moving trunk for module inkscape

(bzr r1)

1 files changed, 439 insertions, 0 deletions

diff --git a/src/dom/js/jsstr.h b/src/dom/js/jsstr.h
new file mode 100644
index 000000000..94ebe97b9
--- /dev/null
+++ b/src/dom/js/jsstr.h
@@ -0,0 +1,439 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef jsstr_h___
+#define jsstr_h___
+/*
+ * JS string type implementation.
+ *
+ * A JS string is a counted array of unicode characters.  To support handoff
+ * of API client memory, the chars are allocated separately from the length,
+ * necessitating a pointer after the count, to form a separately allocated
+ * string descriptor.  String descriptors are GC'ed, while their chars are
+ * allocated from the malloc heap.
+ *
+ * When a string is treated as an object (by following it with . or []), the
+ * runtime wraps it with a JSObject whose valueOf method returns the unwrapped
+ * string descriptor.
+ */
+#include <ctype.h>
+#include "jspubtd.h"
+#include "jsprvtd.h"
+#include "jshash.h"
+
+JS_BEGIN_EXTERN_C
+
+/*
+ * The original GC-thing "string" type, a flat character string owned by its
+ * GC-thing descriptor.  The chars member points to a vector having byte size
+ * (length + 1) * sizeof(jschar), terminated at index length by a zero jschar.
+ * The terminator is purely a backstop, in case the chars pointer flows out to
+ * native code that requires \u0000 termination.
+ *
+ * NB: Always use the JSSTRING_LENGTH and JSSTRING_CHARS accessor macros,
+ * unless you guard str->member uses with !JSSTRING_IS_DEPENDENT(str).
+ */
+struct JSString {
+    size_t          length;
+    jschar          *chars;
+};
+
+/*
+ * Overlay structure for a string that depends on another string's characters.
+ * Distinguished by the JSSTRFLAG_DEPENDENT bit being set in length.  The base
+ * member may point to another dependent string if JSSTRING_CHARS has not been
+ * called yet.  The length chars in a dependent string are stored starting at
+ * base->chars + start, and are not necessarily zero-terminated.  If start is
+ * 0, it is not stored, length is a full size_t (minus the JSSTRFLAG_* bits in
+ * the high two positions), and the JSSTRFLAG_PREFIX flag is set.
+ */
+struct JSDependentString {
+    size_t          length;
+    JSString        *base;
+};
+
+/* Definitions for flags stored in the high order bits of JSString.length. */
+#define JSSTRFLAG_BITS              2
+#define JSSTRFLAG_SHIFT(flg)        ((size_t)(flg) << JSSTRING_LENGTH_BITS)
+#define JSSTRFLAG_MASK              JSSTRFLAG_SHIFT(JS_BITMASK(JSSTRFLAG_BITS))
+#define JSSTRFLAG_DEPENDENT         JSSTRFLAG_SHIFT(1)
+#define JSSTRFLAG_PREFIX            JSSTRFLAG_SHIFT(2)
+
+/* Universal JSString type inquiry and accessor macros. */
+#define JSSTRING_BIT(n)             ((size_t)1 << (n))
+#define JSSTRING_BITMASK(n)         (JSSTRING_BIT(n) - 1)
+#define JSSTRING_HAS_FLAG(str,flg)  ((str)->length & (flg))
+#define JSSTRING_IS_DEPENDENT(str)  JSSTRING_HAS_FLAG(str, JSSTRFLAG_DEPENDENT)
+#define JSSTRING_IS_PREFIX(str)     JSSTRING_HAS_FLAG(str, JSSTRFLAG_PREFIX)
