jscoverage/trunk/highlight.c

/*
    highlight.c - JavaScript syntax highlighting
    Copyright (C) 2008 siliconforks.com

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include <config.h>

#include "highlight.h"

#include <assert.h>
#include <stdlib.h>
#include <string.h>

#include <jslock.h>
#include <jsscan.h>

#include "util.h"

enum Class {
  CLASS_NONE,
  CLASS_COMMENT,
  CLASS_REGEXP,
  CLASS_NUMBER,
  CLASS_STRING,
  CLASS_SPECIALCHAR,
  CLASS_KEYWORD,
  CLASS_TYPE,
  CLASS_SYMBOL,
  CLASS_CBRACKET
};

static const char * get_class_name(enum Class class) {
  switch (class) {
  case CLASS_NONE:
    abort();
    break;
  case CLASS_COMMENT:
    return "c";
    break;
  case CLASS_REGEXP:
    return "s";
    break;
  case CLASS_NUMBER:
    return "s";
    break;
  case CLASS_STRING:
    return "s";
    break;
  case CLASS_SPECIALCHAR:
    return "t";
    break;
  case CLASS_KEYWORD:
    return "k";
    break;
  case CLASS_TYPE:
    return "k";
    break;
  case CLASS_SYMBOL:
    return "k";
    break;
  case CLASS_CBRACKET:
    return "k";
    break;
  default:
    abort();
    break;
  }
}

static const char * g_id;
static const jschar * g_characters;
static size_t g_num_characters;
static Stream * g_output;
static size_t character_offset;
static uint16_t line_num;
static uint16_t column_num;
static enum Class current_class;

static void output_character(jschar c, enum Class class) {
  if (class != current_class) {
    /* output the end tag */
    if (current_class != CLASS_NONE) {
      Stream_write_string(g_output, "</span>");
    }

    current_class = class;

    /* output the start tag */
    if (current_class != CLASS_NONE) {
      Stream_printf(g_output, "<span class=\"%s\">", get_class_name(class));
    }
  }

  switch (c) {
  case '&':
    Stream_write_string(g_output, "&amp;");
    break;
  case '<':
    Stream_write_string(g_output, "&lt;");
    break;
  case '>':
    Stream_write_string(g_output, "&gt;");
    break;
  case '\t':
  case '\n':
    Stream_write_char(g_output, c);
    break;
  default:
    if (32 <= c && c <= 126) {
      Stream_write_char(g_output, c);
    }
    else {
      Stream_printf(g_output, "&#%d;", c);
    }
    break;
  }
}

static void mark_nontoken_chars(uint16_t end_line, uint16_t end_column) {
  enum State {
    STATE_NORMAL,
    STATE_LINE_COMMENT,
    STATE_MULTILINE_COMMENT
  };

  enum State state = STATE_NORMAL;
  while (character_offset < g_num_characters) {
    if (end_line != 0 && line_num > end_line) {
      break;
    }
    else if (line_num == end_line && column_num >= end_column) {
      break;
    }

    jschar c = g_characters[character_offset];
    if (c == '\0') {
      fatal("%s: script contains NULL character", g_id);
    }

    switch (state) {
    case STATE_NORMAL:
      if (c == '/' && character_offset + 1 < g_num_characters && g_characters[character_offset + 1] == '/') {
        state = STATE_LINE_COMMENT;
      }
      else if (c == '/' && character_offset + 1 < g_num_characters && g_characters[character_offset + 1] == '*') {
        state = STATE_MULTILINE_COMMENT;
        output_character('/', CLASS_COMMENT);
        output_character('*', CLASS_COMMENT);
        character_offset += 2;
        if (column_num >= UINT16_MAX - 1) {
          fatal("%s: script contains line with more than 65,535 characters", g_id);
        }
        column_num += 2;
        continue;
      }
      break;
    case STATE_LINE_COMMENT:
      if (c == '\r' || c == '\n' || c == 0x2028 || c == 0x2029) {
        state = STATE_NORMAL;
      }
      break;
    case STATE_MULTILINE_COMMENT:
      if (c == '*' && character_offset + 1 < g_num_characters && g_characters[character_offset + 1] == '/') {
        output_character('*', CLASS_COMMENT);
        output_character('/', CLASS_COMMENT);
        state = STATE_NORMAL;
        character_offset += 2;
        if (column_num >= UINT16_MAX - 1) {
          fatal("%s: script contains line with more than 65,535 characters", g_id);
        }
        column_num += 2;
        continue;
      }
      break;
    }

