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226 lines
6.4 KiB
226 lines
6.4 KiB
// SciTE - Scintilla based Text Editor
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/** @file LexAVE.cxx
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** Lexer for Avenue.
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**
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** Written by Alexey Yutkin <yutkin@geol.msu.ru>.
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**/
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// Copyright 1998-2002 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 <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include "Platform.h"
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#include "PropSet.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "KeyWords.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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static inline bool IsAWordChar(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_');
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}
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static inline bool IsEnumChar(const int ch) {
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return (ch < 0x80) && (isalnum(ch)|| ch == '_');
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}
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static inline bool IsANumberChar(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '.' );
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}
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inline bool IsAWordStart(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '_');
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}
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inline bool isAveOperator(char ch) {
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if (isalnum(ch))
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return false;
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// '.' left out as it is used to make up numbers
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if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
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ch == '(' || ch == ')' || ch == '=' ||
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ch == '{' || ch == '}' ||
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ch == '[' || ch == ']' || ch == ';' ||
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ch == '<' || ch == '>' || ch == ',' ||
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ch == '.' )
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return true;
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return false;
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}
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static void ColouriseAveDoc(
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unsigned int startPos,
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int length,
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int initStyle,
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WordList *keywordlists[],
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Accessor &styler) {
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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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WordList &keywords5 = *keywordlists[4];
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WordList &keywords6 = *keywordlists[5];
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// Do not leak onto next line
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if (initStyle == SCE_AVE_STRINGEOL) {
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initStyle = SCE_AVE_DEFAULT;
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}
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StyleContext sc(startPos, length, initStyle, styler);
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for (; sc.More(); sc.Forward()) {
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if (sc.atLineEnd) {
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// Update the line state, so it can be seen by next line
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int currentLine = styler.GetLine(sc.currentPos);
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styler.SetLineState(currentLine, 0);
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}
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if (sc.atLineStart && (sc.state == SCE_AVE_STRING)) {
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// Prevent SCE_AVE_STRINGEOL from leaking back to previous line
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sc.SetState(SCE_AVE_STRING);
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}
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// Determine if the current state should terminate.
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if (sc.state == SCE_AVE_OPERATOR) {
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sc.SetState(SCE_AVE_DEFAULT);
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} else if (sc.state == SCE_AVE_NUMBER) {
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if (!IsANumberChar(sc.ch)) {
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sc.SetState(SCE_AVE_DEFAULT);
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}
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} else if (sc.state == SCE_AVE_ENUM) {
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if (!IsEnumChar(sc.ch)) {
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sc.SetState(SCE_AVE_DEFAULT);
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}
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} else if (sc.state == SCE_AVE_IDENTIFIER) {
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if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
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char s[100];
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//sc.GetCurrent(s, sizeof(s));
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sc.GetCurrentLowered(s, sizeof(s));
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if (keywords.InList(s)) {
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sc.ChangeState(SCE_AVE_WORD);
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} else if (keywords2.InList(s)) {
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sc.ChangeState(SCE_AVE_WORD2);
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} else if (keywords3.InList(s)) {
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sc.ChangeState(SCE_AVE_WORD3);
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} else if (keywords4.InList(s)) {
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sc.ChangeState(SCE_AVE_WORD4);
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} else if (keywords5.InList(s)) {
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sc.ChangeState(SCE_AVE_WORD5);
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} else if (keywords6.InList(s)) {
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sc.ChangeState(SCE_AVE_WORD6);
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}
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sc.SetState(SCE_AVE_DEFAULT);
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}
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} else if (sc.state == SCE_AVE_COMMENT) {
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if (sc.atLineEnd) {
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sc.SetState(SCE_AVE_DEFAULT);
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}
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} else if (sc.state == SCE_AVE_STRING) {
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if (sc.ch == '\"') {
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sc.ForwardSetState(SCE_AVE_DEFAULT);
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} else if (sc.atLineEnd) {
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sc.ChangeState(SCE_AVE_STRINGEOL);
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sc.ForwardSetState(SCE_AVE_DEFAULT);
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}
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}
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// Determine if a new state should be entered.
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if (sc.state == SCE_AVE_DEFAULT) {
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if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
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sc.SetState(SCE_AVE_NUMBER);
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} else if (IsAWordStart(sc.ch)) {
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sc.SetState(SCE_AVE_IDENTIFIER);
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} else if (sc.Match('\"')) {
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sc.SetState(SCE_AVE_STRING);
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} else if (sc.Match('\'')) {
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sc.SetState(SCE_AVE_COMMENT);
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sc.Forward();
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} else if (isAveOperator(static_cast<char>(sc.ch))) {
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sc.SetState(SCE_AVE_OPERATOR);
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} else if (sc.Match('#')) {
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sc.SetState(SCE_AVE_ENUM);
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sc.Forward();
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}
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}
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}
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sc.Complete();
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}
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static void FoldAveDoc(unsigned int startPos, int length, int /* initStyle */, WordList *[],
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Accessor &styler) {
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unsigned int lengthDoc = startPos + length;
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int visibleChars = 0;
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int lineCurrent = styler.GetLine(startPos);
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int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
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int levelCurrent = levelPrev;
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char chNext = static_cast<char>(tolower(styler[startPos]));
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bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
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int styleNext = styler.StyleAt(startPos);
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char s[10];
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for (unsigned int i = startPos; i < lengthDoc; i++) {
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char ch = static_cast<char>(tolower(chNext));
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chNext = static_cast<char>(tolower(styler.SafeGetCharAt(i + 1)));
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int style = styleNext;
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styleNext = styler.StyleAt(i + 1);
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bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
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if (style == SCE_AVE_WORD) {
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if (ch == 't' || ch == 'f' || ch == 'w' || ch == 'e') {
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for (unsigned int j = 0; j < 6; j++) {
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if (!iswordchar(styler[i + j])) {
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break;
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}
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s[j] = static_cast<char>(tolower(styler[i + j]));
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s[j + 1] = '\0';
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}
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if ((strcmp(s, "then") == 0) || (strcmp(s, "for") == 0) || (strcmp(s, "while") == 0)) {
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levelCurrent++;
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}
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if ((strcmp(s, "end") == 0) || (strcmp(s, "elseif") == 0)) {
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// Normally "elseif" and "then" will be on the same line and will cancel
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// each other out. // As implemented, this does not support fold.at.else.
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levelCurrent--;
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}
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}
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} else if (style == SCE_AVE_OPERATOR) {
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if (ch == '{' || ch == '(') {
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levelCurrent++;
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} else if (ch == '}' || ch == ')') {
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levelCurrent--;
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}
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}
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if (atEOL) {
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int lev = levelPrev;
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if (visibleChars == 0 && foldCompact) {
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lev |= SC_FOLDLEVELWHITEFLAG;
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}
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if ((levelCurrent > levelPrev) && (visibleChars > 0)) {
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lev |= SC_FOLDLEVELHEADERFLAG;
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}
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if (lev != styler.LevelAt(lineCurrent)) {
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styler.SetLevel(lineCurrent, lev);
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}
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lineCurrent++;
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levelPrev = levelCurrent;
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visibleChars = 0;
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}
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if (!isspacechar(ch)) {
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visibleChars++;
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}
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}
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// Fill in the real level of the next line, keeping the current flags as they will be filled in later
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int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
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styler.SetLevel(lineCurrent, levelPrev | flagsNext);
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}
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LexerModule lmAVE(SCLEX_AVE, ColouriseAveDoc, "ave", FoldAveDoc);
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