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632 lines
20 KiB
632 lines
20 KiB
// Scintilla source code edit control
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// @file LexPowerPro.cxx
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// PowerPro utility, written by Bruce Switzer, is available from http://powerpro.webeddie.com
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// PowerPro lexer is written by Christopher Bean (cbean@cb-software.net)
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//
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// Lexer code heavily borrowed from:
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// LexAU3.cxx by Jos van der Zande
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// LexCPP.cxx by Neil Hodgson
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// LexVB.cxx by Neil Hodgson
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//
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// Changes:
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// 2008-10-25 - Initial release
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// 2008-10-26 - Changed how <name> is hilighted in 'function <name>' so that
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// local isFunction = "" and local functions = "" don't get falsely highlighted
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// 2008-12-14 - Added bounds checking for szFirstWord and szDo
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// - Replaced SetOfCharacters with CharacterSet
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// - Made sure that CharacterSet::Contains is passed only positive values
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// - Made sure that the return value of Accessor::SafeGetCharAt is positive before
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// passing to functions that require positive values like isspacechar()
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// - Removed unused visibleChars processing from ColourisePowerProDoc()
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// - Fixed bug with folding logic where line continuations didn't end where
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// they were supposed to
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// - Moved all helper functions to the top of the file
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// 2010-06-03 - Added onlySpaces variable to allow the @function and ;comment styles to be indented
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// - Modified HasFunction function to be a bit more robust
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// - Renamed HasFunction function to IsFunction
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// - Cleanup
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// Copyright 1998-2005 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include <string.h>
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#include <assert.h>
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#include <ctype.h>
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#include <string>
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#include <string_view>
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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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using namespace Lexilla;
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static inline bool IsStreamCommentStyle(int style) {
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return style == SCE_POWERPRO_COMMENTBLOCK;
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}
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static inline bool IsLineEndChar(unsigned char ch) {
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return ch == 0x0a //LF
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|| ch == 0x0c //FF
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|| ch == 0x0d; //CR
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}
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static bool IsContinuationLine(Sci_PositionU szLine, Accessor &styler)
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{
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Sci_Position startPos = styler.LineStart(szLine);
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Sci_Position endPos = styler.LineStart(szLine + 1) - 2;
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while (startPos < endPos)
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{
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char stylech = styler.StyleAt(startPos);
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if (!(stylech == SCE_POWERPRO_COMMENTBLOCK)) {
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char ch = styler.SafeGetCharAt(endPos);
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char chPrev = styler.SafeGetCharAt(endPos - 1);
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char chPrevPrev = styler.SafeGetCharAt(endPos - 2);
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if (ch > 0 && chPrev > 0 && chPrevPrev > 0 && !isspacechar(ch) && !isspacechar(chPrev) && !isspacechar(chPrevPrev) )
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return (chPrevPrev == ';' && chPrev == ';' && ch == '+');
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}
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endPos--; // skip to next char
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}
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return false;
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}
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// Routine to find first none space on the current line and return its Style
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// needed for comment lines not starting on pos 1
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static int GetStyleFirstWord(Sci_Position szLine, Accessor &styler)
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{
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Sci_Position startPos = styler.LineStart(szLine);
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Sci_Position endPos = styler.LineStart(szLine + 1) - 1;
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char ch = styler.SafeGetCharAt(startPos);
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while (ch > 0 && isspacechar(ch) && startPos < endPos)
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{
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startPos++; // skip to next char
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ch = styler.SafeGetCharAt(startPos);
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}
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return styler.StyleAt(startPos);
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}
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//returns true if there is a function to highlight
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//used to highlight <name> in 'function <name>'
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//note:
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// sample line (without quotes): "\tfunction asdf()
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// currentPos will be the position of 'a'
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static bool IsFunction(Accessor &styler, Sci_PositionU currentPos) {
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const char function[10] = "function "; //10 includes \0
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unsigned int numberOfCharacters = sizeof(function) - 1;
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Sci_PositionU position = currentPos - numberOfCharacters;
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//compare each character with the letters in the function array
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//return false if ALL don't match
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for (Sci_PositionU i = 0; i < numberOfCharacters; i++) {
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char c = styler.SafeGetCharAt(position++);
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if (c != function[i])
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return false;
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}
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//make sure that there are only spaces (or tabs) between the beginning
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//of the line and the function declaration
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position = currentPos - numberOfCharacters - 1; //-1 to move to char before 'function'
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for (Sci_PositionU j = 0; j < 16; j++) { //check up to 16 preceeding characters
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char c = styler.SafeGetCharAt(position--, '\0'); //if can't read char, return NUL (past beginning of document)
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if (c <= 0) //reached beginning of document
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return true;
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if (c > 0 && IsLineEndChar(c))
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return true;
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else if (c > 0 && !IsASpaceOrTab(c))
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return false;
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}
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//fall-through
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return false;
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}
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static void ColourisePowerProDoc(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[],
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Accessor &styler, bool caseSensitive) {
