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// Scintilla source code edit control
/** @file LexTADS3.cxx
** Lexer for TADS3.
**/
// Copyright 1998-2006 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
/*
* TADS3 is a language designed by Michael J. Roberts for the writing of text
* based games. TADS comes from Text Adventure Development System. It has good
* support for the processing and outputting of formatted text and much of a
* TADS program listing consists of strings.
*
* TADS has two types of strings, those enclosed in single quotes (') and those
* enclosed in double quotes ("). These strings have different symantics and
* can be given different highlighting if desired.
*
* There can be embedded within both types of strings html tags
* ( <tag key=value> ), library directives ( <.directive> ), and message
* parameters ( {The doctor's/his} ).
*
* Double quoted strings can also contain interpolated expressions
* ( << rug.moved ? ' and a hole in the floor. ' : nil >> ). These expressions
* may themselves contain single or double quoted strings, although the double
* quoted strings may not contain interpolated expressions.
*
* These embedded constructs influence the output and formatting and are an
* important part of a program and require highlighting.
*
* LINKS
* http://www.tads.org/
*/
#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 const int T3_SINGLE_QUOTE = 1;
static const int T3_INT_EXPRESSION = 2;
static const int T3_INT_EXPRESSION_IN_TAG = 4;
static const int T3_HTML_SQUOTE = 8;
static inline bool IsEOL(const int ch, const int chNext) {
return (ch == '\r' && chNext != '\n') || (ch == '\n');
}
/*
* Test the current character to see if it's the START of an EOL sequence;
* if so, skip ahead to the last character of the sequence and return true,
* and if not just return false. There are a few places where we want to
* check to see if a newline sequence occurs at a particular point, but
* where a caller expects a subroutine to stop only upon reaching the END
* of a newline sequence (in particular, CR-LF on Windows). That's why
* IsEOL() above only returns true on CR if the CR isn't followed by an LF
* - it doesn't want to admit that there's a newline until reaching the END
* of the sequence. We meet both needs by saying that there's a newline
* when we see the CR in a CR-LF, but skipping the CR before returning so
* that the caller's caller will see that we've stopped at the LF.
*/
static inline bool IsEOLSkip(StyleContext &sc)
{
/* test for CR-LF */
if (sc.ch == '\r' && sc.chNext == '\n')
{
/* got CR-LF - skip the CR and indicate that we're at a newline */
sc.Forward();
return true;
}
/*
* in other cases, we have at most a 1-character newline, so do the
* normal IsEOL test
*/
return IsEOL(sc.ch, sc.chNext);
}
static inline bool IsASpaceOrTab(const int ch) {
return ch == ' ' || ch == '\t';
}
static inline bool IsATADS3Operator(const int ch) {
return ch == '=' || ch == '{' || ch == '}' || ch == '(' || ch == ')'
|| ch == '[' || ch == ']' || ch == ',' || ch == ':' || ch == ';'
|| ch == '+' || ch == '-' || ch == '*' || ch == '/' || ch == '%'
|| ch == '?' || ch == '!' || ch == '<' || ch == '>' || ch == '|'
|| ch == '@' || ch == '&' || ch == '~';
}
static inline bool IsAWordChar(const int ch) {
