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bgfx/3rdparty/scintilla/lexers/LexDMAP.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 LexDMAP.cxx
** Lexer for MSC Nastran DMAP.
** Written by Mark Robinson, based on the Fortran lexer by Chuan-jian Shen, Last changed Aug. 2013
**/
// Copyright 1998-2001 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
/***********************************************/
static inline bool IsAWordChar(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '%');
}
/**********************************************/
static inline bool IsAWordStart(const int ch) {
return (ch < 0x80) && (isalnum(ch));
}
/***************************************/
static void ColouriseDMAPDoc(unsigned int startPos, int length, int initStyle,
WordList *keywordlists[], Accessor &styler) {
WordList &keywords = *keywordlists[0];
WordList &keywords2 = *keywordlists[1];
WordList &keywords3 = *keywordlists[2];
/***************************************/
int posLineStart = 0, numNonBlank = 0;
int endPos = startPos + length;
/***************************************/
// backtrack to the nearest keyword
while ((startPos > 1) && (styler.StyleAt(startPos) != SCE_DMAP_WORD)) {
startPos--;
}
startPos = styler.LineStart(styler.GetLine(startPos));
initStyle = styler.StyleAt(startPos - 1);
StyleContext sc(startPos, endPos-startPos, initStyle, styler);
/***************************************/
for (; sc.More(); sc.Forward()) {
// remember the start position of the line
if (sc.atLineStart) {
posLineStart = sc.currentPos;
numNonBlank = 0;
sc.SetState(SCE_DMAP_DEFAULT);
}
if (!IsASpaceOrTab(sc.ch)) numNonBlank ++;
/***********************************************/
// Handle data appearing after column 72; it is ignored
int toLineStart = sc.currentPos - posLineStart;
if (toLineStart >= 72 || sc.ch == '$') {
sc.SetState(SCE_DMAP_COMMENT);
while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
continue;
}
/***************************************/
// Determine if the current state should terminate.
if (sc.state == SCE_DMAP_OPERATOR) {
sc.SetState(SCE_DMAP_DEFAULT);
} else if (sc.state == SCE_DMAP_NUMBER) {
if (!(IsAWordChar(sc.ch) || sc.ch=='\'' || sc.ch=='\"' || sc.ch=='.')) {
sc.SetState(SCE_DMAP_DEFAULT);
}
} else if (sc.state == SCE_DMAP_IDENTIFIER) {
if (!IsAWordChar(sc.ch) || (sc.ch == '%')) {
char s[100];
sc.GetCurrentLowered(s, sizeof(s));
if (keywords.InList(s)) {
sc.ChangeState(SCE_DMAP_WORD);
} else if (keywords2.InList(s)) {
sc.ChangeState(SCE_DMAP_WORD2);
} else if (keywords3.InList(s)) {
sc.ChangeState(SCE_DMAP_WORD3);
}
sc.SetState(SCE_DMAP_DEFAULT);
}
} else if (sc.state == SCE_DMAP_COMMENT) {
if (sc.ch == '\r' || sc.ch == '\n') {
sc.SetState(SCE_DMAP_DEFAULT);
}
} else if (sc.state == SCE_DMAP_STRING1) {
if (sc.ch == '\'') {
if (sc.chNext == '\'') {
sc.Forward();
} else {
sc.ForwardSetState(SCE_DMAP_DEFAULT);
}
} else if (sc.atLineEnd) {
sc.ChangeState(SCE_DMAP_STRINGEOL);
sc.ForwardSetState(SCE_DMAP_DEFAULT);
}
} else if (sc.state == SCE_DMAP_STRING2) {
if (sc.atLineEnd) {
sc.ChangeState(SCE_DMAP_STRINGEOL);
sc.ForwardSetState(SCE_DMAP_DEFAULT);
} else if (sc.ch == '\"') {
if (sc.chNext == '\"') {
sc.Forward();
} else {
sc.ForwardSetState(SCE_DMAP_DEFAULT);
}
}
}
/***************************************/
// Determine if a new state should be entered.
if (sc.state == SCE_DMAP_DEFAULT) {
if (sc.ch == '$') {
sc.SetState(SCE_DMAP_COMMENT);
} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext)) || (sc.ch == '-' && IsADigit(sc.chNext))) {
sc.SetState(SCE_F_NUMBER);
} else if (IsAWordStart(sc.ch)) {
sc.SetState(SCE_DMAP_IDENTIFIER);
} else if (sc.ch == '\"') {
sc.SetState(SCE_DMAP_STRING2);
} else if (sc.ch == '\'') {
sc.SetState(SCE_DMAP_STRING1);
} else if (isoperator(static_cast<char>(sc.ch))) {
sc.SetState(SCE_DMAP_OPERATOR);
}
}
}
sc.Complete();
}
/***************************************/
// To determine the folding level depending on keywords
static int classifyFoldPointDMAP(const char* s, const char* prevWord) {
int lev = 0;
if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) || strcmp(s, "enddo") == 0 || strcmp(s, "endif") == 0) {
lev = -1;
} else if ((strcmp(prevWord, "do") == 0 && strcmp(s, "while") == 0) || strcmp(s, "then") == 0) {
lev = 1;
}
return lev;
}
// Folding the code
static void FoldDMAPDoc(unsigned int startPos, int length, int initStyle,
WordList *[], Accessor &styler) {
//
// bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
// Do not know how to fold the comment at the moment.
//
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
unsigned int endPos = startPos + length;
int visibleChars = 0;
int lineCurrent = styler.GetLine(startPos);
int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
int levelCurrent = levelPrev;
char chNext = styler[startPos];
int styleNext = styler.StyleAt(startPos);
int style = initStyle;
/***************************************/
int lastStart = 0;
char prevWord[32] = "";
/***************************************/
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 ((stylePrev == SCE_DMAP_DEFAULT || stylePrev == SCE_DMAP_OPERATOR || stylePrev == SCE_DMAP_COMMENT) && (style == SCE_DMAP_WORD)) {
// Store last word and label start point.
lastStart = i;
}
/***************************************/
if (style == SCE_DMAP_WORD) {
if(iswordchar(ch) && !iswordchar(chNext)) {
char s[32];
unsigned int k;
for(k=0; (k<31 ) && (k<i-lastStart+1 ); k++) {
s[k] = static_cast<char>(tolower(styler[lastStart+k]));
}
s[k] = '\0';
levelCurrent += classifyFoldPointDMAP(s, prevWord);
strcpy(prevWord, s);
}
}
if (atEOL) {
int lev = levelPrev;
if (visibleChars == 0 && foldCompact)
lev |= SC_FOLDLEVELWHITEFLAG;
if ((levelCurrent > levelPrev) && (visibleChars > 0))
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent)) {
styler.SetLevel(lineCurrent, lev);
}
lineCurrent++;
levelPrev = levelCurrent;
visibleChars = 0;
strcpy(prevWord, "");
}
/***************************************/
if (!isspacechar(ch)) visibleChars++;
}
/***************************************/
// Fill in the real level of the next line, keeping the current flags as they will be filled in later
int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}
/***************************************/
static const char * const DMAPWordLists[] = {
"Primary keywords and identifiers",
"Intrinsic functions",
"Extended and user defined functions",
0,
};
/***************************************/
LexerModule lmDMAP(SCLEX_DMAP, ColouriseDMAPDoc, "DMAP", FoldDMAPDoc, DMAPWordLists);
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