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// Scintilla source code edit control
/** @file LexESCRIPT.cxx
** Lexer for ESCRIPT
**/
// Copyright 2003 by Patrizio Bekerle (patrizio@bekerle.com)
#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(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_');
}
static inline bool IsAWordStart(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '_');
}
static void ColouriseESCRIPTDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
Accessor &styler) {
WordList &keywords = *keywordlists[0];
WordList &keywords2 = *keywordlists[1];
WordList &keywords3 = *keywordlists[2];
// Do not leak onto next line
/*if (initStyle == SCE_ESCRIPT_STRINGEOL)
initStyle = SCE_ESCRIPT_DEFAULT;*/
StyleContext sc(startPos, length, initStyle, styler);
bool caseSensitive = styler.GetPropertyInt("escript.case.sensitive", 0) != 0;
for (; sc.More(); sc.Forward()) {
/*if (sc.atLineStart && (sc.state == SCE_ESCRIPT_STRING)) {
// Prevent SCE_ESCRIPT_STRINGEOL from leaking back to previous line
sc.SetState(SCE_ESCRIPT_STRING);
}*/
// Handle line continuation generically.
if (sc.ch == '\\') {
if (sc.chNext == '\n' || sc.chNext == '\r') {
sc.Forward();
if (sc.ch == '\r' && sc.chNext == '\n') {
sc.Forward();
}
continue;
}
}
// Determine if the current state should terminate.
if (sc.state == SCE_ESCRIPT_OPERATOR || sc.state == SCE_ESCRIPT_BRACE) {
sc.SetState(SCE_ESCRIPT_DEFAULT);
} else if (sc.state == SCE_ESCRIPT_NUMBER) {
if (!IsADigit(sc.ch) || sc.ch != '.') {
sc.SetState(SCE_ESCRIPT_DEFAULT);
}
} else if (sc.state == SCE_ESCRIPT_IDENTIFIER) {
if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
char s[100];
if (caseSensitive) {
sc.GetCurrent(s, sizeof(s));
} else {
sc.GetCurrentLowered(s, sizeof(s));
}
// sc.GetCurrentLowered(s, sizeof(s));
if (keywords.InList(s)) {
sc.ChangeState(SCE_ESCRIPT_WORD);
} else if (keywords2.InList(s)) {
sc.ChangeState(SCE_ESCRIPT_WORD2);
} else if (keywords3.InList(s)) {
sc.ChangeState(SCE_ESCRIPT_WORD3);
// sc.state = SCE_ESCRIPT_IDENTIFIER;
}
sc.SetState(SCE_ESCRIPT_DEFAULT);
}
} else if (sc.state == SCE_ESCRIPT_COMMENT) {
if (sc.Match('*', '/')) {
sc.Forward();
sc.ForwardSetState(SCE_ESCRIPT_DEFAULT);
}
} else if (sc.state == SCE_ESCRIPT_COMMENTDOC) {
if (sc.Match('*', '/')) {
sc.Forward();
sc.ForwardSetState(SCE_ESCRIPT_DEFAULT);
}
} else if (sc.state == SCE_ESCRIPT_COMMENTLINE) {
if (sc.atLineEnd) {
sc.SetState(SCE_ESCRIPT_DEFAULT);
}
} else if (sc.state == SCE_ESCRIPT_STRING) {
if (sc.ch == '\\') {
if (sc.chNext == '\"' || sc.chNext == '\\') {
sc.Forward();
}
} else if (sc.ch == '\"') {
sc.ForwardSetState(SCE_ESCRIPT_DEFAULT);
}
}
// Determine if a new state should be entered.