return isalnum(ch) || ch == '_';
}
static inline bool IsAWordStart(const int ch) {
return isalpha(ch) || ch == '_';
}
static inline bool IsAHexDigit(const int ch) {
int lch = tolower(ch);
return isdigit(lch) || lch == 'a' || lch == 'b' || lch == 'c'
|| lch == 'd' || lch == 'e' || lch == 'f';
}
static inline bool IsAnHTMLChar(int ch) {
return isalnum(ch) || ch == '-' || ch == '_' || ch == '.';
}
static inline bool IsADirectiveChar(int ch) {
return isalnum(ch) || isspace(ch) || ch == '-' || ch == '/';
}
static inline bool IsANumberStart(StyleContext &sc) {
return isdigit(sc.ch)
|| (!isdigit(sc.chPrev) && sc.ch == '.' && isdigit(sc.chNext));
}
inline static void ColouriseTADS3Operator(StyleContext &sc) {
int initState = sc.state;
int c = sc.ch;
sc.SetState(c == '{' || c == '}' ? SCE_T3_BRACE : SCE_T3_OPERATOR);
sc.ForwardSetState(initState);
}
static void ColouriseTADSHTMLString(StyleContext &sc, int &lineState) {
int endState = sc.state;
int chQuote = sc.ch;
int chString = (lineState & T3_SINGLE_QUOTE) ? '\'' : '"';
if (endState == SCE_T3_HTML_STRING) {
if (lineState&T3_SINGLE_QUOTE) {
endState = SCE_T3_S_STRING;
chString = '\'';
} else if (lineState&T3_INT_EXPRESSION) {
endState = SCE_T3_X_STRING;
chString = '"';
} else {
endState = SCE_T3_HTML_DEFAULT;
chString = '"';
}
chQuote = (lineState & T3_HTML_SQUOTE) ? '\'' : '"';
} else {
sc.SetState(SCE_T3_HTML_STRING);
sc.Forward();
}
if (chQuote == '"')
lineState &= ~T3_HTML_SQUOTE;
else
lineState |= T3_HTML_SQUOTE;
while (sc.More()) {
if (IsEOL(sc.ch, sc.chNext)) {
return;
}
if (sc.ch == chQuote) {
sc.ForwardSetState(endState);
return;
}
if (sc.Match('\\', static_cast<char>(chQuote))) {
sc.Forward(2);
sc.SetState(endState);
return;
}
if (sc.ch == chString) {
sc.SetState(SCE_T3_DEFAULT);
return;
}
if (sc.Match('<', '<')) {
lineState |= T3_INT_EXPRESSION | T3_INT_EXPRESSION_IN_TAG;
sc.SetState(SCE_T3_X_DEFAULT);
sc.Forward(2);
return;
}
if (sc.Match('\\', static_cast<char>(chQuote))
|| sc.Match('\\', static_cast<char>(chString))
|| sc.Match('\\', '\\')) {
sc.Forward(2);
} else {
sc.Forward();
}
}
}
static void ColouriseTADS3HTMLTagStart(StyleContext &sc) {
sc.SetState(SCE_T3_HTML_TAG);
sc.Forward();
if (sc.ch == '/') {
sc.Forward();
}
while (IsAnHTMLChar(sc.ch)) {
sc.Forward();
}
}
static void ColouriseTADS3HTMLTag(StyleContext &sc, int &lineState) {
int endState = sc.state;
int chQuote = '"';
int chString = '\'';
switch (endState) {
case SCE_T3_S_STRING:
ColouriseTADS3HTMLTagStart(sc);
sc.SetState(SCE_T3_HTML_DEFAULT);
chQuote = '\'';
chString = '"';
break;
case SCE_T3_D_STRING:
case SCE_T3_X_STRING:
ColouriseTADS3HTMLTagStart(sc);
sc.SetState(SCE_T3_HTML_DEFAULT);
break;
case SCE_T3_HTML_DEFAULT:
if (lineState&T3_SINGLE_QUOTE) {
endState = SCE_T3_S_STRING;
chQuote = '\'';
chString = '"';
} else if (lineState&T3_INT_EXPRESSION) {
endState = SCE_T3_X_STRING;
} else {
endState = SCE_T3_D_STRING;
}
break;
}
while (sc.More()) {
if (IsEOL(sc.ch, sc.chNext)) {
return;
}
if (sc.Match('/', '>')) {
sc.SetState(SCE_T3_HTML_TAG);
sc.Forward(2);
sc.SetState(endState);
return;
}
if (sc.ch == '>') {
sc.SetState(SCE_T3_HTML_TAG);
sc.ForwardSetState(endState);
return;
}
if (sc.ch == chQuote) {
sc.SetState(endState);
return;
}
if (sc.Match('\\', static_cast<char>(chQuote))) {
sc.Forward();
