[wxWidgets.git] / src / stc / scintilla / src / LexRuby.cxx

// Scintilla source code edit control
/** @file LexRuby.cxx
 ** Lexer for Ruby.
 **/
// Copyright 2001- by Clemens Wyss <wys@helbling.ch>
// The License.txt file describes the conditions under which this software may be distributed.

#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 "KeyWords.h"
#include "Scintilla.h"
#include "SciLexer.h"

static void ClassifyWordRb(unsigned int start, unsigned int end, WordList &keywords, Accessor &styler, char *prevWord) {
	char s[100];
	bool wordIsNumber = isdigit(styler[start]) != 0;
	for (unsigned int i = 0; i < end - start + 1 && i < 30; i++) {
		s[i] = styler[start + i];
		s[i + 1] = '\0';
	}
	char chAttr = SCE_P_IDENTIFIER;
	if (0 == strcmp(prevWord, "class"))
		chAttr = SCE_P_CLASSNAME;
	else if (0 == strcmp(prevWord, "module"))
		chAttr = SCE_P_CLASSNAME;
	else if (0 == strcmp(prevWord, "def"))
		chAttr = SCE_P_DEFNAME;
	else if (wordIsNumber)
		chAttr = SCE_P_NUMBER;
	else if (keywords.InList(s))
		chAttr = SCE_P_WORD;
	// make sure that dot-qualifiers inside the word are lexed correct
	else for (unsigned int i = 0; i < end - start + 1; i++) {
		if (styler[start + i] == '.') {
			styler.ColourTo(start + i - 1, chAttr);
			styler.ColourTo(start + i, SCE_P_OPERATOR);
		}
	}
	styler.ColourTo(end, chAttr);
	strcpy(prevWord, s);
}

static bool IsRbComment(Accessor &styler, int pos, int len) {
	return len>0 && styler[pos]=='#';
}

static bool IsRbStringStart(char ch, char chNext, char chNext2) {
	if (ch == '\'' || ch == '"')
		return true;
	if (ch == 'u' || ch == 'U') {
		if (chNext == '"' || chNext == '\'')
			return true;
		if ((chNext == 'r' || chNext == 'R') && (chNext2 == '"' || chNext2 == '\''))
			return true;
	}
	if ((ch == 'r' || ch == 'R') && (chNext == '"' || chNext == '\''))
		return true;

	return false;
}

static bool IsRbWordStart(char ch, char chNext, char chNext2) {
	return (iswordchar(ch) && !IsRbStringStart(ch, chNext, chNext2));
}

/* Return the state to use for the string starting at i; *nextIndex will be set to the first index following the quote(s) */
static int GetRbStringState(Accessor &styler, int i, int *nextIndex) {
	char ch = styler.SafeGetCharAt(i);
	char chNext = styler.SafeGetCharAt(i + 1);

	// Advance beyond r, u, or ur prefix, but bail if there are any unexpected chars
	if (ch == 'r' || ch == 'R') {
		i++;
		ch = styler.SafeGetCharAt(i);
		chNext = styler.SafeGetCharAt(i + 1);
	}
	else if (ch == 'u' || ch == 'U') {
		if (chNext == 'r' || chNext == 'R')
			i += 2;
		else
			i += 1;
		ch = styler.SafeGetCharAt(i);
		chNext = styler.SafeGetCharAt(i + 1);
	}

	if (ch != '"' && ch != '\'') {
		*nextIndex = i + 1;
		return SCE_P_DEFAULT;
	}

	if (ch == chNext && ch == styler.SafeGetCharAt(i + 2)) {
		*nextIndex = i + 3;

		if (ch == '"')
			return SCE_P_TRIPLEDOUBLE;
		else
			return SCE_P_TRIPLE;
	} else {
		*nextIndex = i + 1;

		if (ch == '"')
			return SCE_P_STRING;
		else
			return SCE_P_CHARACTER;
	}
}

static void ColouriseRbDoc(unsigned int startPos, int length, int initStyle,
						   WordList *keywordlists[], Accessor &styler) {

	int lengthDoc = startPos + length;

