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notepad-plus-plus/scintilla/lexers/LexScriptol.cxx
Don Ho 0152ded3ff [UPDATE] Scintilla update from 2.21 to 2.25 
git-svn-id: svn://svn.tuxfamily.org/svnroot/notepadplus/repository/trunk@742 f5eea248-9336-0410-98b8-ebc06183d4e3
2011-03-22 00:16:49 +00:00

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// Scintilla source code edit control
/** @file LexScriptol.cxx
** Lexer for Scriptol.
**/
#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 void ClassifyWordSol(unsigned int start, unsigned int end, WordList &keywords, Accessor &styler, char *prevWord)
{
char s[100];
bool wordIsNumber = isdigit(styler[start]) != 0;
for (unsigned int i = 0; i < end - start + 1 && i < 30; i++)
{
s[i] = styler[start + i];
s[i + 1] = '\0';
}
char chAttr = SCE_SCRIPTOL_IDENTIFIER;
if (0 == strcmp(prevWord, "class")) chAttr = SCE_SCRIPTOL_CLASSNAME;
else if (wordIsNumber) chAttr = SCE_SCRIPTOL_NUMBER;
else if (keywords.InList(s)) chAttr = SCE_SCRIPTOL_KEYWORD;
else for (unsigned int i = 0; i < end - start + 1; i++) // test dotted idents
{
if (styler[start + i] == '.')
{
styler.ColourTo(start + i - 1, chAttr);
styler.ColourTo(start + i, SCE_SCRIPTOL_OPERATOR);
}
}
styler.ColourTo(end, chAttr);
strcpy(prevWord, s);
}
static bool IsSolComment(Accessor &styler, int pos, int len)
{
if(len > 0)
{
char c = styler[pos];
if(c == '`') return true;
if(len > 1)
{
if(c == '/')
{
c = styler[pos + 1];
if(c == '/') return true;
if(c == '*') return true;
}
}
}
return false;
}
static bool IsSolStringStart(char ch)
{
if (ch == '\'' || ch == '"') return true;
return false;
}
static bool IsSolWordStart(char ch)
{
return (iswordchar(ch) && !IsSolStringStart(ch));
}
static int GetSolStringState(Accessor &styler, int i, int *nextIndex)
{
char ch = styler.SafeGetCharAt(i);
char chNext = styler.SafeGetCharAt(i + 1);
if (ch != '\"' && ch != '\'')
{
*nextIndex = i + 1;
return SCE_SCRIPTOL_DEFAULT;
}
// ch is either single or double quotes in string
// code below seem non-sense but is here for future extensions
if (ch == chNext && ch == styler.SafeGetCharAt(i + 2))
{
*nextIndex = i + 3;
if(ch == '\"') return SCE_SCRIPTOL_TRIPLE;
if(ch == '\'') return SCE_SCRIPTOL_TRIPLE;
return SCE_SCRIPTOL_STRING;
}
else
{
*nextIndex = i + 1;
if (ch == '"') return SCE_SCRIPTOL_STRING;
else return SCE_SCRIPTOL_STRING;
}
}
static void ColouriseSolDoc(unsigned int startPos, int length, int initStyle,
WordList *keywordlists[], Accessor &styler)
{
int lengthDoc = startPos + length;
char stringType = '\"';
if (startPos > 0)
{
int lineCurrent = styler.GetLine(startPos);
if (lineCurrent > 0)
{
startPos = styler.LineStart(lineCurrent-1);
if (startPos == 0) initStyle = SCE_SCRIPTOL_DEFAULT;
else initStyle = styler.StyleAt(startPos-1);
}
}
styler.StartAt(startPos, 127);
WordList &keywords = *keywordlists[0];
int whingeLevel = styler.GetPropertyInt("tab.timmy.whinge.level");
char prevWord[200];
prevWord[0] = '\0';
if (length == 0) return;
int state = initStyle & 31;
int nextIndex = 0;
char chPrev = ' ';
char chPrev2 = ' ';
char chNext = styler[startPos];
styler.StartSegment(startPos);
bool atStartLine = true;
int spaceFlags = 0;
for (int i = startPos; i < lengthDoc; i++)
{
if (atStartLine)
{
char chBad = static_cast<char>(64);
char chGood = static_cast<char>(0);
char chFlags = chGood;
if (whingeLevel == 1)
{
chFlags = (spaceFlags & wsInconsistent) ? chBad : chGood;
}
else if (whingeLevel == 2)
{
chFlags = (spaceFlags & wsSpaceTab) ? chBad : chGood;
}
else if (whingeLevel == 3)
{
chFlags = (spaceFlags & wsSpace) ? chBad : chGood;
}
else if (whingeLevel == 4)
{
chFlags = (spaceFlags & wsTab) ? chBad : chGood;
}
styler.SetFlags(chFlags, static_cast<char>(state));
atStartLine = false;
}
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == lengthDoc))
{
if ((state == SCE_SCRIPTOL_DEFAULT) ||
(state == SCE_SCRIPTOL_TRIPLE) ||
(state == SCE_SCRIPTOL_COMMENTBLOCK))
{
styler.ColourTo(i, state);
}
atStartLine = true;
}
if (styler.IsLeadByte(ch))
{
chNext = styler.SafeGetCharAt(i + 2);
chPrev = ' ';
chPrev2 = ' ';
i += 1;
continue;
}