    character_offset++;
    if (c == '\r' || c == '\n' || c == 0x2028 || c == 0x2029) {
      if (line_num == UINT16_MAX) {
        fatal("%s: script contains more than 65,535 lines", g_id);
      }
      line_num++;
      column_num = 0;
      if (c == '\r' && character_offset < g_num_characters && g_characters[character_offset] == '\n') {
        character_offset++;
      }
      output_character('\n', CLASS_NONE);
    }
    else {
      if (column_num == UINT16_MAX) {
        fatal("%s: script contains line with more than 65,535 characters", g_id);
      }
      column_num++;
      if (state == STATE_NORMAL) {
        output_character(c, CLASS_NONE);
      }
      else {
        output_character(c, CLASS_COMMENT);
      }
    }
  }
}

void jscoverage_highlight_js(JSContext * context, const char * id, const jschar * characters, size_t num_characters, Stream * output) {
  g_id = id;
  g_characters = characters;
  g_num_characters = num_characters;
  g_output = output;

  character_offset = 0;
  line_num = 1;
  column_num = 0;
  current_class = CLASS_NONE;

  /* tokenize the JavaScript */
  JSTokenStream * token_stream = js_NewTokenStream(context, characters, num_characters, NULL, 1, NULL);
  if (token_stream == NULL) {
    fatal("cannot create token stream from JavaScript file %s", id);
  }

    /* see js_ParseTokenStream in jsparse.c */
    JSObject * chain = NULL;
    JSContext * cx = context;
    JSStackFrame *fp, frame;

    /*
     * Push a compiler frame if we have no frames, or if the top frame is a
     * lightweight function activation, or if its scope chain doesn't match
     * the one passed to us.
     */
    fp = cx->fp;
    if (!fp || !fp->varobj || fp->scopeChain != chain) {
        memset(&frame, 0, sizeof frame);
        frame.varobj = frame.scopeChain = chain;
        if (cx->options & JSOPTION_VAROBJFIX) {
            while ((chain = JS_GetParent(cx, chain)) != NULL)
                frame.varobj = chain;
        }
        frame.down = fp;
        if (fp)
            frame.flags = fp->flags & (JSFRAME_SPECIAL | JSFRAME_COMPILE_N_GO);
        cx->fp = &frame;
    }

    /*
     * Protect atoms from being collected by a GC activation, which might
     * - nest on this thread due to out of memory (the so-called "last ditch"
     *   GC attempted within js_NewGCThing), or
     * - run for any reason on another thread if this thread is suspended on
     *   an object lock before it finishes generating bytecode into a script
     *   protected from the GC by a root or a stack frame reference.
     */
    JS_KEEP_ATOMS(cx->runtime);

  for (;;) {
    JSTokenType tt = js_GetToken(context, token_stream);

    if (tt == TOK_ERROR) {
      fatal("JavaScript parse error: %s: line = %d, col = %d\n", id, line_num, column_num);
    }

    if (tt == TOK_EOF) {
      mark_nontoken_chars(0, 0);
      break;
    }

    /* mark the chars before the token */
    JSToken t = CURRENT_TOKEN(token_stream);
    mark_nontoken_chars(t.pos.begin.lineno, t.pos.begin.index);

