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geany/scintilla/lexers/LexCmake.cxx
Enrico Tröger 2c7d37dde4 Update Scintilla to version 2.22. 
Keep Scintilla's directory structure mostly and only remove unused lexers.

For now, this will break the build. The build systems have to be updated as well as scintilla_changes.patch.


git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/branches/unstable@5437 ea778897-0a13-0410-b9d1-a72fbfd435f5
2010-11-24 21:23:05 +00:00

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// Scintilla source code edit control
/** @file LexCmake.cxx
** Lexer for Cmake
**/
// Copyright 2007 by Cristian Adam <cristian [dot] adam [at] gmx [dot] net>
// based on the NSIS lexer
// 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 "PropSetSimple.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 bool isCmakeNumber(char ch)
{
return(ch >= '0' && ch <= '9');
}
static bool isCmakeChar(char ch)
{
return(ch == '.' ) || (ch == '_' ) || isCmakeNumber(ch) || (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z');
}
static bool isCmakeLetter(char ch)
{
return(ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z');
}
static bool CmakeNextLineHasElse(unsigned int start, unsigned int end, Accessor &styler)
{
int nNextLine = -1;
for ( unsigned int i = start; i < end; i++ ) {
char cNext = styler.SafeGetCharAt( i );
if ( cNext == '\n' ) {
nNextLine = i+1;
break;
}
}
if ( nNextLine == -1 ) // We never foudn the next line...
return false;
for ( unsigned int firstChar = nNextLine; firstChar < end; firstChar++ ) {
char cNext = styler.SafeGetCharAt( firstChar );
if ( cNext == ' ' )
continue;
if ( cNext == '\t' )
continue;
if ( styler.Match(firstChar, "ELSE") || styler.Match(firstChar, "else"))
return true;
break;
}
return false;
}
static int calculateFoldCmake(unsigned int start, unsigned int end, int foldlevel, Accessor &styler, bool bElse)
{
// If the word is too long, it is not what we are looking for
if ( end - start > 20 )
return foldlevel;
int newFoldlevel = foldlevel;
char s[20]; // The key word we are looking for has atmost 13 characters
for (unsigned int i = 0; i < end - start + 1 && i < 19; i++) {
s[i] = static_cast<char>( styler[ start + i ] );
s[i + 1] = '\0';
}
if ( CompareCaseInsensitive(s, "IF") == 0 || CompareCaseInsensitive(s, "WHILE") == 0
|| CompareCaseInsensitive(s, "MACRO") == 0 || CompareCaseInsensitive(s, "FOREACH") == 0
|| CompareCaseInsensitive(s, "ELSEIF") == 0 )
newFoldlevel++;
else if ( CompareCaseInsensitive(s, "ENDIF") == 0 || CompareCaseInsensitive(s, "ENDWHILE") == 0
|| CompareCaseInsensitive(s, "ENDMACRO") == 0 || CompareCaseInsensitive(s, "ENDFOREACH") == 0)
newFoldlevel--;
else if ( bElse && CompareCaseInsensitive(s, "ELSEIF") == 0 )
newFoldlevel++;
else if ( bElse && CompareCaseInsensitive(s, "ELSE") == 0 )
newFoldlevel++;
return newFoldlevel;
}
static int classifyWordCmake(unsigned int start, unsigned int end, WordList *keywordLists[], Accessor &styler )
{
char word[100] = {0};
char lowercaseWord[100] = {0};
WordList &Commands = *keywordLists[0];
WordList &Parameters = *keywordLists[1];
WordList &UserDefined = *keywordLists[2];
for (unsigned int i = 0; i < end - start + 1 && i < 99; i++) {
word[i] = static_cast<char>( styler[ start + i ] );
lowercaseWord[i] = static_cast<char>(tolower(word[i]));
}
// Check for special words...
