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IDE-569 Syntax highlight KEL #340
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,173 @@ | ||
| // Scintilla source code edit control | ||
| /** @file LexGENERAL.cxx | ||
| ** Lexer for general color preferences. Not an attribute type. | ||
| **/ | ||
| // Copyright 1998-2005 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 <stdio.h> | ||
| #include <stdarg.h> | ||
| #include <assert.h> | ||
|
|
||
| #ifdef _MSC_VER | ||
| #pragma warning(disable: 4786) | ||
| #endif | ||
| #ifdef __BORLANDC__ | ||
| // Borland C++ displays warnings in vector header without this | ||
| #pragma option -w-ccc -w-rch | ||
| #endif | ||
|
|
||
| #include <string> | ||
| #include <vector> | ||
| #include <map> | ||
| #include <algorithm> | ||
|
|
||
| #include "ILexer.h" | ||
| #include "Scintilla.h" | ||
| #include "SciLexer.h" | ||
|
|
||
| #include "PropSetSimple.h" | ||
| #include "WordList.h" | ||
| #include "LexAccessor.h" | ||
| #include "Accessor.h" | ||
| #include "StyleContext.h" | ||
| #include "CharacterSet.h" | ||
| #include "LexerModule.h" | ||
| #include "OptionSet.h" | ||
|
|
||
| #ifdef SCI_NAMESPACE | ||
| using namespace Scintilla; | ||
| #endif | ||
|
|
||
| // Preconditions: sc.currentPos points to a character after '+' or '-'. | ||
| // The test for pos reaching 0 should be redundant, | ||
| // and is in only for safety measures. | ||
| // Limitation: this code will give the incorrect answer for code like | ||
| // a = b+++/ptn/... | ||
| // Putting a space between the '++' post-inc operator and the '+' binary op | ||
| // fixes this, and is highly recommended for readability anyway. | ||
| static bool FollowsPostfixOperator(StyleContext &sc, Accessor &styler) { | ||
| int pos = (int) sc.currentPos; | ||
| while (--pos > 0) { | ||
| char ch = styler[pos]; | ||
| if (ch == '+' || ch == '-') { | ||
| return styler[pos - 1] == ch; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| static void strtrim(char* str) { | ||
| int start = 0; // number of leading spaces | ||
| char* buffer = str; | ||
| while (*str && (*str == ' ' || *str == '\r' || *str == '\n' || *str == '\t')) | ||
| { | ||
| *str++; | ||
| ++start; | ||
| } | ||
| while (*str++); // move to end of string | ||
| int end = str - buffer - 1; | ||
| while (end > 0 && (buffer[end - 1] == ' ' || buffer[end - 1] == '\n' || buffer[end - 1] == '\r' || buffer[end - 1] == '\t')) --end; // backup over trailing spaces | ||
| buffer[end] = 0; // remove trailing spaces | ||
| if (end <= start || start == 0) return; // exit if no leading spaces or string is now empty | ||
| str = buffer + start; | ||
| while ((*buffer++ = *str++)); // remove leading spaces: K&R | ||
| } | ||
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| static void ColouriseGENERALDocSensitive(unsigned int startPos, int length, int initStyle, WordList *keywordlists[], Accessor &styler) { | ||
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| WordList &headerList = *keywordlists[0]; | ||
| WordList &thorList = *keywordlists[1]; | ||
| WordList &hthorList = *keywordlists[2]; | ||
| WordList &roxieList = *keywordlists[3]; | ||
| WordList &localList = *keywordlists[4]; | ||
|
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| char s[1000]; | ||
| bool checkword = false; | ||
| int linetype = 0; | ||
|
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| StyleContext sc(startPos, length, initStyle, styler); | ||
| int line = 0; | ||
|
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||
| for (; sc.More(); sc.Forward()) { | ||
| sc.GetCurrentLowered(s, sizeof(s)); | ||
| strtrim(s); | ||
|
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| // Determine if the current state should terminate. | ||
| switch (sc.state) { | ||
| case SCE_GEN_HEADER: | ||
| if (sc.chPrev == ':') { | ||
| sc.ChangeState(SCE_GEN_DEFAULT); | ||
| sc.SetState(SCE_GEN_DELIMITER); | ||
| if (linetype == SCE_GEN_CARET) | ||
| sc.ForwardSetState(SCE_GEN_CARET); | ||
| else | ||
| sc.ForwardSetState(SCE_GEN_DEFAULT); | ||
| } | ||
| break; | ||
| case SCE_GEN_CARET: | ||
| case SCE_GEN_THOR_BACKGROUND: | ||
| case SCE_GEN_HTHOR_BACKGROUND: | ||
| case SCE_GEN_ROXIE_BACKGROUND: | ||
| case SCE_GEN_LOCAL_BACKGROUND: | ||
| if (sc.atLineEnd) | ||
| { | ||
| sc.SetState(SCE_GEN_DEFAULT); | ||
| } | ||
| break; | ||
| } | ||
|
|
||
| if (sc.state == SCE_GEN_DEFAULT) { | ||
| checkword = false; | ||
| if (headerList.InList(s)) { | ||
| if (stricmp(s, "caret") == 0) | ||
| { | ||
| sc.SetState(SCE_GEN_HEADER); | ||
| linetype = SCE_GEN_CARET; | ||
| } | ||
| else if (stricmp(s, "target") == 0) | ||
| { | ||
| sc.ChangeState(SCE_GEN_HEADER); | ||
| linetype = SCE_GEN_TARGET; | ||
| } | ||
| } | ||
| else { | ||
| if (thorList.InList(s)) { | ||
| sc.ChangeState(SCE_GEN_THOR_BACKGROUND); | ||
| sc.SetState(SCE_GEN_THOR_BACKGROUND); | ||
| } | ||
| else if (hthorList.InList(s)) { | ||
| sc.ChangeState(SCE_GEN_HTHOR_BACKGROUND); | ||
| sc.SetState(SCE_GEN_HTHOR_BACKGROUND); | ||
| } | ||
| else if (roxieList.InList(s)) { | ||
| sc.ChangeState(SCE_GEN_ROXIE_BACKGROUND); | ||
| sc.SetState(SCE_GEN_ROXIE_BACKGROUND); | ||
| } | ||
| else if (localList.InList(s)) { | ||
| sc.ChangeState(SCE_GEN_LOCAL_BACKGROUND); | ||
| sc.SetState(SCE_GEN_LOCAL_BACKGROUND); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| sc.Complete(); | ||
| } | ||
|
|
||
| static void FoldGENERALDoc(unsigned int startPos, int length, int initStyle, | ||
| WordList *[], Accessor &styler) { | ||
| } | ||
|
|
||
| static const char * const generalWordLists[] = { | ||
| "Headers", | ||
| "Thor", | ||
| "HThor", | ||
| "Roxie", | ||
| "Local", | ||
| 0, | ||
| }; | ||
|
|
||
| LexerModule lmGENERAL(SCLEX_GENERAL, ColouriseGENERALDocSensitive, "general", FoldGENERALDoc, generalWordLists); | ||
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What is the goal of the General lexer?
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The general lexer is for non-language related color selections. I tried coding the "general" color settings without the lexer. After a 1 day trip down that road without success and everything broken beyond repair and only getting worse, I decided the easiest way to implement the non-language specific color preferences was to create a "general" lexer. It solved that problem quite nicely.