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

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// Scintilla source code edit control
/** @file LexHollywood.cxx
** Lexer for Hollywood
** Written by Andreas Falkenhahn, based on the BlitzBasic/PureBasic/Lua lexers
** Thanks to Nicholai Benalal
** For more information on Hollywood, see http://www.hollywood-mal.com/
** Mail me (andreas <at> airsoftsoftwair <dot> de) for any bugs.
** This code is subject to the same license terms as the rest of the Scintilla project:
** 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 <map>
#include <functional>
#include "ILexer.h"
#include "Scintilla.h"
#include "SciLexer.h"
#include "WordList.h"
#include "LexAccessor.h"
#include "StyleContext.h"
#include "CharacterSet.h"
#include "LexerModule.h"
#include "OptionSet.h"
#include "DefaultLexer.h"
using namespace Scintilla;
using namespace Lexilla;
/* Bits:
* 1 - whitespace
* 2 - operator
* 4 - identifier
* 8 - decimal digit
* 16 - hex digit
* 32 - bin digit
* 64 - letter
*/
static int character_classification[128] =
{
0, // NUL ($0)
0, // SOH ($1)
0, // STX ($2)
0, // ETX ($3)
0, // EOT ($4)
0, // ENQ ($5)
0, // ACK ($6)
0, // BEL ($7)
0, // BS ($8)
1, // HT ($9)
1, // LF ($A)
0, // VT ($B)
0, // FF ($C)
1, // CR ($D)
0, // SO ($E)
0, // SI ($F)
0, // DLE ($10)
0, // DC1 ($11)
0, // DC2 ($12)
0, // DC3 ($13)
0, // DC4 ($14)
0, // NAK ($15)
0, // SYN ($16)
0, // ETB ($17)
0, // CAN ($18)
0, // EM ($19)
0, // SUB ($1A)
0, // ESC ($1B)
0, // FS ($1C)
0, // GS ($1D)
0, // RS ($1E)
0, // US ($1F)
1, // space ($20)
4, // ! ($21)
0, // " ($22)
0, // # ($23)
4, // $ ($24)
2, // % ($25)
2, // & ($26)
2, // ' ($27)
2, // ( ($28)
2, // ) ($29)
2, // * ($2A)
2, // + ($2B)
2, // , ($2C)
2, // - ($2D)
// NB: we treat "." as an identifier although it is also an operator and a decimal digit
// the reason why we treat it as an identifier is to support syntax highlighting for
// plugin commands which always use a "." in their names, e.g. pdf.OpenDocument();
// we handle the decimal digit case manually below so that 3.1415 and .123 is styled correctly
// the collateral damage of treating "." as an identifier is that "." is never styled
// SCE_HOLLYWOOD_OPERATOR
4, // . ($2E)
2, // / ($2F)
28, // 0 ($30)
28, // 1 ($31)
28, // 2 ($32)
28, // 3 ($33)
28, // 4 ($34)
28, // 5 ($35)
28, // 6 ($36)
28, // 7 ($37)
28, // 8 ($38)
28, // 9 ($39)
2, // : ($3A)
2, // ; ($3B)
2, // < ($3C)
2, // = ($3D)
2, // > ($3E)
2, // ? ($3F)
0, // @ ($40)
84, // A ($41)
84, // B ($42)
84, // C ($43)
84, // D ($44)
84, // E ($45)
84, // F ($46)
68, // G ($47)
68, // H ($48)
68, // I ($49)
68, // J ($4A)
68, // K ($4B)
68, // L ($4C)
68, // M ($4D)
68, // N ($4E)
68, // O ($4F)
68, // P ($50)
68, // Q ($51)
68, // R ($52)
68, // S ($53)
68, // T ($54)
68, // U ($55)