	// Backtrack to previous line in case need to fix its tab whinging
	if (startPos > 0) {
		int lineCurrent = styler.GetLine(startPos);
		if (lineCurrent > 0) {
			startPos = styler.LineStart(lineCurrent-1);
			if (startPos == 0)
				initStyle = SCE_P_DEFAULT;
			else
				initStyle = styler.StyleAt(startPos-1);
		}
	}

	// Ruby uses a different mask because bad indentation is marked by oring with 32
	styler.StartAt(startPos, 127);

	WordList &keywords = *keywordlists[0];

	int whingeLevel = styler.GetPropertyInt("tab.timmy.whinge.level");
	char prevWord[200];
	prevWord[0] = '\0';
	if (length == 0)
		return ;

	int state = initStyle & 31;

	int nextIndex = 0;
	char chPrev = ' ';
	char chPrev2 = ' ';
	char chNext = styler[startPos];
	styler.StartSegment(startPos);
	bool atStartLine = true;
	int spaceFlags = 0;
	for (int i = startPos; i < lengthDoc; i++) {

		if (atStartLine) {
			char chBad = static_cast<char>(64);
			char chGood = static_cast<char>(0);
			char chFlags = chGood;
			if (whingeLevel == 1) {
				chFlags = (spaceFlags & wsInconsistent) ? chBad : chGood;
			} else if (whingeLevel == 2) {
				chFlags = (spaceFlags & wsSpaceTab) ? chBad : chGood;
			} else if (whingeLevel == 3) {
				chFlags = (spaceFlags & wsSpace) ? chBad : chGood;
			} else if (whingeLevel == 4) {
				chFlags = (spaceFlags & wsTab) ? chBad : chGood;
			}
			styler.SetFlags(chFlags, static_cast<char>(state));
			atStartLine = false;
		}

		char ch = chNext;
		chNext = styler.SafeGetCharAt(i + 1);
		char chNext2 = styler.SafeGetCharAt(i + 2);

		if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == lengthDoc)) {
			if ((state == SCE_P_DEFAULT) || (state == SCE_P_TRIPLE) || (state == SCE_P_TRIPLEDOUBLE)) {
				// Perform colourisation of white space and triple quoted strings at end of each line to allow
				// tab marking to work inside white space and triple quoted strings
				styler.ColourTo(i, state);
			}
			atStartLine = true;
		}

		if (styler.IsLeadByte(ch)) {
			chNext = styler.SafeGetCharAt(i + 2);
			chPrev = ' ';
			chPrev2 = ' ';
			i += 1;
			continue;
		}

