*** /dev/null Sat Nov 23 00:53:44 2024
--- - Sat Nov 23 00:54:06 2024
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*** 0 ****
--- 1,2588 ----
+ /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sw=4 et tw=80:
+ *
+ * ***** 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 ***** */
+
+ /*
+ * JS shell.
+ */
+ #include "jsstddef.h"
+ #include <errno.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include "jstypes.h"
+ #include "jsarena.h"
+ #include "jsutil.h"
+ #include "jsprf.h"
+ #include "jsapi.h"
+ #include "jsatom.h"
+ #include "jscntxt.h"
+ #include "jsdbgapi.h"
+ #include "jsemit.h"
+ #include "jsfun.h"
+ #include "jsgc.h"
+ #include "jslock.h"
+ #include "jsobj.h"
+ #include "jsparse.h"
+ #include "jsscope.h"
+ #include "jsscript.h"
+
+ #ifdef OSSP
+ #if JS_HAS_FILE_OBJECT
+ #include "jsfile.h"
+ #endif
+ #endif
+
+ #ifdef PERLCONNECT
+ #include "perlconnect/jsperl.h"
+ #endif
+
+ #ifdef LIVECONNECT
+ #include "jsjava.h"
+ #endif
+
+ #ifdef JSDEBUGGER
+ #include "jsdebug.h"
+ #ifdef JSDEBUGGER_JAVA_UI
+ #include "jsdjava.h"
+ #endif /* JSDEBUGGER_JAVA_UI */
+ #ifdef JSDEBUGGER_C_UI
+ #include "jsdb.h"
+ #endif /* JSDEBUGGER_C_UI */
+ #endif /* JSDEBUGGER */
+
+ #ifdef XP_UNIX
+ #include <unistd.h>
+ #include <sys/types.h>
+ #include <sys/wait.h>
+ #endif
+
+ #if defined(XP_WIN) || defined(XP_OS2)
+ #include <io.h> /* for isatty() */
+ #endif
+
+ #define EXITCODE_RUNTIME_ERROR 3
+ #define EXITCODE_FILE_NOT_FOUND 4
+
+ size_t gStackChunkSize = 8192;
+ static size_t gMaxStackSize = 0;
+ static jsuword gStackBase;
+ int gExitCode = 0;
+ JSBool gQuitting = JS_FALSE;
+ FILE *gErrFile = NULL;
+ FILE *gOutFile = NULL;
+
+ #ifdef JSDEBUGGER
+ static JSDContext *_jsdc;
+ #ifdef JSDEBUGGER_JAVA_UI
+ static JSDJContext *_jsdjc;
+ #endif /* JSDEBUGGER_JAVA_UI */
+ #endif /* JSDEBUGGER */
+
+ static JSBool reportWarnings = JS_TRUE;
+ static JSBool compileOnly = JS_FALSE;
+
+ typedef enum JSShellErrNum {
+ #define MSG_DEF(name, number, count, exception, format) \
+ name = number,
+ #include "jsshell.msg"
+ #undef MSG_DEF
+ JSShellErr_Limit
+ #undef MSGDEF
+ } JSShellErrNum;
+
+ static const JSErrorFormatString *
+ my_GetErrorMessage(void *userRef, const char *locale, const uintN errorNumber);
+
+ #ifdef EDITLINE
+ extern char *readline(const char *prompt);
+ extern void add_history(char *line);
+ #endif
+
+ static JSBool
+ GetLine(JSContext *cx, char *bufp, FILE *file, const char *prompt) {
+ #ifdef EDITLINE
+ /*
+ * Use readline only if file is stdin, because there's no way to specify
+ * another handle. Are other filehandles interactive?
+ */
+ if (file == stdin) {
+ char *linep = readline(prompt);
+ if (!linep)
+ return JS_FALSE;
+ if (linep[0] != '\0')
+ add_history(linep);
+ strcpy(bufp, linep);
+ JS_free(cx, linep);
+ bufp += strlen(bufp);
+ *bufp++ = '\n';
+ *bufp = '\0';
+ } else
+ #endif
+ {
+ char line[256];
+ fprintf(gOutFile, prompt);
+ fflush(gOutFile);
+ if (!fgets(line, sizeof line, file))
+ return JS_FALSE;
+ strcpy(bufp, line);
+ }
+ return JS_TRUE;
+ }
+
+ static void
+ Process(JSContext *cx, JSObject *obj, char *filename)
+ {
+ JSBool ok, hitEOF;
+ JSScript *script;
+ jsval result;
+ JSString *str;
+ char buffer[4096];
+ char *bufp;
+ int lineno;
+ int startline;
+ FILE *file;
+ jsuword stackLimit;
+
+ if (!filename || strcmp(filename, "-") == 0) {
+ file = stdin;
+ } else {
+ file = fopen(filename, "r");
+ if (!file) {
+ JS_ReportErrorNumber(cx, my_GetErrorMessage, NULL,
+ JSSMSG_CANT_OPEN, filename, strerror(errno));
+ gExitCode = EXITCODE_FILE_NOT_FOUND;
+ return;
+ }
+ }
+
+ if (gMaxStackSize == 0) {
+ /*
+ * Disable checking for stack overflow if limit is zero.
+ */
+ stackLimit = 0;
+ } else {
+ #if JS_STACK_GROWTH_DIRECTION > 0
+ stackLimit = gStackBase + gMaxStackSize;
+ #else
+ stackLimit = gStackBase - gMaxStackSize;
+ #endif
+ }
+ JS_SetThreadStackLimit(cx, stackLimit);
+
+ if (!isatty(fileno(file))) {
+ /*
+ * It's not interactive - just execute it.
+ *
+ * Support the UNIX #! shell hack; gobble the first line if it starts
+ * with '#'. TODO - this isn't quite compatible with sharp variables,
+ * as a legal js program (using sharp variables) might start with '#'.
+ * But that would require multi-character lookahead.
+ */
+ int ch = fgetc(file);
+ if (ch == '#') {
+ while((ch = fgetc(file)) != EOF) {
+ if (ch == '\n' || ch == '\r')
+ break;
+ }
+ }
+ ungetc(ch, file);
+ script = JS_CompileFileHandle(cx, obj, filename, file);
+ if (script) {
+ if (!compileOnly)
+ (void)JS_ExecuteScript(cx, obj, script, &result);
+ JS_DestroyScript(cx, script);
+ }
+ return;
+ }
+
+ /* It's an interactive filehandle; drop into read-eval-print loop. */
+ lineno = 1;
+ hitEOF = JS_FALSE;
+ do {
+ bufp = buffer;
+ *bufp = '\0';
+
+ /*
+ * Accumulate lines until we get a 'compilable unit' - one that either
+ * generates an error (before running out of source) or that compiles
+ * cleanly. This should be whenever we get a complete statement that
+ * coincides with the end of a line.
+ */
+ startline = lineno;
+ do {
+ if (!GetLine(cx, bufp, file, startline == lineno ? "js> " : "")) {
+ hitEOF = JS_TRUE;
+ break;
+ }
+ bufp += strlen(bufp);
+ lineno++;
+ } while (!JS_BufferIsCompilableUnit(cx, obj, buffer, strlen(buffer)));
+
+ /* Clear any pending exception from previous failed compiles. */
+ JS_ClearPendingException(cx);
+ script = JS_CompileScript(cx, obj, buffer, strlen(buffer), "typein",
+ startline);
+ if (script) {
+ if (!compileOnly) {
+ ok = JS_ExecuteScript(cx, obj, script, &result);
+ if (ok && result != JSVAL_VOID) {
+ str = JS_ValueToString(cx, result);
+ if (str)
+ fprintf(gOutFile, "%s\n", JS_GetStringBytes(str));
+ else
+ ok = JS_FALSE;
+ }
+ }
+ JS_DestroyScript(cx, script);
+ }
+ } while (!hitEOF && !gQuitting);
+ fprintf(gOutFile, "\n");
+ return;
+ }
+
+ static int
+ usage(void)
+ {
+ fprintf(gErrFile, "%s\n", JS_GetImplementationVersion());
+ fprintf(gErrFile, "usage: js [-PswWxC] [-b branchlimit] [-c stackchunksize] [-v version] [-f scriptfile] [-e script] [-S maxstacksize] [scriptfile] [scriptarg...]\n");
+ return 2;
+ }
+
+ static uint32 gBranchCount;
+ static uint32 gBranchLimit;
+
+ static JSBool
+ my_BranchCallback(JSContext *cx, JSScript *script)
+ {
+ if (++gBranchCount == gBranchLimit) {
+ if (script) {
+ if (script->filename)
+ fprintf(gErrFile, "%s:", script->filename);
+ fprintf(gErrFile, "%u: script branch callback (%u callbacks)\n",
+ script->lineno, gBranchLimit);
+ } else {
+ fprintf(gErrFile, "native branch callback (%u callbacks)\n",
+ gBranchLimit);
+ }
+ gBranchCount = 0;
+ return JS_FALSE;
+ }
+ if ((gBranchCount & 0x3fff) == 1)
+ JS_MaybeGC(cx);
+ return JS_TRUE;
+ }
+
+ extern JSClass global_class;
+
+ static int
+ ProcessArgs(JSContext *cx, JSObject *obj, char **argv, int argc)
+ {
+ int i, j, length;
+ JSObject *argsObj;
+ char *filename = NULL;
+ JSBool isInteractive = JS_TRUE;
+
+ /*
+ * Scan past all optional arguments so we can create the arguments object
+ * before processing any -f options, which must interleave properly with
+ * -v and -w options. This requires two passes, and without getopt, we'll
+ * have to keep the option logic here and in the second for loop in sync.
+ */
+ for (i = 0; i < argc; i++) {
+ if (argv[i][0] != '-' || argv[i][1] == '\0') {
+ ++i;
+ break;
+ }
+ switch (argv[i][1]) {
+ case 'b':
+ case 'c':
+ case 'f':
+ case 'e':
+ case 'v':
+ case 'S':
+ ++i;
+ break;
+ default:;
+ }
+ }
+
+ /*
+ * Create arguments early and define it to root it, so it's safe from any
+ * GC calls nested below, and so it is available to -f <file> arguments.
