+// Scintilla source code edit control
+// @file LexPowerPro.cxx
+// PowerPro utility, written by Bruce Switzer, is available from http://powerpro.webeddie.com
+// PowerPro lexer is written by Christopher Bean (cbean@cb-software.net)
+//
+// Lexer code heavily borrowed from:
+// LexAU3.cxx by Jos van der Zande
+// LexCPP.cxx by Neil Hodgson
+// LexVB.cxx by Neil Hodgson
+//
+// Changes:
+// 2008-10-25 - Initial release
+// 2008-10-26 - Changed how <name> is hilighted in 'function <name>' so that
+// local isFunction = "" and local functions = "" don't get falsely highlighted
+// 2008-12-14 - Added bounds checking for szKeyword and szDo
+// - Replaced SetOfCharacters with CharacterSet
+// - Made sure that CharacterSet::Contains is passed only positive values
+// - Made sure that the return value of Accessor::SafeGetCharAt is positive before
+// passsing to functions that require positive values like isspacechar()
+// - Removed unused visibleChars processing from ColourisePowerProDoc()
+// - Fixed bug with folding logic where line continuations didn't end where
+// they were supposed to
+// - Moved all helper functions to the top of the file
+//
+// Copyright 1998-2005 by Neil Hodgson <neilh@scintilla.org>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "Platform.h"
+#include "PropSet.h"
+#include "Accessor.h"
+#include "StyleContext.h"
+#include "KeyWords.h"
+#include "Scintilla.h"
+#include "SciLexer.h"
+#include "CharacterSet.h"
+
+#ifdef SCI_NAMESPACE
+using namespace Scintilla;
+#endif
+
+static inline bool IsStreamCommentStyle(int style) {
+ return style == SCE_POWERPRO_COMMENTBLOCK;
+}
+
+static bool IsContinuationLine(unsigned int szLine, Accessor &styler)
+{
+ int nsPos = styler.LineStart(szLine);
+ int nePos = styler.LineStart(szLine + 1) - 2;
+ while (nsPos < nePos)
+ {
+ int stylech = styler.StyleAt(nsPos);
+ if (!(stylech == SCE_POWERPRO_COMMENTBLOCK)) {
+ char ch = styler.SafeGetCharAt(nePos);
+ char chPrev = styler.SafeGetCharAt(nePos-1);
+ char chPrevPrev = styler.SafeGetCharAt(nePos-2);
+ if (ch > 0 && chPrev > 0 && chPrevPrev > 0 && !isspacechar(ch) && !isspacechar(chPrev) && !isspacechar(chPrevPrev) ) {
+ if (chPrevPrev == ';' && chPrev == ';' && ch == '+')
+ return true;
+ else
+ return false;
+ }
+ }
+ nePos--; // skip to next char
+ }
+ return false;
+}
+
+// Routine to find first none space on the current line and return its Style
+// needed for comment lines not starting on pos 1
+static int GetStyleFirstWord(unsigned int szLine, Accessor &styler)
+{
+ int nsPos = styler.LineStart(szLine);
+ int nePos = styler.LineStart(szLine+1) - 1;
+ char ch = styler.SafeGetCharAt(nsPos);
+
+ while (ch > 0 && isspacechar(ch) && nsPos < nePos)
+ {
+ nsPos++; // skip to next char
+ ch = styler.SafeGetCharAt(nsPos);
+
+ }
+ return styler.StyleAt(nsPos);
+}
+
+//returns true if there is a function to highlight
+//used to highlight <name> in 'function <name>'
+static bool HasFunction(Accessor &styler, unsigned int currentPos) {
+
+ //check for presence of 'function '
+ return (styler.SafeGetCharAt(currentPos) == ' '
+ && tolower(styler.SafeGetCharAt(currentPos-1)) == 'n'
+ && tolower(styler.SafeGetCharAt(currentPos-2)) == 'o'
+ && tolower(styler.SafeGetCharAt(currentPos-3)) == 'i'
+ && tolower(styler.SafeGetCharAt(currentPos-4)) == 't'
+ && tolower(styler.SafeGetCharAt(currentPos-5)) == 'c'
+ && tolower(styler.SafeGetCharAt(currentPos-6)) == 'n'
+ && tolower(styler.SafeGetCharAt(currentPos-7)) == 'u'
+ && tolower(styler.SafeGetCharAt(currentPos-8)) == 'f'
+ //only allow 'function ' to appear at the beginning of a line
+ && (styler.SafeGetCharAt(currentPos-9) == '\n'
+ || styler.SafeGetCharAt(currentPos-9) == '\r'
+ || (styler.SafeGetCharAt(currentPos -9, '\0')) == '\0') //is the first line
+ );
+}
+
+static void ColourisePowerProDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+ Accessor &styler, bool caseSensitive) {
+
+ WordList &keywords = *keywordlists[0];
+ WordList &keywords2 = *keywordlists[1];
+ WordList &keywords3 = *keywordlists[2];
+ WordList &keywords4 = *keywordlists[3];