		if (state == SCE_P_STRINGEOL) {
			if (ch != '\r' && ch != '\n') {
				styler.ColourTo(i - 1, state);
				state = SCE_P_DEFAULT;
			}
		}
		if (state == SCE_P_DEFAULT) {
			if (IsRbWordStart(ch, chNext, chNext2)) {
				styler.ColourTo(i - 1, state);
				state = SCE_P_WORD;
			} else if (ch == '#') {
				styler.ColourTo(i - 1, state);
				state = chNext == '#' ? SCE_P_COMMENTBLOCK : SCE_P_COMMENTLINE;
			} else if (ch == '=' && chNext == 'b') {
				// =begin indicates the start of a comment (doc) block
				if(styler.SafeGetCharAt(i + 2) == 'e' && styler.SafeGetCharAt(i + 3) == 'g' && styler.SafeGetCharAt(i + 4) == 'i' && styler.SafeGetCharAt(i + 5) == 'n') {
					styler.ColourTo(i - 1, state);
					state = SCE_P_TRIPLEDOUBLE; //SCE_C_COMMENT;
				}
			}  else if (IsRbStringStart(ch, chNext, chNext2)) {
				styler.ColourTo(i - 1, state);
				state = GetRbStringState(styler, i, &nextIndex);
				if (nextIndex != i + 1) {
					i = nextIndex - 1;
					ch = ' ';
					chPrev = ' ';
					chNext = styler.SafeGetCharAt(i + 1);
				}
			} else if (isoperator(ch)) {
				styler.ColourTo(i - 1, state);
				styler.ColourTo(i, SCE_P_OPERATOR);
			} 
			} else if (state == SCE_P_WORD) {
			if (!iswordchar(ch)) {
				ClassifyWordRb(styler.GetStartSegment(), i - 1, keywords, styler, prevWord);
				state = SCE_P_DEFAULT;
				if (ch == '#') {
					state = chNext == '#' ? SCE_P_COMMENTBLOCK : SCE_P_COMMENTLINE;
				} else if (IsRbStringStart(ch, chNext, chNext2)) {
					styler.ColourTo(i - 1, state);
					state = GetRbStringState(styler, i, &nextIndex);
					if (nextIndex != i + 1) {
						i = nextIndex - 1;
						ch = ' ';
						chPrev = ' ';
						chNext = styler.SafeGetCharAt(i + 1);
					}
				} else if (isoperator(ch)) {
					styler.ColourTo(i, SCE_P_OPERATOR);
				}
			}
		} else {
			if (state == SCE_P_COMMENTLINE || state == SCE_P_COMMENTBLOCK) {
				if (ch == '\r' || ch == '\n') {
					styler.ColourTo(i - 1, state);
					state = SCE_P_DEFAULT;
				}
			} else if (state == SCE_P_STRING) {
				if ((ch == '\r' || ch == '\n') && (chPrev != '\\')) {
					styler.ColourTo(i - 1, state);
					state = SCE_P_STRINGEOL;
				} else if (ch == '\\') {
					if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
						i++;
						ch = chNext;
						chNext = styler.SafeGetCharAt(i + 1);
					}
				} else if (ch == '\"') {
					styler.ColourTo(i, state);
					state = SCE_P_DEFAULT;
				}
			} else if (state == SCE_P_CHARACTER) {
				if ((ch == '\r' || ch == '\n') && (chPrev != '\\')) {
					styler.ColourTo(i - 1, state);
					state = SCE_P_STRINGEOL;
				} else if (ch == '\\') {
					if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
						i++;
						ch = chNext;
						chNext = styler.SafeGetCharAt(i + 1);
					}
				} else if (ch == '\'') {
					styler.ColourTo(i, state);
					state = SCE_P_DEFAULT;
				}
			} else if (state == SCE_P_TRIPLE) {
				if (ch == '\'' && chPrev == '\'' && chPrev2 == '\'') {
					styler.ColourTo(i, state);
					state = SCE_P_DEFAULT;
				}
			} else if (state == SCE_P_TRIPLEDOUBLE) {
				// =end terminates the comment block
				if (ch == 'd' && chPrev == 'n' && chPrev2 == 'e') {
					if  (styler.SafeGetCharAt(i - 3) == '=') {
						styler.ColourTo(i, state);
						state = SCE_P_DEFAULT;
					}
				}
			}
		}
		chPrev2 = chPrev;
		chPrev = ch;
	}
	if (state == SCE_P_WORD) {
		ClassifyWordRb(styler.GetStartSegment(), lengthDoc-1, keywords, styler, prevWord);
	} else {
		styler.ColourTo(lengthDoc-1, state);
	}
}

static void FoldRbDoc(unsigned int startPos, int length, int initStyle,
						   WordList *[], Accessor &styler) {
	int lengthDoc = startPos + length;

	// Backtrack to previous line in case need to fix its fold status
	int lineCurrent = styler.GetLine(startPos);
	if (startPos > 0) {
		if (lineCurrent > 0) {
			lineCurrent--;
			startPos = styler.LineStart(lineCurrent);
			if (startPos == 0)
				initStyle = SCE_P_DEFAULT;
			else
				initStyle = styler.StyleAt(startPos-1);
		}
	}
	int state = initStyle & 31;
	int spaceFlags = 0;
	int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsRbComment);
	if ((state == SCE_P_TRIPLE) || (state == SCE_P_TRIPLEDOUBLE))
		indentCurrent |= SC_FOLDLEVELWHITEFLAG;
	char chNext = styler[startPos];
	for (int i = startPos; i < lengthDoc; i++) {
		char ch = chNext;
		chNext = styler.SafeGetCharAt(i + 1);
		int style = styler.StyleAt(i) & 31;

