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ZoneBuilder/Documents/Scintilla/LexSpecman.cxx

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// Scintilla source code edit control
/** @file LexSpecman.cxx
** Lexer for Specman E language.
** Written by Avi Yegudin, based on C++ lexer by Neil Hodgson
**/
// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#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 == '_' || ch == '\'');
}
static inline bool IsANumberChar(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '\'');
}
static inline bool IsAWordStart(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '`');
}
static void ColouriseSpecmanDoc(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];
// Do not leak onto next line
if (initStyle == SCE_SN_STRINGEOL)
initStyle = SCE_SN_CODE;
int visibleChars = 0;
StyleContext sc(startPos, length, initStyle, styler);
for (; sc.More(); sc.Forward()) {
if (sc.atLineStart && (sc.state == SCE_SN_STRING)) {
// Prevent SCE_SN_STRINGEOL from leaking back to previous line
sc.SetState(SCE_SN_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_SN_OPERATOR) {
sc.SetState(SCE_SN_CODE);
} else if (sc.state == SCE_SN_NUMBER) {
if (!IsANumberChar(sc.ch)) {
sc.SetState(SCE_SN_CODE);
}
} else if (sc.state == SCE_SN_IDENTIFIER) {
if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
char s[100];
if (caseSensitive) {
sc.GetCurrent(s, sizeof(s));
} else {
sc.GetCurrentLowered(s, sizeof(s));
}
if (keywords.InList(s)) {
sc.ChangeState(SCE_SN_WORD);
} else if (keywords2.InList(s)) {
sc.ChangeState(SCE_SN_WORD2);
} else if (keywords3.InList(s)) {
sc.ChangeState(SCE_SN_WORD3);
} else if (keywords4.InList(s)) {
sc.ChangeState(SCE_SN_USER);
}
sc.SetState(SCE_SN_CODE);
}
} else if (sc.state == SCE_SN_PREPROCESSOR) {
if (IsASpace(sc.ch)) {
sc.SetState(SCE_SN_CODE);
}
} else if (sc.state == SCE_SN_DEFAULT) {
if (sc.Match('<', '\'')) {
sc.Forward();
sc.ForwardSetState(SCE_SN_CODE);
}
} else if (sc.state == SCE_SN_COMMENTLINE || sc.state == SCE_SN_COMMENTLINEBANG) {
if (sc.atLineEnd) {
sc.SetState(SCE_SN_CODE);
visibleChars = 0;
}
} else if (sc.state == SCE_SN_STRING) {
if (sc.ch == '\\') {
if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
sc.Forward();
}
} else if (sc.ch == '\"') {
sc.ForwardSetState(SCE_SN_CODE);
} else if (sc.atLineEnd) {
sc.ChangeState(SCE_SN_STRINGEOL);
sc.ForwardSetState(SCE_SN_CODE);
visibleChars = 0;
}
} else if (sc.state == SCE_SN_SIGNAL) {
if (sc.atLineEnd) {
sc.ChangeState(SCE_SN_STRINGEOL);
sc.ForwardSetState(SCE_SN_CODE);
visibleChars = 0;
} else if (sc.ch == '\\') {
if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
sc.Forward();
}
} else if (sc.ch == '\'') {
sc.ForwardSetState(SCE_SN_CODE);
}
} else if (sc.state == SCE_SN_REGEXTAG) {
if (!IsADigit(sc.ch)) {
sc.SetState(SCE_SN_CODE);
}
}
// Determine if a new state should be entered.