+#define JSSTRING_CHARS(str)         (JSSTRING_IS_DEPENDENT(str)               \
+                                     ? JSSTRDEP_CHARS(str)                    \
+                                     : (str)->chars)
+#define JSSTRING_LENGTH(str)        (JSSTRING_IS_DEPENDENT(str)               \
+                                     ? JSSTRDEP_LENGTH(str)                   \
+                                     : (str)->length)
+#define JSSTRING_LENGTH_BITS        (sizeof(size_t) * JS_BITS_PER_BYTE        \
+                                     - JSSTRFLAG_BITS)
+#define JSSTRING_LENGTH_MASK        JSSTRING_BITMASK(JSSTRING_LENGTH_BITS)
+
+/* Specific JSDependentString shift/mask accessor and mutator macros. */
+#define JSSTRDEP_START_BITS         (JSSTRING_LENGTH_BITS-JSSTRDEP_LENGTH_BITS)
+#define JSSTRDEP_START_SHIFT        JSSTRDEP_LENGTH_BITS
+#define JSSTRDEP_START_MASK         JSSTRING_BITMASK(JSSTRDEP_START_BITS)
+#define JSSTRDEP_LENGTH_BITS        (JSSTRING_LENGTH_BITS / 2)
+#define JSSTRDEP_LENGTH_MASK        JSSTRING_BITMASK(JSSTRDEP_LENGTH_BITS)
+
+#define JSSTRDEP(str)               ((JSDependentString *)(str))
+#define JSSTRDEP_START(str)         (JSSTRING_IS_PREFIX(str) ? 0              \
+                                     : ((JSSTRDEP(str)->length                \
+                                         >> JSSTRDEP_START_SHIFT)             \
+                                        & JSSTRDEP_START_MASK))
+#define JSSTRDEP_LENGTH(str)        (JSSTRDEP(str)->length                    \
+                                     & (JSSTRING_IS_PREFIX(str)               \
+                                        ? JSSTRING_LENGTH_MASK                \
+                                        : JSSTRDEP_LENGTH_MASK))
+
+#define JSSTRDEP_SET_START_AND_LENGTH(str,off,len)                            \
+    (JSSTRDEP(str)->length = JSSTRFLAG_DEPENDENT                              \
+                           | ((off) << JSSTRDEP_START_SHIFT)                  \
+                           | (len))
+#define JSPREFIX_SET_LENGTH(str,len)                                          \
+    (JSSTRDEP(str)->length = JSSTRFLAG_DEPENDENT | JSSTRFLAG_PREFIX | (len))
+
+#define JSSTRDEP_BASE(str)          (JSSTRDEP(str)->base)
+#define JSSTRDEP_SET_BASE(str,bstr) (JSSTRDEP(str)->base = (bstr))
+#define JSPREFIX_BASE(str)          JSSTRDEP_BASE(str)
+#define JSPREFIX_SET_BASE(str,bstr) JSSTRDEP_SET_BASE(str,bstr)
+
+#define JSSTRDEP_CHARS(str)                                                   \
+    (JSSTRING_IS_DEPENDENT(JSSTRDEP_BASE(str))                                \
+     ? js_GetDependentStringChars(str)                                        \
+     : JSSTRDEP_BASE(str)->chars + JSSTRDEP_START(str))
+
+extern size_t
+js_MinimizeDependentStrings(JSString *str, int level, JSString **basep);
+
+extern jschar *
+js_GetDependentStringChars(JSString *str);
+
+extern jschar *
+js_GetStringChars(JSString *str);
+
+extern JSString *
+js_ConcatStrings(JSContext *cx, JSString *left, JSString *right);
+
+extern const jschar *
