You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
286 lines
8.4 KiB
286 lines
8.4 KiB
// Scintilla source code edit control
|
|
/** @file LexLisp.cxx
|
|
** Lexer for Lisp.
|
|
** Written by Alexey Yutkin.
|
|
**/
|
|
// Copyright 1998-2001 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 <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
|
|
#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"
|
|
|
|
#ifdef SCI_NAMESPACE
|
|
using namespace Scintilla;
|
|
#endif
|
|
|
|
#define SCE_LISP_CHARACTER 29
|
|
#define SCE_LISP_MACRO 30
|
|
#define SCE_LISP_MACRO_DISPATCH 31
|
|
|
|
static inline bool isLispoperator(char ch) {
|
|
if (isascii(ch) && isalnum(ch))
|
|
return false;
|
|
if (ch == '\'' || ch == '`' || ch == '(' || ch == ')' || ch == '[' || ch == ']' || ch == '{' || ch == '}')
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static inline bool isLispwordstart(char ch) {
|
|
return isascii(ch) && ch != ';' && !isspacechar(ch) && !isLispoperator(ch) &&
|
|
ch != '\n' && ch != '\r' && ch != '\"';
|
|
}
|
|
|
|
|
|
static void classifyWordLisp(unsigned int start, unsigned int end, WordList &keywords, WordList &keywords_kw, Accessor &styler) {
|
|
assert(end >= start);
|
|
char s[100];
|
|
unsigned int i;
|
|
bool digit_flag = true;
|
|
for (i = 0; (i < end - start + 1) && (i < 99); i++) {
|
|
s[i] = styler[start + i];
|
|
s[i + 1] = '\0';
|
|
if (!isdigit(s[i]) && (s[i] != '.')) digit_flag = false;
|
|
}
|
|
char chAttr = SCE_LISP_IDENTIFIER;
|
|
|
|
if(digit_flag) chAttr = SCE_LISP_NUMBER;
|
|
else {
|
|
if (keywords.InList(s)) {
|
|
chAttr = SCE_LISP_KEYWORD;
|
|
} else if (keywords_kw.InList(s)) {
|
|
chAttr = SCE_LISP_KEYWORD_KW;
|
|
} else if ((s[0] == '*' && s[i-1] == '*') ||
|
|
(s[0] == '+' && s[i-1] == '+')) {
|
|
chAttr = SCE_LISP_SPECIAL;
|
|
}
|
|
}
|
|
styler.ColourTo(end, chAttr);
|
|
return;
|
|
}
|
|
|
|
|
|
static void ColouriseLispDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
|
|
Accessor &styler) {
|
|
|
|
WordList &keywords = *keywordlists[0];
|
|
WordList &keywords_kw = *keywordlists[1];
|
|
|
|
styler.StartAt(startPos);
|
|
|
|
int state = initStyle, radix = -1;
|
|
char chNext = styler[startPos];
|
|
unsigned int lengthDoc = startPos + length;
|
|
styler.StartSegment(startPos);
|
|
for (unsigned int i = startPos; i < lengthDoc; i++) {
|
|
char ch = chNext;
|
|
chNext = styler.SafeGetCharAt(i + 1);
|
|
|
|
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
|
|
|
|
if (styler.IsLeadByte(ch)) {
|
|
chNext = styler.SafeGetCharAt(i + 2);
|
|
i += 1;
|
|
continue;
|
|
}
|
|
|
|
if (state == SCE_LISP_DEFAULT) {
|
|
if (ch == '#') {
|
|
styler.ColourTo(i - 1, state);
|
|
radix = -1;
|
|
state = SCE_LISP_MACRO_DISPATCH;
|
|
} else if (ch == ':' && isLispwordstart(chNext)) {
|
|
styler.ColourTo(i - 1, state);
|
|
state = SCE_LISP_SYMBOL;
|
|
} else if (isLispwordstart(ch)) {
|
|
styler.ColourTo(i - 1, state);
|
|
state = SCE_LISP_IDENTIFIER;
|
|
}
|
|
else if (ch == ';') {
|
|
styler.ColourTo(i - 1, state);
|
|
state = SCE_LISP_COMMENT;
|
|
}
|
|
else if (isLispoperator(ch) || ch=='\'') {
|
|
styler.ColourTo(i - 1, state);
|
|
styler.ColourTo(i, SCE_LISP_OPERATOR);
|
|
if (ch=='\'' && isLispwordstart(chNext)) {
|
|
state = SCE_LISP_SYMBOL;
|
|
}
|
|
}
|
|
else if (ch == '\"') {
|
|
styler.ColourTo(i - 1, state);
|
|
state = SCE_LISP_STRING;
|
|
}
|
|
} else if (state == SCE_LISP_IDENTIFIER || state == SCE_LISP_SYMBOL) {
|
|
if (!isLispwordstart(ch)) {
|
|
if (state == SCE_LISP_IDENTIFIER) {
|
|
classifyWordLisp(styler.GetStartSegment(), i - 1, keywords, keywords_kw, styler);
|
|
} else {
|
|
styler.ColourTo(i - 1, state);
|
|
}
|
|
state = SCE_LISP_DEFAULT;
|
|
} /*else*/
|
|
if (isLispoperator(ch) || ch=='\'') {
|
|
styler.ColourTo(i - 1, state);
|
|
styler.ColourTo(i, SCE_LISP_OPERATOR);
|
|
if (ch=='\'' && isLispwordstart(chNext)) {
|
|
state = SCE_LISP_SYMBOL;
|
|
}
|
|
}
|
|