+ */
+ argsObj = JS_NewArrayObject(cx, 0, NULL);
+ if (!argsObj)
+ return 1;
+ if (!JS_DefineProperty(cx, obj, "arguments", OBJECT_TO_JSVAL(argsObj),
+ NULL, NULL, 0)) {
+ return 1;
+ }
+
+ length = argc - i;
+ for (j = 0; j < length; j++) {
+ JSString *str = JS_NewStringCopyZ(cx, argv[i++]);
+ if (!str)
+ return 1;
+ if (!JS_DefineElement(cx, argsObj, j, STRING_TO_JSVAL(str),
+ NULL, NULL, JSPROP_ENUMERATE)) {
+ return 1;
+ }
+ }
+
+ for (i = 0; i < argc; i++) {
+ if (argv[i][0] != '-' || argv[i][1] == '\0') {
+ filename = argv[i++];
+ isInteractive = JS_FALSE;
+ break;
+ }
+
+ switch (argv[i][1]) {
+ case 'v':
+ if (++i == argc) {
+ return usage();
+ }
+ JS_SetVersion(cx, (JSVersion) atoi(argv[i]));
+ break;
+
+ case 'w':
+ reportWarnings = JS_TRUE;
+ break;
+
+ case 'W':
+ reportWarnings = JS_FALSE;
+ break;
+
+ case 's':
+ JS_ToggleOptions(cx, JSOPTION_STRICT);
+ break;
+
+ case 'x':
+ JS_ToggleOptions(cx, JSOPTION_XML);
+ break;
+
+ case 'P':
+ if (JS_GET_CLASS(cx, JS_GetPrototype(cx, obj)) != &global_class) {
+ JSObject *gobj;
+
+ if (!JS_SealObject(cx, obj, JS_TRUE))
+ return JS_FALSE;
+ gobj = JS_NewObject(cx, &global_class, NULL, NULL);
+ if (!gobj)
+ return JS_FALSE;
+ if (!JS_SetPrototype(cx, gobj, obj))
+ return JS_FALSE;
+ JS_SetParent(cx, gobj, NULL);
+ JS_SetGlobalObject(cx, gobj);
+ obj = gobj;
+ }
+ break;
+
+ case 'b':
+ gBranchLimit = atoi(argv[++i]);
+ JS_SetBranchCallback(cx, my_BranchCallback);
+ JS_ToggleOptions(cx, JSOPTION_NATIVE_BRANCH_CALLBACK);
+ break;
+
+ case 'c':
+ /* set stack chunk size */
+ gStackChunkSize = atoi(argv[++i]);
+ break;
+
+ case 'f':
+ if (++i == argc) {
+ return usage();
+ }
+ Process(cx, obj, argv[i]);
+ /*
+ * XXX: js -f foo.js should interpret foo.js and then
+ * drop into interactive mode, but that breaks the test
+ * harness. Just execute foo.js for now.
+ */
+ isInteractive = JS_FALSE;
+ break;
+
+ case 'e':
+ {
+ jsval rval;
+
+ if (++i == argc) {
+ return usage();
+ }
+
+ /* Pass a filename of -e to imitate PERL */
+ JS_EvaluateScript(cx, obj, argv[i], strlen(argv[i]),
+ "-e", 1, &rval);
+
+ isInteractive = JS_FALSE;
+ break;
+
+ }
+ case 'C':
+ compileOnly = JS_TRUE;
+ isInteractive = JS_FALSE;
+ break;
+
+ case 'S':
+ if (++i == argc) {
+ return usage();
+ }
+ /* Set maximum stack size. */
+ gMaxStackSize = atoi(argv[i]);
+ break;
+
+ default:
+ return usage();
+ }
+ }
+
+ if (filename || isInteractive)
+ Process(cx, obj, filename);
+ return gExitCode;
+ }
+
+
+ static JSBool
+ Version(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ if (argc > 0 && JSVAL_IS_INT(argv[0]))
+ *rval = INT_TO_JSVAL(JS_SetVersion(cx, (JSVersion) JSVAL_TO_INT(argv[0])));
+ else
+ *rval = INT_TO_JSVAL(JS_GetVersion(cx));
+ return JS_TRUE;
+ }
+
+ static struct {
+ const char *name;
+ uint32 flag;
+ } js_options[] = {
+ {"strict", JSOPTION_STRICT},
+ {"werror", JSOPTION_WERROR},
+ {"atline", JSOPTION_ATLINE},
+ {"xml", JSOPTION_XML},
+ {0, 0}
+ };
+
+ static JSBool
+ Options(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ uint32 optset, flag;
+ uintN i, j, found;
+ JSString *str;
+ const char *opt;
+ char *names;
+
+ optset = 0;
+ for (i = 0; i < argc; i++) {
+ str = JS_ValueToString(cx, argv[i]);
+ if (!str)
+ return JS_FALSE;
+ opt = JS_GetStringBytes(str);
+ for (j = 0; js_options[j].name; j++) {
+ if (strcmp(js_options[j].name, opt) == 0) {
+ optset |= js_options[j].flag;
+ break;
+ }
+ }
+ }
+ optset = JS_ToggleOptions(cx, optset);
+
+ names = NULL;
+ found = 0;
+ while (optset != 0) {
+ flag = optset;
+ optset &= optset - 1;
+ flag &= ~optset;
+ for (j = 0; js_options[j].name; j++) {
+ if (js_options[j].flag == flag) {
+ names = JS_sprintf_append(names, "%s%s",
+ names ? "," : "", js_options[j].name);
+ found++;
+ break;
+ }
+ }
+ }
+ if (!found)
+ names = strdup("");
+ if (!names) {
+ JS_ReportOutOfMemory(cx);
+ return JS_FALSE;
+ }
+
+ str = JS_NewString(cx, names, strlen(names));
+ if (!str) {
+ free(names);
+ return JS_FALSE;
+ }
+ *rval = STRING_TO_JSVAL(str);
+ return JS_TRUE;
+ }
+
+ static void
+ my_LoadErrorReporter(JSContext *cx, const char *message, JSErrorReport *report);
+
+ static void
+ my_ErrorReporter(JSContext *cx, const char *message, JSErrorReport *report);
+
+ static JSBool
+ Load(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ uintN i;
+ JSString *str;
+ const char *filename;
+ JSScript *script;
+ JSBool ok;
+ jsval result;
+ JSErrorReporter older;
+ uint32 oldopts;
+
+ for (i = 0; i < argc; i++) {
+ str = JS_ValueToString(cx, argv[i]);
+ if (!str)
+ return JS_FALSE;
+ argv[i] = STRING_TO_JSVAL(str);
+ filename = JS_GetStringBytes(str);
+ errno = 0;
+ older = JS_SetErrorReporter(cx, my_LoadErrorReporter);
+ oldopts = JS_GetOptions(cx);
+ JS_SetOptions(cx, oldopts | JSOPTION_COMPILE_N_GO);
+ script = JS_CompileFile(cx, obj, filename);
+ if (!script) {
+ ok = JS_FALSE;
+ } else {
+ ok = !compileOnly
+ ? JS_ExecuteScript(cx, obj, script, &result)
+ : JS_TRUE;
+ JS_DestroyScript(cx, script);
+ }
+ JS_SetOptions(cx, oldopts);
+ JS_SetErrorReporter(cx, older);
+ if (!ok)
+ return JS_FALSE;
+ }
+
+ return JS_TRUE;
+ }
+
+ /*
+ * function readline()
+ * Provides a hook for scripts to read a line from stdin.
+ */
+ static JSBool
+ ReadLine(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ #define BUFSIZE 256
+ FILE *from;
+ char *buf, *tmp;
+ size_t bufsize, buflength, gotlength;
+ JSString *str;
+
+ from = stdin;
+ buflength = 0;
+ bufsize = BUFSIZE;
+ buf = JS_malloc(cx, bufsize);
+ if (!buf)
+ return JS_FALSE;
+
+ while ((gotlength =
+ js_fgets(buf + buflength, bufsize - buflength, from)) > 0) {
+ buflength += gotlength;
+
+ /* Are we done? */
+ if (buf[buflength - 1] == '\n') {
+ buf[buflength - 1] = '\0';
+ break;
+ }
+
+ /* Else, grow our buffer for another pass. */
+ tmp = JS_realloc(cx, buf, bufsize * 2);
+ if (!tmp) {
+ JS_free(cx, buf);
+ return JS_FALSE;
+ }
+
+ bufsize *= 2;
+ buf = tmp;
+ }
+
+ /* Treat the empty string specially. */
+ if (buflength == 0) {
+ *rval = JS_GetEmptyStringValue(cx);
+ JS_free(cx, buf);
+ return JS_TRUE;
+ }
+
+ /* Shrink the buffer to the real size. */
+ tmp = JS_realloc(cx, buf, buflength);
+ if (!tmp) {
+ JS_free(cx, buf);
+ return JS_FALSE;
+ }
+
+ buf = tmp;
+
+ /*
+ * Turn buf into a JSString. Note that buflength includes the trailing null
+ * character.