if (sc.state == SCE_ESCRIPT_DEFAULT) {
if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
sc.SetState(SCE_ESCRIPT_NUMBER);
} else if (IsAWordStart(sc.ch) || (sc.ch == '#')) {
sc.SetState(SCE_ESCRIPT_IDENTIFIER);
} else if (sc.Match('/', '*')) {
sc.SetState(SCE_ESCRIPT_COMMENT);
sc.Forward(); // Eat the * so it isn't used for the end of the comment
} else if (sc.Match('/', '/')) {
sc.SetState(SCE_ESCRIPT_COMMENTLINE);
} else if (sc.ch == '\"') {
sc.SetState(SCE_ESCRIPT_STRING);
//} else if (isoperator(static_cast<char>(sc.ch))) {
} else if (sc.ch == '+' || sc.ch == '-' || sc.ch == '*' || sc.ch == '/' || sc.ch == '=' || sc.ch == '<' || sc.ch == '>' || sc.ch == '&' || sc.ch == '|' || sc.ch == '!' || sc.ch == '?' || sc.ch == ':') {
sc.SetState(SCE_ESCRIPT_OPERATOR);
} else if (sc.ch == '{' || sc.ch == '}') {
sc.SetState(SCE_ESCRIPT_BRACE);
}
}
}
sc.Complete();
}
static int classifyFoldPointESCRIPT(const char* s, const char* prevWord) {
int lev = 0;
if (strcmp(prevWord, "end") == 0) return lev;
if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) || strcmp(s, "elseif") == 0)
return -1;
if (strcmp(s, "for") == 0 || strcmp(s, "foreach") == 0
|| strcmp(s, "program") == 0 || strcmp(s, "function") == 0
|| strcmp(s, "while") == 0 || strcmp(s, "case") == 0
|| strcmp(s, "if") == 0 ) {
lev = 1;
} else if ( strcmp(s, "endfor") == 0 || strcmp(s, "endforeach") == 0
|| strcmp(s, "endprogram") == 0 || strcmp(s, "endfunction") == 0
|| strcmp(s, "endwhile") == 0 || strcmp(s, "endcase") == 0
|| strcmp(s, "endif") == 0 ) {
lev = -1;
}
return lev;
}
static bool IsStreamCommentStyle(int style) {
return style == SCE_ESCRIPT_COMMENT ||
style == SCE_ESCRIPT_COMMENTDOC ||
style == SCE_ESCRIPT_COMMENTLINE;
}
static void FoldESCRIPTDoc(unsigned int startPos, int length, int initStyle, WordList *[], Accessor &styler) {
//~ bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
// Do not know how to fold the comment at the moment.
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
bool foldComment = true;
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;
int lastStart = 0;
char prevWord[32] = "";
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 && IsStreamCommentStyle(style)) {
if (!IsStreamCommentStyle(stylePrev)) {
levelCurrent++;
} else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
// Comments don't end at end of line and the next character may be unstyled.
levelCurrent--;
}
}
if (foldComment && (style == SCE_ESCRIPT_COMMENTLINE)) {
if ((ch == '/') && (chNext == '/')) {
char chNext2 = styler.SafeGetCharAt(i + 2);
if (chNext2 == '{') {
levelCurrent++;
} else if (chNext2 == '}') {
levelCurrent--;
}
}
}
if (stylePrev == SCE_ESCRIPT_DEFAULT && style == SCE_ESCRIPT_WORD3)
{
// Store last word start point.
lastStart = i;
}
if (style == SCE_ESCRIPT_WORD3) {
if(iswordchar(ch) && !iswordchar(chNext)) {
char s[32];
unsigned int j;
for(j = 0; ( j < 31 ) && ( j < i-lastStart+1 ); j++) {
s[j] = static_cast<char>(tolower(styler[lastStart + j]));
}
s[j] = '\0';
levelCurrent += classifyFoldPointESCRIPT(s, prevWord);
strcpy(prevWord, s);
}
}
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;
strcpy(prevWord, "");
}
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 ESCRIPTWordLists[] = {
"Primary keywords and identifiers",
"Intrinsic functions",
"Extended and user defined functions",
0,
};
LexerModule lmESCRIPT(SCLEX_ESCRIPT, ColouriseESCRIPTDoc, "escript", FoldESCRIPTDoc, ESCRIPTWordLists);
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