ColouriseTADSHTMLString(sc, lineState);
if (sc.state == SCE_T3_X_DEFAULT)
break;
} else if (sc.ch == chString) {
ColouriseTADSHTMLString(sc, lineState);
} else if (sc.ch == '=') {
ColouriseTADS3Operator(sc);
} else {
sc.Forward();
}
}
}
static void ColouriseTADS3Keyword(StyleContext &sc,
WordList *keywordlists[], unsigned int endPos) {
char s[250];
WordList &keywords = *keywordlists[0];
WordList &userwords1 = *keywordlists[1];
WordList &userwords2 = *keywordlists[2];
WordList &userwords3 = *keywordlists[3];
int initState = sc.state;
sc.SetState(SCE_T3_IDENTIFIER);
while (sc.More() && (IsAWordChar(sc.ch))) {
sc.Forward();
}
sc.GetCurrent(s, sizeof(s));
if ( strcmp(s, "is") == 0 || strcmp(s, "not") == 0) {
// have to find if "in" is next
int n = 1;
while (n + sc.currentPos < endPos && IsASpaceOrTab(sc.GetRelative(n)))
n++;
if (sc.GetRelative(n) == 'i' && sc.GetRelative(n+1) == 'n') {
sc.Forward(n+2);
sc.ChangeState(SCE_T3_KEYWORD);
}
} else if (keywords.InList(s)) {
sc.ChangeState(SCE_T3_KEYWORD);
} else if (userwords3.InList(s)) {
sc.ChangeState(SCE_T3_USER3);
} else if (userwords2.InList(s)) {
sc.ChangeState(SCE_T3_USER2);
} else if (userwords1.InList(s)) {
sc.ChangeState(SCE_T3_USER1);
}
sc.SetState(initState);
}
static void ColouriseTADS3MsgParam(StyleContext &sc, int &lineState) {
int endState = sc.state;
int chQuote = '"';
switch (endState) {
case SCE_T3_S_STRING:
sc.SetState(SCE_T3_MSG_PARAM);
sc.Forward();
chQuote = '\'';
break;
case SCE_T3_D_STRING:
case SCE_T3_X_STRING:
sc.SetState(SCE_T3_MSG_PARAM);
sc.Forward();
break;
case SCE_T3_MSG_PARAM:
if (lineState&T3_SINGLE_QUOTE) {
endState = SCE_T3_S_STRING;
chQuote = '\'';
} else if (lineState&T3_INT_EXPRESSION) {
endState = SCE_T3_X_STRING;
} else {
endState = SCE_T3_D_STRING;
}
break;
}
while (sc.More() && sc.ch != '}' && sc.ch != chQuote) {
if (IsEOL(sc.ch, sc.chNext)) {
return;
}
if (sc.ch == '\\') {
sc.Forward();
}
sc.Forward();
}
if (sc.ch == chQuote) {
sc.SetState(endState);
} else {
sc.ForwardSetState(endState);
}
}
static void ColouriseTADS3LibDirective(StyleContext &sc, int &lineState) {
int initState = sc.state;
int chQuote = '"';
switch (initState) {
case SCE_T3_S_STRING:
sc.SetState(SCE_T3_LIB_DIRECTIVE);
sc.Forward(2);
chQuote = '\'';
break;
case SCE_T3_D_STRING:
sc.SetState(SCE_T3_LIB_DIRECTIVE);
sc.Forward(2);
break;
case SCE_T3_LIB_DIRECTIVE:
if (lineState&T3_SINGLE_QUOTE) {
initState = SCE_T3_S_STRING;
chQuote = '\'';
} else {
initState = SCE_T3_D_STRING;
}
break;
}
while (sc.More() && IsADirectiveChar(sc.ch)) {
if (IsEOL(sc.ch, sc.chNext)) {
return;
}
sc.Forward();
};
if (sc.ch == '>' || !sc.More()) {
sc.ForwardSetState(initState);
} else if (sc.ch == chQuote) {
sc.SetState(initState);
} else {
sc.ChangeState(initState);
sc.Forward();
}
}
static void ColouriseTADS3String(StyleContext &sc, int &lineState) {
int chQuote = sc.ch;
int endState = sc.state;
switch (sc.state) {
case SCE_T3_DEFAULT:
case SCE_T3_X_DEFAULT:
if (chQuote == '"') {
if (sc.state == SCE_T3_DEFAULT) {
sc.SetState(SCE_T3_D_STRING);
} else {
sc.SetState(SCE_T3_X_STRING);
}
lineState &= ~T3_SINGLE_QUOTE;
} else {
sc.SetState(SCE_T3_S_STRING);
lineState |= T3_SINGLE_QUOTE;
}
sc.Forward();
break;
case SCE_T3_S_STRING:
chQuote = '\'';
endState = lineState&T3_INT_EXPRESSION ?
