notepad-plus-plus/lexilla/lexers/LexSML.cxx

230 lines
5.8 KiB
C++

// Scintilla source code edit control
/** @file LexSML.cxx
** Lexer for SML.
**/
// Copyright 2009 by James Moffatt and Yuzhou Xin
// Modified from LexCaml.cxx by Robert Roessler <robertr@rftp.com> Copyright 2005
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include <string>
#include <string_view>
#include "ILexer.h"
#include "Scintilla.h"
#include "SciLexer.h"
#include "WordList.h"
#include "LexAccessor.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "CharacterSet.h"
#include "LexerModule.h"
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wcomma"
#endif
inline int issml(int c) {return isalnum(c) || c == '_';}
inline int issmlf(int c) {return isalpha(c) || c == '_';}
inline int issmld(int c) {return isdigit(c) || c == '_';}
using namespace Lexilla;
static void ColouriseSMLDoc(
Sci_PositionU startPos, Sci_Position length,
int initStyle,
WordList *keywordlists[],
Accessor &styler)
{
StyleContext sc(startPos, length, initStyle, styler);
int nesting = 0;
if (sc.state < SCE_SML_STRING)
sc.state = SCE_SML_DEFAULT;
if (sc.state >= SCE_SML_COMMENT)
nesting = (sc.state & 0x0f) - SCE_SML_COMMENT;
Sci_PositionU chToken = 0;
int chBase = 0, chLit = 0;
WordList& keywords = *keywordlists[0];
WordList& keywords2 = *keywordlists[1];
WordList& keywords3 = *keywordlists[2];
const int useMagic = styler.GetPropertyInt("lexer.caml.magic", 0);
while (sc.More()) {
int state2 = -1;
Sci_Position chColor = sc.currentPos - 1;
bool advance = true;
switch (sc.state & 0x0f) {
case SCE_SML_DEFAULT:
chToken = sc.currentPos;
if (issmlf(sc.ch))
state2 = SCE_SML_IDENTIFIER;
else if (sc.Match('`') && issmlf(sc.chNext))
state2 = SCE_SML_TAGNAME;
else if (sc.Match('#')&&isdigit(sc.chNext))
state2 = SCE_SML_LINENUM;
else if (sc.Match('#','\"')){
state2 = SCE_SML_CHAR,chLit = 0;
sc.Forward();
}
else if (isdigit(sc.ch)) {
state2 = SCE_SML_NUMBER, chBase = 10;
if (sc.Match('0') && strchr("xX", sc.chNext))
chBase = 16, sc.Forward();}
else if (sc.Match('\"')&&sc.chPrev!='#')
state2 = SCE_SML_STRING;
else if (sc.Match('(', '*')){
state2 = SCE_SML_COMMENT,
sc.ch = ' ',
sc.Forward();}
else if (strchr("!~"
"=<>@^+-*/"
"()[];,:.#", sc.ch))
state2 = SCE_SML_OPERATOR;
break;
case SCE_SML_IDENTIFIER:
if (!(issml(sc.ch) || sc.Match('\''))) {
const Sci_Position n = sc.currentPos - chToken;
if (n < 24) {
char t[24];
for (Sci_Position i = -n; i < 0; i++)
t[n + i] = static_cast<char>(sc.GetRelative(i));
t[n] = '\0';
if ((n == 1 && sc.chPrev == '_') || keywords.InList(t))
sc.ChangeState(SCE_SML_KEYWORD);
else if (keywords2.InList(t))
sc.ChangeState(SCE_SML_KEYWORD2);
else if (keywords3.InList(t))
sc.ChangeState(SCE_SML_KEYWORD3);
}
state2 = SCE_SML_DEFAULT, advance = false;
}
break;
case SCE_SML_TAGNAME:
if (!(issml(sc.ch) || sc.Match('\'')))
state2 = SCE_SML_DEFAULT, advance = false;
break;
case SCE_SML_LINENUM:
if (!isdigit(sc.ch))
state2 = SCE_SML_DEFAULT, advance = false;
break;
case SCE_SML_OPERATOR: {
const char* o = 0;
if (issml(sc.ch) || isspace(sc.ch)
|| (o = strchr(")]};,\'\"`#", sc.ch),o)
|| !strchr("!$%&*+-./:<=>?@^|~", sc.ch)) {
if (o && strchr(")]};,", sc.ch)) {
if ((sc.Match(')') && sc.chPrev == '(')
|| (sc.Match(']') && sc.chPrev == '['))
sc.ChangeState(SCE_SML_KEYWORD);
chColor++;
} else
advance = false;
state2 = SCE_SML_DEFAULT;
}
break;
}
case SCE_SML_NUMBER:
if (issmld(sc.ch) || IsADigit(sc.ch, chBase))
break;
if ((sc.Match('l') || sc.Match('L') || sc.Match('n'))
&& (issmld(sc.chPrev) || IsADigit(sc.chPrev, chBase)))
break;
if (chBase == 10) {
if (sc.Match('.') && issmld(sc.chPrev))
break;
if ((sc.Match('e') || sc.Match('E'))
&& (issmld(sc.chPrev) || sc.chPrev == '.'))
break;
if ((sc.Match('+') || sc.Match('-'))
&& (sc.chPrev == 'e' || sc.chPrev == 'E'))
break;
}
state2 = SCE_SML_DEFAULT, advance = false;
break;
case SCE_SML_CHAR:
if (sc.Match('\\')) {
chLit = 1;
if (sc.chPrev == '\\')
sc.ch = ' ';
} else if ((sc.Match('\"') && sc.chPrev != '\\') || sc.atLineEnd) {
state2 = SCE_SML_DEFAULT;
chLit = 1;
if (sc.Match('\"'))
chColor++;
else
sc.ChangeState(SCE_SML_IDENTIFIER);
} else if (chLit < 1 && sc.currentPos - chToken >= 3)
sc.ChangeState(SCE_SML_IDENTIFIER), advance = false;
break;
case SCE_SML_STRING:
if (sc.Match('\\') && sc.chPrev == '\\')
sc.ch = ' ';
else if (sc.Match('\"') && sc.chPrev != '\\')
state2 = SCE_SML_DEFAULT, chColor++;
break;
case SCE_SML_COMMENT:
case SCE_SML_COMMENT1:
case SCE_SML_COMMENT2:
case SCE_SML_COMMENT3:
if (sc.Match('(', '*'))
state2 = sc.state + 1, chToken = sc.currentPos,
sc.ch = ' ',
sc.Forward(), nesting++;
else if (sc.Match(')') && sc.chPrev == '*') {
if (nesting)
state2 = (sc.state & 0x0f) - 1, chToken = 0, nesting--;
else
state2 = SCE_SML_DEFAULT;
chColor++;
} else if (useMagic && sc.currentPos - chToken == 4
&& sc.Match('c') && sc.chPrev == 'r' && sc.GetRelative(-2) == '@')
sc.state |= 0x10;
break;
}
if (state2 >= 0)
styler.ColourTo(chColor, sc.state), sc.ChangeState(state2);
if (advance)
sc.Forward();
}
sc.Complete();
}
static void FoldSMLDoc(
Sci_PositionU, Sci_Position,
int,
WordList *[],
Accessor &)
{
}
static const char * const SMLWordListDesc[] = {
"Keywords",
"Keywords2",
"Keywords3",
0
};
LexerModule lmSML(SCLEX_SML, ColouriseSMLDoc, "SML", FoldSMLDoc, SMLWordListDesc);