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author | nyamatongwe <unknown> | 2010-07-13 21:16:48 +1000 |
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committer | nyamatongwe <unknown> | 2010-07-13 21:16:48 +1000 |
commit | fd7c21165bbc5200aa24ef89560a8bb40fd37255 (patch) | |
tree | b5cdec307f1b412f0527eb826a14b806b58cf006 /src/LexCOBOL.cxx | |
parent | d47313970ebf3736afffec781f2f9030fa3c8e1a (diff) | |
download | scintilla-mirror-fd7c21165bbc5200aa24ef89560a8bb40fd37255.tar.gz |
Moved lexers into lexers directory.
Diffstat (limited to 'src/LexCOBOL.cxx')
-rw-r--r-- | src/LexCOBOL.cxx | 368 |
1 files changed, 0 insertions, 368 deletions
diff --git a/src/LexCOBOL.cxx b/src/LexCOBOL.cxx deleted file mode 100644 index 05bf1d973..000000000 --- a/src/LexCOBOL.cxx +++ /dev/null @@ -1,368 +0,0 @@ -// Scintilla source code edit control -/** @file LexCOBOL.cxx - ** Lexer for COBOL - ** Based on LexPascal.cxx - ** Written by Laurent le Tynevez - ** Updated by Simon Steele <s.steele@pnotepad.org> September 2002 - ** Updated by Mathias Rauen <scite@madshi.net> May 2003 (Delphi adjustments) - ** Updated by Rod Falck, Aug 2006 Converted to COBOL - **/ - -#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 "KeyWords.h" -#include "Scintilla.h" -#include "SciLexer.h" -#include "StyleContext.h" - -#ifdef SCI_NAMESPACE -using namespace Scintilla; -#endif - -#define IN_DIVISION 0x01 -#define IN_DECLARATIVES 0x02 -#define IN_SECTION 0x04 -#define IN_PARAGRAPH 0x08 -#define IN_FLAGS 0xF -#define NOT_HEADER 0x10 - -inline bool isCOBOLoperator(char ch) - { - return isoperator(ch); - } - -inline bool isCOBOLwordchar(char ch) - { - return isascii(ch) && (isalnum(ch) || ch == '-'); - - } - -inline bool isCOBOLwordstart(char ch) - { - return isascii(ch) && isalnum(ch); - } - -static int CountBits(int nBits) - { - int count = 0; - for (int i = 0; i < 32; ++i) - { - count += nBits & 1; - nBits >>= 1; - } - return count; - } - -static void getRange(unsigned int start, - unsigned int end, - Accessor &styler, - char *s, - unsigned int len) { - unsigned int i = 0; - while ((i < end - start + 1) && (i < len-1)) { - s[i] = static_cast<char>(tolower(styler[start + i])); - i++; - } - s[i] = '\0'; -} - -static void ColourTo(Accessor &styler, unsigned int end, unsigned int attr) { - styler.ColourTo(end, attr); -} - - -static int classifyWordCOBOL(unsigned int start, unsigned int end, /*WordList &keywords*/WordList *keywordlists[], Accessor &styler, int nContainment, bool *bAarea) { - int ret = 0; - - WordList& a_keywords = *keywordlists[0]; - WordList& b_keywords = *keywordlists[1]; - WordList& c_keywords = *keywordlists[2]; - - char s[100]; - getRange(start, end, styler, s, sizeof(s)); - - char chAttr = SCE_C_IDENTIFIER; - if (isdigit(s[0]) || (s[0] == '.') || (s[0] == 'v')) { - chAttr = SCE_C_NUMBER; - char *p = s + 1; - while (*p) { - if ((!isdigit(*p) && (*p) != 'v') && isCOBOLwordchar(*p)) { - chAttr = SCE_C_IDENTIFIER; - break; - } - ++p; - } - } - else { - if (a_keywords.InList(s)) { - chAttr = SCE_C_WORD; - } - else if (b_keywords.InList(s)) { - chAttr = SCE_C_WORD2; - } - else if (c_keywords.InList(s)) { - chAttr = SCE_C_UUID; - } - } - if (*bAarea) { - if (strcmp(s, "division") == 0) { - ret = IN_DIVISION; - // we've determined the containment, anything else is just ignored for those purposes - *bAarea = false; - } else if (strcmp(s, "declaratives") == 0) { - ret = IN_DIVISION | IN_DECLARATIVES; - if (nContainment & IN_DECLARATIVES) - ret |= NOT_HEADER | IN_SECTION; - // we've determined the containment, anything else is just ignored for those purposes - *bAarea = false; - } else if (strcmp(s, "section") == 0) { - ret = (nContainment &~ IN_PARAGRAPH) | IN_SECTION; - // we've determined the containment, anything else is just ignored for those purposes - *bAarea = false; - } else if (strcmp(s, "end") == 0 && (nContainment & IN_DECLARATIVES)) { - ret = IN_DIVISION | IN_DECLARATIVES | IN_SECTION | NOT_HEADER; - } else { - ret = nContainment | IN_PARAGRAPH; - } - } - ColourTo(styler, end, chAttr); - return ret; -} - -static void ColouriseCOBOLDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[], - Accessor &styler) { - - styler.StartAt(startPos); - - int state = initStyle; - if (state == SCE_C_CHARACTER) // Does not leak onto next line - state = SCE_C_DEFAULT; - char chPrev = ' '; - char chNext = styler[startPos]; - unsigned int lengthDoc = startPos + length; - - int nContainment; - - int currentLine = styler.GetLine(startPos); - if (currentLine > 0) { - styler.SetLineState(currentLine, styler.GetLineState(currentLine-1)); - nContainment = styler.GetLineState(currentLine); - nContainment &= ~NOT_HEADER; - } else { - styler.SetLineState(currentLine, 0); - nContainment = 0; - } - - styler.StartSegment(startPos); - bool bNewLine = true; - bool bAarea = !isspacechar(chNext); - int column = 0; - for (unsigned int i = startPos; i < lengthDoc; i++) { - char ch = chNext; - - chNext = styler.SafeGetCharAt(i + 1); - - ++column; - - if (bNewLine) { - column = 0; - } - if (column <= 1 && !bAarea) { - bAarea = !isspacechar(ch); - } - bool bSetNewLine = false; - if ((ch == '\r' && chNext != '\n') || (ch == '\n')) { - // Trigger on CR only (Mac style) or either on LF from CR+LF (Dos/Win) or on LF alone (Unix) - // Avoid triggering two times on Dos/Win - // End of line - if (state == SCE_C_CHARACTER) { - ColourTo(styler, i, state); - state = SCE_C_DEFAULT; - } - styler.SetLineState(currentLine, nContainment); - currentLine++; - bSetNewLine = true; - if (nContainment & NOT_HEADER) - nContainment &= ~(NOT_HEADER | IN_DECLARATIVES | IN_SECTION); - } - - if (styler.IsLeadByte(ch)) { - chNext = styler.SafeGetCharAt(i + 2); - chPrev = ' '; - i += 1; - continue; - } - - if (state == SCE_C_DEFAULT) { - if (isCOBOLwordstart(ch) || (ch == '$' && isascii(chNext) && isalpha(chNext))) { - ColourTo(styler, i-1, state); - state = SCE_C_IDENTIFIER; - } else if (column == 0 && ch == '*' && chNext != '*') { - ColourTo(styler, i-1, state); - state = SCE_C_COMMENTLINE; - } else if (column == 0 && ch == '/' && chNext != '*') { - ColourTo(styler, i-1, state); - state = SCE_C_COMMENTLINE; - } else if (column == 0 && ch == '*' && chNext == '*') { - ColourTo(styler, i-1, state); - state = SCE_C_COMMENTDOC; - } else if (column == 0 && ch == '/' && chNext == '*') { - ColourTo(styler, i-1, state); - state = SCE_C_COMMENTDOC; - } else if (ch == '"') { - ColourTo(styler, i-1, state); - state = SCE_C_STRING; - } else if (ch == '\'') { - ColourTo(styler, i-1, state); - state = SCE_C_CHARACTER; - } else if (ch == '?' && column == 0) { - ColourTo(styler, i-1, state); - state = SCE_C_PREPROCESSOR; - } else if (isCOBOLoperator(ch)) { - ColourTo(styler, i-1, state); - ColourTo(styler, i, SCE_C_OPERATOR); - } - } else if (state == SCE_C_IDENTIFIER) { - if (!isCOBOLwordchar(ch)) { - int lStateChange = classifyWordCOBOL(styler.GetStartSegment(), i - 1, keywordlists, styler, nContainment, &bAarea); - - if(lStateChange != 0) { - styler.SetLineState(currentLine, lStateChange); - nContainment = lStateChange; - } - - state = SCE_C_DEFAULT; - chNext = styler.SafeGetCharAt(i + 1); - if (ch == '"') { - state = SCE_C_STRING; - } else if (ch == '\'') { - state = SCE_C_CHARACTER; - } else if (isCOBOLoperator(ch)) { - ColourTo(styler, i, SCE_C_OPERATOR); - } - } - } else { - if (state == SCE_C_PREPROCESSOR) { - if ((ch == '\r' || ch == '\n') && !