SCE_T3_X_DEFAULT : SCE_T3_DEFAULT;
break;
case SCE_T3_D_STRING:
chQuote = '"';
endState = SCE_T3_DEFAULT;
break;
case SCE_T3_X_STRING:
chQuote = '"';
endState = SCE_T3_X_DEFAULT;
break;
}
while (sc.More()) {
if (IsEOL(sc.ch, sc.chNext)) {
return;
}
if (sc.ch == chQuote) {
sc.ForwardSetState(endState);
return;
}
if (sc.state == SCE_T3_D_STRING && sc.Match('<', '<')) {
lineState |= T3_INT_EXPRESSION;
sc.SetState(SCE_T3_X_DEFAULT);
sc.Forward(2);
return;
}
if (sc.Match('\\', static_cast<char>(chQuote))
|| sc.Match('\\', '\\')) {
sc.Forward(2);
} else if (sc.ch == '{') {
ColouriseTADS3MsgParam(sc, lineState);
} else if (sc.Match('<', '.')) {
ColouriseTADS3LibDirective(sc, lineState);
} else if (sc.ch == '<') {
ColouriseTADS3HTMLTag(sc, lineState);
if (sc.state == SCE_T3_X_DEFAULT)
return;
} else {
sc.Forward();
}
}
}
static void ColouriseTADS3Comment(StyleContext &sc, int endState) {
sc.SetState(SCE_T3_BLOCK_COMMENT);
while (sc.More()) {
if (IsEOL(sc.ch, sc.chNext)) {
return;
}
if (sc.Match('*', '/')) {
sc.Forward(2);
sc.SetState(endState);
return;
}
sc.Forward();
}
}
static void ColouriseToEndOfLine(StyleContext &sc, int initState, int endState) {
sc.SetState(initState);
while (sc.More()) {
if (sc.ch == '\\') {
sc.Forward();
if (IsEOLSkip(sc)) {
return;
}
}
if (IsEOL(sc.ch, sc.chNext)) {
sc.SetState(endState);
return;
}
sc.Forward();
}
}
static void ColouriseTADS3Number(StyleContext &sc) {
int endState = sc.state;
bool inHexNumber = false;
bool seenE = false;
bool seenDot = sc.ch == '.';
sc.SetState(SCE_T3_NUMBER);
if (sc.More()) {
sc.Forward();
}
if (sc.chPrev == '0' && tolower(sc.ch) == 'x') {
inHexNumber = true;
sc.Forward();
}
while (sc.More()) {
if (inHexNumber) {
if (!IsAHexDigit(sc.ch)) {
break;
}
} else if (!isdigit(sc.ch)) {
if (!seenE && tolower(sc.ch) == 'e') {
seenE = true;
seenDot = true;
if (sc.chNext == '+' || sc.chNext == '-') {
sc.Forward();
}
} else if (!seenDot && sc.ch == '.') {
seenDot = true;
} else {
break;
}
}
sc.Forward();
}
sc.SetState(endState);
}
static void ColouriseTADS3Doc(unsigned int startPos, int length, int initStyle,
WordList *keywordlists[], Accessor &styler) {
int visibleChars = 0;
int bracketLevel = 0;
int lineState = 0;
unsigned int endPos = startPos + length;
int lineCurrent = styler.GetLine(startPos);
if (lineCurrent > 0) {
lineState = styler.GetLineState(lineCurrent-1);
}
StyleContext sc(startPos, length, initStyle, styler);
while (sc.More()) {
if (IsEOL(sc.ch, sc.chNext)) {
styler.SetLineState(lineCurrent, lineState);
lineCurrent++;
visibleChars = 0;
sc.Forward();
if (sc.ch == '\n') {
sc.Forward();
}
}
switch(sc.state) {
case SCE_T3_PREPROCESSOR:
case SCE_T3_LINE_COMMENT:
ColouriseToEndOfLine(sc, sc.state, lineState&T3_INT_EXPRESSION ?