+ */
+ str = JS_NewString(cx, buf, buflength - 1);
+ if (!str) {
+ JS_free(cx, buf);
+ return JS_FALSE;
+ }
+
+ *rval = STRING_TO_JSVAL(str);
+ return JS_TRUE;
+ }
+
+ static JSBool
+ Print(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ uintN i, n;
+ JSString *str;
+
+ for (i = n = 0; i < argc; i++) {
+ str = JS_ValueToString(cx, argv[i]);
+ if (!str)
+ return JS_FALSE;
+ fprintf(gOutFile, "%s%s", i ? " " : "", JS_GetStringBytes(str));
+ }
+ n++;
+ if (n)
+ fputc('\n', gOutFile);
+ return JS_TRUE;
+ }
+
+ static JSBool
+ Help(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval);
+
+ static JSBool
+ Quit(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ #ifdef LIVECONNECT
+ JSJ_SimpleShutdown();
+ #endif
+
+ JS_ConvertArguments(cx, argc, argv,"/ i", &gExitCode);
+
+ gQuitting = JS_TRUE;
+ return JS_FALSE;
+ }
+
+ #ifdef GC_MARK_DEBUG
+ extern JS_FRIEND_DATA(FILE *) js_DumpGCHeap;
+ #endif
+
+ static JSBool
+ GC(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSRuntime *rt;
+ uint32 preBytes;
+
+ rt = cx->runtime;
+ preBytes = rt->gcBytes;
+ #ifdef GC_MARK_DEBUG
+ if (argc && JSVAL_IS_STRING(argv[0])) {
+ char *name = JS_GetStringBytes(JSVAL_TO_STRING(argv[0]));
+ FILE *file = fopen(name, "w");
+ if (!file) {
+ fprintf(gErrFile, "gc: can't open %s: %s\n", strerror(errno));
+ return JS_FALSE;
+ }
+ js_DumpGCHeap = file;
+ } else {
+ js_DumpGCHeap = stdout;
+ }
+ #endif
+ JS_GC(cx);
+ #ifdef GC_MARK_DEBUG
+ if (js_DumpGCHeap != stdout)
+ fclose(js_DumpGCHeap);
+ js_DumpGCHeap = NULL;
+ #endif
+ fprintf(gOutFile, "before %lu, after %lu, break %08lx\n",
+ (unsigned long)preBytes, (unsigned long)rt->gcBytes,
+ #ifdef XP_UNIX
+ (unsigned long)sbrk(0)
+ #else
+ 0
+ #endif
+ );
+ #ifdef JS_GCMETER
+ js_DumpGCStats(rt, stdout);
+ #endif
+ return JS_TRUE;
+ }
+
+ static JSScript *
+ ValueToScript(JSContext *cx, jsval v)
+ {
+ JSScript *script;
+ JSFunction *fun;
+
+ if (!JSVAL_IS_PRIMITIVE(v) &&
+ JS_GET_CLASS(cx, JSVAL_TO_OBJECT(v)) == &js_ScriptClass) {
+ script = (JSScript *) JS_GetPrivate(cx, JSVAL_TO_OBJECT(v));
+ } else {
+ fun = JS_ValueToFunction(cx, v);
+ if (!fun)
+ return NULL;
+ script = FUN_SCRIPT(fun);
+ }
+ return script;
+ }
+
+ static JSBool
+ GetTrapArgs(JSContext *cx, uintN argc, jsval *argv, JSScript **scriptp,
+ int32 *ip)
+ {
+ jsval v;
+ uintN intarg;
+ JSScript *script;
+
+ *scriptp = cx->fp->down->script;
+ *ip = 0;
+ if (argc != 0) {
+ v = argv[0];
+ intarg = 0;
+ if (!JSVAL_IS_PRIMITIVE(v) &&
+ (JS_GET_CLASS(cx, JSVAL_TO_OBJECT(v)) == &js_FunctionClass ||
+ JS_GET_CLASS(cx, JSVAL_TO_OBJECT(v)) == &js_ScriptClass)) {
+ script = ValueToScript(cx, v);
+ if (!script)
+ return JS_FALSE;
+ *scriptp = script;
+ intarg++;
+ }
+ if (argc > intarg) {
+ if (!JS_ValueToInt32(cx, argv[intarg], ip))
+ return JS_FALSE;
+ }
+ }
+ return JS_TRUE;
+ }
+
+ static JSTrapStatus
+ TrapHandler(JSContext *cx, JSScript *script, jsbytecode *pc, jsval *rval,
+ void *closure)
+ {
+ JSString *str;
+ JSStackFrame *caller;
+
+ str = (JSString *) closure;
+ caller = JS_GetScriptedCaller(cx, NULL);
+ if (!JS_EvaluateScript(cx, caller->scopeChain,
+ JS_GetStringBytes(str), JS_GetStringLength(str),
+ caller->script->filename, caller->script->lineno,
+ rval)) {
+ return JSTRAP_ERROR;
+ }
+ if (*rval != JSVAL_VOID)
+ return JSTRAP_RETURN;
+ return JSTRAP_CONTINUE;
+ }
+
+ static JSBool
+ Trap(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSString *str;
+ JSScript *script;
+ int32 i;
+
+ if (argc == 0) {
+ JS_ReportErrorNumber(cx, my_GetErrorMessage, NULL, JSSMSG_TRAP_USAGE);
+ return JS_FALSE;
+ }
+ argc--;
+ str = JS_ValueToString(cx, argv[argc]);
+ if (!str)
+ return JS_FALSE;
+ argv[argc] = STRING_TO_JSVAL(str);
+ if (!GetTrapArgs(cx, argc, argv, &script, &i))
+ return JS_FALSE;
+ return JS_SetTrap(cx, script, script->code + i, TrapHandler, str);
+ }
+
+ static JSBool
+ Untrap(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSScript *script;
+ int32 i;
+
+ if (!GetTrapArgs(cx, argc, argv, &script, &i))
+ return JS_FALSE;
+ JS_ClearTrap(cx, script, script->code + i, NULL, NULL);
+ return JS_TRUE;
+ }
+
+ static JSBool
+ LineToPC(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSScript *script;
+ int32 i;
+ uintN lineno;
+ jsbytecode *pc;
+
+ if (argc == 0) {
+ JS_ReportErrorNumber(cx, my_GetErrorMessage, NULL, JSSMSG_LINE2PC_USAGE);
+ return JS_FALSE;
+ }
+ script = cx->fp->down->script;
+ if (!GetTrapArgs(cx, argc, argv, &script, &i))
+ return JS_FALSE;
+ lineno = (i == 0) ? script->lineno : (uintN)i;
+ pc = JS_LineNumberToPC(cx, script, lineno);
+ if (!pc)
+ return JS_FALSE;
+ *rval = INT_TO_JSVAL(PTRDIFF(pc, script->code, jsbytecode));
+ return JS_TRUE;
+ }
+
+ static JSBool
+ PCToLine(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSScript *script;
+ int32 i;
+ uintN lineno;
+
+ if (!GetTrapArgs(cx, argc, argv, &script, &i))
+ return JS_FALSE;
+ lineno = JS_PCToLineNumber(cx, script, script->code + i);
+ if (!lineno)
+ return JS_FALSE;
+ *rval = INT_TO_JSVAL(lineno);
+ return JS_TRUE;
+ }
+
+ #ifdef DEBUG
+
+ static void
+ SrcNotes(JSContext *cx, JSScript *script)
+ {
+ uintN offset, delta, caseOff;
+ jssrcnote *notes, *sn;
+ JSSrcNoteType type;
+ jsatomid atomIndex;
+ JSAtom *atom;
+
+ fprintf(gOutFile, "\nSource notes:\n");
+ offset = 0;
+ notes = SCRIPT_NOTES(script);
+ for (sn = notes; !SN_IS_TERMINATOR(sn); sn = SN_NEXT(sn)) {
+ delta = SN_DELTA(sn);
+ offset += delta;
+ fprintf(gOutFile, "%3u: %5u [%4u] %-8s",
+ PTRDIFF(sn, notes, jssrcnote), offset, delta,
+ js_SrcNoteSpec[SN_TYPE(sn)].name);
+ type = (JSSrcNoteType) SN_TYPE(sn);
+ switch (type) {
+ case SRC_SETLINE:
+ fprintf(gOutFile, " lineno %u", (uintN) js_GetSrcNoteOffset(sn, 0));
+ break;
+ case SRC_FOR:
+ fprintf(gOutFile, " cond %u update %u tail %u",
+ (uintN) js_GetSrcNoteOffset(sn, 0),
+ (uintN) js_GetSrcNoteOffset(sn, 1),
+ (uintN) js_GetSrcNoteOffset(sn, 2));
+ break;
+ case SRC_COND:
+ case SRC_IF_ELSE:
+ case SRC_WHILE:
+ case SRC_PCBASE:
+ case SRC_PCDELTA:
+ fprintf(gOutFile, " offset %u", (uintN) js_GetSrcNoteOffset(sn, 0));
+ break;
+ case SRC_LABEL:
+ case SRC_LABELBRACE:
+ case SRC_BREAK2LABEL:
+ case SRC_CONT2LABEL:
+ case SRC_FUNCDEF: {
+ const char *bytes;
+ JSFunction *fun;
+ JSString *str;
+
+ atomIndex = (jsatomid) js_GetSrcNoteOffset(sn, 0);
+ atom = js_GetAtom(cx, &script->atomMap, atomIndex);
+ if (type != SRC_FUNCDEF) {
+ bytes = js_AtomToPrintableString(cx, atom);
+ } else {
+ fun = (JSFunction *)
+ JS_GetPrivate(cx, ATOM_TO_OBJECT(atom));
+ str = JS_DecompileFunction(cx, fun, JS_DONT_PRETTY_PRINT);
+ bytes = str ? JS_GetStringBytes(str) : "N/A";
+ }
+ fprintf(gOutFile, " atom %u (%s)", (uintN)atomIndex, bytes);
+ break;
+ }
+ case SRC_SWITCH:
+ fprintf(gOutFile, " length %u", (uintN) js_GetSrcNoteOffset(sn, 0));
+ caseOff = (uintN) js_GetSrcNoteOffset(sn, 1);
+ if (caseOff)
+ fprintf(gOutFile, " first case offset %u", caseOff);
+ break;
+ case SRC_CATCH:
+ delta = (uintN) js_GetSrcNoteOffset(sn, 0);
+ if (delta)
+ fprintf(gOutFile, " guard size %u", delta);
+ break;
+ default:;
+ }
+ fputc('\n', gOutFile);
+ }
+ }
+
+ static JSBool
+ Notes(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ uintN i;
+ JSScript *script;
+
+ for (i = 0; i < argc; i++) {
+ script = ValueToScript(cx, argv[i]);
+ if (!script)
+ continue;
+
+ SrcNotes(cx, script);
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ TryNotes(JSContext *cx, JSScript *script)
+ {
+ JSTryNote *tn = script->trynotes;
+
+ if (!tn)
+ return JS_TRUE;
+ fprintf(gOutFile, "\nException table:\nstart\tend\tcatch\n");
+ while (tn->start && tn->catchStart) {
+ fprintf(gOutFile, " %d\t%d\t%d\n",
+ tn->start, tn->start + tn->length, tn->catchStart);
+ tn++;
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ Disassemble(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSBool lines;
+ uintN i;
+ JSScript *script;
+
+ if (argc > 0 &&
+ JSVAL_IS_STRING(argv[0]) &&
+ !strcmp(JS_GetStringBytes(JSVAL_TO_STRING(argv[0])), "-l")) {
+ lines = JS_TRUE;
+ argv++, argc--;
+ } else {
+ lines = JS_FALSE;
+ }
+ for (i = 0; i < argc; i++) {
+ script = ValueToScript(cx, argv[i]);
+ if (!script)
+ continue;
+
+ if (JSVAL_IS_FUNCTION(cx, argv[i])) {
+ JSFunction *fun = JS_ValueToFunction(cx, argv[i]);
+ if (fun && (fun->flags & JSFUN_FLAGS_MASK)) {
+ uint8 flags = fun->flags;
+ fputs("flags:", stdout);