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WordList &keywords = *keywordlists[0];
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WordList &keywords2 = *keywordlists[1];
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WordList &keywords3 = *keywordlists[2];
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WordList &keywords4 = *keywordlists[3];
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//define the character sets
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CharacterSet setWordStart(CharacterSet::setAlpha, "_@", 0x80, true);
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CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
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StyleContext sc(startPos, length, initStyle, styler);
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char s_save[100]; //for last line highlighting
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//are there only spaces between the first letter of the line and the beginning of the line
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bool onlySpaces = true;
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for (; sc.More(); sc.Forward()) {
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// save the total current word for eof processing
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char s[100];
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sc.GetCurrentLowered(s, sizeof(s));
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if ((sc.ch > 0) && setWord.Contains(sc.ch))
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{
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strcpy(s_save,s);
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int tp = static_cast<int>(strlen(s_save));
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if (tp < 99) {
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s_save[tp] = static_cast<char>(tolower(sc.ch));
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s_save[tp+1] = '\0';
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}
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}
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if (sc.atLineStart) {
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if (sc.state == SCE_POWERPRO_DOUBLEQUOTEDSTRING) {
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// Prevent SCE_POWERPRO_STRINGEOL from leaking back to previous line which
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// ends with a line continuation by locking in the state upto this position.
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sc.SetState(SCE_POWERPRO_DOUBLEQUOTEDSTRING);
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}
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}
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// Determine if the current state should terminate.
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switch (sc.state) {
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case SCE_POWERPRO_OPERATOR:
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sc.SetState(SCE_POWERPRO_DEFAULT);
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break;
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case SCE_POWERPRO_NUMBER:
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if (!IsADigit(sc.ch))
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sc.SetState(SCE_POWERPRO_DEFAULT);
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break;
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case SCE_POWERPRO_IDENTIFIER:
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//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
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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
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char s[1000];
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if (caseSensitive) {
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sc.GetCurrent(s, sizeof(s));
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} else {
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sc.GetCurrentLowered(s, sizeof(s));
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}
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if (keywords.InList(s)) {
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sc.ChangeState(SCE_POWERPRO_WORD);
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} else if (keywords2.InList(s)) {
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sc.ChangeState(SCE_POWERPRO_WORD2);
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} else if (keywords3.InList(s)) {
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sc.ChangeState(SCE_POWERPRO_WORD3);
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} else if (keywords4.InList(s)) {
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sc.ChangeState(SCE_POWERPRO_WORD4);
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}
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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break;
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case SCE_POWERPRO_LINECONTINUE:
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if (sc.atLineStart) {
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sc.SetState(SCE_POWERPRO_DEFAULT);
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} else if (sc.Match('/', '*') || sc.Match('/', '/')) {
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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break;
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case SCE_POWERPRO_COMMENTBLOCK:
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if (sc.Match('*', '/')) {
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sc.Forward();
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sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
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}
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break;
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case SCE_POWERPRO_COMMENTLINE:
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if (sc.atLineStart) {
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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break;
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case SCE_POWERPRO_DOUBLEQUOTEDSTRING:
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if (sc.atLineEnd) {
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sc.ChangeState(SCE_POWERPRO_STRINGEOL);
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} else if (sc.ch == '\\') {
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if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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sc.Forward();
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}
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} else if (sc.ch == '\"') {
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sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
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}
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break;
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case SCE_POWERPRO_SINGLEQUOTEDSTRING:
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if (sc.atLineEnd) {
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sc.ChangeState(SCE_POWERPRO_STRINGEOL);
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} else if (sc.ch == '\\') {
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if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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sc.Forward();
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}
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} else if (sc.ch == '\'') {
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sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
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}
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break;
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case SCE_POWERPRO_STRINGEOL:
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if (sc.atLineStart) {
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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break;
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case SCE_POWERPRO_VERBATIM:
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if (sc.ch == '\"') {
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if (sc.chNext == '\"') {
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sc.Forward();
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} else {
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sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
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}
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}
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break;
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case SCE_POWERPRO_ALTQUOTE:
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if (sc.ch == '#') {
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if (sc.chNext == '#') {
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sc.Forward();
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} else {
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sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
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}
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}
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break;
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case SCE_POWERPRO_FUNCTION:
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if (isspacechar(sc.ch) || sc.ch == '(') {
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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break;
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}
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// Determine if a new state should be entered.