+
+ //define the character sets
+ CharacterSet setWordStart(CharacterSet::setAlpha, "_@", 0x80, true);
+ CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
+
+ StyleContext sc(startPos, length, initStyle, styler);
+ char s_save[100]; //for last line highlighting
+
+ for (; sc.More(); sc.Forward()) {
+
+ // **********************************************
+ // save the total current word for eof processing
+ char s[100];
+ sc.GetCurrentLowered(s, sizeof(s));
+
+ if ((sc.ch > 0) && setWord.Contains(sc.ch))
+ {
+ strcpy(s_save,s);
+ int tp = strlen(s_save);
+ if (tp < 99) {
+ s_save[tp] = static_cast<char>(tolower(sc.ch));
+ s_save[tp+1] = '\0';
+ }
+ }
+ // **********************************************
+ //
+
+ if (sc.atLineStart) {
+ if (sc.state == SCE_POWERPRO_DOUBLEQUOTEDSTRING) {
+ // Prevent SCE_POWERPRO_STRINGEOL from leaking back to previous line which
+ // ends with a line continuation by locking in the state upto this position.
+ sc.SetState(SCE_POWERPRO_DOUBLEQUOTEDSTRING);
+ }
+ }
+
+ // Determine if the current state should terminate.
+ switch (sc.state) {
+ case SCE_POWERPRO_OPERATOR:
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ break;
+
+ case SCE_POWERPRO_NUMBER:
+
+ if (!IsADigit(sc.ch))
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+
+ break;
+
+ case SCE_POWERPRO_IDENTIFIER:
+ //if ((sc.ch > 0) && !setWord.Contains(sc.ch) || (sc.ch == '.')) { // use this line if don't want to match keywords with . in them. ie: win.debug will match both win and debug so win debug will also be colorized
+ if ((sc.ch > 0) && !setWord.Contains(sc.ch)){ // || (sc.ch == '.')) { // use this line if you want to match keywords with a . ie: win.debug will only match win.debug neither win nor debug will be colorized separately
+ char s[1000];
+ if (caseSensitive) {
+ sc.GetCurrent(s, sizeof(s));
+ } else {
+ sc.GetCurrentLowered(s, sizeof(s));
+ }
+ if (keywords.InList(s)) {
+ sc.ChangeState(SCE_POWERPRO_WORD);
+ } else if (keywords2.InList(s)) {
+ sc.ChangeState(SCE_POWERPRO_WORD2);
+ } else if (keywords3.InList(s)) {
+ sc.ChangeState(SCE_POWERPRO_WORD3);
+ } else if (keywords4.InList(s)) {
+ sc.ChangeState(SCE_POWERPRO_WORD4);
+ }
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ break;
+
+ case SCE_POWERPRO_LINECONTINUE:
+ if (sc.atLineStart) {
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ } else if (sc.Match('/', '*') || sc.Match('/', '/')) {
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ break;
+
+ case SCE_POWERPRO_COMMENTBLOCK:
+ if (sc.Match('*', '/')) {
+ sc.Forward();
+ sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
+ }
+ break;
+
+ case SCE_POWERPRO_COMMENTLINE:
+ if (sc.atLineStart) {
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ break;
+
+ case SCE_POWERPRO_DOUBLEQUOTEDSTRING:
+ if (sc.atLineEnd) {
+ sc.ChangeState(SCE_POWERPRO_STRINGEOL);
+ } else if (sc.ch == '\\') {
+ if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+ sc.Forward();
+ }
+ } else if (sc.ch == '\"') {
+ sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
+ }
+ break;
+
+ case SCE_POWERPRO_SINGLEQUOTEDSTRING:
+ if (sc.atLineEnd) {
+ sc.ChangeState(SCE_POWERPRO_STRINGEOL);
+ } else if (sc.ch == '\\') {
+ if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+ sc.Forward();
+ }
+ } else if (sc.ch == '\'') {
+ sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
+ }
+ break;
+
+ case SCE_POWERPRO_STRINGEOL:
+ if (sc.atLineStart) {
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ break;
+
+ case SCE_POWERPRO_VERBATIM:
+ if (sc.ch == '\"') {
+ if (sc.chNext == '\"') {
+ sc.Forward();
+ } else {
+ sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
+ }
+ }
+ break;
+
+ case SCE_POWERPRO_ALTQUOTE:
+ if (sc.ch == '#') {
+ if (sc.chNext == '#') {
+ sc.Forward();
+ } else {
+ sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
+ }
+ }
+ break;
+
+ case SCE_POWERPRO_FUNCTION:
+ if (sc.ch == '\r' || sc.ch == '\n' || sc.ch == ' ' || sc.ch == '(') {
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ break;
+ }
+
+ // Determine if a new state should be entered.