68, // V ($56)
68, // W ($57)
68, // X ($58)
68, // Y ($59)
68, // Z ($5A)
2, // [ ($5B)
2, // \ ($5C)
2, // ] ($5D)
2, // ^ ($5E)
68, // _ ($5F)
2, // ` ($60)
84, // a ($61)
84, // b ($62)
84, // c ($63)
84, // d ($64)
84, // e ($65)
84, // f ($66)
68, // g ($67)
68, // h ($68)
68, // i ($69)
68, // j ($6A)
68, // k ($6B)
68, // l ($6C)
68, // m ($6D)
68, // n ($6E)
68, // o ($6F)
68, // p ($70)
68, // q ($71)
68, // r ($72)
68, // s ($73)
68, // t ($74)
68, // u ($75)
68, // v ($76)
68, // w ($77)
68, // x ($78)
68, // y ($79)
68, // z ($7A)
2, // { ($7B)
2, // | ($7C)
2, // } ($7D)
2, // ~ ($7E)
0, // &#127; ($7F)
};
static bool IsSpace(int c) {
return c < 128 && (character_classification[c] & 1);
}
static bool IsOperator(int c) {
return c < 128 && (character_classification[c] & 2);
}
static bool IsIdentifier(int c) {
return c < 128 && (character_classification[c] & 4);
}
static bool IsDigit(int c) {
return c < 128 && (character_classification[c] & 8);
}
static bool IsHexDigit(int c) {
return c < 128 && (character_classification[c] & 16);
}
static int LowerCase(int c)
{
if (c >= 'A' && c <= 'Z')
return 'a' + c - 'A';
return c;
}
static int CheckHollywoodFoldPoint(char const *token) {
if (!strcmp(token, "function")) {
return 1;
}
if (!strcmp(token, "endfunction")) {
return -1;
}
return 0;
}
// An individual named option for use in an OptionSet
// Options used for LexerHollywood
struct OptionsHollywood {
bool fold;
bool foldCompact;
OptionsHollywood() {
fold = false;
foldCompact = false;
}
};
static const char * const hollywoodWordListDesc[] = {
"Hollywood keywords",
"Hollywood standard API functions",
"Hollywood plugin API functions",
"Hollywood plugin methods",
0
};
struct OptionSetHollywood : public OptionSet<OptionsHollywood> {
OptionSetHollywood(const char * const wordListDescriptions[]) {
DefineProperty("fold", &OptionsHollywood::fold);
DefineProperty("fold.compact", &OptionsHollywood::foldCompact);
DefineWordListSets(wordListDescriptions);
}
};
class LexerHollywood : public DefaultLexer {
int (*CheckFoldPoint)(char const *);
WordList keywordlists[4];
OptionsHollywood options;
OptionSetHollywood osHollywood;
public:
LexerHollywood(int (*CheckFoldPoint_)(char const *), const char * const wordListDescriptions[]) :
DefaultLexer("hollywood", SCLEX_HOLLYWOOD),
CheckFoldPoint(CheckFoldPoint_),
osHollywood(wordListDescriptions) {
}
virtual ~LexerHollywood() {
}
void SCI_METHOD Release() override {
delete this;
}
int SCI_METHOD Version() const override {
return lvRelease5;
}
const char * SCI_METHOD PropertyNames() override {
return osHollywood.PropertyNames();
}
int SCI_METHOD PropertyType(const char *name) override {
return osHollywood.PropertyType(name);
}
const char * SCI_METHOD DescribeProperty(const char *name) override {
return osHollywood.DescribeProperty(name);