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if (sc.state == SCE_POWERPRO_DEFAULT) {
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if (sc.Match('?', '\"')) {
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sc.SetState(SCE_POWERPRO_VERBATIM);
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sc.Forward();
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} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
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sc.SetState(SCE_POWERPRO_NUMBER);
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}else if (sc.Match('?','#')) {
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if (sc.ch == '?' && sc.chNext == '#') {
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sc.SetState(SCE_POWERPRO_ALTQUOTE);
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sc.Forward();
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}
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} else if (IsFunction(styler, sc.currentPos)) { //highlight <name> in 'function <name>'
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sc.SetState(SCE_POWERPRO_FUNCTION);
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} else if (onlySpaces && sc.ch == '@') { //alternate function definition [label]
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sc.SetState(SCE_POWERPRO_FUNCTION);
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} else if ((sc.ch > 0) && (setWordStart.Contains(sc.ch) || (sc.ch == '?'))) {
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sc.SetState(SCE_POWERPRO_IDENTIFIER);
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} else if (sc.Match(";;+")) {
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sc.SetState(SCE_POWERPRO_LINECONTINUE);
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} else if (sc.Match('/', '*')) {
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sc.SetState(SCE_POWERPRO_COMMENTBLOCK);
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sc.Forward(); // Eat the * so it isn't used for the end of the comment
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} else if (sc.Match('/', '/')) {
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sc.SetState(SCE_POWERPRO_COMMENTLINE);
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} else if (onlySpaces && sc.ch == ';') { //legacy comment that can only have blank space in front of it
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sc.SetState(SCE_POWERPRO_COMMENTLINE);
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} else if (sc.Match(";;")) {
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sc.SetState(SCE_POWERPRO_COMMENTLINE);
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} else if (sc.ch == '\"') {
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sc.SetState(SCE_POWERPRO_DOUBLEQUOTEDSTRING);
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} else if (sc.ch == '\'') {
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sc.SetState(SCE_POWERPRO_SINGLEQUOTEDSTRING);
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} else if (isoperator(static_cast<char>(sc.ch))) {
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sc.SetState(SCE_POWERPRO_OPERATOR);
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}
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}
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//maintain a record of whether or not all the preceding characters on
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//a line are space characters
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if (onlySpaces && !IsASpaceOrTab(sc.ch))
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onlySpaces = false;
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//reset when starting a new line
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if (sc.atLineEnd)
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onlySpaces = true;
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}
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//*************************************
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// Colourize the last word correctly
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//*************************************
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if (sc.state == SCE_POWERPRO_IDENTIFIER)
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{
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if (keywords.InList(s_save)) {
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sc.ChangeState(SCE_POWERPRO_WORD);
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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else if (keywords2.InList(s_save)) {
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sc.ChangeState(SCE_POWERPRO_WORD2);
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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else if (keywords3.InList(s_save)) {
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sc.ChangeState(SCE_POWERPRO_WORD3);
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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else if (keywords4.InList(s_save)) {
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sc.ChangeState(SCE_POWERPRO_WORD4);
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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else {
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sc.SetState(SCE_POWERPRO_DEFAULT);
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}
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}
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sc.Complete();
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}
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static void FoldPowerProDoc(Sci_PositionU startPos, Sci_Position length, int, WordList *[], Accessor &styler)
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{
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//define the character sets
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CharacterSet setWordStart(CharacterSet::setAlpha, "_@", 0x80, true);
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CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
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//used to tell if we're recursively folding the whole document, or just a small piece (ie: if statement or 1 function)
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bool isFoldingAll = true;
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Sci_Position endPos = startPos + length;
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Sci_Position lastLine = styler.GetLine(styler.Length()); //used to help fold the last line correctly
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// get settings from the config files for folding comments and preprocessor lines
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bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
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bool foldInComment = styler.GetPropertyInt("fold.comment") == 2;
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bool foldCompact = true;
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// Backtrack to previous line in case need to fix its fold status
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Sci_Position lineCurrent = styler.GetLine(startPos);
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if (startPos > 0) {
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isFoldingAll = false;
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if (lineCurrent > 0) {
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lineCurrent--;
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startPos = styler.LineStart(lineCurrent);