if (state == SCE_SCRIPTOL_STRINGEOL)
{
if (ch != '\r' && ch != '\n')
{
styler.ColourTo(i - 1, state);
state = SCE_SCRIPTOL_DEFAULT;
}
}
if (state == SCE_SCRIPTOL_DEFAULT)
{
if (IsSolWordStart(ch))
{
styler.ColourTo(i - 1, state);
state = SCE_SCRIPTOL_KEYWORD;
}
else if (ch == '`')
{
styler.ColourTo(i - 1, state);
state = SCE_SCRIPTOL_COMMENTLINE;
}
else if (ch == '/')
{
styler.ColourTo(i - 1, state);
if(chNext == '/') state = SCE_SCRIPTOL_CSTYLE;
if(chNext == '*') state = SCE_SCRIPTOL_COMMENTBLOCK;
}
else if (IsSolStringStart(ch))
{
styler.ColourTo(i - 1, state);
state = GetSolStringState(styler, i, &nextIndex);
if(state == SCE_SCRIPTOL_STRING)
{
stringType = ch;
}
if (nextIndex != i + 1)
{
i = nextIndex - 1;
ch = ' ';
chPrev = ' ';
chNext = styler.SafeGetCharAt(i + 1);
}
}
else if (isoperator(ch))
{
styler.ColourTo(i - 1, state);
styler.ColourTo(i, SCE_SCRIPTOL_OPERATOR);
}
}
else if (state == SCE_SCRIPTOL_KEYWORD)
{
if (!iswordchar(ch))
{
ClassifyWordSol(styler.GetStartSegment(), i - 1, keywords, styler, prevWord);
state = SCE_SCRIPTOL_DEFAULT;
if (ch == '`')
{
state = chNext == '`' ? SCE_SCRIPTOL_PERSISTENT : SCE_SCRIPTOL_COMMENTLINE;
}
else if (IsSolStringStart(ch))
{
styler.ColourTo(i - 1, state);
state = GetSolStringState(styler, i, &nextIndex);
if (nextIndex != i + 1)
{
i = nextIndex - 1;
ch = ' ';
chPrev = ' ';
chNext = styler.SafeGetCharAt(i + 1);
}
}
else if (isoperator(ch))
{
styler.ColourTo(i, SCE_SCRIPTOL_OPERATOR);
}
}
}
else
{
if (state == SCE_SCRIPTOL_COMMENTLINE ||
state == SCE_SCRIPTOL_PERSISTENT ||
state == SCE_SCRIPTOL_CSTYLE)
{
if (ch == '\r' || ch == '\n')
{
styler.ColourTo(i - 1, state);
state = SCE_SCRIPTOL_DEFAULT;
}
}
else if(state == SCE_SCRIPTOL_COMMENTBLOCK)
{
if(chPrev == '*' && ch == '/')
{
styler.ColourTo(i, state);
state = SCE_SCRIPTOL_DEFAULT;
}
}
else if ((state == SCE_SCRIPTOL_STRING) ||
(state == SCE_SCRIPTOL_CHARACTER))
{
if ((ch == '\r' || ch == '\n') && (chPrev != '\\'))
{
styler.ColourTo(i - 1, state);
state = SCE_SCRIPTOL_STRINGEOL;
}
else if (ch == '\\')
{
if (chNext == '\"' || chNext == '\'' || chNext == '\\')
{
i++;
ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
}
}
else if ((ch == '\"') || (ch == '\''))
{
// must match the entered quote type
if(ch == stringType)
{
styler.ColourTo(i, state);
state = SCE_SCRIPTOL_DEFAULT;
}
}
}
else if (state == SCE_SCRIPTOL_TRIPLE)
{
if ((ch == '\'' && chPrev == '\'' && chPrev2 == '\'') ||
(ch == '\"' && chPrev == '\"' && chPrev2 == '\"'))
{
styler.ColourTo(i, state);
state = SCE_SCRIPTOL_DEFAULT;
}
}
}
chPrev2 = chPrev;
chPrev = ch;
}
if (state == SCE_SCRIPTOL_KEYWORD)
{
ClassifyWordSol(styler.GetStartSegment(),
lengthDoc-1, keywords, styler, prevWord);
}
else
{
styler.ColourTo(lengthDoc-1, state);
}
}
static void FoldSolDoc(unsigned int startPos, int length, int initStyle,
WordList *[], Accessor &styler)
{
int lengthDoc = startPos + length;
int lineCurrent = styler.GetLine(startPos);
if (startPos > 0)
{
if (lineCurrent > 0)
{
lineCurrent--;
startPos = styler.LineStart(lineCurrent);
if (startPos == 0)
initStyle = SCE_SCRIPTOL_DEFAULT;
else
initStyle = styler.StyleAt(startPos-1);
}
}
int state = initStyle & 31;
int spaceFlags = 0;
int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsSolComment);
if ((state == SCE_SCRIPTOL_TRIPLE))
indentCurrent |= SC_FOLDLEVELWHITEFLAG;
char chNext = styler[startPos];
for (int i = startPos; i < lengthDoc; i++)
{
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
int style = styler.StyleAt(i) & 31;
if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == lengthDoc))
{
int lev = indentCurrent;
int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsSolComment);
if (style == SCE_SCRIPTOL_TRIPLE)
indentNext |= SC_FOLDLEVELWHITEFLAG;
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, IsSolComment);
if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK))
{
lev |= SC_FOLDLEVELHEADERFLAG;
}
}
}
indentCurrent = indentNext;
styler.SetLevel(lineCurrent, lev);
lineCurrent++;
}
}
}
LexerModule lmScriptol(SCLEX_SCRIPTOL, ColouriseSolDoc, "scriptol", FoldSolDoc);
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