if ( CompareCaseInsensitive(word, "MACRO") == 0 || CompareCaseInsensitive(word, "ENDMACRO") == 0 )
return SCE_CMAKE_MACRODEF;
if ( CompareCaseInsensitive(word, "IF") == 0 || CompareCaseInsensitive(word, "ENDIF") == 0 )
return SCE_CMAKE_IFDEFINEDEF;
if ( CompareCaseInsensitive(word, "ELSEIF") == 0 || CompareCaseInsensitive(word, "ELSE") == 0 )
return SCE_CMAKE_IFDEFINEDEF;
if ( CompareCaseInsensitive(word, "WHILE") == 0 || CompareCaseInsensitive(word, "ENDWHILE") == 0)
return SCE_CMAKE_WHILEDEF;
if ( CompareCaseInsensitive(word, "FOREACH") == 0 || CompareCaseInsensitive(word, "ENDFOREACH") == 0)
return SCE_CMAKE_FOREACHDEF;
if ( Commands.InList(lowercaseWord) )
return SCE_CMAKE_COMMANDS;
if ( Parameters.InList(word) )
return SCE_CMAKE_PARAMETERS;
if ( UserDefined.InList(word) )
return SCE_CMAKE_USERDEFINED;
if ( strlen(word) > 3 ) {
if ( word[1] == '{' && word[strlen(word)-1] == '}' )
return SCE_CMAKE_VARIABLE;
}
// To check for numbers
if ( isCmakeNumber( word[0] ) ) {
bool bHasSimpleCmakeNumber = true;
for (unsigned int j = 1; j < end - start + 1 && j < 99; j++) {
if ( !isCmakeNumber( word[j] ) ) {
bHasSimpleCmakeNumber = false;
break;
}
}
if ( bHasSimpleCmakeNumber )
return SCE_CMAKE_NUMBER;
}
return SCE_CMAKE_DEFAULT;
}
static void ColouriseCmakeDoc(unsigned int startPos, int length, int, WordList *keywordLists[], Accessor &styler)
{
int state = SCE_CMAKE_DEFAULT;
if ( startPos > 0 )
state = styler.StyleAt(startPos-1); // Use the style from the previous line, usually default, but could be commentbox
styler.StartAt( startPos );
styler.GetLine( startPos );
unsigned int nLengthDoc = startPos + length;
styler.StartSegment( startPos );
char cCurrChar;
bool bVarInString = false;
bool bClassicVarInString = false;
unsigned int i;
for ( i = startPos; i < nLengthDoc; i++ ) {
cCurrChar = styler.SafeGetCharAt( i );
char cNextChar = styler.SafeGetCharAt(i+1);
switch (state) {
case SCE_CMAKE_DEFAULT:
if ( cCurrChar == '#' ) { // we have a comment line
styler.ColourTo(i-1, state );
state = SCE_CMAKE_COMMENT;
break;
}
if ( cCurrChar == '"' ) {
styler.ColourTo(i-1, state );
state = SCE_CMAKE_STRINGDQ;
bVarInString = false;
bClassicVarInString = false;
break;
}
if ( cCurrChar == '\'' ) {
styler.ColourTo(i-1, state );
state = SCE_CMAKE_STRINGRQ;
bVarInString = false;
bClassicVarInString = false;
break;
}
if ( cCurrChar == '`' ) {
styler.ColourTo(i-1, state );
state = SCE_CMAKE_STRINGLQ;
bVarInString = false;
bClassicVarInString = false;
break;
}
// CMake Variable
if ( cCurrChar == '$' || isCmakeChar(cCurrChar)) {
styler.ColourTo(i-1,state);
state = SCE_CMAKE_VARIABLE;
// If it is a number, we must check and set style here first...