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}
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}
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// vars for style of previous/current/next lines
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int style = GetStyleFirstWord(lineCurrent,styler);
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int stylePrev = 0;
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// find the first previous line without continuation character at the end
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while ((lineCurrent > 0 && IsContinuationLine(lineCurrent, styler))
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|| (lineCurrent > 1 && IsContinuationLine(lineCurrent - 1, styler))) {
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lineCurrent--;
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startPos = styler.LineStart(lineCurrent);
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}
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if (lineCurrent > 0) {
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stylePrev = GetStyleFirstWord(lineCurrent-1,styler);
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}
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// vars for getting first word to check for keywords
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bool isFirstWordStarted = false;
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bool isFirstWordEnded = false;
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const unsigned int FIRST_WORD_MAX_LEN = 10;
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char szFirstWord[FIRST_WORD_MAX_LEN] = "";
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unsigned int firstWordLen = 0;
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char szDo[3]="";
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int szDolen = 0;
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bool isDoLastWord = false;
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// var for indentlevel
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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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int visibleChars = 0;
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int functionCount = 0;
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char chNext = styler.SafeGetCharAt(startPos);
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char chPrev = '\0';
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char chPrevPrev = '\0';
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char chPrevPrevPrev = '\0';
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for (Sci_Position i = startPos; i < endPos; i++) {
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char ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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if ((ch > 0) && setWord.Contains(ch))
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visibleChars++;
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// get the syle for the current character neede to check in comment
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int stylech = styler.StyleAt(i);
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// start the capture of the first word
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if (!isFirstWordStarted && (ch > 0)) {
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if (setWord.Contains(ch) || setWordStart.Contains(ch) || ch == ';' || ch == '/') {
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isFirstWordStarted = true;
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if (firstWordLen < FIRST_WORD_MAX_LEN - 1) {
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szFirstWord[firstWordLen++] = static_cast<char>(tolower(ch));
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szFirstWord[firstWordLen] = '\0';
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}
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}
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} // continue capture of the first word on the line
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else if (isFirstWordStarted && !isFirstWordEnded && (ch > 0)) {
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if (!setWord.Contains(ch)) {
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isFirstWordEnded = true;
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}
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else if (firstWordLen < (FIRST_WORD_MAX_LEN - 1)) {
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szFirstWord[firstWordLen++] = static_cast<char>(tolower(ch));
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szFirstWord[firstWordLen] = '\0';
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}
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}
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if (stylech != SCE_POWERPRO_COMMENTLINE) {
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//reset isDoLastWord if we find a character(ignoring spaces) after 'do'
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if (isDoLastWord && (ch > 0) && setWord.Contains(ch))
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isDoLastWord = false;
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// --find out if the word "do" is the last on a "if" line--
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// collect each letter and put it into a buffer 2 chars long
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// if we end up with "do" in the buffer when we reach the end of
|
|
// the line, "do" was the last word on the line
|
|
if ((ch > 0) && isFirstWordEnded && strcmp(szFirstWord, "if") == 0) {
|
|
if (szDolen == 2) {
|
|
szDo[0] = szDo[1];
|
|
szDo[1] = static_cast<char>(tolower(ch));
|
|
szDo[2] = '\0';
|
|
|
|
if (strcmp(szDo, "do") == 0)
|
|
isDoLastWord = 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') // \r\n
|
|
|| ch == '\n' // \n
|
|
|| i == endPos) { // end of selection
|
|
|
|
// **************************
|
|
// 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 (firstWordLen > 0
|
|
&& chPrev != '+' && chPrevPrev != ';' && chPrevPrevPrev !=';'
|
|
&& (!IsStreamCommentStyle(style) || foldInComment) ) {
|
|
|
|
// only fold "if" last keyword is "then" (else its a one line if)
|
|
if (strcmp(szFirstWord, "if") == 0 && isDoLastWord)
|
|
levelNext++;
|
|
|
|
// create new fold for these words
|
|
if (strcmp(szFirstWord, "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(szFirstWord, "function") == 0) || (firstWordLen > 0 && szFirstWord[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(szFirstWord, "endif") == 0 || strcmp(szFirstWord, "endfor") == 0) {
|
|
levelNext--;
|
|
levelCurrent--;
|
|
}
|
|
|
|
// end the fold for these words before the current line and Start new fold
|
|
if (strcmp(szFirstWord, "else") == 0 || strcmp(szFirstWord, "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 != ';') {
|
|
firstWordLen = 0;
|
|
szDolen = 0;
|
|
isFirstWordStarted = false;
|
|
isFirstWordEnded = false;
|
|
isDoLastWord = false;
|
|
|
|
//blank out first word
|
|
for (unsigned int i = 0; i < FIRST_WORD_MAX_LEN; i++)
|
|
szFirstWord[i] = '\0';
|
|
}
|
|
}
|
|
|
|
// save the last processed characters
|
|
if ((ch > 0) && !isspacechar(ch)) {
|
|
chPrevPrevPrev = chPrevPrev;
|
|
chPrevPrev = chPrev;
|
|
chPrev = ch;
|
|
}
|
|
}
|
|
|
|
//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(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[],
|
|
Accessor &styler) {
|
|
ColourisePowerProDoc(startPos, length, initStyle, keywordlists, styler, false);
|
|
}
|
|
|
|
LexerModule lmPowerPro(SCLEX_POWERPRO, ColourisePowerProDocWrapper, "powerpro", FoldPowerProDoc, powerProWordLists);
|
|
|
|
|