}
Sci_Position SCI_METHOD PropertySet(const char *key, const char *val) override;
const char * SCI_METHOD PropertyGet(const char* key) override {
return osHollywood.PropertyGet(key);
}
const char * SCI_METHOD DescribeWordListSets() override {
return osHollywood.DescribeWordListSets();
}
Sci_Position SCI_METHOD WordListSet(int n, const char *wl) override;
void SCI_METHOD Lex(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess) override;
void SCI_METHOD Fold(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess) override;
void * SCI_METHOD PrivateCall(int, void *) override {
return 0;
}
static ILexer5 *LexerFactoryHollywood() {
return new LexerHollywood(CheckHollywoodFoldPoint, hollywoodWordListDesc);
}
};
Sci_Position SCI_METHOD LexerHollywood::PropertySet(const char *key, const char *val) {
if (osHollywood.PropertySet(&options, key, val)) {
return 0;
}
return -1;
}
Sci_Position SCI_METHOD LexerHollywood::WordListSet(int n, const char *wl) {
WordList *wordListN = 0;
switch (n) {
case 0:
wordListN = &keywordlists[0];
break;
case 1:
wordListN = &keywordlists[1];
break;
case 2:
wordListN = &keywordlists[2];
break;
case 3:
wordListN = &keywordlists[3];
break;
}
Sci_Position firstModification = -1;
if (wordListN) {
WordList wlNew;
wlNew.Set(wl);
if (*wordListN != wlNew) {
wordListN->Set(wl);
firstModification = 0;
}
}
return firstModification;
}
void SCI_METHOD LexerHollywood::Lex(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess) {
LexAccessor styler(pAccess);
styler.StartAt(startPos);
bool inString = false;
StyleContext sc(startPos, length, initStyle, styler);
// Can't use sc.More() here else we miss the last character
for (; ; sc.Forward())
{
if (sc.atLineStart) inString = false;
if (sc.ch == '\"' && sc.chPrev != '\\') inString = !inString;
if (sc.state == SCE_HOLLYWOOD_IDENTIFIER) {
if (!IsIdentifier(sc.ch)) {
char s[100];
int kstates[4] = {
SCE_HOLLYWOOD_KEYWORD,
SCE_HOLLYWOOD_STDAPI,
SCE_HOLLYWOOD_PLUGINAPI,
SCE_HOLLYWOOD_PLUGINMETHOD,
};
sc.GetCurrentLowered(s, sizeof(s));
for (int i = 0; i < 4; i++) {
if (keywordlists[i].InList(s)) {
sc.ChangeState(kstates[i]);
}
}
sc.SetState(SCE_HOLLYWOOD_DEFAULT);
}
} else if (sc.state == SCE_HOLLYWOOD_OPERATOR) {
// always reset to default on operators because otherwise
// comments won't be recognized in sequences like "+/* Hello*/"
// --> "+/*" would be recognized as a sequence of operators
// if (!IsOperator(sc.ch)) sc.SetState(SCE_HOLLYWOOD_DEFAULT);
sc.SetState(SCE_HOLLYWOOD_DEFAULT);
} else if (sc.state == SCE_HOLLYWOOD_PREPROCESSOR) {
if (!IsIdentifier(sc.ch))
sc.SetState(SCE_HOLLYWOOD_DEFAULT);
} else if (sc.state == SCE_HOLLYWOOD_CONSTANT) {
if (!IsIdentifier(sc.ch))
sc.SetState(SCE_HOLLYWOOD_DEFAULT);
} else if (sc.state == SCE_HOLLYWOOD_NUMBER) {
if (!IsDigit(sc.ch) && sc.ch != '.')