if ( isCmakeNumber(cCurrChar) && (cNextChar == '\t' || cNextChar == ' ' || cNextChar == '\r' || cNextChar == '\n' ) )
styler.ColourTo( i, SCE_CMAKE_NUMBER);
break;
}
break;
case SCE_CMAKE_COMMENT:
if ( cNextChar == '\n' || cNextChar == '\r' ) {
// Special case:
if ( cCurrChar == '\\' ) {
styler.ColourTo(i-2,state);
styler.ColourTo(i,SCE_CMAKE_DEFAULT);
}
else {
styler.ColourTo(i,state);
state = SCE_CMAKE_DEFAULT;
}
}
break;
case SCE_CMAKE_STRINGDQ:
case SCE_CMAKE_STRINGLQ:
case SCE_CMAKE_STRINGRQ:
if ( styler.SafeGetCharAt(i-1) == '\\' && styler.SafeGetCharAt(i-2) == '$' )
break; // Ignore the next character, even if it is a quote of some sort
if ( cCurrChar == '"' && state == SCE_CMAKE_STRINGDQ ) {
styler.ColourTo(i,state);
state = SCE_CMAKE_DEFAULT;
break;
}
if ( cCurrChar == '`' && state == SCE_CMAKE_STRINGLQ ) {
styler.ColourTo(i,state);
state = SCE_CMAKE_DEFAULT;
break;
}
if ( cCurrChar == '\'' && state == SCE_CMAKE_STRINGRQ ) {
styler.ColourTo(i,state);
state = SCE_CMAKE_DEFAULT;
break;
}
if ( cNextChar == '\r' || cNextChar == '\n' ) {
int nCurLine = styler.GetLine(i+1);
int nBack = i;
// We need to check if the previous line has a \ in it...
bool bNextLine = false;
while ( nBack > 0 ) {
if ( styler.GetLine(nBack) != nCurLine )
break;
char cTemp = styler.SafeGetCharAt(nBack, 'a'); // Letter 'a' is safe here
if ( cTemp == '\\' ) {
bNextLine = true;
break;
}
if ( cTemp != '\r' && cTemp != '\n' && cTemp != '\t' && cTemp != ' ' )
break;
nBack--;
}
if ( bNextLine ) {
styler.ColourTo(i+1,state);
}
if ( bNextLine == false ) {
styler.ColourTo(i,state);
state = SCE_CMAKE_DEFAULT;
}
}
break;
case SCE_CMAKE_VARIABLE:
// CMake Variable:
if ( cCurrChar == '$' )
state = SCE_CMAKE_DEFAULT;
else if ( cCurrChar == '\\' && (cNextChar == 'n' || cNextChar == 'r' || cNextChar == 't' ) )
state = SCE_CMAKE_DEFAULT;
else if ( (isCmakeChar(cCurrChar) && !isCmakeChar( cNextChar) && cNextChar != '}') || cCurrChar == '}' ) {
state = classifyWordCmake( styler.GetStartSegment(), i, keywordLists, styler );
styler.ColourTo( i, state);
state = SCE_CMAKE_DEFAULT;
}
else if ( !isCmakeChar( cCurrChar ) && cCurrChar != '{' && cCurrChar != '}' ) {
if ( classifyWordCmake( styler.GetStartSegment(), i-1, keywordLists, styler) == SCE_CMAKE_NUMBER )
styler.ColourTo( i-1, SCE_CMAKE_NUMBER );
state = SCE_CMAKE_DEFAULT;
if ( cCurrChar == '"' ) {
state = SCE_CMAKE_STRINGDQ;
bVarInString = false;
bClassicVarInString = false;
}
else if ( cCurrChar == '`' ) {
state = SCE_CMAKE_STRINGLQ;
bVarInString = false;
bClassicVarInString = false;
}
else if ( cCurrChar == '\'' ) {
state = SCE_CMAKE_STRINGRQ;
bVarInString = false;
bClassicVarInString = false;
}
else if ( cCurrChar == '#' ) {
state = SCE_CMAKE_COMMENT;
}
}
break;
}
if ( state == SCE_CMAKE_COMMENT) {
styler.ColourTo(i,state);
}
else if ( state == SCE_CMAKE_STRINGDQ || state == SCE_CMAKE_STRINGLQ || state == SCE_CMAKE_STRINGRQ ) {
bool bIngoreNextDollarSign = false;
if ( bVarInString && cCurrChar == '$' ) {
bVarInString = false;
bIngoreNextDollarSign = true;
}
else if ( bVarInString && cCurrChar == '\\' && (cNextChar == 'n' || cNextChar == 'r' || cNextChar == 't' || cNextChar == '"' || cNextChar == '`' || cNextChar == '\'' ) ) {
styler.ColourTo( i+1, SCE_CMAKE_STRINGVAR);
bVarInString = false;
bIngoreNextDollarSign = false;
}
else if ( bVarInString && !isCmakeChar(cNextChar) ) {
int nWordState = classifyWordCmake( styler.GetStartSegment(), i, keywordLists, styler);
if ( nWordState == SCE_CMAKE_VARIABLE )
styler.ColourTo( i, SCE_CMAKE_STRINGVAR);
bVarInString = false;
}
// Covers "${TEST}..."
