+// Scintilla source code edit control
+/** @file LexTADS3.cxx
+ ** Lexer for TADS3.
+ **/
+/* Copyright 2005 by Michael Cartmell
+ * Parts copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
+ * In particular FoldTADS3Doc is derived from FoldCppDoc
+ * 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"
+
+static const int T3_SINGLE_QUOTE = 1;
+static const int T3_INT_EXPRESSION = 2;
+
+static inline bool IsEOL(const int ch, const int chNext) {
+ return (ch == '\r' && chNext != '\n') || (ch == '\n');
+}
+
+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 == '_' || 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;
+ sc.SetState(SCE_T3_OPERATOR);
+ sc.ForwardSetState(initState);
+}
+
+static void ColouriseTADSHTMLString(StyleContext &sc, int &lineState) {
+ int endState = sc.state;
+ int chQuote = sc.ch;
+ if (endState == SCE_T3_HTML_STRING) {
+ if (lineState&T3_SINGLE_QUOTE) {
+ endState = SCE_T3_S_STRING;
+ chQuote = '"';
+ } else if (lineState&T3_INT_EXPRESSION) {
+ endState = SCE_T3_X_STRING;
+ chQuote = '\'';
+ } else {
+ endState = SCE_T3_D_STRING;
+ chQuote = '\'';
+ }
+ } else {
+ sc.SetState(SCE_T3_HTML_STRING);
+ sc.Forward();
+ }
+ int chString = chQuote == '"'? '\'': '"';
+
+ while (sc.More()) {
+ if (IsEOL(sc.ch, sc.chNext)) {
+ return;
+ }
+ if (sc.ch == chQuote) {
+ sc.ForwardSetState(endState);
+ return;
+ }
+ if (sc.ch == chString) {
+ sc.SetState(endState);
+ return;
+ }
+ if (sc.Match('\\', static_cast<char>(chQuote))
+ || sc.Match('\\', static_cast<char>(chString))) {
+ 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.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.Forward(2);
+ } else if (sc.ch == '{') {
+ ColouriseTADS3MsgParam(sc, lineState);
+ } else if (sc.Match('<', '.')) {
+ ColouriseTADS3LibDirective(sc, lineState);
+ } else if (sc.ch == '<') {
+ ColouriseTADS3HTMLTag(sc, lineState);
+ } 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 (IsEOL(sc.ch, sc.chNext)) {
+ 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);
+ lineState &= ~(T3_SINGLE_QUOTE|T3_INT_EXPRESSION);
+ } else if (IsATADS3Operator(sc.ch)) {
+ if (sc.state == SCE_T3_X_DEFAULT) {
+ if (sc.ch == '(') {
+ bracketLevel++;
+ } else if (sc.ch == ')') {
+ 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 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 == ';' && style == SCE_T3_OPERATOR ) {
+ 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 (style == SCE_T3_OPERATOR) {
+ 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);
projects / wxWidgets.git / commitdiff