    /* mark the token */
    enum Class class;
    switch (tt) {
    case TOK_ERROR:
    case TOK_EOF:
      abort();
    case TOK_EOL:
      class = CLASS_NONE;
      token_stream->flags |= TSF_OPERAND;
      break;
    case TOK_SEMI:
    case TOK_COMMA:
    case TOK_ASSIGN:
    case TOK_HOOK:
    case TOK_COLON:
    case TOK_OR:
    case TOK_AND:
    case TOK_BITOR:
    case TOK_BITXOR:
    case TOK_BITAND:
    case TOK_EQOP:
    case TOK_RELOP:
    case TOK_SHOP:
    case TOK_PLUS:
    case TOK_MINUS:
    case TOK_STAR:
    case TOK_DIVOP:
      class = CLASS_SYMBOL;
      token_stream->flags |= TSF_OPERAND;
      break;
    case TOK_UNARYOP:
      switch (t.t_op) {
      case JSOP_NEG:
      case JSOP_POS:
      case JSOP_NOT:
      case JSOP_BITNOT:
        class = CLASS_SYMBOL;
        token_stream->flags |= TSF_OPERAND;
        break;
      case JSOP_TYPEOF:
        class = CLASS_KEYWORD;
        token_stream->flags |= TSF_OPERAND;
        break;
      case JSOP_VOID:
        class = CLASS_TYPE;
        token_stream->flags |= TSF_OPERAND;
        break;
      default:
        abort();
      }
      break;
    case TOK_INC:
    case TOK_DEC:
    case TOK_DOT:
    case TOK_LB:
      class = CLASS_SYMBOL;
      token_stream->flags |= TSF_OPERAND;
      break;
    case TOK_RB:
      class = CLASS_SYMBOL;
      token_stream->flags &= ~TSF_OPERAND;
      break;
    case TOK_LC:
      class = CLASS_CBRACKET;
      token_stream->flags |= TSF_OPERAND;
      break;
    case TOK_RC:
      class = CLASS_CBRACKET;
      token_stream->flags &= ~TSF_OPERAND;
      break;
    case TOK_LP:
      class = CLASS_SYMBOL;
      token_stream->flags |= TSF_OPERAND;
      break;
    case TOK_RP:
      class = CLASS_SYMBOL;
      token_stream->flags &= ~TSF_OPERAND;
      break;
    case TOK_NAME:
      class = CLASS_NONE;
      token_stream->flags &= ~TSF_OPERAND;
      if (js_PeekToken(context, token_stream) == TOK_LP) {
        /* function */
        class = CLASS_NONE;
      }
      break;
    case TOK_NUMBER:
      class = CLASS_NUMBER;
      token_stream->flags &= ~TSF_OPERAND;
      break;
    case TOK_STRING:
      class = CLASS_STRING;
      token_stream->flags &= ~TSF_OPERAND;
      break;
    case TOK_OBJECT:
      class = CLASS_REGEXP;
      token_stream->flags &= ~TSF_OPERAND;
      break;
    case TOK_PRIMARY:
      switch (t.t_op) {
      case JSOP_TRUE:
      case JSOP_FALSE:
      case JSOP_NULL:
      case JSOP_THIS:
        class = CLASS_KEYWORD;
        token_stream->flags &= ~TSF_OPERAND;
        break;
      default:
        abort();
      }
      break;
    case TOK_FUNCTION:
      class = CLASS_KEYWORD;
      token_stream->flags |= TSF_OPERAND;
      break;
    case TOK_EXPORT:
    case TOK_IMPORT:
      abort();
      break;
    case TOK_IF:
    case TOK_ELSE:
    case TOK_SWITCH:
    case TOK_CASE:
    case TOK_DEFAULT:
    case TOK_WHILE:
    case TOK_DO:
    case TOK_FOR:
    case TOK_BREAK:
    case TOK_CONTINUE:
    case TOK_IN:
    case TOK_VAR:
    case TOK_WITH:
    case TOK_RETURN:
    case TOK_NEW:
    case TOK_DELETE:
      token_stream->flags |= TSF_OPERAND;
      class = CLASS_KEYWORD;
      break;
    case TOK_DEFSHARP:
    case TOK_USESHARP:
      abort();
      break;
    case TOK_TRY:
    case TOK_CATCH:
    case TOK_FINALLY:
    case TOK_THROW:
    case TOK_INSTANCEOF:
    case TOK_DEBUGGER:
      token_stream->flags |= TSF_OPERAND;
      class = CLASS_KEYWORD;
      break;
    case TOK_XMLSTAGO:
    case TOK_XMLETAGO:
    case TOK_XMLPTAGC:
    case TOK_XMLTAGC:
    case TOK_XMLNAME:
    case TOK_XMLATTR:
    case TOK_XMLSPACE:
    case TOK_XMLTEXT:
    case TOK_XMLCOMMENT:
    case TOK_XMLCDATA:
    case TOK_XMLPI:
    case TOK_AT:
    case TOK_DBLCOLON:
    case TOK_ANYNAME:
    case TOK_DBLDOT:
    case TOK_FILTER:
    case TOK_XMLELEM:
    case TOK_XMLLIST:
    case TOK_RESERVED:
    case TOK_LIMIT:
      abort();
      break;
    default:
      abort();
      break;
    }