+
+ #define SHOW_FLAG(flag) if (flags & JSFUN_##flag) fputs(" " #flag, stdout);
+
+ SHOW_FLAG(LAMBDA);
+ SHOW_FLAG(SETTER);
+ SHOW_FLAG(GETTER);
+ SHOW_FLAG(BOUND_METHOD);
+ SHOW_FLAG(HEAVYWEIGHT);
+
+ #undef SHOW_FLAG
+ putchar('\n');
+ }
+ }
+
+ if (!js_Disassemble(cx, script, lines, stdout))
+ return JS_FALSE;
+ SrcNotes(cx, script);
+ TryNotes(cx, script);
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ DisassWithSrc(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
+ jsval *rval)
+ {
+ #define LINE_BUF_LEN 512
+ uintN i, len, line1, line2, bupline;
+ JSScript *script;
+ FILE *file;
+ char linebuf[LINE_BUF_LEN];
+ jsbytecode *pc, *end;
+ static char sep[] = ";-------------------------";
+
+ for (i = 0; i < argc; i++) {
+ script = ValueToScript(cx, argv[i]);
+ if (!script)
+ continue;
+
+ if (!script || !script->filename) {
+ JS_ReportErrorNumber(cx, my_GetErrorMessage, NULL,
+ JSSMSG_FILE_SCRIPTS_ONLY);
+ return JS_FALSE;
+ }
+
+ file = fopen(script->filename, "r");
+ if (!file) {
+ JS_ReportErrorNumber(cx, my_GetErrorMessage, NULL,
+ JSSMSG_CANT_OPEN,
+ script->filename, strerror(errno));
+ return JS_FALSE;
+ }
+
+ pc = script->code;
+ end = pc + script->length;
+
+ /* burn the leading lines */
+ line2 = JS_PCToLineNumber(cx, script, pc);
+ for (line1 = 0; line1 < line2 - 1; line1++)
+ fgets(linebuf, LINE_BUF_LEN, file);
+
+ bupline = 0;
+ while (pc < end) {
+ line2 = JS_PCToLineNumber(cx, script, pc);
+
+ if (line2 < line1) {
+ if (bupline != line2) {
+ bupline = line2;
+ fprintf(gOutFile, "%s %3u: BACKUP\n", sep, line2);
+ }
+ } else {
+ if (bupline && line1 == line2)
+ fprintf(gOutFile, "%s %3u: RESTORE\n", sep, line2);
+ bupline = 0;
+ while (line1 < line2) {
+ if (!fgets(linebuf, LINE_BUF_LEN, file)) {
+ JS_ReportErrorNumber(cx, my_GetErrorMessage, NULL,
+ JSSMSG_UNEXPECTED_EOF,
+ script->filename);
+ goto bail;
+ }
+ line1++;
+ fprintf(gOutFile, "%s %3u: %s", sep, line1, linebuf);
+ }
+ }
+
+ len = js_Disassemble1(cx, script, pc,
+ PTRDIFF(pc, script->code, jsbytecode),
+ JS_TRUE, stdout);
+ if (!len)
+ return JS_FALSE;
+ pc += len;
+ }
+
+ bail:
+ fclose(file);
+ }
+ return JS_TRUE;
+ #undef LINE_BUF_LEN
+ }
+
+ static JSBool
+ Tracing(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSBool bval;
+ JSString *str;
+
+ if (argc == 0) {
+ *rval = BOOLEAN_TO_JSVAL(cx->tracefp != 0);
+ return JS_TRUE;
+ }
+
+ switch (JS_TypeOfValue(cx, argv[0])) {
+ case JSTYPE_NUMBER:
+ bval = JSVAL_IS_INT(argv[0])
+ ? JSVAL_TO_INT(argv[0])
+ : (jsint) *JSVAL_TO_DOUBLE(argv[0]);
+ break;
+ case JSTYPE_BOOLEAN:
+ bval = JSVAL_TO_BOOLEAN(argv[0]);
+ break;
+ default:
+ str = JS_ValueToString(cx, argv[0]);
+ if (!str)
+ return JS_FALSE;
+ fprintf(gErrFile, "tracing: illegal argument %s\n",
+ JS_GetStringBytes(str));
+ return JS_TRUE;
+ }
+ cx->tracefp = bval ? stderr : NULL;
+ return JS_TRUE;
+ }
+
+ typedef struct DumpAtomArgs {
+ JSContext *cx;
+ FILE *fp;
+ } DumpAtomArgs;
+
+ static int
+ DumpAtom(JSHashEntry *he, int i, void *arg)
+ {
+ DumpAtomArgs *args = (DumpAtomArgs *)arg;
+ FILE *fp = args->fp;
+ JSAtom *atom = (JSAtom *)he;
+
+ fprintf(fp, "%3d %08x %5lu ",
+ i, (uintN)he->keyHash, (unsigned long)atom->number);
+ if (ATOM_IS_STRING(atom))
+ fprintf(fp, "\"%s\"\n", js_AtomToPrintableString(args->cx, atom));
+ else if (ATOM_IS_INT(atom))
+ fprintf(fp, "%ld\n", (long)ATOM_TO_INT(atom));
+ else
+ fprintf(fp, "%.16g\n", *ATOM_TO_DOUBLE(atom));
+ return HT_ENUMERATE_NEXT;
+ }
+
+ static void
+ DumpScope(JSContext *cx, JSObject *obj, FILE *fp)
+ {
+ uintN i;
+ JSScope *scope;
+ JSScopeProperty *sprop;
+
+ i = 0;
+ scope = OBJ_SCOPE(obj);
+ for (sprop = SCOPE_LAST_PROP(scope); sprop; sprop = sprop->parent) {
+ if (SCOPE_HAD_MIDDLE_DELETE(scope) && !SCOPE_HAS_PROPERTY(scope, sprop))
+ continue;
+ fprintf(fp, "%3u %p", i, sprop);
+ if (JSID_IS_INT(sprop->id)) {
+ fprintf(fp, " [%ld]", (long)JSVAL_TO_INT(sprop->id));
+ } else if (JSID_IS_ATOM(sprop->id)) {
+ JSAtom *atom = JSID_TO_ATOM(sprop->id);
+ fprintf(fp, " \"%s\"", js_AtomToPrintableString(cx, atom));
+ } else {
+ jsval v = OBJECT_TO_JSVAL(JSID_TO_OBJECT(sprop->id));
+ fprintf(fp, " \"%s\"", js_ValueToPrintableString(cx, v));
+ }
+
+ #define DUMP_ATTR(name) if (sprop->attrs & JSPROP_##name) fputs(" " #name, fp)
+ DUMP_ATTR(ENUMERATE);
+ DUMP_ATTR(READONLY);
+ DUMP_ATTR(PERMANENT);
+ DUMP_ATTR(EXPORTED);
+ DUMP_ATTR(GETTER);
+ DUMP_ATTR(SETTER);
+ #undef DUMP_ATTR
+
+ fprintf(fp, " slot %lu flags %x shortid %d\n",
+ sprop->slot, sprop->flags, sprop->shortid);
+ }
+ }
+
+ static JSBool
+ DumpStats(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ uintN i;
+ JSString *str;
+ const char *bytes;
+ JSAtom *atom;
+ JSObject *obj2;
+ JSProperty *prop;
+ jsval value;
+
+ for (i = 0; i < argc; i++) {
+ str = JS_ValueToString(cx, argv[i]);
+ if (!str)
+ return JS_FALSE;
+ bytes = JS_GetStringBytes(str);
+ if (strcmp(bytes, "arena") == 0) {
+ #ifdef JS_ARENAMETER
+ JS_DumpArenaStats(stdout);
+ #endif
+ } else if (strcmp(bytes, "atom") == 0) {
+ DumpAtomArgs args;
+
+ fprintf(gOutFile, "\natom table contents:\n");
+ args.cx = cx;
+ args.fp = stdout;
+ JS_HashTableEnumerateEntries(cx->runtime->atomState.table,
+ DumpAtom,
+ &args);
+ #ifdef HASHMETER
+ JS_HashTableDumpMeter(cx->runtime->atomState.table,
+ DumpAtom,
+ stdout);
+ #endif
+ } else if (strcmp(bytes, "global") == 0) {
+ DumpScope(cx, cx->globalObject, stdout);
+ } else {
+ atom = js_Atomize(cx, bytes, JS_GetStringLength(str), 0);
+ if (!atom)
+ return JS_FALSE;
+ if (!js_FindProperty(cx, ATOM_TO_JSID(atom), &obj, &obj2, &prop))
+ return JS_FALSE;
+ if (prop) {
+ OBJ_DROP_PROPERTY(cx, obj2, prop);
+ if (!OBJ_GET_PROPERTY(cx, obj, ATOM_TO_JSID(atom), &value))
+ return JS_FALSE;
+ }
+ if (!prop || !JSVAL_IS_OBJECT(value)) {
+ fprintf(gErrFile, "js: invalid stats argument %s\n",
+ bytes);
+ continue;
+ }
+ obj = JSVAL_TO_OBJECT(value);
+ if (obj)
+ DumpScope(cx, obj, stdout);
+ }
+ }
+ return JS_TRUE;
+ }
+
+ #endif /* DEBUG */
+
+ #ifdef TEST_EXPORT
+ static JSBool
+ DoExport(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSAtom *atom;
+ JSObject *obj2;
+ JSProperty *prop;
+ JSBool ok;
+ uintN attrs;
+
+ if (argc != 2) {
+ JS_ReportErrorNumber(cx, my_GetErrorMessage, NULL, JSSMSG_DOEXP_USAGE);
+ return JS_FALSE;
+ }
+ if (!JS_ValueToObject(cx, argv[0], &obj))
+ return JS_FALSE;
+ argv[0] = OBJECT_TO_JSVAL(obj);
+ atom = js_ValueToStringAtom(cx, argv[1]);
+ if (!atom)
+ return JS_FALSE;
+ if (!OBJ_LOOKUP_PROPERTY(cx, obj, ATOM_TO_JSID(atom), &obj2, &prop))
+ return JS_FALSE;
+ if (!prop) {
+ ok = OBJ_DEFINE_PROPERTY(cx, obj, id, JSVAL_VOID, NULL, NULL,
+ JSPROP_EXPORTED, NULL);
+ } else {
+ ok = OBJ_GET_ATTRIBUTES(cx, obj, ATOM_TO_JSID(atom), prop, &attrs);
+ if (ok) {
+ attrs |= JSPROP_EXPORTED;
+ ok = OBJ_SET_ATTRIBUTES(cx, obj, ATOM_TO_JSID(atom), prop, &attrs);
+ }
+ OBJ_DROP_PROPERTY(cx, obj2, prop);
+ }
+ return ok;
+ }
+ #endif
+
+ #ifdef TEST_CVTARGS
+ #include <ctype.h>
+
+ static const char *
+ EscapeWideString(jschar *w)
+ {
+ static char enuf[80];
+ static char hex[] = "0123456789abcdef";
+ jschar u;
+ unsigned char b, c;
+ int i, j;
+
+ if (!w)
+ return "";
+ for (i = j = 0; i < sizeof enuf - 1; i++, j++) {
+ u = w[j];
+ if (u == 0)
+ break;
+ b = (unsigned char)(u >> 8);
+ c = (unsigned char)(u);
+ if (b) {
+ if (i >= sizeof enuf - 6)
+ break;
+ enuf[i++] = '\\';
+ enuf[i++] = 'u';
+ enuf[i++] = hex[b >> 4];
+ enuf[i++] = hex[b & 15];
+ enuf[i++] = hex[c >> 4];
+ enuf[i] = hex[c & 15];
+ } else if (!isprint(c)) {
+ if (i >= sizeof enuf - 4)
+ break;
+ enuf[i++] = '\\';
+ enuf[i++] = 'x';
+ enuf[i++] = hex[c >> 4];
+ enuf[i] = hex[c & 15];
+ } else {
+ enuf[i] = (char)c;
+ }
+ }
+ enuf[i] = 0;
+ return enuf;
+ }
+
+ #include <stdarg.h>
+
+ static JSBool
+ ZZ_formatter(JSContext *cx, const char *format, JSBool fromJS, jsval **vpp,
+ va_list *app)
+ {
+ jsval *vp;
+ va_list ap;
+ jsdouble re, im;
+
+ printf("entering ZZ_formatter");
+ vp = *vpp;
+ ap = *app;
+ if (fromJS) {
+ if (!JS_ValueToNumber(cx, vp[0], &re))
+ return JS_FALSE;
+ if (!JS_ValueToNumber(cx, vp[1], &im))
+ return JS_FALSE;
+ *va_arg(ap, jsdouble *) = re;
+ *va_arg(ap, jsdouble *) = im;
+ } else {
+ re = va_arg(ap, jsdouble);
+ im = va_arg(ap, jsdouble);
+ if (!JS_NewNumberValue(cx, re, &vp[0]))
+ return JS_FALSE;
+ if (!JS_NewNumberValue(cx, im, &vp[1]))