} else if (state == SCE_LISP_MACRO_DISPATCH) {
|
|
if (!(isascii(ch) && isdigit(ch))) {
|
|
if (ch != 'r' && ch != 'R' && (i - styler.GetStartSegment()) > 1) {
|
|
state = SCE_LISP_DEFAULT;
|
|
} else {
|
|
switch (ch) {
|
|
case '|': state = SCE_LISP_MULTI_COMMENT; break;
|
|
case 'o':
|
|
case 'O': radix = 8; state = SCE_LISP_MACRO; break;
|
|
case 'x':
|
|
case 'X': radix = 16; state = SCE_LISP_MACRO; break;
|
|
case 'b':
|
|
case 'B': radix = 2; state = SCE_LISP_MACRO; break;
|
|
case '\\': state = SCE_LISP_CHARACTER; break;
|
|
case ':':
|
|
case '-':
|
|
case '+': state = SCE_LISP_MACRO; break;
|
|
case '\'': if (isLispwordstart(chNext)) {
|
|
state = SCE_LISP_SPECIAL;
|
|
} else {
|
|
styler.ColourTo(i - 1, SCE_LISP_DEFAULT);
|
|
styler.ColourTo(i, SCE_LISP_OPERATOR);
|
|
state = SCE_LISP_DEFAULT;
|
|
}
|
|
break;
|
|
default: if (isLispoperator(ch)) {
|
|
styler.ColourTo(i - 1, SCE_LISP_DEFAULT);
|
|
styler.ColourTo(i, SCE_LISP_OPERATOR);
|
|
}
|
|
state = SCE_LISP_DEFAULT;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else if (state == SCE_LISP_MACRO) {
|
|
if (isLispwordstart(ch) && (radix == -1 || IsADigit(ch, radix))) {
|
|
state = SCE_LISP_SPECIAL;
|
|
} else {
|
|
state = SCE_LISP_DEFAULT;
|
|
}
|
|
} else if (state == SCE_LISP_CHARACTER) {
|
|
if (isLispoperator(ch)) {
|
|
styler.ColourTo(i, SCE_LISP_SPECIAL);
|
|
state = SCE_LISP_DEFAULT;
|
|
} else if (isLispwordstart(ch)) {
|
|
styler.ColourTo(i, SCE_LISP_SPECIAL);
|
|
state = SCE_LISP_SPECIAL;
|
|
} else {
|
|
state = SCE_LISP_DEFAULT;
|
|
}
|
|
} else if (state == SCE_LISP_SPECIAL) {
|
|
if (!isLispwordstart(ch) || (radix != -1 && !IsADigit(ch, radix))) {
|
|
styler.ColourTo(i - 1, state);
|
|
state = SCE_LISP_DEFAULT;
|
|
}
|
|
if (isLispoperator(ch) || ch=='\'') {
|
|
styler.ColourTo(i - 1, state);
|
|
styler.ColourTo(i, SCE_LISP_OPERATOR);
|
|
if (ch=='\'' && isLispwordstart(chNext)) {
|
|
state = SCE_LISP_SYMBOL;
|
|
}
|
|
}
|
|
} else {
|
|
if (state == SCE_LISP_COMMENT) {
|
|
if (atEOL) {
|
|
styler.ColourTo(i - 1, state);
|
|
state = SCE_LISP_DEFAULT;
|
|
}
|
|
} else if (state == SCE_LISP_MULTI_COMMENT) {
|
|
if (ch == '|' && chNext == '#') {
|
|
i++;
|
|
chNext = styler.SafeGetCharAt(i + 1);
|
|
styler.ColourTo(i, state);
|
|
state = SCE_LISP_DEFAULT;
|
|
}
|
|
} else if (state == SCE_LISP_STRING) {
|
|
if (ch == '\\') {
|
|
if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
|
|
i++;
|
|
chNext = styler.SafeGetCharAt(i + 1);
|
|
}
|
|
} else if (ch == '\"') {
|
|
styler.ColourTo(i, state);
|
|
state = SCE_LISP_DEFAULT;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
styler.ColourTo(lengthDoc - 1, state);
|
|
}
|
|
|
|
static void FoldLispDoc(unsigned int startPos, int length, int /* initStyle */, WordList *[],
|
|
Accessor &styler) {
|
|
unsigned int lengthDoc = 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);
|
|
for (unsigned int i = startPos; i < lengthDoc; i++) {
|
|
char ch = chNext;
|
|
chNext = styler.SafeGetCharAt(i + 1);
|
|
int style = styleNext;
|
|
styleNext = styler.StyleAt(i + 1);
|
|
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
|
|
if (style == SCE_LISP_OPERATOR) {
|
|
if (ch == '(' || ch == '[' || ch == '{') {
|
|
levelCurrent++;
|
|
} else if (ch == ')' || ch == ']' || ch == '}') {
|
|
levelCurrent--;
|
|
}
|
|
}
|
|
if (atEOL) {
|
|
int lev = levelPrev;
|
|
if (visibleChars == 0)
|
|
lev |= SC_FOLDLEVELWHITEFLAG;
|
|
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++;
|
|
}
|
|
// Fill in the real level of the next line, keeping the current flags as they will be filled in later
|
|
int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
|
|
styler.SetLevel(lineCurrent, levelPrev | flagsNext);
|
|
}
|
|
|
|
static const char * const lispWordListDesc[] = {
|
|
"Functions and special operators",
|
|
"Keywords",
|
|
0
|
|
};
|
|
|
|
LexerModule lmLISP(SCLEX_LISP, ColouriseLispDoc, "lisp", FoldLispDoc, lispWordListDesc);
|