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