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| author | nyamatongwe <unknown> | 2010-07-13 21:16:48 +1000 | 
|---|---|---|
| committer | nyamatongwe <unknown> | 2010-07-13 21:16:48 +1000 | 
| commit | fd7c21165bbc5200aa24ef89560a8bb40fd37255 (patch) | |
| tree | b5cdec307f1b412f0527eb826a14b806b58cf006 /src/LexGAP.cxx | |
| parent | d47313970ebf3736afffec781f2f9030fa3c8e1a (diff) | |
| download | scintilla-mirror-fd7c21165bbc5200aa24ef89560a8bb40fd37255.tar.gz | |
Moved lexers into lexers directory.
Diffstat (limited to 'src/LexGAP.cxx')
| -rw-r--r-- | src/LexGAP.cxx | 263 | 
1 files changed, 0 insertions, 263 deletions
| diff --git a/src/LexGAP.cxx b/src/LexGAP.cxx deleted file mode 100644 index fb6e739bd..000000000 --- a/src/LexGAP.cxx +++ /dev/null @@ -1,263 +0,0 @@ -// Scintilla source code edit control -/** @file LexGAP.cxx - ** Lexer for the GAP language. (The GAP System for Computational Discrete Algebra) - ** http://www.gap-system.org - **/ -// Copyright 2007 by Istvan Szollosi ( szteven <at> gmail <dot> com ) -// 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 "Platform.h" - -#include "PropSet.h" -#include "Accessor.h" -#include "StyleContext.h" -#include "KeyWords.h" -#include "Scintilla.h" -#include "SciLexer.h" - -#ifdef SCI_NAMESPACE -using namespace Scintilla; -#endif - -static inline bool IsGAPOperator(char ch) { -	if (isascii(ch) && isalnum(ch)) return false; -	if (ch == '+' || ch == '-' || ch == '*' || ch == '/' || -		ch == '^' || ch == ',' || ch == '!' || ch == '.' || -		ch == '=' || ch == '<' || ch == '>' || ch == '(' || -		ch == ')' || ch == ';' || ch == '[' || ch == ']' || -		ch == '{' || ch == '}' || ch == ':' ) -		return true; -	return false; -} - -static void GetRange(unsigned int start, unsigned int end, Accessor &styler, char *s, unsigned int len) { -	unsigned int i = 0; -	while ((i < end - start + 1) && (i < len-1)) { -		s[i] = static_cast<char>(styler[start + i]); -		i++; -	} -	s[i] = '\0'; -} - -static void ColouriseGAPDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[], Accessor &styler) { - -	WordList &keywords1 = *keywordlists[0]; -	WordList &keywords2 = *keywordlists[1]; -	WordList &keywords3 = *keywordlists[2]; -	WordList &keywords4 = *keywordlists[3]; - -	// Do not leak onto next line -	if (initStyle == SCE_GAP_STRINGEOL) initStyle = SCE_GAP_DEFAULT; - -	StyleContext sc(startPos, length, initStyle, styler); - -	for (; sc.More(); sc.Forward()) { - -		// Prevent SCE_GAP_STRINGEOL from leaking back to previous line -		if ( sc.atLineStart ) { -			if (sc.state == SCE_GAP_STRING) sc.SetState(SCE_GAP_STRING); -			if (sc.state == SCE_GAP_CHAR) sc.SetState(SCE_GAP_CHAR); -		} - -		// Handle line continuation generically -		if (sc.ch == '\\' ) { -			if (sc.chNext == '\n' || sc.chNext == '\r') { -				sc.Forward(); -				if (sc.ch == '\r' && sc.chNext == '\n') { -					sc.Forward(); -				} -				continue; -			} -		} - -		// Determine if the current state should terminate -		switch (sc.state) { -			case SCE_GAP_OPERATOR : -				sc.SetState(SCE_GAP_DEFAULT); -				break; - -			case SCE_GAP_NUMBER : -				if (!IsADigit(sc.ch)) { -					if (sc.ch == '\\') { -						if (!sc.atLineEnd) { -							if (!IsADigit(sc.chNext)) { -								sc.Forward(); -								sc.ChangeState(SCE_GAP_IDENTIFIER); -							} -						} -					} else if (isalpha(sc.ch) || sc.ch == '_') { -						sc.ChangeState(SCE_GAP_IDENTIFIER); -					} -					else sc.SetState(SCE_GAP_DEFAULT); -				} -				break; - -			case SCE_GAP_IDENTIFIER : -				if (!