    assert(t.pos.begin.lineno == t.pos.end.lineno);
    if (t.pos.begin.index > t.pos.end.index) {
      fatal("%s: script contains line with more than 65,535 characters", id);
    }
    for (uint16_t i = t.pos.begin.index; i < t.pos.end.index; i++) {
      assert(character_offset < num_characters);
      jschar c = characters[character_offset];
      if (tt == TOK_STRING && c == '\\') {
        output_character(c, CLASS_SPECIALCHAR);
        character_offset++;
        i++;
        assert(character_offset < num_characters);
        c = characters[character_offset];
        output_character(c, CLASS_SPECIALCHAR);
        character_offset++;
      }
      else {
        output_character(c, class);
        character_offset++;
      }
    }

    line_num = t.pos.end.lineno;
    column_num = t.pos.end.index;
  }

  if (current_class != CLASS_NONE) {
    output_character('\n', CLASS_NONE);
  }

  /* cleanup */
  JS_UNKEEP_ATOMS(cx->runtime);
  context->fp = fp;
}
1	/*
2	highlight.c - JavaScript syntax highlighting
3	Copyright (C) 2008 siliconforks.com
4
5	This program is free software; you can redistribute it and/or modify
6	it under the terms of the GNU General Public License as published by
7	the Free Software Foundation; either version 2 of the License, or
8	(at your option) any later version.
9
10	This program is distributed in the hope that it will be useful,
11	but WITHOUT ANY WARRANTY; without even the implied warranty of
12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13	GNU General Public License for more details.
14
15	You should have received a copy of the GNU General Public License along
16	with this program; if not, write to the Free Software Foundation, Inc.,
17	51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18	*/
19
20	#include <config.h>
21
22	#include "highlight.h"
23
24	#include <assert.h>
25	#include <stdlib.h>
26	#include <string.h>
27
28	#include <jslock.h>
29	#include <jsscan.h>
30
31	#include "util.h"
32
33	enum Class {
34	CLASS_NONE,
35	CLASS_COMMENT,
36	CLASS_REGEXP,
37	CLASS_NUMBER,
38	CLASS_STRING,
39	CLASS_SPECIALCHAR,
40	CLASS_KEYWORD,
41	CLASS_TYPE,
42	CLASS_SYMBOL,
43	CLASS_CBRACKET
44	};
45
46	static const char * get_class_name(enum Class class) {
47	switch (class) {
48	case CLASS_NONE:
49	abort();
50	break;
51	case CLASS_COMMENT:
52	return "c";
53	break;
54	case CLASS_REGEXP:
55	return "s";
56	break;
57	case CLASS_NUMBER:
58	return "s";
59	break;
60	case CLASS_STRING:
61	return "s";
62	break;
63	case CLASS_SPECIALCHAR:
64	return "t";
65	break;
66	case CLASS_KEYWORD:
67	return "k";
68	break;
69	case CLASS_TYPE:
70	return "k";
71	break;
72	case CLASS_SYMBOL:
73	return "k";
74	break;
75	case CLASS_CBRACKET:
76	return "k";
77	break;
78	default:
79	abort();
80	break;
81	}
82	}
83
84	static const char * g_id;
85	static const jschar * g_characters;
86	static size_t g_num_characters;
87	static Stream * g_output;
88	static size_t character_offset;
89	static uint16_t line_num;
90	static uint16_t column_num;
91	static enum Class current_class;
92
93	static void output_character(jschar c, enum Class class) {
94	if (class != current_class) {
95	/* output the end tag */
96	if (current_class != CLASS_NONE) {
97	Stream_write_string(g_output, "</span>");
98	}
99
100	current_class = class;
101
102	/* output the start tag */
103	if (current_class != CLASS_NONE) {