SCE_T3_X_DEFAULT : SCE_T3_DEFAULT);
break;
case SCE_T3_S_STRING:
case SCE_T3_D_STRING:
case SCE_T3_X_STRING:
ColouriseTADS3String(sc, lineState);
visibleChars++;
break;
case SCE_T3_MSG_PARAM:
ColouriseTADS3MsgParam(sc, lineState);
break;
case SCE_T3_LIB_DIRECTIVE:
ColouriseTADS3LibDirective(sc, lineState);
break;
case SCE_T3_HTML_DEFAULT:
ColouriseTADS3HTMLTag(sc, lineState);
break;
case SCE_T3_HTML_STRING:
ColouriseTADSHTMLString(sc, lineState);
break;
case SCE_T3_BLOCK_COMMENT:
ColouriseTADS3Comment(sc, lineState&T3_INT_EXPRESSION ?
SCE_T3_X_DEFAULT : SCE_T3_DEFAULT);
break;
case SCE_T3_DEFAULT:
case SCE_T3_X_DEFAULT:
if (IsASpaceOrTab(sc.ch)) {
sc.Forward();
} else if (sc.ch == '#' && visibleChars == 0) {
ColouriseToEndOfLine(sc, SCE_T3_PREPROCESSOR, sc.state);
} else if (sc.Match('/', '*')) {
ColouriseTADS3Comment(sc, sc.state);
visibleChars++;
} else if (sc.Match('/', '/')) {
ColouriseToEndOfLine(sc, SCE_T3_LINE_COMMENT, sc.state);
} else if (sc.ch == '"') {
bracketLevel = 0;
ColouriseTADS3String(sc, lineState);
visibleChars++;
} else if (sc.ch == '\'') {
ColouriseTADS3String(sc, lineState);
visibleChars++;
} else if (sc.state == SCE_T3_X_DEFAULT && bracketLevel == 0
&& sc.Match('>', '>')) {
sc.Forward(2);
sc.SetState(SCE_T3_D_STRING);
if (lineState & T3_INT_EXPRESSION_IN_TAG)
sc.SetState(SCE_T3_HTML_STRING);
lineState &= ~(T3_SINGLE_QUOTE|T3_INT_EXPRESSION
|T3_INT_EXPRESSION_IN_TAG);
} else if (IsATADS3Operator(sc.ch)) {
if (sc.state == SCE_T3_X_DEFAULT) {
if (sc.ch == '(') {
bracketLevel++;
} else if (sc.ch == ')' && bracketLevel > 0) {
bracketLevel--;
}
}
ColouriseTADS3Operator(sc);
visibleChars++;
} else if (IsANumberStart(sc)) {
ColouriseTADS3Number(sc);
visibleChars++;
} else if (IsAWordStart(sc.ch)) {
ColouriseTADS3Keyword(sc, keywordlists, endPos);
visibleChars++;
} else if (sc.Match("...")) {
sc.SetState(SCE_T3_IDENTIFIER);
sc.Forward(3);
sc.SetState(SCE_T3_DEFAULT);
} else {
sc.Forward();
visibleChars++;
}
break;
default:
sc.SetState(SCE_T3_DEFAULT);
sc.Forward();
}
}
sc.Complete();
}
/*
TADS3 has two styles of top level block (TLB). Eg
// default style
silverKey : Key 'small silver key' 'small silver key'
"A small key glints in the sunlight. "
;
and
silverKey : Key {
'small silver key'
'small silver key'
"A small key glints in the sunlight. "
}
Some constructs mandate one or the other, but usually the author has may choose
either.
T3_SEENSTART is used to indicate that a braceless TLB has been (potentially)
seen and is also used to match the closing ';' of the default style.