sc.SetState(SCE_HOLLYWOOD_DEFAULT);
} else if (sc.state == SCE_HOLLYWOOD_HEXNUMBER) {
if (!IsHexDigit(sc.ch))
sc.SetState(SCE_HOLLYWOOD_DEFAULT);
} else if (sc.state == SCE_HOLLYWOOD_STRING) {
if (sc.ch == '"') {
sc.ForwardSetState(SCE_HOLLYWOOD_DEFAULT);
}
if (sc.atLineEnd) {
sc.SetState(SCE_HOLLYWOOD_DEFAULT);
}
} else if (sc.state == SCE_HOLLYWOOD_COMMENT) {
if (sc.atLineEnd) {
sc.SetState(SCE_HOLLYWOOD_DEFAULT);
}
} else if (sc.state == SCE_HOLLYWOOD_COMMENTBLOCK) {
if (sc.Match("*/") && !inString) {
sc.Forward();
sc.ForwardSetState(SCE_HOLLYWOOD_DEFAULT);
}
} else if (sc.state == SCE_HOLLYWOOD_STRINGBLOCK) {
if (sc.Match("]]") && !inString) {
sc.Forward();
sc.ForwardSetState(SCE_HOLLYWOOD_DEFAULT);
}
}
if (sc.state == SCE_HOLLYWOOD_DEFAULT) {
if (sc.Match(';')) {
sc.SetState(SCE_HOLLYWOOD_COMMENT);
} else if (sc.Match("/*")) {
sc.SetState(SCE_HOLLYWOOD_COMMENTBLOCK);
sc.Forward();
} else if (sc.Match("[[")) {
sc.SetState(SCE_HOLLYWOOD_STRINGBLOCK);
sc.Forward();
} else if (sc.Match('"')) {
sc.SetState(SCE_HOLLYWOOD_STRING);
} else if (sc.Match('$')) {
sc.SetState(SCE_HOLLYWOOD_HEXNUMBER);
} else if (sc.Match("0x") || sc.Match("0X")) { // must be before IsDigit() because of 0x
sc.SetState(SCE_HOLLYWOOD_HEXNUMBER);
sc.Forward();
} else if (sc.ch == '.' && (sc.chNext >= '0' && sc.chNext <= '9')) { // ".1234" style numbers
sc.SetState(SCE_HOLLYWOOD_NUMBER);
sc.Forward();
} else if (IsDigit(sc.ch)) {
sc.SetState(SCE_HOLLYWOOD_NUMBER);
} else if (sc.Match('#')) {
sc.SetState(SCE_HOLLYWOOD_CONSTANT);
} else if (sc.Match('@')) {
sc.SetState(SCE_HOLLYWOOD_PREPROCESSOR);
} else if (IsOperator(sc.ch)) {
sc.SetState(SCE_HOLLYWOOD_OPERATOR);
} else if (IsIdentifier(sc.ch)) {
sc.SetState(SCE_HOLLYWOOD_IDENTIFIER);
}
}
if (!sc.More())
break;
}
sc.Complete();
}
void SCI_METHOD LexerHollywood::Fold(Sci_PositionU startPos, Sci_Position length, int /* initStyle */, IDocument *pAccess) {
if (!options.fold)
return;
LexAccessor styler(pAccess);
Sci_PositionU lengthDoc = startPos + length;
int visibleChars = 0;
Sci_Position lineCurrent = styler.GetLine(startPos);
int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
int levelCurrent = levelPrev;
char chNext = styler[startPos];
int styleNext = styler.StyleAt(startPos);
int done = 0;
char word[256];
int wordlen = 0;
for (Sci_PositionU 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 (!done) {
if (wordlen) { // are we scanning a token already?
word[wordlen] = static_cast<char>(LowerCase(ch));
if (!IsIdentifier(ch)) { // done with token
word[wordlen] = '\0';
levelCurrent += CheckFoldPoint(word);
done = 1;
} else if (wordlen < 255) {
wordlen++;
}
} else { // start scanning at first non-whitespace character
if (!IsSpace(ch)) {
if (style != SCE_HOLLYWOOD_COMMENTBLOCK && IsIdentifier(ch)) {
word[0] = static_cast<char>(LowerCase(ch));
wordlen = 1;
} else // done with this line
done = 1;
}
}
}
if (atEOL) {
int lev = levelPrev;
if (visibleChars == 0 && options.foldCompact) {
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;
done = 0;
wordlen = 0;
}
if (!IsSpace(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);
}
extern const LexerModule lmHollywood(SCLEX_HOLLYWOOD, LexerHollywood::LexerFactoryHollywood, "hollywood", hollywoodWordListDesc);