+ if (sc.state == SCE_POWERPRO_DEFAULT) {
+ if (sc.Match('?', '\"')) {
+ sc.SetState(SCE_POWERPRO_VERBATIM);
+ sc.Forward();
+ } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
+ sc.SetState(SCE_POWERPRO_NUMBER);
+ }else if (sc.Match('?','#')) {
+ if (sc.ch == '?' && sc.chNext == '#') {
+ sc.SetState(SCE_POWERPRO_ALTQUOTE);
+ sc.Forward();
+ }
+ } else if (HasFunction(styler, sc.currentPos)) { //highlight <name> in 'function <name>'
+ sc.SetState(SCE_POWERPRO_FUNCTION);
+ } else if (sc.ch == '@' && sc.atLineStart) { //alternate function definition [label]
+ sc.SetState(SCE_POWERPRO_FUNCTION);
+ } else if ((sc.ch > 0) && (setWordStart.Contains(sc.ch) || (sc.ch == '?'))) {
+ sc.SetState(SCE_POWERPRO_IDENTIFIER);
+ } else if (sc.Match(";;+")) {
+ sc.SetState(SCE_POWERPRO_LINECONTINUE);
+ } else if (sc.Match('/', '*')) {
+ sc.SetState(SCE_POWERPRO_COMMENTBLOCK);
+ sc.Forward(); // Eat the * so it isn't used for the end of the comment
+ } else if (sc.Match('/', '/')) {
+ sc.SetState(SCE_POWERPRO_COMMENTLINE);
+ } else if (sc.atLineStart && sc.ch == ';') { //legacy comment that can only appear at the beginning of a line
+ sc.SetState(SCE_POWERPRO_COMMENTLINE);
+ } else if (sc.Match(";;")) {
+ sc.SetState(SCE_POWERPRO_COMMENTLINE);
+ } else if (sc.ch == '\"') {
+ sc.SetState(SCE_POWERPRO_DOUBLEQUOTEDSTRING);
+ } else if (sc.ch == '\'') {
+ sc.SetState(SCE_POWERPRO_SINGLEQUOTEDSTRING);
+ } else if (isoperator(static_cast<char>(sc.ch))) {
+ sc.SetState(SCE_POWERPRO_OPERATOR);
+ }
+ }
+ }
+
+ //*************************************
+ // Colourize the last word correctly
+ //*************************************
+ if (sc.state == SCE_POWERPRO_IDENTIFIER)
+ {
+ if (keywords.InList(s_save)) {
+ sc.ChangeState(SCE_POWERPRO_WORD);
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ else if (keywords2.InList(s_save)) {
+ sc.ChangeState(SCE_POWERPRO_WORD2);
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ else if (keywords3.InList(s_save)) {
+ sc.ChangeState(SCE_POWERPRO_WORD3);
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ else if (keywords4.InList(s_save)) {
+ sc.ChangeState(SCE_POWERPRO_WORD4);
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ else {
+ sc.SetState(SCE_POWERPRO_DEFAULT);
+ }
+ }
+ sc.Complete();
+}
+
+static void FoldPowerProDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler)
+{
+ //define the character sets
+ CharacterSet setWordStart(CharacterSet::setAlpha, "_@", 0x80, true);
+ CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
+
+ bool isFoldingAll = true; //used to tell if we're recursively folding the whole document, or just a small piece (ie: if statement or 1 function)
+ int endPos = startPos + length;
+ int lastLine = styler.GetLine(styler.Length()); //used to help fold the last line correctly
+
+ // get settings from the config files for folding comments and preprocessor lines
+ bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
+ bool foldInComment = styler.GetPropertyInt("fold.comment") == 2;
+ bool foldCompact = true;
+
+ // Backtrack to previous line in case need to fix its fold status
+ int lineCurrent = styler.GetLine(startPos);
+ if (startPos > 0) {