T3_EXPECTINGIDENTIFIER and T3_EXPECTINGPUNCTUATION are used to keep track of
what characters may be seen without incrementing the block level. The general
pattern is identifier <punc> identifier, acceptable punctuation characters
are ':', ',', '(' and ')'. No attempt is made to ensure that punctuation
characters are syntactically correct, eg parentheses match. A ')' always
signifies the start of a block. We just need to check if it is followed by a
'{', in which case we let the brace handling code handle the folding level.
expectingIdentifier == false && expectingIdentifier == false
Before the start of a TLB.
expectingIdentifier == true && expectingIdentifier == true
Currently in an identifier. Will accept identifier or punctuation.
expectingIdentifier == true && expectingIdentifier == false
Just seen a punctuation character & now waiting for an identifier to start.
expectingIdentifier == false && expectingIdentifier == truee
We were in an identifier and have seen space. Now waiting to see a punctuation
character
Space, comments & preprocessor directives are always acceptable and are
equivalent.
*/
static const int T3_SEENSTART = 1 << 12;
static const int T3_EXPECTINGIDENTIFIER = 1 << 13;
static const int T3_EXPECTINGPUNCTUATION = 1 << 14;
static inline bool IsStringTransition(int s1, int s2) {
return s1 != s2
&& (s1 == SCE_T3_S_STRING || s1 == SCE_T3_X_STRING
|| (s1 == SCE_T3_D_STRING && s2 != SCE_T3_X_DEFAULT))
&& s2 != SCE_T3_LIB_DIRECTIVE
&& s2 != SCE_T3_MSG_PARAM
&& s2 != SCE_T3_HTML_TAG
&& s2 != SCE_T3_HTML_STRING;
}
static inline bool IsATADS3Punctuation(const int ch) {
return ch == ':' || ch == ',' || ch == '(' || ch == ')';
}
static inline bool IsAnIdentifier(const int style) {
return style == SCE_T3_IDENTIFIER
|| style == SCE_T3_USER1
|| style == SCE_T3_USER2
|| style == SCE_T3_USER3;
}
static inline bool IsAnOperator(const int style) {
return style == SCE_T3_OPERATOR || SCE_T3_BRACE;
}
static inline bool IsSpaceEquivalent(const int ch, const int style) {
return isspace(ch)
|| style == SCE_T3_BLOCK_COMMENT
|| style == SCE_T3_LINE_COMMENT
|| style == SCE_T3_PREPROCESSOR;
}
static char peekAhead(unsigned int startPos, unsigned int endPos,
Accessor &styler) {
for (unsigned int i = startPos; i < endPos; i++) {
int style = styler.StyleAt(i);
char ch = styler[i];
if (!IsSpaceEquivalent(ch, style)) {
if (IsAnIdentifier(style)) {
return 'a';
}
if (IsATADS3Punctuation(ch)) {
return ':';
}
if (ch == '{') {
return '{';
}
return '*';
}
}
return ' ';
}
static void FoldTADS3Doc(unsigned int startPos, int length, int initStyle,
WordList *[], Accessor &styler) {
unsigned int endPos = startPos + length;
int lineCurrent = styler.GetLine(startPos);
int levelCurrent = SC_FOLDLEVELBASE;
if (lineCurrent > 0)
levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
int seenStart = levelCurrent & T3_SEENSTART;
int expectingIdentifier = levelCurrent & T3_EXPECTINGIDENTIFIER;
int expectingPunctuation = levelCurrent & T3_EXPECTINGPUNCTUATION;
levelCurrent &= SC_FOLDLEVELNUMBERMASK;
int levelMinCurrent = levelCurrent;
int levelNext = levelCurrent;
char chNext = styler[startPos];
int styleNext = styler.StyleAt(startPos);
int style = initStyle;
char ch = chNext;
int stylePrev = style;
bool redo = false;
for (unsigned int i = startPos; i < endPos; i++) {
if (redo) {
redo = false;
i--;
} else {
ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