(chPrev == '\\' || chPrev == '\r')) { - ColourTo(styler, i-1, state); - state = SCE_C_DEFAULT; - } - } else if (state == SCE_C_COMMENT) { - if (ch == '\r' || ch == '\n') { - ColourTo(styler, i, state); - state = SCE_C_DEFAULT; - } - } else if (state == SCE_C_COMMENTDOC) { - if (ch == '\r' || ch == '\n') { - if (((i > styler.GetStartSegment() + 2) || ( - (initStyle == SCE_C_COMMENTDOC) && - (styler.GetStartSegment() == static_cast<unsigned int>(startPos))))) { - ColourTo(styler, i, state); - state = SCE_C_DEFAULT; - } - } - } else if (state == SCE_C_COMMENTLINE) { - if (ch == '\r' || ch == '\n') { - ColourTo(styler, i-1, state); - state = SCE_C_DEFAULT; - } - } else if (state == SCE_C_STRING) { - if (ch == '"') { - ColourTo(styler, i, state); - state = SCE_C_DEFAULT; - } - } else if (state == SCE_C_CHARACTER) { - if (ch == '\'') { - ColourTo(styler, i, state); - state = SCE_C_DEFAULT; - } - } - } - chPrev = ch; - bNewLine = bSetNewLine; - if (bNewLine) - { - bAarea = false; - } - } - ColourTo(styler, lengthDoc - 1, state); -} - -static void FoldCOBOLDoc(unsigned int startPos, int length, int, WordList *[], - Accessor &styler) { - bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0; - unsigned int endPos = startPos + length; - int visibleChars = 0; - int lineCurrent = styler.GetLine(startPos); - int levelPrev = lineCurrent > 0 ? styler.LevelAt(lineCurrent - 1) & SC_FOLDLEVELNUMBERMASK : 0xFFF; - char chNext = styler[startPos]; - - bool bNewLine = true; - bool bAarea = !isspacechar(chNext); - int column = 0; - bool bComment = false; - for (unsigned int i = startPos; i < endPos; i++) { - char ch = chNext; - chNext = styler.SafeGetCharAt(i + 1); - ++column; - - if (bNewLine) { - column = 0; - bComment = (ch == '*' || ch == '/' || ch == '?'); - } - if (column <= 1 && !bAarea) { - bAarea = !isspacechar(ch); - } - bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n'); - if (atEOL) { - int nContainment = styler.GetLineState(lineCurrent); - int lev = CountBits(nContainment & IN_FLAGS) | SC_FOLDLEVELBASE; - if (bAarea && !bComment) - --lev; - if (visibleChars == 0 && foldCompact) - lev |= SC_FOLDLEVELWHITEFLAG; - if ((bAarea) && (visibleChars > 0) && !(nContainment & NOT_HEADER) && !bComment) - lev |= SC_FOLDLEVELHEADERFLAG; - if (lev != styler.LevelAt(lineCurrent)) { - styler.SetLevel(lineCurrent, lev); - } - if ((lev & SC_FOLDLEVELNUMBERMASK) <= (levelPrev & SC_FOLDLEVELNUMBERMASK)) { - // this level is at the same level or less than the previous line - // therefore these is nothing for the previous header to collapse, so remove the header - styler.SetLevel(lineCurrent - 1, levelPrev & ~SC_FOLDLEVELHEADERFLAG); - } - levelPrev = lev; - visibleChars = 0; - bAarea = false; - bNewLine = true; - lineCurrent++; - } else { - bNewLine = false; - } - - - 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 COBOLWordListDesc[] = { - "A Keywords", - "B Keywords", - "Extended Keywords", - 0 -}; - -LexerModule lmCOBOL(SCLEX_COBOL, ColouriseCOBOLDoc, "COBOL", FoldCOBOLDoc, COBOLWordListDesc); |