+js_UndependString(JSContext *cx, JSString *str);
+
+struct JSSubString {
+    size_t          length;
+    const jschar    *chars;
+};
+
+extern jschar      js_empty_ucstr[];
+extern JSSubString js_EmptySubString;
+
+/* Unicode character attribute lookup tables. */
+extern const uint8 js_X[];
+extern const uint8 js_Y[];
+extern const uint32 js_A[];
+
+/* Enumerated Unicode general category types. */
+typedef enum JSCharType {
+    JSCT_UNASSIGNED             = 0,
+    JSCT_UPPERCASE_LETTER       = 1,
+    JSCT_LOWERCASE_LETTER       = 2,
+    JSCT_TITLECASE_LETTER       = 3,
+    JSCT_MODIFIER_LETTER        = 4,
+    JSCT_OTHER_LETTER           = 5,
+    JSCT_NON_SPACING_MARK       = 6,
+    JSCT_ENCLOSING_MARK         = 7,
+    JSCT_COMBINING_SPACING_MARK = 8,
+    JSCT_DECIMAL_DIGIT_NUMBER   = 9,
+    JSCT_LETTER_NUMBER          = 10,
+    JSCT_OTHER_NUMBER           = 11,
+    JSCT_SPACE_SEPARATOR        = 12,
+    JSCT_LINE_SEPARATOR         = 13,
+    JSCT_PARAGRAPH_SEPARATOR    = 14,
+    JSCT_CONTROL                = 15,
+    JSCT_FORMAT                 = 16,
+    JSCT_PRIVATE_USE            = 18,
+    JSCT_SURROGATE              = 19,
+    JSCT_DASH_PUNCTUATION       = 20,
+    JSCT_START_PUNCTUATION      = 21,
+    JSCT_END_PUNCTUATION        = 22,
+    JSCT_CONNECTOR_PUNCTUATION  = 23,
+    JSCT_OTHER_PUNCTUATION      = 24,
+    JSCT_MATH_SYMBOL            = 25,
+    JSCT_CURRENCY_SYMBOL        = 26,
+    JSCT_MODIFIER_SYMBOL        = 27,
+    JSCT_OTHER_SYMBOL           = 28
+} JSCharType;
+
+/* Character classifying and mapping macros, based on java.lang.Character. */
+#define JS_CCODE(c)     (js_A[js_Y[(js_X[(uint16)(c)>>6]<<6)|((c)&0x3F)]])
+#define JS_CTYPE(c)     (JS_CCODE(c) & 0x1F)
+
+#define JS_ISALPHA(c)   ((((1 << JSCT_UPPERCASE_LETTER) |                     \
+			   (1 << JSCT_LOWERCASE_LETTER) |                     \
+			   (1 << JSCT_TITLECASE_LETTER) |                     \
+			   (1 << JSCT_MODIFIER_LETTER) |                      \
+			   (1 << JSCT_OTHER_LETTER))                          \
+			  >> JS_CTYPE(c)) & 1)
+
+#define JS_ISALNUM(c)   ((((1 << JSCT_UPPERCASE_LETTER) |                     \
+			   (1 << JSCT_LOWERCASE_LETTER) |                     \
+			   (1 << JSCT_TITLECASE_LETTER) |                     \
+			   (1 << JSCT_MODIFIER_LETTER) |                      \
+			   (1 << JSCT_OTHER_LETTER) |                         \
+			   (1 << JSCT_DECIMAL_DIGIT_NUMBER))                  \
+			  >> JS_CTYPE(c)) & 1)
+
+/* A unicode letter, suitable for use in an identifier. */
+#define JS_ISUC_LETTER(c)   ((((1 << JSCT_UPPERCASE_LETTER) |                 \
+			   (1 << JSCT_LOWERCASE_LETTER) |                     \
+			   (1 << JSCT_TITLECASE_LETTER) |                     \
+			   (1 << JSCT_MODIFIER_LETTER) |                      \
+			   (1 << JSCT_OTHER_LETTER) |                         \
+			   (1 << JSCT_LETTER_NUMBER))                         \
+			  >> JS_CTYPE(c)) & 1)
+
+/*
+* 'IdentifierPart' from ECMA grammar, is Unicode letter or
+* combining mark or digit or connector punctuation.