else if ( bClassicVarInString && cNextChar == '}' ) {
styler.ColourTo( i+1, SCE_CMAKE_STRINGVAR);
bClassicVarInString = false;
}
// Start of var in string
if ( !bIngoreNextDollarSign && cCurrChar == '$' && cNextChar == '{' ) {
styler.ColourTo( i-1, state);
bClassicVarInString = true;
bVarInString = false;
}
else if ( !bIngoreNextDollarSign && cCurrChar == '$' ) {
styler.ColourTo( i-1, state);
bVarInString = true;
bClassicVarInString = false;
}
}
}
// Colourise remaining document
styler.ColourTo(nLengthDoc-1,state);
}
static void FoldCmakeDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler)
{
// No folding enabled, no reason to continue...
if ( styler.GetPropertyInt("fold") == 0 )
return;
bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) == 1;
int lineCurrent = styler.GetLine(startPos);
unsigned int safeStartPos = styler.LineStart( lineCurrent );
bool bArg1 = true;
int nWordStart = -1;
int levelCurrent = SC_FOLDLEVELBASE;
if (lineCurrent > 0)
levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
int levelNext = levelCurrent;
for (unsigned int i = safeStartPos; i < startPos + length; i++) {
char chCurr = styler.SafeGetCharAt(i);
if ( bArg1 ) {
if ( nWordStart == -1 && (isCmakeLetter(chCurr)) ) {
nWordStart = i;
}
else if ( isCmakeLetter(chCurr) == false && nWordStart > -1 ) {
int newLevel = calculateFoldCmake( nWordStart, i-1, levelNext, styler, foldAtElse);
if ( newLevel == levelNext ) {
if ( foldAtElse ) {
if ( CmakeNextLineHasElse(i, startPos + length, styler) )
levelNext--;
}
}
else
levelNext = newLevel;
bArg1 = false;
}
}
if ( chCurr == '\n' ) {
if ( bArg1 && foldAtElse) {
if ( CmakeNextLineHasElse(i, startPos + length, styler) )
levelNext--;
}
// If we are on a new line...
int levelUse = levelCurrent;
int lev = levelUse | levelNext << 16;
if (levelUse < levelNext )
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent))
styler.SetLevel(lineCurrent, lev);
lineCurrent++;
levelCurrent = levelNext;
bArg1 = true; // New line, lets look at first argument again
nWordStart = -1;
}
}
int levelUse = levelCurrent;
int lev = levelUse | levelNext << 16;
if (levelUse < levelNext)
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent))
styler.SetLevel(lineCurrent, lev);
}
static const char * const cmakeWordLists[] = {
"Commands",
"Parameters",
"UserDefined",
0,
0,};
LexerModule lmCmake(SCLEX_CMAKE, ColouriseCmakeDoc, "cmake", FoldCmakeDoc, cmakeWordLists);
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