+ isFoldingAll = false;
+ if (lineCurrent > 0) {
+ lineCurrent--;
+ startPos = styler.LineStart(lineCurrent);
+ }
+ }
+ // vars for style of previous/current/next lines
+ int style = GetStyleFirstWord(lineCurrent,styler);
+ int stylePrev = 0;
+
+ // find the first previous line without continuation character at the end
+ while ((lineCurrent > 0 && IsContinuationLine(lineCurrent,styler)) ||
+ (lineCurrent > 1 && IsContinuationLine(lineCurrent-1,styler))) {
+ lineCurrent--;
+ startPos = styler.LineStart(lineCurrent);
+ }
+ if (lineCurrent > 0) {
+ stylePrev = GetStyleFirstWord(lineCurrent-1,styler);
+ }
+ // vars for getting first word to check for keywords
+ bool FirstWordStart = false;
+ bool FirstWordEnd = false;
+
+ const unsigned int KEYWORD_MAX = 10;
+ char szKeyword[KEYWORD_MAX]="";
+ unsigned int szKeywordlen = 0;
+
+ char szDo[3]="";
+ int szDolen = 0;
+ bool DoFoundLast = false;
+
+ // var for indentlevel
+ int levelCurrent = SC_FOLDLEVELBASE;
+ if (lineCurrent > 0) {
+ levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
+ }
+ int levelNext = levelCurrent;
+
+ int visibleChars = 0;
+ int functionCount = 0;
+
+ char chNext = styler.SafeGetCharAt(startPos);
+ char chPrev = '\0';
+ char chPrevPrev = '\0';
+ char chPrevPrevPrev = '\0';
+
+ for (int i = startPos; i < endPos; i++) {
+
+ char ch = chNext;
+ chNext = styler.SafeGetCharAt(i + 1);
+
+ if ((ch > 0) && setWord.Contains(ch)) {
+ visibleChars++;
+ }
+
+ // get the syle for the current character neede to check in comment
+ int stylech = styler.StyleAt(i);
+
+ // get first word for the line for indent check max 9 characters
+ if (FirstWordStart && (!(FirstWordEnd))) {
+ if ((ch > 0) && !setWord.Contains(ch)) {
+ FirstWordEnd = true;
+ }
+ else if (szKeywordlen < KEYWORD_MAX - 1) {
+ szKeyword[szKeywordlen++] = static_cast<char>(tolower(ch));
+ szKeyword[szKeywordlen] = '\0';
+ }
+ }
+
+ // start the capture of the first word
+ if (!(FirstWordStart)) {
+ if ((ch > 0) && (setWord.Contains(ch) || setWordStart.Contains(ch) || ch == ';' || ch == '/')) {
+ FirstWordStart = true;
+ if (szKeywordlen < KEYWORD_MAX - 1) {
+ szKeyword[szKeywordlen++] = static_cast<char>(tolower(ch));
+ szKeyword[szKeywordlen] = '\0';
+ }
+ }
+ }
+ // only process this logic when not in comment section
+ if (stylech != SCE_POWERPRO_COMMENTLINE) {
+ if (DoFoundLast) {
+ if (DoFoundLast && (ch > 0) && setWord.Contains(ch)) {
+ DoFoundLast = false;
+ }
+ }
+ // find out if the word "do" is the last on a "if" line
+ if (FirstWordEnd && strcmp(szKeyword,"if") == 0) {
+ if (szDolen == 2) {
+ szDo[0] = szDo[1];
+ szDo[1] = static_cast<char>(tolower(ch));
+ szDo[2] = '\0';
+ if (strcmp(szDo,"do") == 0 ) {
+ DoFoundLast = true;
+ }
+ }
+ else if (szDolen < 2) {
+ szDo[szDolen++] = static_cast<char>(tolower(ch));
+ szDo[szDolen] = '\0';
+ }
+ }
+ }
+
+ // End of Line found so process the information
+ if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos)) {
+
+ // **************************
+ // Folding logic for Keywords
+ // **************************
+
+ // if a keyword is found on the current line and the line doesn't end with ;;+ (continuation)
+ // and we are not inside a commentblock.