104	Stream_printf(g_output, "<span class=\"%s\">", get_class_name(class));
105	}
106	}
107
108	switch (c) {
109	case '&':
110	Stream_write_string(g_output, "&");
111	break;
112	case '<':
113	Stream_write_string(g_output, "<");
114	break;
115	case '>':
116	Stream_write_string(g_output, ">");
117	break;
118	case '\t':
119	case '\n':
120	Stream_write_char(g_output, c);
121	break;
122	default:
123	if (32 <= c && c <= 126) {
124	Stream_write_char(g_output, c);
125	}
126	else {
127	Stream_printf(g_output, "&#%d;", c);
128	}
129	break;
130	}
131	}
132
133	static void mark_nontoken_chars(uint16_t end_line, uint16_t end_column) {
134	enum State {
135	STATE_NORMAL,
136	STATE_LINE_COMMENT,
137	STATE_MULTILINE_COMMENT
138	};
139
140	enum State state = STATE_NORMAL;
141	while (character_offset < g_num_characters) {
142	if (end_line != 0 && line_num > end_line) {
143	break;
144	}
145	else if (line_num == end_line && column_num >= end_column) {
146	break;
147	}
148
149	jschar c = g_characters[character_offset];
150	if (c == '\0') {
151	fatal("%s: script contains NULL character", g_id);
152	}
153
154	switch (state) {
155	case STATE_NORMAL:
156	if (c == '/' && character_offset + 1 < g_num_characters && g_characters[character_offset + 1] == '/') {
157	state = STATE_LINE_COMMENT;
158	}
159	else if (c == '/' && character_offset + 1 < g_num_characters && g_characters[character_offset + 1] == '*') {
160	state = STATE_MULTILINE_COMMENT;
161	output_character('/', CLASS_COMMENT);
162	output_character('*', CLASS_COMMENT);
163	character_offset += 2;
164	if (column_num >= UINT16_MAX - 1) {
165	fatal("%s: script contains line with more than 65,535 characters", g_id);
166	}
167	column_num += 2;
168	continue;
169	}
170	break;
171	case STATE_LINE_COMMENT:
172	if (c == '\r' \|\| c == '\n' \|\| c == 0x2028 \|\| c == 0x2029) {
173	state = STATE_NORMAL;
174	}
175	break;
176	case STATE_MULTILINE_COMMENT:
177	if (c == '*' && character_offset + 1 < g_num_characters && g_characters[character_offset + 1] == '/') {
178	output_character('*', CLASS_COMMENT);
179	output_character('/', CLASS_COMMENT);
180	state = STATE_NORMAL;
181	character_offset += 2;
182	if (column_num >= UINT16_MAX - 1) {
183	fatal("%s: script contains line with more than 65,535 characters", g_id);
184	}
185	column_num += 2;
186	continue;
187	}
188	break;
189	}
190
191	character_offset++;
192	if (c == '\r' \|\| c == '\n' \|\| c == 0x2028 \|\| c == 0x2029) {
193	if (line_num == UINT16_MAX) {
194	fatal("%s: script contains more than 65,535 lines", g_id);
195	}
196	line_num++;
197	column_num = 0;
198	if (c == '\r' && character_offset < g_num_characters && g_characters[character_offset] == '\n') {
199	character_offset++;
200	}
201	output_character('\n', CLASS_NONE);
202	}
203	else {
204	if (column_num == UINT16_MAX) {
205	fatal("%s: script contains line with more than 65,535 characters", g_id);
206	}
207	column_num++;
208	if (state == STATE_NORMAL) {
209	output_character(c, CLASS_NONE);
210	}
211	else {
212	output_character(c, CLASS_COMMENT);
213	}
214	}
215	}
216	}
217
218	void jscoverage_highlight_js(JSContext * context, const char * id, const jschar * characters, size_t num_characters, Stream * output) {
219	g_id = id;
220	g_characters = characters;
221	g_num_characters = num_characters;
222	g_output = output;
223
224	character_offset = 0;
225	line_num = 1;