+*/
+#define JS_ISID_PART(c) ((((1 << JSCT_UPPERCASE_LETTER) |                     \
+			   (1 << JSCT_LOWERCASE_LETTER) |                     \
+			   (1 << JSCT_TITLECASE_LETTER) |                     \
+			   (1 << JSCT_MODIFIER_LETTER) |                      \
+			   (1 << JSCT_OTHER_LETTER) |                         \
+			   (1 << JSCT_LETTER_NUMBER) |                        \
+			   (1 << JSCT_NON_SPACING_MARK) |                     \
+			   (1 << JSCT_COMBINING_SPACING_MARK) |               \
+			   (1 << JSCT_DECIMAL_DIGIT_NUMBER) |                 \
+			   (1 << JSCT_CONNECTOR_PUNCTUATION))                 \
+			  >> JS_CTYPE(c)) & 1)
+
+/* Unicode control-format characters, ignored in input */
+#define JS_ISFORMAT(c) (((1 << JSCT_FORMAT) >> JS_CTYPE(c)) & 1)
+
+#define JS_ISWORD(c)    (JS_ISALNUM(c) || (c) == '_')
+
+/* XXXbe unify on A/X/Y tbls, avoid ctype.h? */
+#define JS_ISIDENT_START(c) (JS_ISUC_LETTER(c) || (c) == '_' || (c) == '$')
+#define JS_ISIDENT(c)       (JS_ISID_PART(c) || (c) == '_' || (c) == '$')
+
+#define JS_ISDIGIT(c)   (JS_CTYPE(c) == JSCT_DECIMAL_DIGIT_NUMBER)
+
+/* XXXbe fs, etc. ? */
+#define JS_ISSPACE(c)   ((JS_CCODE(c) & 0x00070000) == 0x00040000)
+#define JS_ISPRINT(c)   ((c) < 128 && isprint(c))
+
+#define JS_ISUPPER(c)   (JS_CTYPE(c) == JSCT_UPPERCASE_LETTER)
+#define JS_ISLOWER(c)   (JS_CTYPE(c) == JSCT_LOWERCASE_LETTER)
+
+#define JS_TOUPPER(c)   ((JS_CCODE(c) & 0x00100000) ? (c) - ((int32)JS_CCODE(c) >> 22) : (c))
+#define JS_TOLOWER(c)   ((JS_CCODE(c) & 0x00200000) ? (c) + ((int32)JS_CCODE(c) >> 22) : (c))
+
+#define JS_TOCTRL(c)    ((c) ^ 64)      /* XXX unsafe! requires uppercase c */
+
+/* Shorthands for ASCII (7-bit) decimal and hex conversion. */
+#define JS7_ISDEC(c)    ((c) < 128 && isdigit(c))
+#define JS7_UNDEC(c)    ((c) - '0')
+#define JS7_ISHEX(c)    ((c) < 128 && isxdigit(c))
+#define JS7_UNHEX(c)    (uintN)(isdigit(c) ? (c) - '0' : 10 + tolower(c) - 'a')
+#define JS7_ISLET(c)    ((c) < 128 && isalpha(c))
+
+/* Initialize truly global state associated with JS strings. */
+extern JSBool
+js_InitStringGlobals(void);
+
+extern void
+js_FreeStringGlobals(void);
+
+extern void
+js_PurgeDeflatedStringCache(JSString *str);
+
+/* Initialize per-runtime string state for the first context in the runtime. */
+extern JSBool
+js_InitRuntimeStringState(JSContext *cx);
+
+extern void
+js_FinishRuntimeStringState(JSContext *cx);
+
+/* Initialize the String class, returning its prototype object. */
+extern JSObject *
+js_InitStringClass(JSContext *cx, JSObject *obj);
+
+extern const char js_escape_str[];
+extern const char js_unescape_str[];
+extern const char js_uneval_str[];
+extern const char js_decodeURI_str[];
+extern const char js_encodeURI_str[];
+extern const char js_decodeURIComponent_str[];
+extern const char js_encodeURIComponent_str[];
+
+/* GC-allocate a string descriptor for the given malloc-allocated chars. */
+extern JSString *
+js_NewString(JSContext *cx, jschar *chars, size_t length, uintN gcflag);
+
+extern JSString *
+js_NewDependentString(JSContext *cx, JSString *base, size_t start,
+                      size_t length, uintN gcflag);
+
+/* Copy a counted string and GC-allocate a descriptor for it. */
+extern JSString *
+js_NewStringCopyN(JSContext *cx, const jschar *s, size_t n, uintN gcflag);
+
+/* Copy a C string and GC-allocate a descriptor for it. */
+extern JSString *
+js_NewStringCopyZ(JSContext *cx, const jschar *s, uintN gcflag);
+
+/* Free the chars held by str when it is finalized by the GC. */
+extern void
+js_FinalizeString(JSContext *cx, JSString *str);
+
+extern void
+js_FinalizeStringRT(JSRuntime *rt, JSString *str);
+
+/* Wrap a string value in a String object. */
+extern JSObject *
+js_StringToObject(JSContext *cx, JSString *str);
+
+/*
+ * Convert a value to a string, returning null after reporting an error,
+ * otherwise returning a new string reference.
