224 lines
5.6 KiB
C++
224 lines
5.6 KiB
C++
// Scintilla source code edit control
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/** @file LexSML.cxx
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** Lexer for SML.
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**/
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// Copyright 2009 by James Moffatt and Yuzhou Xin
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// Modified from LexCaml.cxx by Robert Roessler <robertr@rftp.com> Copyright 2005
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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 "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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inline int issml(int c) {return isalnum(c) || c == '_';}
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inline int issmlf(int c) {return isalpha(c) || c == '_';}
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inline int issmld(int c) {return isdigit(c) || c == '_';}
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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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void ColouriseSMLDoc(
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unsigned int startPos, int length,
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int initStyle,
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WordList *keywordlists[],
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Accessor &styler)
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{
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StyleContext sc(startPos, length, initStyle, styler);
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int nesting = 0;
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if (sc.state < SCE_SML_STRING)
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sc.state = SCE_SML_DEFAULT;
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if (sc.state >= SCE_SML_COMMENT)
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nesting = (sc.state & 0x0f) - SCE_SML_COMMENT;
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int chBase = 0, chToken = 0, chLit = 0;
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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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const int useMagic = styler.GetPropertyInt("lexer.caml.magic", 0);
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while (sc.More()) {
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int state2 = -1;
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int chColor = sc.currentPos - 1;
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bool advance = true;
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switch (sc.state & 0x0f) {
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case SCE_SML_DEFAULT:
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chToken = sc.currentPos;
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if (issmlf(sc.ch))
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state2 = SCE_SML_IDENTIFIER;
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else if (sc.Match('`') && issmlf(sc.chNext))
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state2 = SCE_SML_TAGNAME;
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else if (sc.Match('#')&&isdigit(sc.chNext))
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state2 = SCE_SML_LINENUM;
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else if (sc.Match('#','\"')){
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state2 = SCE_SML_CHAR,chLit = 0;
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sc.Forward();
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}
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else if (isdigit(sc.ch)) {
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state2 = SCE_SML_NUMBER, chBase = 10;
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if (sc.Match('0') && strchr("xX", sc.chNext))
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chBase = 16, sc.Forward();}
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else if (sc.Match('\"')&&sc.chPrev!='#')
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state2 = SCE_SML_STRING;
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else if (sc.Match('(', '*')){
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state2 = SCE_SML_COMMENT,
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sc.ch = ' ',
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sc.Forward();}
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else if (strchr("!~"
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"=<>@^+-*/"
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"()[];,:.#", sc.ch))
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state2 = SCE_SML_OPERATOR;
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break;
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case SCE_SML_IDENTIFIER:
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if (!(issml(sc.ch) || sc.Match('\''))) {
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const int n = sc.currentPos - chToken;
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if (n < 24) {
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char t[24];
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for (int i = -n; i < 0; i++)
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t[n + i] = static_cast<char>(sc.GetRelative(i));
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t[n] = '\0';
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if ((n == 1 && sc.chPrev == '_') || keywords.InList(t))
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sc.ChangeState(SCE_SML_KEYWORD);
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else if (keywords2.InList(t))
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sc.ChangeState(SCE_SML_KEYWORD2);
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else if (keywords3.InList(t))
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sc.ChangeState(SCE_SML_KEYWORD3);
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}
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state2 = SCE_SML_DEFAULT, advance = false;
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}
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break;
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case SCE_SML_TAGNAME:
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if (!(issml(sc.ch) || sc.Match('\'')))
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state2 = SCE_SML_DEFAULT, advance = false;
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break;
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case SCE_SML_LINENUM:
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if (!isdigit(sc.ch))
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state2 = SCE_SML_DEFAULT, advance = false;
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break;
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case SCE_SML_OPERATOR: {
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const char* o = 0;
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if (issml(sc.ch) || isspace(sc.ch)
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|| (o = strchr(")]};,\'\"`#", sc.ch),o)
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|| !strchr("!$%&*+-./:<=>?@^|~", sc.ch)) {
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if (o && strchr(")]};,", sc.ch)) {
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if ((sc.Match(')') && sc.chPrev == '(')
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|| (sc.Match(']') && sc.chPrev == '['))
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sc.ChangeState(SCE_SML_KEYWORD);
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chColor++;
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} else
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advance = false;
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state2 = SCE_SML_DEFAULT;
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}
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break;
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}
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case SCE_SML_NUMBER:
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if (issmld(sc.ch) || IsADigit(sc.ch, chBase))
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break;
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if ((sc.Match('l') || sc.Match('L') || sc.Match('n'))
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&& (issmld(sc.chPrev) || IsADigit(sc.chPrev, chBase)))
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break;
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if (chBase == 10) {
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if (sc.Match('.') && issmld(sc.chPrev))
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break;
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if ((sc.Match('e') || sc.Match('E'))
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&& (issmld(sc.chPrev) || sc.chPrev == '.'))
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break;
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if ((sc.Match('+') || sc.Match('-'))
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&& (sc.chPrev == 'e' || sc.chPrev == 'E'))
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break;
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}
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state2 = SCE_SML_DEFAULT, advance = false;
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break;
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case SCE_SML_CHAR:
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if (sc.Match('\\')) {
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chLit = 1;
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if (sc.chPrev == '\\')
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sc.ch = ' ';
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} else if ((sc.Match('\"') && sc.chPrev != '\\') || sc.atLineEnd) {
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state2 = SCE_SML_DEFAULT;
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chLit = 1;
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if (sc.Match('\"'))
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chColor++;
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else
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sc.ChangeState(SCE_SML_IDENTIFIER);
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} else if (chLit < 1 && sc.currentPos - chToken >= 3)
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sc.ChangeState(SCE_SML_IDENTIFIER), advance = false;
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break;
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case SCE_SML_STRING:
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if (sc.Match('\\') && sc.chPrev == '\\')
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sc.ch = ' ';
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else if (sc.Match('\"') && sc.chPrev != '\\')
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state2 = SCE_SML_DEFAULT, chColor++;
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break;
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case SCE_SML_COMMENT:
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case SCE_SML_COMMENT1:
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case SCE_SML_COMMENT2:
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case SCE_SML_COMMENT3:
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if (sc.Match('(', '*'))
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state2 = sc.state + 1, chToken = sc.currentPos,
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sc.ch = ' ',
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sc.Forward(), nesting++;
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else if (sc.Match(')') && sc.chPrev == '*') {
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if (nesting)
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state2 = (sc.state & 0x0f) - 1, chToken = 0, nesting--;
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else
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state2 = SCE_SML_DEFAULT;
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chColor++;
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} else if (useMagic && sc.currentPos - chToken == 4
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&& sc.Match('c') && sc.chPrev == 'r' && sc.GetRelative(-2) == '@')
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sc.state |= 0x10;
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break;
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}
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if (state2 >= 0)
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styler.ColourTo(chColor, sc.state), sc.ChangeState(state2);
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if (advance)
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sc.Forward();
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}
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sc.Complete();
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}
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void FoldSMLDoc(
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unsigned int, int,
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int,
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WordList *[],
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Accessor &)
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{
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}
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static const char * const SMLWordListDesc[] = {
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"Keywords",
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"Keywords2",
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"Keywords3",
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0
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};
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LexerModule lmSML(SCLEX_SML, ColouriseSMLDoc, "SML", FoldSMLDoc, SMLWordListDesc);
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