		if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == lengthDoc)) {
			int lev = indentCurrent;
			int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsRbComment);
			if ((style == SCE_P_TRIPLE) || (style== SCE_P_TRIPLEDOUBLE))
				indentNext |= SC_FOLDLEVELWHITEFLAG;
			if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
				// Only non whitespace lines can be headers
				if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
					lev |= SC_FOLDLEVELHEADERFLAG;
				} else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
					// Line after is blank so check the next - maybe should continue further?
					int spaceFlags2 = 0;
					int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsRbComment);
					if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
						lev |= SC_FOLDLEVELHEADERFLAG;
					}
				}
			}
			indentCurrent = indentNext;
			styler.SetLevel(lineCurrent, lev);
			lineCurrent++;
		}
	}
}
						   
LexerModule lmRuby(SCLEX_RUBY, ColouriseRbDoc, "ruby", FoldRbDoc);
Commit	Line	Data
65ec6247 RD	1	// Scintilla source code edit control
	2	/** @file LexRuby.cxx
	3	** Lexer for Ruby.
	4	**/
	5	// Copyright 2001- by Clemens Wyss <wys@helbling.ch>
	6	// The License.txt file describes the conditions under which this software may be distributed.
	7
	8	#include <stdlib.h>
	9	#include <string.h>
	10	#include <ctype.h>
	11	#include <stdio.h>
	12	#include <stdarg.h>
	13
	14	#include "Platform.h"
	15
	16	#include "PropSet.h"
	17	#include "Accessor.h"
	18	#include "KeyWords.h"
	19	#include "Scintilla.h"
	20	#include "SciLexer.h"
	21
	22	static void ClassifyWordRb(unsigned int start, unsigned int end, WordList &keywords, Accessor &styler, char *prevWord) {
	23	char s[100];
1a2fb4cd	24	bool wordIsNumber = isdigit(styler[start]) != 0;
65ec6247 RD	25	for (unsigned int i = 0; i < end - start + 1 && i < 30; i++) {
	26	s[i] = styler[start + i];
	27	s[i + 1] = '\0';
	28	}
	29	char chAttr = SCE_P_IDENTIFIER;
	30	if (0 == strcmp(prevWord, "class"))
	31	chAttr = SCE_P_CLASSNAME;
	32	else if (0 == strcmp(prevWord, "module"))
	33	chAttr = SCE_P_CLASSNAME;
	34	else if (0 == strcmp(prevWord, "def"))
	35	chAttr = SCE_P_DEFNAME;
	36	else if (wordIsNumber)
	37	chAttr = SCE_P_NUMBER;
	38	else if (keywords.InList(s))
	39	chAttr = SCE_P_WORD;
	40	// make sure that dot-qualifiers inside the word are lexed correct
	41	else for (unsigned int i = 0; i < end - start + 1; i++) {
	42	if (styler[start + i] == '.') {
	43	styler.ColourTo(start + i - 1, chAttr);
	44	styler.ColourTo(start + i, SCE_P_OPERATOR);
	45	}
	46	}
	47	styler.ColourTo(end, chAttr);
	48	strcpy(prevWord, s);
	49	}
	50
	51	static bool IsRbComment(Accessor &styler, int pos, int len) {
	52	return len>0 && styler[pos]=='#';
	53	}
	54
	55	static bool IsRbStringStart(char ch, char chNext, char chNext2) {
	56	if (ch == '\'' \|\| ch == '"')
	57	return true;
	58	if (ch == 'u' \|\| ch == 'U') {
	59	if (chNext == '"' \|\| chNext == '\'')
	60	return true;
	61	if ((chNext == 'r' \|\| chNext == 'R') && (chNext2 == '"' \|\| chNext2 == '\''))
	62	return true;
	63	}
	64	if ((ch == 'r' \|\| ch == 'R') && (chNext == '"' \|\| chNext == '\''))
