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iup-stack/iup/srcscintilla/scintilla3112/lexers/LexPowerPro.cxx

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// 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 szFirstWord 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
// passing 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
// 2010-06-03 - Added onlySpaces variable to allow the @function and ;comment styles to be indented
// - Modified HasFunction function to be a bit more robust
// - Renamed HasFunction function to IsFunction
// - Cleanup
// Copyright 1998-2005 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <string.h>
#include <assert.h>
#include <ctype.h>
#include "ILexer.h"
#include "Scintilla.h"
#include "SciLexer.h"
#include "WordList.h"
#include "LexAccessor.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "CharacterSet.h"
#include "LexerModule.h"
using namespace Scintilla;
static inline bool IsStreamCommentStyle(int style) {
return style == SCE_POWERPRO_COMMENTBLOCK;
}
static inline bool IsLineEndChar(unsigned char ch) {
return ch == 0x0a //LF
|| ch == 0x0c //FF
|| ch == 0x0d; //CR
}
static bool IsContinuationLine(Sci_PositionU szLine, Accessor &styler)
{
Sci_Position startPos = styler.LineStart(szLine);
Sci_Position endPos = styler.LineStart(szLine + 1) - 2;
while (startPos < endPos)
{
char stylech = styler.StyleAt(startPos);
if (!(stylech == SCE_POWERPRO_COMMENTBLOCK)) {
char ch = styler.SafeGetCharAt(endPos);
char chPrev = styler.SafeGetCharAt(endPos - 1);
char chPrevPrev = styler.SafeGetCharAt(endPos - 2);
if (ch > 0 && chPrev > 0 && chPrevPrev > 0 && !isspacechar(ch) && !isspacechar(chPrev) && !isspacechar(chPrevPrev) )
return (chPrevPrev == ';' && chPrev == ';' && ch == '+');
}
endPos--; // 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(Sci_Position szLine, Accessor &styler)
{
Sci_Position startPos = styler.LineStart(szLine);
Sci_Position endPos = styler.LineStart(szLine + 1) - 1;
char ch = styler.SafeGetCharAt(startPos);
while (ch > 0 && isspacechar(ch) && startPos < endPos)
{
startPos++; // skip to next char
ch = styler.SafeGetCharAt(startPos);
}
return styler.StyleAt(startPos);
}
//returns true if there is a function to highlight
//used to highlight <name> in 'function <name>'
//note:
// sample line (without quotes): "\tfunction asdf()
// currentPos will be the position of 'a'
static bool IsFunction(Accessor &styler, Sci_PositionU currentPos) {
const char function[10] = "function "; //10 includes \0
unsigned int numberOfCharacters = sizeof(function) - 1;
Sci_PositionU position = currentPos - numberOfCharacters;
//compare each character with the letters in the function array
//return false if ALL don't match
for (Sci_PositionU i = 0; i < numberOfCharacters; i++) {
char c = styler.SafeGetCharAt(position++);
if (c != function[i])
return false;
}
//make sure that there are only spaces (or tabs) between the beginning
//of the line and the function declaration
position = currentPos - numberOfCharacters - 1; //-1 to move to char before 'function'
for (Sci_PositionU j = 0; j < 16; j++) { //check up to 16 preceeding characters
char c = styler.SafeGetCharAt(position--, '\0'); //if can't read char, return NUL (past beginning of document)
if (c <= 0) //reached beginning of document
return true;
if (c > 0 && IsLineEndChar(c))
return true;
else if (c > 0 && !IsASpaceOrTab(c))
return false;
}
//fall-through
return false;
}
static void ColourisePowerProDoc(Sci_PositionU startPos, Sci_Position 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
//are there only spaces between the first letter of the line and the beginning of the line
bool onlySpaces = true;
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 = static_cast<int>(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 (isspacechar(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 (IsFunction(styler, sc.currentPos)) { //highlight <name> in 'function <name>'
sc.SetState(SCE_POWERPRO_FUNCTION);
} else if (onlySpaces && sc.ch == '@') { //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 (onlySpaces && sc.ch == ';') { //legacy comment that can only have blank space in front of it
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);
}
}
//maintain a record of whether or not all the preceding characters on
//a line are space characters
if (onlySpaces && !IsASpaceOrTab(sc.ch))
onlySpaces = false;
//reset when starting a new line
if (sc.atLineEnd)
onlySpaces = true;
}
//*************************************
// 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(Sci_PositionU startPos, Sci_Position length, int, WordList *[], Accessor &styler)
{
//define the character sets
CharacterSet setWordStart(CharacterSet::setAlpha, "_@", 0x80, true);
CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
//used to tell if we're recursively folding the whole document, or just a small piece (ie: if statement or 1 function)
bool isFoldingAll = true;
Sci_Position endPos = startPos + length;
Sci_Position 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
Sci_Position 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 isFirstWordStarted = false;
bool isFirstWordEnded = false;
const unsigned int FIRST_WORD_MAX_LEN = 10;
char szFirstWord[FIRST_WORD_MAX_LEN] = "";
unsigned int firstWordLen = 0;
char szDo[3]="";
int szDolen = 0;
bool isDoLastWord = 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 (Sci_Position 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);
// start the capture of the first word
if (!isFirstWordStarted && (ch > 0)) {
if (setWord.Contains(ch) || setWordStart.Contains(ch) || ch == ';' || ch == '/') {
isFirstWordStarted = true;
if (firstWordLen < FIRST_WORD_MAX_LEN - 1) {
szFirstWord[firstWordLen++] = static_cast<char>(tolower(ch));
szFirstWord[firstWordLen] = '\0';
}
}
} // continue capture of the first word on the line
else if (isFirstWordStarted && !isFirstWordEnded && (ch > 0)) {
if (!setWord.Contains(ch)) {
isFirstWordEnded = true;
}
else if (firstWordLen < (FIRST_WORD_MAX_LEN - 1)) {
szFirstWord[firstWordLen++] = static_cast<char>(tolower(ch));
szFirstWord[firstWordLen] = '\0';
}
}
if (stylech != SCE_POWERPRO_COMMENTLINE) {
//reset isDoLastWord if we find a character(ignoring spaces) after 'do'
if (isDoLastWord && (ch > 0) && setWord.Contains(ch))
isDoLastWord = false;
// --find out if the word "do" is the last on a "if" line--
// collect each letter and put it into a buffer 2 chars long
// 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);
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