stylePrev = style;
style = styleNext;
styleNext = styler.StyleAt(i + 1);
}
bool atEOL = IsEOL(ch, chNext);
if (levelNext == SC_FOLDLEVELBASE) {
if (IsSpaceEquivalent(ch, style)) {
if (expectingPunctuation) {
expectingIdentifier = 0;
}
if (style == SCE_T3_BLOCK_COMMENT) {
levelNext++;
}
} else if (ch == '{') {
levelNext++;
seenStart = 0;
} else if (ch == '\'' || ch == '"' || ch == '[') {
levelNext++;
if (seenStart) {
redo = true;
}
} else if (ch == ';') {
seenStart = 0;
expectingIdentifier = 0;
expectingPunctuation = 0;
} else if (expectingIdentifier && expectingPunctuation) {
if (IsATADS3Punctuation(ch)) {
if (ch == ')' && peekAhead(i+1, endPos, styler) != '{') {
levelNext++;
} else {
expectingPunctuation = 0;
}
} else if (!IsAnIdentifier(style)) {
levelNext++;
}
} else if (expectingIdentifier && !expectingPunctuation) {
if (!IsAnIdentifier(style)) {
levelNext++;
} else {
expectingPunctuation = T3_EXPECTINGPUNCTUATION;
}
} else if (!expectingIdentifier && expectingPunctuation) {
if (!IsATADS3Punctuation(ch)) {
levelNext++;
} else {
if (ch == ')' && peekAhead(i+1, endPos, styler) != '{') {
levelNext++;
} else {
expectingIdentifier = T3_EXPECTINGIDENTIFIER;
expectingPunctuation = 0;
}
}
} else if (!expectingIdentifier && !expectingPunctuation) {
if (IsAnIdentifier(style)) {
seenStart = T3_SEENSTART;
expectingIdentifier = T3_EXPECTINGIDENTIFIER;
expectingPunctuation = T3_EXPECTINGPUNCTUATION;
}
}
if (levelNext != SC_FOLDLEVELBASE && style != SCE_T3_BLOCK_COMMENT) {
expectingIdentifier = 0;
expectingPunctuation = 0;
}
} else if (levelNext == SC_FOLDLEVELBASE+1 && seenStart
&& ch == ';' && IsAnOperator(style)) {
levelNext--;
seenStart = 0;
} else if (style == SCE_T3_BLOCK_COMMENT) {
if (stylePrev != SCE_T3_BLOCK_COMMENT) {
levelNext++;
} else if (styleNext != SCE_T3_BLOCK_COMMENT && !atEOL) {
// Comments don't end at end of line and the next character may be unstyled.
levelNext--;
}
} else if (ch == '\'' || ch == '"') {
if (IsStringTransition(style, stylePrev)) {
if (levelMinCurrent > levelNext) {
levelMinCurrent = levelNext;
}
levelNext++;
} else if (IsStringTransition(style, styleNext)) {
levelNext--;
}
} else if (IsAnOperator(style)) {
if (ch == '{' || ch == '[') {
// Measure the minimum before a '{' to allow
// folding on "} else {"
if (levelMinCurrent > levelNext) {
levelMinCurrent = levelNext;
}
levelNext++;
} else if (ch == '}' || ch == ']') {
levelNext--;
}
}
if (atEOL) {
if (seenStart && levelNext == SC_FOLDLEVELBASE) {
switch (peekAhead(i+1, endPos, styler)) {
case ' ':
case '{':
break;
case '*':
levelNext++;
break;
case 'a':
if (expectingPunctuation) {
levelNext++;
}
break;
case ':':
if (expectingIdentifier) {
levelNext++;
}
break;
}
if (levelNext != SC_FOLDLEVELBASE) {
expectingIdentifier = 0;
expectingPunctuation = 0;
}
}
int lev = levelMinCurrent | (levelNext | expectingIdentifier
| expectingPunctuation | seenStart) << 16;
if (levelMinCurrent < levelNext)
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent)) {
styler.SetLevel(lineCurrent, lev);
}
lineCurrent++;
levelCurrent = levelNext;
levelMinCurrent = levelCurrent;
}
}
}
static const char * const tads3WordList[] = {
"TADS3 Keywords",
"User defined 1",
"User defined 2",
"User defined 3",
0
};
LexerModule lmTADS3(SCLEX_TADS3, ColouriseTADS3Doc, "tads3", FoldTADS3Doc, tads3WordList);
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