	65	return true;
	66
	67	return false;
	68	}
	69
	70	static bool IsRbWordStart(char ch, char chNext, char chNext2) {
	71	return (iswordchar(ch) && !IsRbStringStart(ch, chNext, chNext2));
	72	}
	73
	74	/* Return the state to use for the string starting at i; nextIndex will be set to the first index following the quote(s) /
	75	static int GetRbStringState(Accessor &styler, int i, int *nextIndex) {
	76	char ch = styler.SafeGetCharAt(i);
	77	char chNext = styler.SafeGetCharAt(i + 1);
	78
	79	// Advance beyond r, u, or ur prefix, but bail if there are any unexpected chars
	80	if (ch == 'r' \|\| ch == 'R') {
	81	i++;
	82	ch = styler.SafeGetCharAt(i);
	83	chNext = styler.SafeGetCharAt(i + 1);
	84	}
	85	else if (ch == 'u' \|\| ch == 'U') {
	86	if (chNext == 'r' \|\| chNext == 'R')
	87	i += 2;
	88	else
89	i += 1;
90	ch = styler.SafeGetCharAt(i);
91	chNext = styler.SafeGetCharAt(i + 1);
92	}
93
94	if (ch != '"' && ch != '\'') {
95	*nextIndex = i + 1;
96	return SCE_P_DEFAULT;
97	}
98
99	if (ch == chNext && ch == styler.SafeGetCharAt(i + 2)) {
100	*nextIndex = i + 3;
101
102	if (ch == '"')
103	return SCE_P_TRIPLEDOUBLE;
104	else
105	return SCE_P_TRIPLE;
106	} else {
107	*nextIndex = i + 1;
108
109	if (ch == '"')
110	return SCE_P_STRING;
111	else
112	return SCE_P_CHARACTER;
113	}
114	}
115
116	static void ColouriseRbDoc(unsigned int startPos, int length, int initStyle,
117	WordList *keywordlists[], Accessor &styler) {
118
119	int lengthDoc = startPos + length;
120
121	// Backtrack to previous line in case need to fix its tab whinging
122	if (startPos > 0) {
123	int lineCurrent = styler.GetLine(startPos);
124	if (lineCurrent > 0) {
125	startPos = styler.LineStart(lineCurrent-1);
126	if (startPos == 0)
127	initStyle = SCE_P_DEFAULT;
128	else
129	initStyle = styler.StyleAt(startPos-1);
130	}
131	}
132
133	// Ruby uses a different mask because bad indentation is marked by oring with 32
134	styler.StartAt(startPos, 127);
135
136	WordList &keywords = *keywordlists[0];
137
138	int whingeLevel = styler.GetPropertyInt("tab.timmy.whinge.level");
139	char prevWord[200];
140	prevWord[0] = '\0';
141	if (length == 0)
142	return ;
143
144	int state = initStyle & 31;
145
146	int nextIndex = 0;
147	char chPrev = ' ';
148	char chPrev2 = ' ';
149	char chNext = styler[startPos];
150	styler.StartSegment(startPos);
151	bool atStartLine = true;
152	int spaceFlags = 0;
153	for (int i = startPos; i < lengthDoc; i++) {
154
155	if (atStartLine) {
156	char chBad = static_cast<char>(64);
157	char chGood = static_cast<char>(0);
158	char chFlags = chGood;
159	if (whingeLevel == 1) {
160	chFlags = (spaceFlags & wsInconsistent) ? chBad : chGood;
161	} else if (whingeLevel == 2) {
162	chFlags = (spaceFlags & wsSpaceTab) ? chBad : chGood;
163	} else if (whingeLevel == 3) {
164	chFlags = (spaceFlags & wsSpace) ? chBad : chGood;
165	} else if (whingeLevel == 4) {
166	chFlags = (spaceFlags & wsTab) ? chBad : chGood;
167	}
168	styler.SetFlags(chFlags, static_cast<char>(state));
169	atStartLine = false;
170	}
171
172	char ch = chNext;
173	chNext = styler.SafeGetCharAt(i + 1);
