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