(iswordstart(static_cast<char>(sc.ch)) || sc.ch == '$')) { -					if (sc.ch == '\\') sc.Forward(); -					else { -						char s[1000]; -						sc.GetCurrent(s, sizeof(s)); -						if (keywords1.InList(s)) { -							sc.ChangeState(SCE_GAP_KEYWORD); -						} else if (keywords2.InList(s)) { -							sc.ChangeState(SCE_GAP_KEYWORD2); -						} else if (keywords3.InList(s)) { -							sc.ChangeState(SCE_GAP_KEYWORD3); -						} else if (keywords4.InList(s)) { -							sc.ChangeState(SCE_GAP_KEYWORD4); -						} -						sc.SetState(SCE_GAP_DEFAULT); -					} -				} -				break; - -			case SCE_GAP_COMMENT : -				if (sc.atLineEnd) { -					sc.SetState(SCE_GAP_DEFAULT); -				} -				break; - -			case SCE_GAP_STRING: -				if (sc.atLineEnd) { -					sc.ChangeState(SCE_GAP_STRINGEOL); -				} else if (sc.ch == '\\') { -					if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') { -						sc.Forward(); -					} -				} else if (sc.ch == '\"') { -					sc.ForwardSetState(SCE_GAP_DEFAULT); -				} -				break; - -			case SCE_GAP_CHAR: -				if (sc.atLineEnd) { -					sc.ChangeState(SCE_GAP_STRINGEOL); -				} else if (sc.ch == '\\') { -					if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') { -						sc.Forward(); -					} -				} else if (sc.ch == '\'') { -					sc.ForwardSetState(SCE_GAP_DEFAULT); -				} -				break; - -			case SCE_GAP_STRINGEOL: -				if (sc.atLineStart) { -					sc.SetState(SCE_GAP_DEFAULT); -				} -				break; -		} - -		// Determine if a new state should be entered -		if (sc.state == SCE_GAP_DEFAULT) { -			if (IsGAPOperator(static_cast<char>(sc.ch))) { -				sc.SetState(SCE_GAP_OPERATOR); -			} -			else if (IsADigit(sc.ch)) { -				sc.SetState(SCE_GAP_NUMBER); -			} else if (isalpha(sc.ch) || sc.ch == '_' || sc.ch == '\\' || sc.ch == '$' || sc.ch == '~') { -				sc.SetState(SCE_GAP_IDENTIFIER); -				if (sc.ch == '\\') sc.Forward(); -			} else if (sc.ch == '#') { -				sc.SetState(SCE_GAP_COMMENT); -			} else if (sc.ch == '\"') { -				sc.SetState(SCE_GAP_STRING); -			} else if (sc.ch == '\'') { -				sc.SetState(SCE_GAP_CHAR); -			} -		} - -	} -	sc.Complete(); -} - -static int ClassifyFoldPointGAP(const char* s) { -	int level = 0; -	if (strcmp(s, "function") == 0 || -		strcmp(s, "do") == 0 || -		strcmp(s, "if") == 0 || -		strcmp(s, "repeat") == 0 ) { -		level = 1; -	} else if (strcmp(s, "end") == 0 || -			strcmp(s, "od") == 0 || -			strcmp(s, "fi") == 0 || -			strcmp(s, "until") == 0 ) { -		level = -1; -	} -	return level; -} - -static void FoldGAPDoc( unsigned int startPos, int length, int initStyle,   WordList** , Accessor &styler) { -	unsigned int endPos = startPos + length; -	int visibleChars = 0; -	int lineCurrent = styler.GetLine(startPos); -	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK; -	int levelCurrent = levelPrev; -	char chNext = styler[startPos]; -	int styleNext = styler.StyleAt(startPos); -	int style = initStyle; - -	int lastStart = 0; - -	for (unsigned int i = startPos; i < endPos; i++) { -		char ch = chNext; -		chNext = styler.SafeGetCharAt(i + 1); -		int stylePrev = style; -		style = styleNext; -		styleNext = styler.StyleAt(i + 1); -		bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n'); - -		if (stylePrev != SCE_GAP_KEYWORD && style == SCE_GAP_KEYWORD) { -			// Store last word start point. -			lastStart = i; -		} - -		if (stylePrev == SCE_GAP_KEYWORD) { -			if(iswordchar(ch) && !iswordchar(chNext)) { -				char s[100]; -				GetRange(lastStart, i, styler, s, sizeof(s)); -				levelCurrent += ClassifyFoldPointGAP(s); -			} -		} - -		if (atEOL) { -			int lev = levelPrev; -			if ((levelCurrent > levelPrev) && (visibleChars > 0)) -				lev |= SC_FOLDLEVELHEADERFLAG; -			if (lev != styler.LevelAt(lineCurrent)) { -				styler.SetLevel(lineCurrent, lev); -			} -			lineCurrent++; -			levelPrev = levelCurrent; -			visibleChars = 0; -		} - -		if (!isspacechar(ch)) -			visibleChars++; -	} - -	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK; -	styler.SetLevel(lineCurrent, levelPrev | flagsNext); -} - -static const char * const GAPWordListDesc[] = { -	"Keywords 1", -	"Keywords 2", -	"Keywords 3 (unused)", -	"Keywords 4 (unused)", -	0 -}; - -LexerModule lmGAP( -   SCLEX_GAP, -   ColouriseGAPDoc, -   "gap", -   FoldGAPDoc, -   GAPWordListDesc); | 