if (sc.state == SCE_SN_CODE) {
if (sc.ch == '$' && IsADigit(sc.chNext)) {
sc.SetState(SCE_SN_REGEXTAG);
sc.Forward();
} else if (IsADigit(sc.ch)) {
sc.SetState(SCE_SN_NUMBER);
} else if (IsAWordStart(sc.ch)) {
sc.SetState(SCE_SN_IDENTIFIER);
} else if (sc.Match('\'', '>')) {
sc.SetState(SCE_SN_DEFAULT);
sc.Forward(); // Eat the * so it isn't used for the end of the comment
} else if (sc.Match('/', '/')) {
if (sc.Match("//!")) // Nice to have a different comment style
sc.SetState(SCE_SN_COMMENTLINEBANG);
else
sc.SetState(SCE_SN_COMMENTLINE);
} else if (sc.Match('-', '-')) {
if (sc.Match("--!")) // Nice to have a different comment style
sc.SetState(SCE_SN_COMMENTLINEBANG);
else
sc.SetState(SCE_SN_COMMENTLINE);
} else if (sc.ch == '\"') {
sc.SetState(SCE_SN_STRING);
} else if (sc.ch == '\'') {
sc.SetState(SCE_SN_SIGNAL);
} else if (sc.ch == '#' && visibleChars == 0) {
// Preprocessor commands are alone on their line
sc.SetState(SCE_SN_PREPROCESSOR);
// Skip whitespace between # and preprocessor word
do {
sc.Forward();
} while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
if (sc.atLineEnd) {
sc.SetState(SCE_SN_CODE);
}
} else if (isoperator(static_cast<char>(sc.ch)) || sc.ch == '@') {
sc.SetState(SCE_SN_OPERATOR);
}
}
if (sc.atLineEnd) {
// Reset states to begining of colourise so no surprises
// if different sets of lines lexed.
visibleChars = 0;
}
if (!IsASpace(sc.ch)) {
visibleChars++;
}
}
sc.Complete();
}
// Store both the current line's fold level and the next lines in the
// level store to make it easy to pick up with each increment
// and to make it possible to fiddle the current level for "} else {".
static void FoldNoBoxSpecmanDoc(unsigned int startPos, int length, int,
Accessor &styler) {
bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
unsigned int endPos = startPos + length;
int visibleChars = 0;
int lineCurrent = styler.GetLine(startPos);
int levelCurrent = SC_FOLDLEVELBASE;
if (lineCurrent > 0)
levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
int levelMinCurrent = levelCurrent;
int levelNext = levelCurrent;
char chNext = styler[startPos];
int styleNext = styler.StyleAt(startPos);
int style;
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 && (style == SCE_SN_COMMENTLINE)) {
if (((ch == '/') && (chNext == '/')) ||
((ch == '-') && (chNext == '-'))) {
char chNext2 = styler.SafeGetCharAt(i + 2);
if (chNext2 == '{') {
levelNext++;
} else if (chNext2 == '}') {
levelNext--;
}
}
}
if (style == SCE_SN_OPERATOR) {
if (ch == '{') {
// Measure the minimum before a '{' to allow
// folding on "} else {"
if (levelMinCurrent > levelNext) {
levelMinCurrent = levelNext;
}
levelNext++;
} else if (ch == '}') {
levelNext--;
}
}
if (atEOL) {
int levelUse = levelCurrent;
if (foldAtElse) {
levelUse = levelMinCurrent;
}
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);
}
lineCurrent++;
levelCurrent = levelNext;
levelMinCurrent = levelCurrent;
visibleChars = 0;
}
if (!isspacechar(ch))
visibleChars++;
}
}
static void FoldSpecmanDoc(unsigned int startPos, int length, int initStyle, WordList *[],
Accessor &styler) {
FoldNoBoxSpecmanDoc(startPos, length, initStyle, styler);
}
static const char * const specmanWordLists[] = {
"Primary keywords and identifiers",
"Secondary keywords and identifiers",
"Sequence keywords and identifiers",
"User defined keywords and identifiers",
"Unused",
0,
};
static void ColouriseSpecmanDocSensitive(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
Accessor &styler) {
ColouriseSpecmanDoc(startPos, length, initStyle, keywordlists, styler, true);
}
LexerModule lmSpecman(SCLEX_SPECMAN, ColouriseSpecmanDocSensitive, "specman", FoldSpecmanDoc, specmanWordLists);
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