226	column_num = 0;
227	current_class = CLASS_NONE;
228
229	/* tokenize the JavaScript */
230	JSTokenStream * token_stream = js_NewTokenStream(context, characters, num_characters, NULL, 1, NULL);
231	if (token_stream == NULL) {
232	fatal("cannot create token stream from JavaScript file %s", id);
233	}
234
235	/* see js_ParseTokenStream in jsparse.c */
236	JSObject * chain = NULL;
237	JSContext * cx = context;
238	JSStackFrame *fp, frame;
239
240	/*
241	* Push a compiler frame if we have no frames, or if the top frame is a
242	* lightweight function activation, or if its scope chain doesn't match
243	* the one passed to us.
244	*/
245	fp = cx->fp;
246	if (!fp \|\| !fp->varobj \|\| fp->scopeChain != chain) {
247	memset(&frame, 0, sizeof frame);
248	frame.varobj = frame.scopeChain = chain;
249	if (cx->options & JSOPTION_VAROBJFIX) {
250	while ((chain = JS_GetParent(cx, chain)) != NULL)
251	frame.varobj = chain;
252	}
253	frame.down = fp;
254	if (fp)
255	frame.flags = fp->flags & (JSFRAME_SPECIAL \| JSFRAME_COMPILE_N_GO);
256	cx->fp = &frame;
257	}
258
259	/*
260	* Protect atoms from being collected by a GC activation, which might
261	* - nest on this thread due to out of memory (the so-called "last ditch"
262	* GC attempted within js_NewGCThing), or
263	* - run for any reason on another thread if this thread is suspended on
264	* an object lock before it finishes generating bytecode into a script
265	* protected from the GC by a root or a stack frame reference.
266	*/
267	JS_KEEP_ATOMS(cx->runtime);
268
269	for (;;) {
270	JSTokenType tt = js_GetToken(context, token_stream);
271
272	if (tt == TOK_ERROR) {
273	fatal("JavaScript parse error: %s: line = %d, col = %d\n", id, line_num, column_num);
274	}
275
276	if (tt == TOK_EOF) {
277	mark_nontoken_chars(0, 0);
278	break;
279	}
280
281	/* mark the chars before the token */
282	JSToken t = CURRENT_TOKEN(token_stream);
283	mark_nontoken_chars(t.pos.begin.lineno, t.pos.begin.index);
284
285	/* mark the token */
286	enum Class class;
287	switch (tt) {
288	case TOK_ERROR:
289	case TOK_EOF:
290	abort();
291	case TOK_EOL:
292	class = CLASS_NONE;
293	token_stream->flags \|= TSF_OPERAND;
294	break;
295	case TOK_SEMI:
296	case TOK_COMMA:
297	case TOK_ASSIGN:
298	case TOK_HOOK:
299	case TOK_COLON:
300	case TOK_OR:
301	case TOK_AND:
302	case TOK_BITOR:
303	case TOK_BITXOR:
304	case TOK_BITAND:
305	case TOK_EQOP:
306	case TOK_RELOP:
307	case TOK_SHOP:
308	case TOK_PLUS:
309	case TOK_MINUS:
310	case TOK_STAR:
311	case TOK_DIVOP:
312	class = CLASS_SYMBOL;
313	token_stream->flags \|= TSF_OPERAND;
314	break;
315	case TOK_UNARYOP:
316	switch (t.t_op) {
317	case JSOP_NEG:
318	case JSOP_POS:
319	case JSOP_NOT:
320	case JSOP_BITNOT:
321	class = CLASS_SYMBOL;
322	token_stream->flags \|= TSF_OPERAND;
323	break;
324	case JSOP_TYPEOF:
325	class = CLASS_KEYWORD;
326	token_stream->flags \|= TSF_OPERAND;
327	break;
328	case JSOP_VOID:
329	class = CLASS_TYPE;
330	token_stream->flags \|= TSF_OPERAND;
331	break;
332	default:
333	abort();
334	}
335	break;
336	case TOK_INC:
337	case TOK_DEC:
338	case TOK_DOT:
339	case TOK_LB:
340	class = CLASS_SYMBOL;
341	token_stream->flags \|= TSF_OPERAND;
342	break;
343	case TOK_RB:
344	class = CLASS_SYMBOL;
345	token_stream->flags &= ~TSF_OPERAND;
346	break;
347	case TOK_LC:
348	class = CLASS_CBRACKET;
349	token_stream->flags \|= TSF_OPERAND;