+ return JS_FALSE;
+ }
+ *vpp = vp + 2;
+ *app = ap;
+ printf("leaving ZZ_formatter");
+ return JS_TRUE;
+ }
+
+ static JSBool
+ ConvertArgs(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSBool b = JS_FALSE;
+ jschar c = 0;
+ int32 i = 0, j = 0;
+ uint32 u = 0;
+ jsdouble d = 0, I = 0, re = 0, im = 0;
+ char *s = NULL;
+ JSString *str = NULL;
+ jschar *w = NULL;
+ JSObject *obj2 = NULL;
+ JSFunction *fun = NULL;
+ jsval v = JSVAL_VOID;
+ JSBool ok;
+
+ if (!JS_AddArgumentFormatter(cx, "ZZ", ZZ_formatter))
+ return JS_FALSE;;
+ ok = JS_ConvertArguments(cx, argc, argv, "b/ciujdIsSWofvZZ*",
+ &b, &c, &i, &u, &j, &d, &I, &s, &str, &w, &obj2,
+ &fun, &v, &re, &im);
+ JS_RemoveArgumentFormatter(cx, "ZZ");
+ if (!ok)
+ return JS_FALSE;
+ fprintf(gOutFile,
+ "b %u, c %x (%c), i %ld, u %lu, j %ld\n",
+ b, c, (char)c, i, u, j);
+ fprintf(gOutFile,
+ "d %g, I %g, s %s, S %s, W %s, obj %s, fun %s\n"
+ "v %s, re %g, im %g\n",
+ d, I, s, str ? JS_GetStringBytes(str) : "", EscapeWideString(w),
+ JS_GetStringBytes(JS_ValueToString(cx, OBJECT_TO_JSVAL(obj2))),
+ fun ? JS_GetStringBytes(JS_DecompileFunction(cx, fun, 4)) : "",
+ JS_GetStringBytes(JS_ValueToString(cx, v)), re, im);
+ return JS_TRUE;
+ }
+ #endif
+
+ static JSBool
+ BuildDate(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ fprintf(gOutFile, "built on %s at %s\n", __DATE__, __TIME__);
+ return JS_TRUE;
+ }
+
+ static JSBool
+ Clear(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ if (argc != 0 && !JS_ValueToObject(cx, argv[0], &obj))
+ return JS_FALSE;
+ JS_ClearScope(cx, obj);
+ return JS_TRUE;
+ }
+
+ static JSBool
+ Intern(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSString *str;
+
+ str = JS_ValueToString(cx, argv[0]);
+ if (!str)
+ return JS_FALSE;
+ if (!JS_InternUCStringN(cx, JS_GetStringChars(str),
+ JS_GetStringLength(str))) {
+ return JS_FALSE;
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ Clone(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSFunction *fun;
+ JSObject *funobj, *parent, *clone;
+
+ fun = JS_ValueToFunction(cx, argv[0]);
+ if (!fun)
+ return JS_FALSE;
+ funobj = JS_GetFunctionObject(fun);
+ if (argc > 1) {
+ if (!JS_ValueToObject(cx, argv[1], &parent))
+ return JS_FALSE;
+ } else {
+ parent = JS_GetParent(cx, funobj);
+ }
+ clone = JS_CloneFunctionObject(cx, funobj, parent);
+ if (!clone)
+ return JS_FALSE;
+ *rval = OBJECT_TO_JSVAL(clone);
+ return JS_TRUE;
+ }
+
+ static JSBool
+ Seal(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSObject *target;
+ JSBool deep = JS_FALSE;
+
+ if (!JS_ConvertArguments(cx, argc, argv, "o/b", &target, &deep))
+ return JS_FALSE;
+ if (!target)
+ return JS_TRUE;
+ return JS_SealObject(cx, target, deep);
+ }
+
+ static JSBool
+ GetPDA(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSObject *vobj, *aobj, *pdobj;
+ JSBool ok;
+ JSPropertyDescArray pda;
+ JSPropertyDesc *pd;
+ uint32 i;
+ jsval v;
+
+ if (!JS_ValueToObject(cx, argv[0], &vobj))
+ return JS_FALSE;
+ if (!vobj)
+ return JS_TRUE;
+
+ aobj = JS_NewArrayObject(cx, 0, NULL);
+ if (!aobj)
+ return JS_FALSE;
+ *rval = OBJECT_TO_JSVAL(aobj);
+
+ ok = JS_GetPropertyDescArray(cx, vobj, &pda);
+ if (!ok)
+ return JS_FALSE;
+ pd = pda.array;
+ for (i = 0; i < pda.length; i++) {
+ pdobj = JS_NewObject(cx, NULL, NULL, NULL);
+ if (!pdobj) {
+ ok = JS_FALSE;
+ break;
+ }
+
+ ok = JS_SetProperty(cx, pdobj, "id", &pd->id) &&
+ JS_SetProperty(cx, pdobj, "value", &pd->value) &&
+ (v = INT_TO_JSVAL(pd->flags),
+ JS_SetProperty(cx, pdobj, "flags", &v)) &&
+ (v = INT_TO_JSVAL(pd->slot),
+ JS_SetProperty(cx, pdobj, "slot", &v)) &&
+ JS_SetProperty(cx, pdobj, "alias", &pd->alias);
+ if (!ok)
+ break;
+
+ v = OBJECT_TO_JSVAL(pdobj);
+ ok = JS_SetElement(cx, aobj, i, &v);
+ if (!ok)
+ break;
+ }
+ JS_PutPropertyDescArray(cx, &pda);
+ return ok;
+ }
+
+ static JSBool
+ GetSLX(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSScript *script;
+
+ script = ValueToScript(cx, argv[0]);
+ if (!script)
+ return JS_FALSE;
+ *rval = INT_TO_JSVAL(js_GetScriptLineExtent(script));
+ return JS_TRUE;
+ }
+
+ static JSBool
+ ToInt32(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ int32 i;
+
+ if (!JS_ValueToInt32(cx, argv[0], &i))
+ return JS_FALSE;
+ return JS_NewNumberValue(cx, i, rval);
+ }
+
+ static JSFunctionSpec shell_functions[] = {
+ {"version", Version, 0},
+ {"options", Options, 0},
+ {"load", Load, 1},
+ {"readline", ReadLine, 0},
+ {"print", Print, 0},
+ {"help", Help, 0},
+ {"quit", Quit, 0},
+ {"gc", GC, 0},
+ {"trap", Trap, 3},
+ {"untrap", Untrap, 2},
+ {"line2pc", LineToPC, 0},
+ {"pc2line", PCToLine, 0},
+ #ifdef DEBUG
+ {"dis", Disassemble, 1},
+ {"dissrc", DisassWithSrc, 1},
+ {"notes", Notes, 1},
+ {"tracing", Tracing, 0},
+ {"stats", DumpStats, 1},
+ #endif
+ #ifdef TEST_EXPORT
+ {"xport", DoExport, 2},
+ #endif
+ #ifdef TEST_CVTARGS
+ {"cvtargs", ConvertArgs, 0, 0, 12},
+ #endif
+ {"build", BuildDate, 0},
+ {"clear", Clear, 0},
+ {"intern", Intern, 1},
+ {"clone", Clone, 1},
+ {"seal", Seal, 1, 0, 1},
+ {"getpda", GetPDA, 1},
+ {"getslx", GetSLX, 1},
+ {"toint32", ToInt32, 1},
+ {0}
+ };
+
+ /* NOTE: These must be kept in sync with the above. */
+
+ static char *shell_help_messages[] = {
+ "version([number]) Get or set JavaScript version number",
+ "options([option ...]) Get or toggle JavaScript options",
+ "load(['foo.js' ...]) Load files named by string arguments",
+ "readline() Read a single line from stdin",
+ "print([exp ...]) Evaluate and print expressions",
+ "help([name ...]) Display usage and help messages",
+ "quit() Quit the shell",
+ "gc() Run the garbage collector",
+ "trap([fun, [pc,]] exp) Trap bytecode execution",
+ "untrap(fun[, pc]) Remove a trap",
+ "line2pc([fun,] line) Map line number to PC",
+ "pc2line(fun[, pc]) Map PC to line number",
+ #ifdef DEBUG
+ "dis([fun]) Disassemble functions into bytecodes",
+ "dissrc([fun]) Disassemble functions with source lines",
+ "notes([fun]) Show source notes for functions",
+ "tracing([toggle]) Turn tracing on or off",
+ "stats([string ...]) Dump 'arena', 'atom', 'global' stats",
+ #endif
+ #ifdef TEST_EXPORT
+ "xport(obj, id) Export identified property from object",
+ #endif
+ #ifdef TEST_CVTARGS
+ "cvtargs(b, c, ...) Test JS_ConvertArguments",
+ #endif
+ "build() Show build date and time",
+ "clear([obj]) Clear properties of object",
+ "intern(str) Internalize str in the atom table",
+ "clone(fun[, scope]) Clone function object",
+ "seal(obj[, deep]) Seal object, or object graph if deep",
+ "getpda(obj) Get the property descriptors for obj",
+ "getslx(obj) Get script line extent",
+ "toint32(n) Testing hook for JS_ValueToInt32",
+ 0
+ };
+
+ static void
+ ShowHelpHeader(void)
+ {
+ fprintf(gOutFile, "%-9s %-22s %s\n", "Command", "Usage", "Description");
+ fprintf(gOutFile, "%-9s %-22s %s\n", "=======", "=====", "===========");
+ }
+
+ static void
+ ShowHelpForCommand(uintN n)
+ {
+ fprintf(gOutFile, "%-9.9s %s\n", shell_functions[n].name, shell_help_messages[n]);
+ }
+
+ static JSBool
+ Help(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ uintN i, j;
+ int did_header, did_something;
+ JSType type;
+ JSFunction *fun;
+ JSString *str;
+ const char *bytes;
+
+ fprintf(gOutFile, "%s\n", JS_GetImplementationVersion());
+ if (argc == 0) {
+ ShowHelpHeader();
+ for (i = 0; shell_functions[i].name; i++)
+ ShowHelpForCommand(i);
+ } else {
+ did_header = 0;
+ for (i = 0; i < argc; i++) {
+ did_something = 0;
+ type = JS_TypeOfValue(cx, argv[i]);
+ if (type == JSTYPE_FUNCTION) {
+ fun = JS_ValueToFunction(cx, argv[i]);
+ str = fun->atom ? ATOM_TO_STRING(fun->atom) : NULL;
+ } else if (type == JSTYPE_STRING) {
+ str = JSVAL_TO_STRING(argv[i]);
+ } else {
+ str = NULL;
+ }
+ if (str) {
+ bytes = JS_GetStringBytes(str);
+ for (j = 0; shell_functions[j].name; j++) {
+ if (!strcmp(bytes, shell_functions[j].name)) {
+ if (!did_header) {
+ did_header = 1;
+ ShowHelpHeader();
+ }
+ did_something = 1;
+ ShowHelpForCommand(j);
+ break;
+ }
+ }
+ }
+ if (!did_something) {
+ str = JS_ValueToString(cx, argv[i]);
+ if (!str)
+ return JS_FALSE;
+ fprintf(gErrFile, "Sorry, no help for %s\n",
+ JS_GetStringBytes(str));
+ }
+ }
+ }
+ return JS_TRUE;
+ }
+
+ /*
+ * Define a JS object called "it". Give it class operations that printf why
+ * they're being called for tutorial purposes.
