ForwardSetState(SCE_DMAP_DEFAULT);
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} else if (sc.ch == '\"') {
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if (sc.chNext == '\"') {
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sc.Forward();
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} else {
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sc.ForwardSetState(SCE_DMAP_DEFAULT);
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}
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}
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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_DMAP_DEFAULT) {
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if (sc.ch == '$') {
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sc.SetState(SCE_DMAP_COMMENT);
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} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext)) || (sc.ch == '-' && IsADigit(sc.chNext))) {
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sc.SetState(SCE_F_NUMBER);
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} else if (IsAWordStart(sc.ch)) {
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sc.SetState(SCE_DMAP_IDENTIFIER);
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} else if (sc.ch == '\"') {
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sc.SetState(SCE_DMAP_STRING2);
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} else if (sc.ch == '\'') {
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sc.SetState(SCE_DMAP_STRING1);
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} else if (isoperator(static_cast<char>(sc.ch))) {
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sc.SetState(SCE_DMAP_OPERATOR);
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}
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}
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}
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sc.Complete();
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}
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/***************************************/
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// To determine the folding level depending on keywords
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static int classifyFoldPointDMAP(const char* s, const char* prevWord) {
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int lev = 0;
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if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) || strcmp(s, "enddo") == 0 || strcmp(s, "endif") == 0) {
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lev = -1;
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} else if ((strcmp(prevWord, "do") == 0 && strcmp(s, "while") == 0) || strcmp(s, "then") == 0) {
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lev = 1;
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}
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return lev;
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}
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// Folding the code
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static void FoldDMAPDoc(unsigned int startPos, int length, int initStyle,
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WordList *[], Accessor &styler) {
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//
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// bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
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// Do not know how to fold the comment at the moment.
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//
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bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
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unsigned int endPos = startPos + length;
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int visibleChars = 0;
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int lineCurrent = styler.GetLine(startPos);
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int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
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int levelCurrent = levelPrev;
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char chNext = styler[startPos];
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int styleNext = styler.StyleAt(startPos);
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int style = initStyle;
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/***************************************/
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int lastStart = 0;
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char prevWord[32] = "";
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/***************************************/
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for (unsigned 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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int stylePrev = style;
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style = styleNext;
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styleNext = styler.StyleAt(i + 1);
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bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
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//
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if ((stylePrev == SCE_DMAP_DEFAULT || stylePrev == SCE_DMAP_OPERATOR || stylePrev == SCE_DMAP_COMMENT) && (style == SCE_DMAP_WORD)) {
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// Store last word and label start point.
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lastStart = i;
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}
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/***************************************/
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if (style == SCE_DMAP_WORD) {
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if(iswordchar(ch) && !iswordchar(chNext)) {
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char s[32];
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unsigned int k;
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for(k=0; (k<31 ) && (k<i-lastStart+1 ); k++) {
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s[k] = static_cast<char>(tolower(styler[lastStart+k]));
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}
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s[k] = '\0';
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levelCurrent += classifyFoldPointDMAP(s, prevWord);
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strcpy(prevWord, s);
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}
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}
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if (atEOL) {
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int lev = levelPrev;
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if (visibleChars == 0 && foldCompact)
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lev |= SC_FOLDLEVELWHITEFLAG;
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if ((levelCurrent > levelPrev) && (visibleChars > 0))
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lev |= SC_FOLDLEVELHEADERFLAG;
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if (lev != styler.LevelAt(lineCurrent)) {
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styler.SetLevel(lineCurrent, lev);
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}
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lineCurrent++;
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levelPrev = levelCurrent;
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visibleChars = 0;
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strcpy(prevWord, "");
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}
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/***************************************/
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if (!isspacechar(ch)) visibleChars++;
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}
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/***************************************/
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// Fill in the real level of the next line, keeping the current flags as they will be filled in later
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int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
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styler.SetLevel(lineCurrent, levelPrev | flagsNext);
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}
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/***************************************/
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static const char * const DMAPWordLists[] = {
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"Primary keywords and identifiers",
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"Intrinsic functions",
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"Extended and user defined functions",
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0,
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};
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/***************************************/
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LexerModule lmDMAP(SCLEX_DMAP, ColouriseDMAPDoc, "DMAP", FoldDMAPDoc, DMAPWordLists);
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