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