+ */
+ enum its_tinyid {
+ ITS_COLOR, ITS_HEIGHT, ITS_WIDTH, ITS_FUNNY, ITS_ARRAY, ITS_RDONLY
+ };
+
+ static JSPropertySpec its_props[] = {
+ {"color", ITS_COLOR, JSPROP_ENUMERATE},
+ {"height", ITS_HEIGHT, JSPROP_ENUMERATE},
+ {"width", ITS_WIDTH, JSPROP_ENUMERATE},
+ {"funny", ITS_FUNNY, JSPROP_ENUMERATE},
+ {"array", ITS_ARRAY, JSPROP_ENUMERATE},
+ {"rdonly", ITS_RDONLY, JSPROP_READONLY},
+ {0}
+ };
+
+ static JSBool
+ its_item(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ *rval = OBJECT_TO_JSVAL(obj);
+ if (argc != 0)
+ JS_SetCallReturnValue2(cx, argv[0]);
+ return JS_TRUE;
+ }
+
+ static JSBool
+ its_bindMethod(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
+ jsval *rval)
+ {
+ char *name;
+ JSObject *method;
+
+ if (!JS_ConvertArguments(cx, argc, argv, "so", &name, &method))
+ return JS_FALSE;
+
+ *rval = OBJECT_TO_JSVAL(method);
+
+ if (JS_TypeOfValue(cx, *rval) != JSTYPE_FUNCTION) {
+ JSString *valstr = JS_ValueToString(cx, *rval);
+ if (valstr) {
+ JS_ReportError(cx, "can't bind method %s to non-callable object %s",
+ name, JS_GetStringBytes(valstr));
+ }
+ return JS_FALSE;
+ }
+
+ if (!JS_DefineProperty(cx, obj, name, *rval, NULL, NULL, JSPROP_ENUMERATE))
+ return JS_FALSE;
+
+ return JS_SetParent(cx, method, obj);
+ }
+
+ static JSFunctionSpec its_methods[] = {
+ {"item", its_item, 0},
+ {"bindMethod", its_bindMethod, 2},
+ {0}
+ };
+
+ #ifdef JSD_LOWLEVEL_SOURCE
+ /*
+ * This facilitates sending source to JSD (the debugger system) in the shell
+ * where the source is loaded using the JSFILE hack in jsscan. The function
+ * below is used as a callback for the jsdbgapi JS_SetSourceHandler hook.
+ * A more normal embedding (e.g. mozilla) loads source itself and can send
+ * source directly to JSD without using this hook scheme.
+ */
+ static void
+ SendSourceToJSDebugger(const char *filename, uintN lineno,
+ jschar *str, size_t length,
+ void **listenerTSData, JSDContext* jsdc)
+ {
+ JSDSourceText *jsdsrc = (JSDSourceText *) *listenerTSData;
+
+ if (!jsdsrc) {
+ if (!filename)
+ filename = "typein";
+ if (1 == lineno) {
+ jsdsrc = JSD_NewSourceText(jsdc, filename);
+ } else {
+ jsdsrc = JSD_FindSourceForURL(jsdc, filename);
+ if (jsdsrc && JSD_SOURCE_PARTIAL !=
+ JSD_GetSourceStatus(jsdc, jsdsrc)) {
+ jsdsrc = NULL;
+ }
+ }
+ }
+ if (jsdsrc) {
+ jsdsrc = JSD_AppendUCSourceText(jsdc,jsdsrc, str, length,
+ JSD_SOURCE_PARTIAL);
+ }
+ *listenerTSData = jsdsrc;
+ }
+ #endif /* JSD_LOWLEVEL_SOURCE */
+
+ static JSBool its_noisy; /* whether to be noisy when finalizing it */
+
+ static JSBool
+ its_addProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
+ {
+ if (its_noisy) {
+ fprintf(gOutFile, "adding its property %s,",
+ JS_GetStringBytes(JS_ValueToString(cx, id)));
+ fprintf(gOutFile, " initial value %s\n",
+ JS_GetStringBytes(JS_ValueToString(cx, *vp)));
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ its_delProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
+ {
+ if (its_noisy) {
+ fprintf(gOutFile, "deleting its property %s,",
+ JS_GetStringBytes(JS_ValueToString(cx, id)));
+ fprintf(gOutFile, " current value %s\n",
+ JS_GetStringBytes(JS_ValueToString(cx, *vp)));
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ its_getProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
+ {
+ if (its_noisy) {
+ fprintf(gOutFile, "getting its property %s,",
+ JS_GetStringBytes(JS_ValueToString(cx, id)));
+ fprintf(gOutFile, " current value %s\n",
+ JS_GetStringBytes(JS_ValueToString(cx, *vp)));
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ its_setProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
+ {
+ if (its_noisy) {
+ fprintf(gOutFile, "setting its property %s,",
+ JS_GetStringBytes(JS_ValueToString(cx, id)));
+ fprintf(gOutFile, " new value %s\n",
+ JS_GetStringBytes(JS_ValueToString(cx, *vp)));
+ }
+ if (JSVAL_IS_STRING(id) &&
+ !strcmp(JS_GetStringBytes(JSVAL_TO_STRING(id)), "noisy")) {
+ return JS_ValueToBoolean(cx, *vp, &its_noisy);
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ its_enumerate(JSContext *cx, JSObject *obj)
+ {
+ if (its_noisy)
+ fprintf(gOutFile, "enumerate its properties\n");
+ return JS_TRUE;
+ }
+
+ static JSBool
+ its_resolve(JSContext *cx, JSObject *obj, jsval id, uintN flags,
+ JSObject **objp)
+ {
+ if (its_noisy) {
+ fprintf(gOutFile, "resolving its property %s, flags {%s,%s,%s}\n",
+ JS_GetStringBytes(JS_ValueToString(cx, id)),
+ (flags & JSRESOLVE_QUALIFIED) ? "qualified" : "",
+ (flags & JSRESOLVE_ASSIGNING) ? "assigning" : "",
+ (flags & JSRESOLVE_DETECTING) ? "detecting" : "");
+ }
+ return JS_TRUE;
+ }
+
+ static JSBool
+ its_convert(JSContext *cx, JSObject *obj, JSType type, jsval *vp)
+ {
+ if (its_noisy)
+ fprintf(gOutFile, "converting it to %s type\n", JS_GetTypeName(cx, type));
+ return JS_TRUE;
+ }
+
+ static void
+ its_finalize(JSContext *cx, JSObject *obj)
+ {
+ if (its_noisy)
+ fprintf(gOutFile, "finalizing it\n");
+ }
+
+ static JSClass its_class = {
+ "It", JSCLASS_NEW_RESOLVE,
+ its_addProperty, its_delProperty, its_getProperty, its_setProperty,
+ its_enumerate, (JSResolveOp)its_resolve,
+ its_convert, its_finalize
+ };
+
+ JSErrorFormatString jsShell_ErrorFormatString[JSErr_Limit] = {
+ #if JS_HAS_DFLT_MSG_STRINGS
+ #define MSG_DEF(name, number, count, exception, format) \
+ { format, count } ,
+ #else
+ #define MSG_DEF(name, number, count, exception, format) \
+ { NULL, count } ,
+ #endif
+ #include "jsshell.msg"
+ #undef MSG_DEF
+ };
+
+ static const JSErrorFormatString *
+ my_GetErrorMessage(void *userRef, const char *locale, const uintN errorNumber)
+ {
+ if ((errorNumber > 0) && (errorNumber < JSShellErr_Limit))
+ return &jsShell_ErrorFormatString[errorNumber];
+ return NULL;
+ }
+
+ static void
+ my_LoadErrorReporter(JSContext *cx, const char *message, JSErrorReport *report)
+ {
+ if (!report) {
+ fprintf(gErrFile, "%s\n", message);
+ return;
+ }
+
+ /* Ignore any exceptions */
+ if (JSREPORT_IS_EXCEPTION(report->flags))
+ return;
+
+ /* Otherwise, fall back to the ordinary error reporter. */
+ my_ErrorReporter(cx, message, report);
+ }
+
+ static void
+ my_ErrorReporter(JSContext *cx, const char *message, JSErrorReport *report)
+ {
+ int i, j, k, n;
+ char *prefix, *tmp;
+ const char *ctmp;
+
+ if (!report) {
+ fprintf(gErrFile, "%s\n", message);
+ return;
+ }
+
+ /* Conditionally ignore reported warnings. */
+ if (JSREPORT_IS_WARNING(report->flags) && !reportWarnings)
+ return;
+
+ prefix = NULL;
+ if (report->filename)
+ prefix = JS_smprintf("%s:", report->filename);
+ if (report->lineno) {
+ tmp = prefix;
+ prefix = JS_smprintf("%s%u: ", tmp ? tmp : "", report->lineno);
+ JS_free(cx, tmp);
+ }
+ if (JSREPORT_IS_WARNING(report->flags)) {
+ tmp = prefix;
+ prefix = JS_smprintf("%s%swarning: ",
+ tmp ? tmp : "",
+ JSREPORT_IS_STRICT(report->flags) ? "strict " : "");
+ JS_free(cx, tmp);
+ }
+
+ /* embedded newlines -- argh! */
+ while ((ctmp = strchr(message, '\n')) != 0) {
+ ctmp++;
+ if (prefix)
+ fputs(prefix, gErrFile);
+ fwrite(message, 1, ctmp - message, gErrFile);
+ message = ctmp;
+ }
+
+ /* If there were no filename or lineno, the prefix might be empty */
+ if (prefix)
+ fputs(prefix, gErrFile);
+ fputs(message, gErrFile);
+
+ if (!report->linebuf) {
+ fputc('\n', gErrFile);
+ goto out;
+ }
+
+ /* report->linebuf usually ends with a newline. */
+ n = strlen(report->linebuf);
+ fprintf(gErrFile, ":\n%s%s%s%s",
+ prefix,
+ report->linebuf,
+ (n > 0 && report->linebuf[n-1] == '\n') ? "" : "\n",
+ prefix);
+ n = PTRDIFF(report->tokenptr, report->linebuf, char);
+ for (i = j = 0; i < n; i++) {
+ if (report->linebuf[i] == '\t') {