350	break;
351	case TOK_RC:
352	class = CLASS_CBRACKET;
353	token_stream->flags &= ~TSF_OPERAND;
354	break;
355	case TOK_LP:
356	class = CLASS_SYMBOL;
357	token_stream->flags \|= TSF_OPERAND;
358	break;
359	case TOK_RP:
360	class = CLASS_SYMBOL;
361	token_stream->flags &= ~TSF_OPERAND;
362	break;
363	case TOK_NAME:
364	class = CLASS_NONE;
365	token_stream->flags &= ~TSF_OPERAND;
366	if (js_PeekToken(context, token_stream) == TOK_LP) {
367	/* function */
368	class = CLASS_NONE;
369	}
370	break;
371	case TOK_NUMBER:
372	class = CLASS_NUMBER;
373	token_stream->flags &= ~TSF_OPERAND;
374	break;
375	case TOK_STRING:
376	class = CLASS_STRING;
377	token_stream->flags &= ~TSF_OPERAND;
378	break;
379	case TOK_OBJECT:
380	class = CLASS_REGEXP;
381	token_stream->flags &= ~TSF_OPERAND;
382	break;
383	case TOK_PRIMARY:
384	switch (t.t_op) {
385	case JSOP_TRUE:
386	case JSOP_FALSE:
387	case JSOP_NULL:
388	case JSOP_THIS:
389	class = CLASS_KEYWORD;
390	token_stream->flags &= ~TSF_OPERAND;
391	break;
392	default:
393	abort();
394	}
395	break;
396	case TOK_FUNCTION:
397	class = CLASS_KEYWORD;
398	token_stream->flags \|= TSF_OPERAND;
399	break;
400	case TOK_EXPORT:
401	case TOK_IMPORT:
402	abort();
403	break;
404	case TOK_IF:
405	case TOK_ELSE:
406	case TOK_SWITCH:
407	case TOK_CASE:
408	case TOK_DEFAULT:
409	case TOK_WHILE:
410	case TOK_DO:
411	case TOK_FOR:
412	case TOK_BREAK:
413	case TOK_CONTINUE:
414	case TOK_IN:
415	case TOK_VAR:
416	case TOK_WITH:
417	case TOK_RETURN:
418	case TOK_NEW:
419	case TOK_DELETE:
420	token_stream->flags \|= TSF_OPERAND;
421	class = CLASS_KEYWORD;
422	break;
423	case TOK_DEFSHARP:
424	case TOK_USESHARP:
425	abort();
426	break;
427	case TOK_TRY:
428	case TOK_CATCH:
429	case TOK_FINALLY:
430	case TOK_THROW:
431	case TOK_INSTANCEOF:
432	case TOK_DEBUGGER:
433	token_stream->flags \|= TSF_OPERAND;
434	class = CLASS_KEYWORD;
435	break;
436	case TOK_XMLSTAGO:
437	case TOK_XMLETAGO:
438	case TOK_XMLPTAGC:
439	case TOK_XMLTAGC:
440	case TOK_XMLNAME:
441	case TOK_XMLATTR:
442	case TOK_XMLSPACE:
443	case TOK_XMLTEXT:
444	case TOK_XMLCOMMENT:
445	case TOK_XMLCDATA:
446	case TOK_XMLPI:
447	case TOK_AT:
448	case TOK_DBLCOLON:
449	case TOK_ANYNAME:
450	case TOK_DBLDOT:
451	case TOK_FILTER:
452	case TOK_XMLELEM:
453	case TOK_XMLLIST:
454	case TOK_RESERVED:
455	case TOK_LIMIT:
456	abort();
457	break;
458	default:
459	abort();
460	break;
461	}
462
463	assert(t.pos.begin.lineno == t.pos.end.lineno);
464	if (t.pos.begin.index > t.pos.end.index) {
465	fatal("%s: script contains line with more than 65,535 characters", id);
466	}
467	for (uint16_t i = t.pos.begin.index; i < t.pos.end.index; i++) {
468	assert(character_offset < num_characters);
469	jschar c = characters[character_offset];
470	if (tt == TOK_STRING && c == '\\') {
471	output_character(c, CLASS_SPECIALCHAR);
472	character_offset++;
473	i++;
474	assert(character_offset < num_characters);
475	c = characters[character_offset];
476	output_character(c, CLASS_SPECIALCHAR);
477	character_offset++;
478	}
479	else {
480	output_character(c, class);
481	character_offset++;
482	}
483	}
484
485	line_num = t.pos.end.lineno;
486	column_num = t.pos.end.index;
487	}
488
489	if (current_class != CLASS_NONE) {
490	output_character('\n', CLASS_NONE);
491	}
492
493	/* cleanup */
494	JS_UNKEEP_ATOMS(cx->runtime);
495	context->fp = fp;
496	}