174	char chNext2 = styler.SafeGetCharAt(i + 2);
175
176	if ((ch == '\r' && chNext != '\n') \|\| (ch == '\n') \|\| (i == lengthDoc)) {
177	if ((state == SCE_P_DEFAULT) \|\| (state == SCE_P_TRIPLE) \|\| (state == SCE_P_TRIPLEDOUBLE)) {
178	// Perform colourisation of white space and triple quoted strings at end of each line to allow
179	// tab marking to work inside white space and triple quoted strings
180	styler.ColourTo(i, state);
181	}
182	atStartLine = true;
183	}
184
185	if (styler.IsLeadByte(ch)) {
186	chNext = styler.SafeGetCharAt(i + 2);
187	chPrev = ' ';
188	chPrev2 = ' ';
189	i += 1;
190	continue;
191	}
192
193	if (state == SCE_P_STRINGEOL) {
194	if (ch != '\r' && ch != '\n') {
195	styler.ColourTo(i - 1, state);
196	state = SCE_P_DEFAULT;
197	}
198	}
199	if (state == SCE_P_DEFAULT) {
200	if (IsRbWordStart(ch, chNext, chNext2)) {
201	styler.ColourTo(i - 1, state);
202	state = SCE_P_WORD;
203	} else if (ch == '#') {
204	styler.ColourTo(i - 1, state);
205	state = chNext == '#' ? SCE_P_COMMENTBLOCK : SCE_P_COMMENTLINE;
206	} else if (ch == '=' && chNext == 'b') {
207	// =begin indicates the start of a comment (doc) block
208	if(styler.SafeGetCharAt(i + 2) == 'e' && styler.SafeGetCharAt(i + 3) == 'g' && styler.SafeGetCharAt(i + 4) == 'i' && styler.SafeGetCharAt(i + 5) == 'n') {
209	styler.ColourTo(i - 1, state);
210	state = SCE_P_TRIPLEDOUBLE; //SCE_C_COMMENT;
211	}
212	} else if (IsRbStringStart(ch, chNext, chNext2)) {
213	styler.ColourTo(i - 1, state);
214	state = GetRbStringState(styler, i, &nextIndex);
215	if (nextIndex != i + 1) {
216	i = nextIndex - 1;
217	ch = ' ';
218	chPrev = ' ';
219	chNext = styler.SafeGetCharAt(i + 1);
220	}
221	} else if (isoperator(ch)) {
222	styler.ColourTo(i - 1, state);
223	styler.ColourTo(i, SCE_P_OPERATOR);
224	}
225	} else if (state == SCE_P_WORD) {
226	if (!iswordchar(ch)) {
227	ClassifyWordRb(styler.GetStartSegment(), i - 1, keywords, styler, prevWord);
228	state = SCE_P_DEFAULT;
229	if (ch == '#') {
230	state = chNext == '#' ? SCE_P_COMMENTBLOCK : SCE_P_COMMENTLINE;
231	} else if (IsRbStringStart(ch, chNext, chNext2)) {
232	styler.ColourTo(i - 1, state);
233	state = GetRbStringState(styler, i, &nextIndex);
234	if (nextIndex != i + 1) {
235	i = nextIndex - 1;
236	ch = ' ';
237	chPrev = ' ';
238	chNext = styler.SafeGetCharAt(i + 1);
239	}
240	} else if (isoperator(ch)) {
241	styler.ColourTo(i, SCE_P_OPERATOR);
242	}
243	}
244	} else {
245	if (state == SCE_P_COMMENTLINE \|\| state == SCE_P_COMMENTBLOCK) {
246	if (ch == '\r' \|\| ch == '\n') {
247	styler.ColourTo(i - 1, state);
248	state = SCE_P_DEFAULT;
249	}
250	} else if (state == SCE_P_STRING) {
251	if ((ch == '\r' \|\| ch == '\n') && (chPrev != '\\')) {
252	styler.ColourTo(i - 1, state);
253	state = SCE_P_STRINGEOL;
254	} else if (ch == '\\') {
255	if (chNext == '\"' \|\| chNext == '\'' \|\| chNext == '\\') {
256	i++;
257	ch = chNext;
258	chNext = styler.SafeGetCharAt(i + 1);
259	}
260	} else if (ch == '\"') {
261	styler.ColourTo(i, state);
262	state = SCE_P_DEFAULT;
263	}
264	} else if (state == SCE_P_CHARACTER) {