+ for (k = (j + 8) & ~7; j < k; j++) {
+ fputc('.', gErrFile);
+ }
+ continue;
+ }
+ fputc('.', gErrFile);
+ j++;
+ }
+ fputs("^\n", gErrFile);
+ out:
+ if (!JSREPORT_IS_WARNING(report->flags))
+ gExitCode = EXITCODE_RUNTIME_ERROR;
+ JS_free(cx, prefix);
+ }
+
+ #if defined(SHELL_HACK) && defined(DEBUG) && defined(XP_UNIX)
+ static JSBool
+ Exec(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSFunction *fun;
+ const char *name, **nargv;
+ uintN i, nargc;
+ JSString *str;
+ pid_t pid;
+ int status;
+
+ fun = JS_ValueToFunction(cx, argv[-2]);
+ if (!fun)
+ return JS_FALSE;
+ if (!fun->atom)
+ return JS_TRUE;
+ name = JS_GetStringBytes(ATOM_TO_STRING(fun->atom));
+ nargc = 1 + argc;
+ nargv = JS_malloc(cx, (nargc + 1) * sizeof(char *));
+ if (!nargv)
+ return JS_FALSE;
+ nargv[0] = name;
+ for (i = 1; i < nargc; i++) {
+ str = JS_ValueToString(cx, argv[i-1]);
+ if (!str) {
+ JS_free(cx, nargv);
+ return JS_FALSE;
+ }
+ nargv[i] = JS_GetStringBytes(str);
+ }
+ nargv[nargc] = 0;
+ pid = fork();
+ switch (pid) {
+ case -1:
+ perror("js");
+ break;
+ case 0:
+ (void) execvp(name, (char **)nargv);
+ perror("js");
+ exit(127);
+ default:
+ while (waitpid(pid, &status, 0) < 0 && errno == EINTR)
+ continue;
+ break;
+ }
+ JS_free(cx, nargv);
+ return JS_TRUE;
+ }
+ #endif
+
+ #define LAZY_STANDARD_CLASSES
+
+ static JSBool
+ global_enumerate(JSContext *cx, JSObject *obj)
+ {
+ #ifdef LAZY_STANDARD_CLASSES
+ return JS_EnumerateStandardClasses(cx, obj);
+ #else
+ return JS_TRUE;
+ #endif
+ }
+
+ static JSBool
+ global_resolve(JSContext *cx, JSObject *obj, jsval id, uintN flags,
+ JSObject **objp)
+ {
+ #ifdef LAZY_STANDARD_CLASSES
+ if ((flags & JSRESOLVE_ASSIGNING) == 0) {
+ JSBool resolved;
+
+ if (!JS_ResolveStandardClass(cx, obj, id, &resolved))
+ return JS_FALSE;
+ if (resolved) {
+ *objp = obj;
+ return JS_TRUE;
+ }
+ }
+ #endif
+
+ #if defined(SHELL_HACK) && defined(DEBUG) && defined(XP_UNIX)
+ if ((flags & (JSRESOLVE_QUALIFIED | JSRESOLVE_ASSIGNING)) == 0) {
+ /*
+ * Do this expensive hack only for unoptimized Unix builds, which are
+ * not used for benchmarking.
+ */
+ char *path, *comp, *full;
+ const char *name;
+ JSBool ok, found;
+ JSFunction *fun;
+
+ if (!JSVAL_IS_STRING(id))
+ return JS_TRUE;
+ path = getenv("PATH");
+ if (!path)
+ return JS_TRUE;
+ path = JS_strdup(cx, path);
+ if (!path)
+ return JS_FALSE;
+ name = JS_GetStringBytes(JSVAL_TO_STRING(id));
+ ok = JS_TRUE;
+ for (comp = strtok(path, ":"); comp; comp = strtok(NULL, ":")) {
+ if (*comp != '\0') {
+ full = JS_smprintf("%s/%s", comp, name);
+ if (!full) {
+ JS_ReportOutOfMemory(cx);
+ ok = JS_FALSE;
+ break;
+ }
+ } else {
+ full = (char *)name;
+ }
+ found = (access(full, X_OK) == 0);
+ if (*comp != '\0')
+ free(full);
+ if (found) {
+ fun = JS_DefineFunction(cx, obj, name, Exec, 0,
+ JSPROP_ENUMERATE);
+ ok = (fun != NULL);
+ if (ok)
+ *objp = obj;
+ break;
+ }
+ }
+ JS_free(cx, path);
+ return ok;
+ }
+ #else
+ return JS_TRUE;
+ #endif
+ }
+
+ JSClass global_class = {
+ "global", JSCLASS_NEW_RESOLVE,
+ JS_PropertyStub, JS_PropertyStub,
+ JS_PropertyStub, JS_PropertyStub,
+ global_enumerate, (JSResolveOp) global_resolve,
+ JS_ConvertStub, JS_FinalizeStub
+ };
+
+ static JSBool
+ env_setProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
+ {
+ /* XXX porting may be easy, but these don't seem to supply setenv by default */
+ #if !defined XP_BEOS && !defined XP_OS2 && !defined SOLARIS
+ JSString *idstr, *valstr;
+ const char *name, *value;
+ int rv;
+
+ idstr = JS_ValueToString(cx, id);
+ valstr = JS_ValueToString(cx, *vp);
+ if (!idstr || !valstr)
+ return JS_FALSE;
+ name = JS_GetStringBytes(idstr);
+ value = JS_GetStringBytes(valstr);
+ #if defined XP_WIN || defined HPUX || defined OSF1 || defined IRIX
+ {
+ char *waste = JS_smprintf("%s=%s", name, value);
+ if (!waste) {
+ JS_ReportOutOfMemory(cx);
+ return JS_FALSE;
+ }
+ rv = putenv(waste);
+ #ifdef XP_WIN
+ /*
+ * HPUX9 at least still has the bad old non-copying putenv.
+ *
+ * Per mail from <s.shanmuganathan@digital.com>, OSF1 also has a putenv
+ * that will crash if you pass it an auto char array (so it must place
+ * its argument directly in the char *environ[] array).
+ */
+ free(waste);
+ #endif
+ }
+ #else
+ rv = setenv(name, value, 1);
+ #endif
+ if (rv < 0) {
+ JS_ReportError(cx, "can't set envariable %s to %s", name, value);
+ return JS_FALSE;
+ }
+ *vp = STRING_TO_JSVAL(valstr);
+ #endif /* !defined XP_BEOS && !defined XP_OS2 && !defined SOLARIS */
+ return JS_TRUE;
+ }
+
+ static JSBool
+ env_enumerate(JSContext *cx, JSObject *obj)
+ {
+ static JSBool reflected;
+ char **evp, *name, *value;
+ JSString *valstr;
+ JSBool ok;
+
+ if (reflected)
+ return JS_TRUE;
+
+ for (evp = (char **)JS_GetPrivate(cx, obj); (name = *evp) != NULL; evp++) {
+ value = strchr(name, '=');
+ if (!value)
+ continue;
+ *value++ = '\0';
+ valstr = JS_NewStringCopyZ(cx, value);
+ if (!valstr) {
+ ok = JS_FALSE;
+ } else {
+ ok = JS_DefineProperty(cx, obj, name, STRING_TO_JSVAL(valstr),
+ NULL, NULL, JSPROP_ENUMERATE);
+ }
+ value[-1] = '=';
+ if (!ok)
+ return JS_FALSE;
+ }
+
+ reflected = JS_TRUE;
+ return JS_TRUE;
+ }
+
+ static JSBool
+ env_resolve(JSContext *cx, JSObject *obj, jsval id, uintN flags,
+ JSObject **objp)
+ {
+ JSString *idstr, *valstr;
+ const char *name, *value;
+
+ if (flags & JSRESOLVE_ASSIGNING)
+ return JS_TRUE;
+
+ idstr = JS_ValueToString(cx, id);
+ if (!idstr)
+ return JS_FALSE;
+ name = JS_GetStringBytes(idstr);
+ value = getenv(name);
+ if (value) {
+ valstr = JS_NewStringCopyZ(cx, value);
+ if (!valstr)
+ return JS_FALSE;
+ if (!JS_DefineProperty(cx, obj, name, STRING_TO_JSVAL(valstr),
+ NULL, NULL, JSPROP_ENUMERATE)) {
+ return JS_FALSE;
+ }
+ *objp = obj;
+ }
+ return JS_TRUE;
+ }
+
+ static JSClass env_class = {
+ "environment", JSCLASS_HAS_PRIVATE | JSCLASS_NEW_RESOLVE,
+ JS_PropertyStub, JS_PropertyStub,
+ JS_PropertyStub, env_setProperty,
+ env_enumerate, (JSResolveOp) env_resolve,
+ JS_ConvertStub, JS_FinalizeStub
+ };
+
+ #ifdef NARCISSUS
+
+ static JSBool
+ defineProperty(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
+ jsval *rval)
+ {
+ JSString *str;
+ jsval value;
+ JSBool dontDelete, readOnly, dontEnum;
+ const jschar *chars;
+ size_t length;
+ uintN attrs;
+
+ dontDelete = readOnly = dontEnum = JS_FALSE;
+ if (!JS_ConvertArguments(cx, argc, argv, "Sv/bbb",
+ &str, &value, &dontDelete, &readOnly, &dontEnum)) {
+ return JS_FALSE;
+ }
+ chars = JS_GetStringChars(str);
+ length = JS_GetStringLength(str);
+ attrs = dontEnum ? 0 : JSPROP_ENUMERATE;
+ if (dontDelete)
+ attrs |= JSPROP_PERMANENT;
+ if (readOnly)
+ attrs |= JSPROP_READONLY;
+ return JS_DefineUCProperty(cx, obj, chars, length, value, NULL, NULL,
+ attrs);
+ }
+
+ static JSBool
+ Evaluate(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ /* function evaluate(source, filename, lineno) { ... } */
+ JSString *source;
+ const char *filename = "";
+ jsuint lineno = 0;
+ uint32 oldopts;
+ JSBool ok;
+
+ if (argc == 0) {
+ *rval = JSVAL_VOID;
+ return JS_TRUE;
+ }
+
+ if (!JS_ConvertArguments(cx, argc, argv, "S/su",
+ &source, &filename, &lineno)) {
+ return JS_FALSE;
+ }
+
+ oldopts = JS_GetOptions(cx);
+ JS_SetOptions(cx, oldopts | JSOPTION_COMPILE_N_GO);
+ ok = JS_EvaluateUCScript(cx, obj, JS_GetStringChars(source),
+ JS_GetStringLength(source), filename,
+ lineno, rval);
+ JS_SetOptions(cx, oldopts);
+
+ return ok;
+ }
+
+ #include <fcntl.h>
+ #include <sys/stat.h>
+
+ /*
+ * Returns a JS_malloc'd string (that the caller needs to JS_free)
+ * containing the directory (non-leaf) part of |from| prepended to |leaf|.
