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Diffstat (limited to 'src/LexPOV.cxx')
| -rw-r--r-- | src/LexPOV.cxx | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/src/LexPOV.cxx b/src/LexPOV.cxx deleted file mode 100644 index b845b2d47..000000000 --- a/src/LexPOV.cxx +++ /dev/null @@ -1,316 +0,0 @@ -// Scintilla source code edit control -/** @file LexPOV.cxx - ** Lexer for POV-Ray SDL (Persistance of Vision Raytracer, Scene Description Language). - ** Written by Philippe Lhoste but this is mostly a derivative of LexCPP... - **/ -// Copyright 1998-2005 by Neil Hodgson <neilh@scintilla.org> -// The License.txt file describes the conditions under which this software may be distributed. - -// Some points that distinguish from a simple C lexer: -// Identifiers start only by a character. -// No line continuation character. -// Strings are limited to 256 characters. -// Directives are similar to preprocessor commands, -// but we match directive keywords and colorize incorrect ones. -// Block comments can be nested (code stolen from my code in LexLua). - -#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(int ch) { - return ch < 0x80 && (isalnum(ch) || ch == '_'); -} - -static inline bool IsAWordStart(int ch) { - return ch < 0x80 && isalpha(ch); -} - -static inline bool IsANumberChar(int ch) { - // Not exactly following number definition (several dots are seen as OK, etc.) - // but probably enough in most cases. - return (ch < 0x80) && - (isdigit(ch) || toupper(ch) == 'E' || - ch == '.' || ch == '-' || ch == '+'); -} - -static void ColourisePovDoc( - unsigned int startPos, - int length, - int initStyle, - WordList *keywordlists[], - Accessor &styler) { - - WordList &keywords1 = *keywordlists[0]; - WordList &keywords2 = *keywordlists[1]; - WordList &keywords3 = *keywordlists[2]; - WordList &keywords4 = *keywordlists[3]; - WordList &keywords5 = *keywordlists[4]; - WordList &keywords6 = *keywordlists[5]; - WordList &keywords7 = *keywordlists[6]; - WordList &keywords8 = *keywordlists[7]; - - int currentLine = styler.GetLine(startPos); - // Initialize the block comment /* */ nesting level, if we are inside such a comment. - int blockCommentLevel = 0; - if (initStyle == SCE_POV_COMMENT) { - blockCommentLevel = styler.GetLineState(currentLine - 1); - } - - // Do not leak onto next line - if (initStyle == SCE_POV_STRINGEOL || initStyle == SCE_POV_COMMENTLINE) { - initStyle = SCE_POV_DEFAULT; - } - - short stringLen = 0; - - StyleContext sc(startPos, length, initStyle, styler); - - for (; sc.More(); sc.Forward()) { - if (sc.atLineEnd) { - // Update the line state, so it can be seen by next line - currentLine = styler.GetLine(sc.currentPos); - if (sc.state == SCE_POV_COMMENT) { - // Inside a block comment, we set the line state - styler.SetLineState(currentLine, blockCommentLevel); - } else { - // Reset the line state - styler.SetLineState(currentLine, 0); - } - } - - if (sc.atLineStart && (sc.state == SCE_POV_STRING)) { - // Prevent SCE_POV_STRINGEOL from leaking back to previous line - sc.SetState(SCE_POV_STRING); - } - - // Determine if the current state should terminate. - if (sc.state == SCE_POV_OPERATOR) { - sc.SetState(SCE_POV_DEFAULT); - } else if (sc.state == SCE_POV_NUMBER) { - // We stop the number definition on non-numerical non-dot non-eE non-sign char - if (!IsANumberChar(sc.ch)) { - sc.SetState(SCE_POV_DEFAULT); - } - } else if (sc.state == SCE_POV_IDENTIFIER) { - if (!IsAWordChar(sc.ch)) { - char s[100]; - sc.GetCurrent(s, sizeof(s)); - if (keywords2.InList(s)) { - sc.ChangeState(SCE_POV_WORD2); - } else if (keywords3.InList(s)) { - sc.ChangeState(SCE_POV_WORD3); - } else if (keywords4.InList(s)) { - sc.ChangeState(SCE_POV_WORD4); - } else if (keywords5.InList(s)) { - sc.ChangeState(SCE_POV_WORD5); - } else if (keywords6.InList(s)) { - sc.ChangeState(SCE_POV_WORD6); - } else if (keywords7.InList(s)) { - sc.ChangeState(SCE_POV_WORD7); - } else if (keywords8.InList(s)) { - sc.ChangeState(SCE_POV_WORD8); - } - sc.SetState(SCE_POV_DEFAULT); - } - } else if (sc.state == SCE_POV_DIRECTIVE) { - if (!IsAWordChar(sc.ch)) { - char s[100]; - char *p; - sc.GetCurrent(s, sizeof(s)); - p = s; - // Skip # and whitespace between # and directive word - do { - p++; - } while ((*p == ' ' || *p == '\t') && *p != '\0'); - if (!keywords1.InList(p)) { - sc.ChangeState(SCE_POV_BADDIRECTIVE); - } - sc.SetState(SCE_POV_DEFAULT); - } - } else if (sc.state == SCE_POV_COMMENT) { - if (sc.Match('/', '*')) { - blockCommentLevel++; - sc.Forward(); - } else if (sc.Match('*', '/') && blockCommentLevel > 0) { - blockCommentLevel--; - sc.Forward(); - if (blockCommentLevel == 0) { - sc.ForwardSetState(SCE_POV_DEFAULT); - } - } - } else if (sc.state == SCE_POV_COMMENTLINE) { - if (sc.atLineEnd) { - sc.ForwardSetState(SCE_POV_DEFAULT); - } - } else if (sc.state == SCE_POV_STRING) { - if (sc.ch == '\\') { - stringLen++; - if (strchr("abfnrtuv0'\"", sc.chNext)) { - // Compound characters are counted as one. - // Note: for Unicode chars \u, we shouldn't count the next 4 digits... - sc.Forward(); - } - } else if (sc.ch == '\"') { - sc.ForwardSetState(SCE_POV_DEFAULT); - } else if (sc.atLineEnd) { - sc.ChangeState(SCE_POV_STRINGEOL); - sc.ForwardSetState(SCE_POV_DEFAULT); - } else { - stringLen++; - } - if (stringLen > 256) { - // Strings are limited to 256 chars - sc.SetState(SCE_POV_STRINGEOL); - } - } else if (sc.state == SCE_POV_STRINGEOL) { - if (sc.ch == '\\') { - if (sc.chNext == '\"' || sc.chNext == '\\') { - sc.Forward(); - } - } else if (sc.ch == '\"') { - sc.ForwardSetState(SCE_C_DEFAULT); - } else if (sc.atLineEnd) { - sc.ForwardSetState(SCE_POV_DEFAULT); - } - } - - // Determine if a new state should be entered. - if (sc.state == SCE_POV_DEFAULT) { - if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) { - sc.SetState(SCE_POV_NUMBER); - } else if (IsAWordStart(sc.ch)) { - sc.SetState(SCE_POV_IDENTIFIER); - } else if (sc.Match('/', '*')) { - blockCommentLevel = 1; - sc.SetState(SCE_POV_COMMENT); - sc.Forward(); // Eat the * so it isn't used for the end of the comment - } else if (sc.Match('/', '/')) { - sc.SetState(SCE_POV_COMMENTLINE); - } else if (sc.ch == '\"') { - sc.SetState(SCE_POV_STRING); - stringLen = 0; - } else if (sc.ch == '#') { - sc.SetState(SCE_POV_DIRECTIVE); - // Skip whitespace between # and directive word - do { - sc.Forward(); - } while ((sc.ch == ' ' || sc.ch == '\t') && sc.More()); - if (sc.atLineEnd) { - sc.SetState(SCE_POV_DEFAULT); - } - } else if (isoperator(static_cast<char>(sc.ch))) { - sc.SetState(SCE_POV_OPERATOR); - } - } - } - sc.Complete(); -} - -static void FoldPovDoc( - unsigned int startPos, - int length, - int initStyle, - WordList *[], - Accessor &styler) { - - bool foldComment = styler.GetPropertyInt("fold.comment") != 0; - bool foldDirective = styler.GetPropertyInt("fold.directive") != 0; - bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0; - unsigned int endPos = startPos + length; - int visibleChars = 0; - int lineCurrent = styler.GetLine(startPos); - int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK; - int levelCurrent = levelPrev; - char chNext = styler[startPos]; - int styleNext = styler.StyleAt(startPos); - int style = initStyle; - for (unsigned int i = startPos; i < endPos; i++) { - char ch = chNext; - chNext = styler.SafeGetCharAt(i + 1); - int stylePrev = style; - style = styleNext; - styleNext = styler.StyleAt(i + 1); - bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n'); - if (foldComment && (style == SCE_POV_COMMENT)) { - if (stylePrev != SCE_POV_COMMENT) { - levelCurrent++; - } else if ((styleNext != SCE_POV_COMMENT) && !atEOL) { - // Comments don't end at end of line and the next character may be unstyled. - levelCurrent--; - } - } - if (foldComment && (style == SCE_POV_COMMENTLINE)) { - if ((ch == '/') && (chNext == '/')) { - char chNext2 = styler.SafeGetCharAt(i + 2); - if (chNext2 == '{') { - levelCurrent++; - } else if (chNext2 == '}') { - levelCurrent--; - } - } - } - if (foldDirective && (style == SCE_POV_DIRECTIVE)) { - if (ch == '#') { - unsigned int j=i+1; - while ((j<endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) { - j++; - } - } - } - if (style == SCE_POV_OPERATOR) { - if (ch == '{') { - levelCurrent++; - } else if (ch == '}') { - levelCurrent--; - } - } - if (atEOL) { - int lev = levelPrev; - if (visibleChars == 0 && foldCompact) - lev |= SC_FOLDLEVELWHITEFLAG; - if ((levelCurrent > levelPrev) && (visibleChars > 0)) - lev |= SC_FOLDLEVELHEADERFLAG; - if (lev != styler.LevelAt(lineCurrent)) { - styler.SetLevel(lineCurrent, lev); - } - lineCurrent++; - levelPrev = levelCurrent; - visibleChars = 0; - } - if (!isspacechar(ch)) - visibleChars++; - } - // Fill in the real level of the next line, keeping the current flags as they will be filled in later - int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK; - styler.SetLevel(lineCurrent, levelPrev | flagsNext); -} - -static const char * const povWordLists[] = { - "Language directives", - "Objects & CSG & Appearance", - "Types & Modifiers & Items", - "Predefined Identifiers", - "Predefined Functions", - "User defined 1", - "User defined 2", - "User defined 3", - 0, -}; - -LexerModule lmPOV(SCLEX_POV, ColourisePovDoc, "pov", FoldPovDoc, povWordLists); |