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Diffstat (limited to 'src/LexR.cxx')
| -rw-r--r-- | src/LexR.cxx | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/src/LexR.cxx b/src/LexR.cxx deleted file mode 100644 index cabbf5788..000000000 --- a/src/LexR.cxx +++ /dev/null @@ -1,213 +0,0 @@ -// Scintilla source code edit control -/** @file Lexr.cxx - ** Lexer for R, S, SPlus Statistics Program (Heavily derived from CPP Lexer). - ** - **/ -// Copyright 1998-2002 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 <ctype.h> -#include <stdio.h> -#include <stdarg.h> - -#include "Platform.h" - -#include "PropSet.h" -#include "Accessor.h" -#include "StyleContext.h" -#include "KeyWords.h" -#include "Scintilla.h" -#include "SciLexer.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) || ch == '_'); -} - -static inline bool IsAnOperator(const int ch) { - if (isascii(ch) && isalnum(ch)) - return false; - // '.' left out as it is used to make up numbers - if (ch == '-' || ch == '+' || ch == '!' || ch == '~' || - ch == '?' || ch == ':' || ch == '*' || ch == '/' || - ch == '^' || ch == '<' || ch == '>' || ch == '=' || - ch == '&' || ch == '|' || ch == '$' || ch == '(' || - ch == ')' || ch == '}' || ch == '{' || ch == '[' || - ch == ']') - return true; - return false; -} - -static void ColouriseRDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[], - Accessor &styler) { - - WordList &keywords = *keywordlists[0]; - WordList &keywords2 = *keywordlists[1]; - WordList &keywords3 = *keywordlists[2]; - - - // Do not leak onto next line - if (initStyle == SCE_R_INFIXEOL) - initStyle = SCE_R_DEFAULT; - - - StyleContext sc(startPos, length, initStyle, styler); - - for (; sc.More(); sc.Forward()) { - - if (sc.atLineStart && (sc.state == SCE_R_STRING)) { - // Prevent SCE_R_STRINGEOL from leaking back to previous line - sc.SetState(SCE_R_STRING); - } - - // Determine if the current state should terminate. - if (sc.state == SCE_R_OPERATOR) { - sc.SetState(SCE_R_DEFAULT); - } else if (sc.state == SCE_R_NUMBER) { - if (!IsADigit(sc.ch) && !(sc.ch == '.' && IsADigit(sc.chNext))) { - sc.SetState(SCE_R_DEFAULT); - } - } else if (sc.state == SCE_R_IDENTIFIER) { - if (!IsAWordChar(sc.ch)) { - char s[100]; - sc.GetCurrent(s, sizeof(s)); - if (keywords.InList(s)) { - sc.ChangeState(SCE_R_KWORD); - } else if (keywords2.InList(s)) { - sc.ChangeState(SCE_R_BASEKWORD); - } else if (keywords3.InList(s)) { - sc.ChangeState(SCE_R_OTHERKWORD); - } - sc.SetState(SCE_R_DEFAULT); - } - } else if (sc.state == SCE_R_COMMENT) { - if (sc.ch == '\r' || sc.ch == '\n') { - sc.SetState(SCE_R_DEFAULT); - } - } else if (sc.state == SCE_R_STRING) { - if (sc.ch == '\\') { - if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') { - sc.Forward(); - } - } else if (sc.ch == '\"') { - sc.ForwardSetState(SCE_R_DEFAULT); - } - } else if (sc.state == SCE_R_INFIX) { - if (sc.ch == '%') { - sc.ForwardSetState(SCE_R_DEFAULT); - } else if (sc.atLineEnd) { - sc.ChangeState(SCE_R_INFIXEOL); - sc.ForwardSetState(SCE_R_DEFAULT); - } - }else if (sc.state == SCE_R_STRING2) { - if (sc.ch == '\\') { - if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') { - sc.Forward(); - } - } else if (sc.ch == '\'') { - sc.ForwardSetState(SCE_R_DEFAULT); - } - } - - // Determine if a new state should be entered. - if (sc.state == SCE_R_DEFAULT) { - if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) { - sc.SetState(SCE_R_NUMBER); - } else if (IsAWordStart(sc.ch) ) { - sc.SetState(SCE_R_IDENTIFIER); - } else if (sc.Match('#')) { - sc.SetState(SCE_R_COMMENT); - } else if (sc.ch == '\"') { - sc.SetState(SCE_R_STRING); - } else if (sc.ch == '%') { - sc.SetState(SCE_R_INFIX); - } else if (sc.ch == '\'') { - sc.SetState(SCE_R_STRING2); - } else if (IsAnOperator(sc.ch)) { - sc.SetState(SCE_R_OPERATOR); - } - } - } - sc.Complete(); -} - -// Store both the current line's fold level and the next lines in the -// level store to make it easy to pick up with each increment -// and to make it possible to fiddle the current level for "} else {". -static void FoldRDoc(unsigned int startPos, int length, int, WordList *[], - Accessor &styler) { - bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0; - bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0; - unsigned int endPos = startPos + length; - int visibleChars = 0; - int lineCurrent = styler.GetLine(startPos); - int levelCurrent = SC_FOLDLEVELBASE; - if (lineCurrent > 0) - levelCurrent = styler.LevelAt(lineCurrent-1) >> 16; - int levelMinCurrent = levelCurrent; - int levelNext = levelCurrent; - char chNext = styler[startPos]; - int styleNext = styler.StyleAt(startPos); - for (unsigned int i = startPos; i < endPos; i++) { - char ch = chNext; - chNext = styler.SafeGetCharAt(i + 1); - int style = styleNext; - styleNext = styler.StyleAt(i + 1); - bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n'); - if (style == SCE_R_OPERATOR) { - if (ch == '{') { - // Measure the minimum before a '{' to allow - // folding on "} else {" - if (levelMinCurrent > levelNext) { - levelMinCurrent = levelNext; - } - levelNext++; - } else if (ch == '}') { - levelNext--; - } - } - if (atEOL) { - int levelUse = levelCurrent; - if (foldAtElse) { - levelUse = levelMinCurrent; - } - int lev = levelUse | levelNext << 16; - if (visibleChars == 0 && foldCompact) - lev |= SC_FOLDLEVELWHITEFLAG; - if (levelUse < levelNext) - lev |= SC_FOLDLEVELHEADERFLAG; - if (lev != styler.LevelAt(lineCurrent)) { - styler.SetLevel(lineCurrent, lev); - } - lineCurrent++; - levelCurrent = levelNext; - levelMinCurrent = levelCurrent; - visibleChars = 0; - } - if (!isspacechar(ch)) - visibleChars++; - } -} - - -static const char * const RWordLists[] = { - "Language Keywords", - "Base / Default package function", - "Other Package Functions", - "Unused", - "Unused", - 0, - }; - - - -LexerModule lmR(SCLEX_R, ColouriseRDoc, "r", FoldRDoc, RWordLists); |