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225 lines
6.7 KiB
225 lines
6.7 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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