265	if ((ch == '\r' \|\| ch == '\n') && (chPrev != '\\')) {
266	styler.ColourTo(i - 1, state);
267	state = SCE_P_STRINGEOL;
268	} else if (ch == '\\') {
269	if (chNext == '\"' \|\| chNext == '\'' \|\| chNext == '\\') {
270	i++;
271	ch = chNext;
272	chNext = styler.SafeGetCharAt(i + 1);
273	}
274	} else if (ch == '\'') {
275	styler.ColourTo(i, state);
276	state = SCE_P_DEFAULT;
277	}
278	} else if (state == SCE_P_TRIPLE) {
279	if (ch == '\'' && chPrev == '\'' && chPrev2 == '\'') {
280	styler.ColourTo(i, state);
281	state = SCE_P_DEFAULT;
282	}
283	} else if (state == SCE_P_TRIPLEDOUBLE) {
284	// =end terminates the comment block
285	if (ch == 'd' && chPrev == 'n' && chPrev2 == 'e') {
286	if (styler.SafeGetCharAt(i - 3) == '=') {
287	styler.ColourTo(i, state);
288	state = SCE_P_DEFAULT;
289	}
290	}
291	}
292	}
293	chPrev2 = chPrev;
294	chPrev = ch;
295	}
296	if (state == SCE_P_WORD) {
1a2fb4cd	297	ClassifyWordRb(styler.GetStartSegment(), lengthDoc-1, keywords, styler, prevWord);
65ec6247	298	} else {
1a2fb4cd	299	styler.ColourTo(lengthDoc-1, state);
65ec6247 RD	300	}
	301	}
	302
	303	static void FoldRbDoc(unsigned int startPos, int length, int initStyle,
	304	WordList *[], Accessor &styler) {
	305	int lengthDoc = startPos + length;
	306
	307	// Backtrack to previous line in case need to fix its fold status
	308	int lineCurrent = styler.GetLine(startPos);
	309	if (startPos > 0) {
	310	if (lineCurrent > 0) {
	311	lineCurrent--;
	312	startPos = styler.LineStart(lineCurrent);
	313	if (startPos == 0)
	314	initStyle = SCE_P_DEFAULT;
	315	else
	316	initStyle = styler.StyleAt(startPos-1);
	317	}
	318	}
	319	int state = initStyle & 31;
	320	int spaceFlags = 0;
	321	int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsRbComment);
	322	if ((state == SCE_P_TRIPLE) \|\| (state == SCE_P_TRIPLEDOUBLE))
	323	indentCurrent \|= SC_FOLDLEVELWHITEFLAG;
	324	char chNext = styler[startPos];
	325	for (int i = startPos; i < lengthDoc; i++) {
	326	char ch = chNext;
	327	chNext = styler.SafeGetCharAt(i + 1);
	328	int style = styler.StyleAt(i) & 31;
	329
	330	if ((ch == '\r' && chNext != '\n') \|\| (ch == '\n') \|\| (i == lengthDoc)) {
	331	int lev = indentCurrent;
	332	int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsRbComment);
	333	if ((style == SCE_P_TRIPLE) \|\| (style== SCE_P_TRIPLEDOUBLE))
	334	indentNext \|= SC_FOLDLEVELWHITEFLAG;
	335	if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
	336	// Only non whitespace lines can be headers
	337	if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
	338	lev \|= SC_FOLDLEVELHEADERFLAG;
	339	} else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
	340	// Line after is blank so check the next - maybe should continue further?
	341	int spaceFlags2 = 0;
	342	int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsRbComment);
	343	if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
	344	lev \|= SC_FOLDLEVELHEADERFLAG;
	345	}
	346	}
	347	}
	348	indentCurrent = indentNext;
	349	styler.SetLevel(lineCurrent, lev);
	350	lineCurrent++;
	351	}
	352	}
	353	}
	354
	355	LexerModule lmRuby(SCLEX_RUBY, ColouriseRbDoc, "ruby", FoldRbDoc);