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bgfx/3rdparty/scintilla/lexers/LexCmake.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 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 "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 == '$' || isCmakeChar(cCurrChar)) {
styler.ColourTo(i-1,state);
state = SCE_CMAKE_VARIABLE;
// If it is a number, we must check and set style here first...
if ( isCmakeNumber(cCurrChar) && (cNextChar == '\t' || cNextChar == ' ' || cNextChar == '\r' || cNextChar == '\n' ) )
styler.ColourTo( i, SCE_CMAKE_NUMBER);
break;
}
break;
case SCE_CMAKE_COMMENT:
if ( cCurrChar == '\n' || cCurrChar == '\r' ) {
if ( styler.SafeGetCharAt(i-1) == '\\' ) {
styler.ColourTo(i-2,state);
styler.ColourTo(i-1,SCE_CMAKE_DEFAULT);
}
else {
styler.ColourTo(i-1,state);
state = SCE_CMAKE_DEFAULT;
}
}
break;
case SCE_CMAKE_STRINGDQ:
case SCE_CMAKE_STRINGLQ:
case SCE_CMAKE_STRINGRQ:
if ( styler.SafeGetCharAt(i-1) == '\\' && styler.SafeGetCharAt(i-2) == '$' )
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 == '$' )
state = SCE_CMAKE_DEFAULT;
else if ( cCurrChar == '\\' && (cNextChar == 'n' || cNextChar == 'r' || cNextChar == 't' ) )
state = SCE_CMAKE_DEFAULT;
else if ( (isCmakeChar(cCurrChar) && !isCmakeChar( cNextChar) && cNextChar != '}') || cCurrChar == '}' ) {
state = classifyWordCmake( styler.GetStartSegment(), i, keywordLists, styler );
styler.ColourTo( i, state);
state = SCE_CMAKE_DEFAULT;
}
else if ( !isCmakeChar( cCurrChar ) && cCurrChar != '{' && cCurrChar != '}' ) {
if ( classifyWordCmake( styler.GetStartSegment(), i-1, keywordLists, styler) == SCE_CMAKE_NUMBER )
styler.ColourTo( i-1, SCE_CMAKE_NUMBER );
state = SCE_CMAKE_DEFAULT;
if ( cCurrChar == '"' ) {
state = SCE_CMAKE_STRINGDQ;
bVarInString = false;
bClassicVarInString = false;
}
else if ( cCurrChar == '`' ) {
state = SCE_CMAKE_STRINGLQ;
bVarInString = false;
bClassicVarInString = false;
}
else if ( cCurrChar == '\'' ) {
state = SCE_CMAKE_STRINGRQ;
bVarInString = false;
bClassicVarInString = false;
}
else if ( cCurrChar == '#' ) {
state = SCE_CMAKE_COMMENT;
}
}
break;
}
if ( state == SCE_CMAKE_STRINGDQ || state == SCE_CMAKE_STRINGLQ || state == SCE_CMAKE_STRINGRQ ) {
bool bIngoreNextDollarSign = false;
if ( bVarInString && cCurrChar == '$' ) {
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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