+ * If |from| is empty or a leaf, MakeAbsolutePathname returns a copy of leaf.
+ * Returns NULL to indicate an error.
+ */
+ static char *
+ MakeAbsolutePathname(JSContext *cx, const char *from, const char *leaf)
+ {
+ size_t dirlen;
+ char *dir;
+ const char *slash = NULL, *cp;
+
+ cp = from;
+ while (*cp) {
+ if (*cp == '/'
+ #ifdef XP_WIN
+ || *cp == '\\'
+ #endif
+ ) {
+ slash = cp;
+ }
+
+ ++cp;
+ }
+
+ if (!slash) {
+ /* We were given a leaf or |from| was empty. */
+ return JS_strdup(cx, leaf);
+ }
+
+ /* Else, we were given a real pathname, return that + the leaf. */
+ dirlen = slash - from + 1;
+ dir = JS_malloc(cx, dirlen + strlen(leaf) + 1);
+ if (!dir)
+ return NULL;
+
+ strncpy(dir, from, dirlen);
+ strcpy(dir + dirlen, leaf); /* Note: we can't use strcat here. */
+
+ return dir;
+ }
+
+ static JSBool
+ snarf(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+ {
+ JSString *str;
+ const char *filename;
+ char *pathname;
+ JSStackFrame *fp;
+ int fd, cc;
+ JSBool ok;
+ size_t len;
+ char *buf;
+ struct stat sb;
+
+ str = JS_ValueToString(cx, argv[0]);
+ if (!str)
+ return JS_FALSE;
+ filename = JS_GetStringBytes(str);
+
+ /* Get the currently executing script's name. */
+ fp = JS_GetScriptedCaller(cx, NULL);
+ JS_ASSERT(fp && fp->script->filename);
+ pathname = MakeAbsolutePathname(cx, fp->script->filename, filename);
+ if (!pathname)
+ return JS_FALSE;
+
+ fd = open(pathname, O_RDONLY);
+ ok = JS_TRUE;
+ len = 0;
+ buf = NULL;
+ if (fd < 0) {
+ JS_ReportError(cx, "can't open %s: %s", pathname, strerror(errno));
+ ok = JS_FALSE;
+ } else if (fstat(fd, &sb) < 0) {
+ JS_ReportError(cx, "can't stat %s", pathname);
+ ok = JS_FALSE;
+ } else {
+ len = sb.st_size;
+ buf = JS_malloc(cx, len + 1);
+ if (!buf) {
+ ok = JS_FALSE;
+ } else if ((cc = read(fd, buf, len)) != len) {
+ JS_free(cx, buf);
+ JS_ReportError(cx, "can't read %s: %s", pathname,
+ (cc < 0) ? strerror(errno) : "short read");
+ ok = JS_FALSE;
+ }
+ }
+ close(fd);
+ JS_free(cx, pathname);
+ if (!ok)
+ return ok;
+ buf[len] = '\0';
+ str = JS_NewString(cx, buf, len);
+ if (!str) {
+ JS_free(cx, buf);
+ return JS_FALSE;
+ }
+ *rval = STRING_TO_JSVAL(str);
+ return JS_TRUE;
+ }
+
+ #endif /* NARCISSUS */
+
+ int
+ main(int argc, char **argv, char **envp)
+ {
+ int stackDummy;
+ JSRuntime *rt;
+ JSContext *cx;
+ JSObject *glob, *it, *envobj;
+ int result;
+ #ifdef LIVECONNECT
+ JavaVM *java_vm = NULL;
+ #endif
+ #ifdef JSDEBUGGER_JAVA_UI
+ JNIEnv *java_env;
+ #endif
+
+ gStackBase = (jsuword)&stackDummy;
+
+ #ifdef XP_OS2
+ /* these streams are normally line buffered on OS/2 and need a \n, *
+ * so we need to unbuffer then to get a reasonable prompt */
+ setbuf(stdout,0);
+ setbuf(stderr,0);
+ #endif
+
+ gErrFile = stderr;
+ gOutFile = stdout;
+
+ argc--;
+ argv++;
+
+ rt = JS_NewRuntime(64L * 1024L * 1024L);
+ if (!rt)
+ return 1;
+
+ cx = JS_NewContext(rt, gStackChunkSize);
+ if (!cx)
+ return 1;
+ JS_SetErrorReporter(cx, my_ErrorReporter);
+
+ glob = JS_NewObject(cx, &global_class, NULL, NULL);
+ if (!glob)
+ return 1;
+ #ifdef LAZY_STANDARD_CLASSES
+ JS_SetGlobalObject(cx, glob);
+ #else
+ if (!JS_InitStandardClasses(cx, glob))
+ return 1;
+ #ifdef OSSP
+ #if JS_HAS_FILE_OBJECT
+ if (!js_InitFileClass(cx, glob))
+ return 1;
+ #endif
+ #endif
+ #endif
+ if (!JS_DefineFunctions(cx, glob, shell_functions))
+ return 1;
+
+ it = JS_DefineObject(cx, glob, "it", &its_class, NULL, 0);
+ if (!it)
+ return 1;
+ if (!JS_DefineProperties(cx, it, its_props))
+ return 1;
+ if (!JS_DefineFunctions(cx, it, its_methods))
+ return 1;
+
+ #ifdef PERLCONNECT
+ if (!JS_InitPerlClass(cx, glob))
+ return 1;
+ #endif
+
+ #ifdef JSDEBUGGER
+ /*
+ * XXX A command line option to enable debugging (or not) would be good
+ */
+ _jsdc = JSD_DebuggerOnForUser(rt, NULL, NULL);
+ if (!_jsdc)
+ return 1;
+ JSD_JSContextInUse(_jsdc, cx);
+ #ifdef JSD_LOWLEVEL_SOURCE
+ JS_SetSourceHandler(rt, SendSourceToJSDebugger, _jsdc);
+ #endif /* JSD_LOWLEVEL_SOURCE */
+ #ifdef JSDEBUGGER_JAVA_UI
+ _jsdjc = JSDJ_CreateContext();
+ if (! _jsdjc)
+ return 1;
+ JSDJ_SetJSDContext(_jsdjc, _jsdc);
+ java_env = JSDJ_CreateJavaVMAndStartDebugger(_jsdjc);
+ #ifdef LIVECONNECT
+ if (java_env)
+ (*java_env)->GetJavaVM(java_env, &java_vm);
+ #endif
+ /*
+ * XXX This would be the place to wait for the debugger to start.
+ * Waiting would be nice in general, but especially when a js file
+ * is passed on the cmd line.
+ */
+ #endif /* JSDEBUGGER_JAVA_UI */
+ #ifdef JSDEBUGGER_C_UI
+ JSDB_InitDebugger(rt, _jsdc, 0);
+ #endif /* JSDEBUGGER_C_UI */
+ #endif /* JSDEBUGGER */
+
+ #ifdef LIVECONNECT
+ if (!JSJ_SimpleInit(cx, glob, java_vm, getenv("CLASSPATH")))
+ return 1;
+ #endif
+
+ envobj = JS_DefineObject(cx, glob, "environment", &env_class, NULL, 0);
+ if (!envobj || !JS_SetPrivate(cx, envobj, envp))
+ return 1;
+
+ #ifdef NARCISSUS
+ {
+ jsval v;
+ static const char Object_prototype[] = "Object.prototype";
+
+ if (!JS_DefineFunction(cx, glob, "snarf", snarf, 1, 0))
+ return 1;
+ if (!JS_DefineFunction(cx, glob, "evaluate", Evaluate, 3, 0))
+ return 1;
+
+ if (!JS_EvaluateScript(cx, glob,
+ Object_prototype, sizeof Object_prototype - 1,
+ NULL, 0, &v)) {
+ return 1;
+ }
+ if (!JS_DefineFunction(cx, JSVAL_TO_OBJECT(v), "__defineProperty__",
+ defineProperty, 5, 0)) {
+ return 1;
+ }
+ }
+ #endif
+
+ result = ProcessArgs(cx, glob, argv, argc);
+
+ #ifdef JSDEBUGGER
+ if (_jsdc)
+ JSD_DebuggerOff(_jsdc);
+ #endif /* JSDEBUGGER */
+
+ JS_DestroyContext(cx);
+ JS_DestroyRuntime(rt);
+ JS_ShutDown();
+ return result;
+ }
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