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// SciTE - Scintilla based Text Editor
/** @file LexAVE.cxx
** Lexer for Avenue.
**
** Written by Alexey Yutkin <yutkin@geol.msu.ru>.
**/
// 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 <stdarg.h>
#include <stdio.h>
#include "Platform.h"
#include "PropSet.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "KeyWords.h"
#include "Scintilla.h"
#include "SciLexer.h"
static inline bool IsAWordChar(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_');
}
static inline bool IsEnumChar(const int ch) {
return (ch < 0x80) && (isalnum(ch)|| ch == '_');
}
static inline bool IsANumberChar(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '.' );
}
inline bool IsAWordStart(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '_');
}
inline bool isAveOperator(char ch) {
if (isalnum(ch))
return false;
// '.' left out as it is used to make up numbers
if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
ch == '(' || ch == ')' || ch == '=' ||
ch == '{' || ch == '}' ||
ch == '[' || ch == ']' || ch == ';' ||
ch == '<' || ch == '>' || ch == ',' ||
ch == '.' )
return true;
return false;
}
static void ColouriseAveDoc(
unsigned int startPos,
int length,
int initStyle,
WordList *keywordlists[],
Accessor &styler) {
WordList &keywords = *keywordlists[0];
WordList &keywords2 = *keywordlists[1];
WordList &keywords3 = *keywordlists[2];
WordList &keywords4 = *keywordlists[3];
WordList &keywords5 = *keywordlists[4];
WordList &keywords6 = *keywordlists[5];
// Do not leak onto next line
if (initStyle == SCE_AVE_STRINGEOL) {
initStyle = SCE_AVE_DEFAULT;
}
StyleContext sc(startPos, length, initStyle, styler);
for (; sc.More(); sc.Forward()) {
if (sc.atLineEnd) {
// Update the line state, so it can be seen by next line
int currentLine = styler.GetLine(sc.currentPos);
styler.SetLineState(currentLine, 0);
}
if (sc.atLineStart && (sc.state == SCE_AVE_STRING)) {
// Prevent SCE_AVE_STRINGEOL from leaking back to previous line
sc.SetState(SCE_AVE_STRING);
}
// Determine if the current state should terminate.
if (sc.state == SCE_AVE_OPERATOR) {
sc.SetState(SCE_AVE_DEFAULT);
} else if (sc.state == SCE_AVE_NUMBER) {
if (!IsANumberChar(sc.ch)) {
sc.SetState(SCE_AVE_DEFAULT);
}
} else if (sc.state == SCE_AVE_ENUM) {
if (!IsEnumChar(sc.ch)) {
sc.SetState(SCE_AVE_DEFAULT);
}
} else if (sc.state == SCE_AVE_IDENTIFIER) {
if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
char s[100];
//sc.GetCurrent(s, sizeof(s));
sc.GetCurrentLowered(s, sizeof(s));
if (keywords.InList(s)) {
sc.ChangeState(SCE_AVE_WORD);
} else if (keywords2.InList(s)) {
sc.ChangeState(SCE_AVE_WORD2);
} else if (keywords3.InList(s)) {
sc.ChangeState(SCE_AVE_WORD3);
} else if (keywords4.InList(s)) {
sc.ChangeState(SCE_AVE_WORD4);
} else if (keywords5.InList(s)) {
sc.ChangeState(SCE_AVE_WORD5);
} else if (keywords6.InList(s)) {
sc.ChangeState(SCE_AVE_WORD6);
}
sc.SetState(SCE_AVE_DEFAULT);
}
} else if (sc.state == SCE_AVE_COMMENT) {
if (sc.atLineEnd) {
sc.SetState(SCE_AVE_DEFAULT);
}
} else if (sc.state == SCE_AVE_STRING) {
if (sc.ch == '\"') {
sc.ForwardSetState(SCE_AVE_DEFAULT);
} else if (sc.atLineEnd) {
sc.ChangeState(SCE_AVE_STRINGEOL);
sc.ForwardSetState(SCE_AVE_DEFAULT);
}
}
// Determine if a new state should be entered.
if (sc.state == SCE_AVE_DEFAULT) {
if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
sc.SetState(SCE_AVE_NUMBER);
} else if (IsAWordStart(sc.ch)) {
sc.SetState(SCE_AVE_IDENTIFIER);
} else if (sc.Match('\"')) {
sc.SetState(SCE_AVE_STRING);
} else if (sc.Match('\'')) {
sc.SetState(SCE_AVE_COMMENT);
sc.Forward();
} else if (isAveOperator(static_cast<char>(sc.ch))) {
sc.SetState(SCE_AVE_OPERATOR);
} else if (sc.Match('#')) {
sc.SetState(SCE_AVE_ENUM);
sc.Forward();
}
}
}
sc.Complete();
}
static void FoldAveDoc(unsigned int startPos, int length, int /* initStyle */, WordList *[],
Accessor &styler) {
unsigned int lengthDoc = startPos + length;
int visibleChars = 0;
int lineCurrent = styler.GetLine(startPos);
int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
int levelCurrent = levelPrev;
char chNext = static_cast<char>(tolower(styler[startPos]));
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
int styleNext = styler.StyleAt(startPos);
char s[10];
for (unsigned int i = startPos; i < lengthDoc; i++) {
char ch = static_cast<char>(tolower(chNext));
chNext = static_cast<char>(tolower(styler.SafeGetCharAt(i + 1)));
int style = styleNext;
styleNext = styler.StyleAt(i + 1);
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
if (style == SCE_AVE_WORD) {
if (ch == 't' || ch == 'f' || ch == 'w' || ch == 'e') {
for (unsigned int j = 0; j < 6; j++) {
if (!iswordchar(styler[i + j])) {
break;
}
s[j] = static_cast<char>(tolower(styler[i + j]));
s[j + 1] = '\0';
}
if ((strcmp(s, "then") == 0) || (strcmp(s, "for") == 0) || (strcmp(s, "while") == 0)) {
levelCurrent++;
}
if ((strcmp(s, "end") == 0) || (strcmp(s, "elseif") == 0)) {
// Normally "elseif" and "then" will be on the same line and will cancel
// each other out. // As implemented, this does not support fold.at.else.
levelCurrent--;
}
}
} else if (style == SCE_AVE_OPERATOR) {
if (ch == '{' || ch == '(') {
levelCurrent++;
} else if (ch == '}' || ch == ')') {
levelCurrent--;
}
}
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;
}
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);
}
LexerModule lmAVE(SCLEX_AVE, ColouriseAveDoc, "ave", FoldAveDoc);
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