+ */
+extern JSString *
+js_ValueToString(JSContext *cx, jsval v);
+
+/*
+ * Convert a value to its source expression, returning null after reporting
+ * an error, otherwise returning a new string reference.
+ */
+extern JSString *
+js_ValueToSource(JSContext *cx, jsval v);
+
+#ifdef HT_ENUMERATE_NEXT	/* XXX don't require jshash.h */
+/*
+ * Compute a hash function from str.
+ */
+extern JSHashNumber
+js_HashString(JSString *str);
+#endif
+
+/*
+ * Return less than, equal to, or greater than zero depending on whether
+ * str1 is less than, equal to, or greater than str2.
+ */
+extern intN
+js_CompareStrings(JSString *str1, JSString *str2);
+
+/*
+ * Boyer-Moore-Horspool superlinear search for pat:patlen in text:textlen.
+ * The patlen argument must be positive and no greater than BMH_PATLEN_MAX.
+ * The start argument tells where in text to begin the search.
+ *
+ * Return the index of pat in text, or -1 if not found.
+ */
+#define BMH_CHARSET_SIZE 256    /* ISO-Latin-1 */
+#define BMH_PATLEN_MAX   255    /* skip table element is uint8 */
+
+#define BMH_BAD_PATTERN  (-2)   /* return value if pat is not ISO-Latin-1 */
+
+extern jsint
+js_BoyerMooreHorspool(const jschar *text, jsint textlen,
+                      const jschar *pat, jsint patlen,
+                      jsint start);
+
+extern size_t
+js_strlen(const jschar *s);
+
+extern jschar *
+js_strchr(const jschar *s, jschar c);
+
+extern jschar *
+js_strchr_limit(const jschar *s, jschar c, const jschar *limit);
+
+#define js_strncpy(t, s, n)     memcpy((t), (s), (n) * sizeof(jschar))
+
+/*
+ * Return s advanced past any Unicode white space characters.
+ */
+extern const jschar *
+js_SkipWhiteSpace(const jschar *s);
+
+/*
+ * Inflate bytes to JS chars and vice versa.  Report out of memory via cx
+ * and return null on error, otherwise return the jschar or byte vector that
+ * was JS_malloc'ed.
+ */
+extern jschar *
+js_InflateString(JSContext *cx, const char *bytes, size_t length);
+
+extern char *
+js_DeflateString(JSContext *cx, const jschar *chars, size_t length);
+
+/*
+ * Inflate bytes to JS chars into a buffer.
+ * 'chars' must be large enough for 'length'+1 jschars.
+ */
+extern void
+js_InflateStringToBuffer(jschar *chars, const char *bytes, size_t length);
+
+/*
+ * Associate bytes with str in the deflated string cache, returning true on
+ * successful association, false on out of memory.
+ */
+extern JSBool
+js_SetStringBytes(JSString *str, char *bytes, size_t length);
+
+/*
+ * Find or create a deflated string cache entry for str that contains its
+ * characters chopped from Unicode code points into bytes.
+ */
+extern char *
+js_GetStringBytes(JSString *str);
+
+JSBool
+js_str_escape(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
+              jsval *rval);
+
+JS_END_EXTERN_C
+
+#endif /* jsstr_h___ */