+ if (szKeywordlen > 0 &&
+ (!(chPrev == '+' && chPrevPrev == ';' && chPrevPrevPrev ==';')) &&
+ ((!(IsStreamCommentStyle(style)) || foldInComment)) ) {
+
+ // only fold "if" last keyword is "then" (else its a one line if)
+ if (strcmp(szKeyword,"if") == 0 && DoFoundLast) {
+ levelNext++;
+ }
+ // create new fold for these words
+ if (strcmp(szKeyword,"for") == 0) {
+ levelNext++;
+ }
+
+ //handle folding for functions/labels
+ //Note: Functions and labels don't have an explicit end like [end function]
+ // 1. functions/labels end at the start of another function
+ // 2. functions/labels end at the end of the file
+ if ((strcmp(szKeyword,"function") == 0) || (szKeywordlen > 0 && szKeyword[0] == '@')) {
+ if (isFoldingAll) { //if we're folding the whole document (recursivly by lua script)
+
+ if (functionCount > 0) {
+ levelCurrent--;
+ } else {
+ levelNext++;
+ }
+ functionCount++;
+
+ } else { //if just folding a small piece (by clicking on the minus sign next to the word)
+ levelCurrent--;
+ }
+ }
+
+ // end the fold for these words before the current line
+ if (strcmp(szKeyword,"endif") == 0 || strcmp(szKeyword,"endfor") == 0) {
+ levelNext--;
+ levelCurrent--;
+ }
+ // end the fold for these words before the current line and Start new fold
+ if (strcmp(szKeyword,"else") == 0 || strcmp(szKeyword,"elseif") == 0 ) {
+ levelCurrent--;
+ }
+ }
+ // Preprocessor and Comment folding
+ int styleNext = GetStyleFirstWord(lineCurrent + 1,styler);
+
+ // *********************************
+ // Folding logic for Comment blocks
+ // *********************************
+ if (foldComment && IsStreamCommentStyle(style)) {
+ // Start of a comment block
+ if (!(stylePrev==style) && IsStreamCommentStyle(styleNext) && styleNext==style) {
+ levelNext++;
+ }
+ // fold till the last line for normal comment lines
+ else if (IsStreamCommentStyle(stylePrev)
+ && !(styleNext == SCE_POWERPRO_COMMENTLINE)
+ && stylePrev == SCE_POWERPRO_COMMENTLINE
+ && style == SCE_POWERPRO_COMMENTLINE) {
+ levelNext--;
+ }
+ // fold till the one but last line for Blockcomment lines
+ else if (IsStreamCommentStyle(stylePrev)
+ && !(styleNext == SCE_POWERPRO_COMMENTBLOCK)
+ && style == SCE_POWERPRO_COMMENTBLOCK) {
+ levelNext--;
+ levelCurrent--;
+ }
+ }
+
+ int levelUse = levelCurrent;
+ 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);
+ }
+
+ // reset values for the next line
+ lineCurrent++;
+ stylePrev = style;
+ style = styleNext;
+ levelCurrent = levelNext;
+ visibleChars = 0;
+
+ // if the last characters are ;;+ then don't reset since the line continues on the next line.
+ if (chPrev == '+' && chPrevPrev == ';' && chPrevPrevPrev == ';') {
+ //do nothing
+ } else {
+ szKeywordlen = 0;
+ szDolen = 0;
+ FirstWordStart = false;
+ FirstWordEnd = false;
+ DoFoundLast = false;
+ //blank out keyword
+ for (unsigned int i = 0; i < KEYWORD_MAX; i++) {
+ szKeyword[i] = '\0';
+ }
+ }
+ }
+
+ // save the last processed characters
+ if ((ch > 0) && !isspacechar(ch)) {
+ chPrevPrevPrev = chPrevPrev;
+ chPrevPrev = chPrev;
+ chPrev = ch;
+ visibleChars++;
+ }
+ }
+
+ //close folds on the last line - without this a 'phantom'
+ //fold can appear when an open fold is on the last line
+ //this can occur because functions and labels don't have an explicit end
+ if (lineCurrent >= lastLine) {
+ int lev = 0;
+ lev |= SC_FOLDLEVELWHITEFLAG;
+ styler.SetLevel(lineCurrent, lev);
+ }
+
+}
+
+static const char * const powerProWordLists[] = {
+ "Keyword list 1",
+ "Keyword list 2",
+ "Keyword list 3",
+ "Keyword list 4",
+ 0,
+ };
+
+static void ColourisePowerProDocWrapper(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+ Accessor &styler) {
+ ColourisePowerProDoc(startPos, length, initStyle, keywordlists, styler, false);
+}
+
+LexerModule lmPowerPro(SCLEX_POWERPRO, ColourisePowerProDocWrapper, "powerpro", FoldPowerProDoc, powerProWordLists);
projects / wxWidgets.git / commitdiff
