Cleaned up JS debug helpers, made them easier to use and added some basic documentation.
git-svn-id: http://svn.berlios.de/svnroot/repos/oolite-linux/trunk@4071 127b21dd-08f5-0310-b4b7-95ae10353056master
Jens Ayton
parent
5bea193153
commit
676ed097e9
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@ -599,6 +599,7 @@
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1ABDBA3B0EB365D90086BC3D /* OOIsNumberLiteral.m in Sources */ = {isa = PBXBuildFile; fileRef = 1ABDBA390EB365D90086BC3D /* OOIsNumberLiteral.m */; };
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1ABDBA3C0EB365D90086BC3D /* OOIsNumberLiteral.h in Headers */ = {isa = PBXBuildFile; fileRef = 1ABDBA3A0EB365D90086BC3D /* OOIsNumberLiteral.h */; };
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1ABF219B12D691B300075821 /* Oolite.docktileplugin in Copy Plug-ins */ = {isa = PBXBuildFile; fileRef = 1A01BCE711C569DF0011197F /* Oolite.docktileplugin */; };
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1AC0F29E12E1DADC00ECBBB0 /* OOJSEngineDebuggerHelpers.m in Sources */ = {isa = PBXBuildFile; fileRef = 1AC0F29D12E1DADC00ECBBB0 /* OOJSEngineDebuggerHelpers.m */; };
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1AC27A0F0EA7E9940054E5F0 /* OOJSEquipmentInfo.h in Headers */ = {isa = PBXBuildFile; fileRef = 1AC27A0D0EA7E9940054E5F0 /* OOJSEquipmentInfo.h */; };
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1AC27A100EA7E9940054E5F0 /* OOJSEquipmentInfo.m in Sources */ = {isa = PBXBuildFile; fileRef = 1AC27A0E0EA7E9940054E5F0 /* OOJSEquipmentInfo.m */; };
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1AC544FA0D4D217900C90E5B /* oolite-font.png in Copy Textures */ = {isa = PBXBuildFile; fileRef = 1AC544F90D4D217900C90E5B /* oolite-font.png */; };
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@ -1830,6 +1831,7 @@
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1AC0E9490B974DC200C46994 /* LICENSE.TXT */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = LICENSE.TXT; sourceTree = "<group>"; };
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1AC0E94A0B974DC200C46994 /* PORTING.TXT */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = PORTING.TXT; sourceTree = "<group>"; };
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1AC0E94B0B974DC200C46994 /* README_LINUX.TXT */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = README_LINUX.TXT; sourceTree = "<group>"; };
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1AC0F29D12E1DADC00ECBBB0 /* OOJSEngineDebuggerHelpers.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = OOJSEngineDebuggerHelpers.m; sourceTree = "<group>"; };
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1AC27A0D0EA7E9940054E5F0 /* OOJSEquipmentInfo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = OOJSEquipmentInfo.h; sourceTree = "<group>"; };
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1AC27A0E0EA7E9940054E5F0 /* OOJSEquipmentInfo.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = OOJSEquipmentInfo.m; sourceTree = "<group>"; };
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1AC544F90D4D217900C90E5B /* oolite-font.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "oolite-font.png"; sourceTree = "<group>"; };
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@ -2563,6 +2565,7 @@
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2B4CDFEB107B3D8400526C98 /* OOJSManifest.m */,
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1A5DBA9A0BC000DC00D57389 /* OOJavaScriptEngine.h */,
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1A5DBA9B0BC000DC00D57389 /* OOJavaScriptEngine.m */,
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1AC0F29D12E1DADC00ECBBB0 /* OOJSEngineDebuggerHelpers.m */,
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1A11C2AF11CFC35000F3EE77 /* OOJSEngineTimeManagement.h */,
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1A11C2B011CFC35000F3EE77 /* OOJSEngineTimeManagement.m */,
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1ABC47FC0F155F0500B977AD /* OOJSFunction.h */,
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@ -3857,6 +3860,7 @@
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1A09EF4412BD0BCA00BF7F48 /* PlayerEntityStickMapper.m in Sources */,
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1AB5E1F012BD628500C334DD /* OOJoystickManager.m in Sources */,
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1A0942CE12D7D5B9003B6273 /* OOJSFrameCallbacks.m in Sources */,
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1AC0F29E12E1DADC00ECBBB0 /* OOJSEngineDebuggerHelpers.m in Sources */,
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);
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runOnlyForDeploymentPostprocessing = 0;
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};
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@ -67,3 +67,6 @@ _JSObjectToStrDbg
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_JSStringToStrDbg
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_JSValueTypeDbg
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_JSValueToStrSafeDbg
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_JSObjectToStrSafeDbg
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_JSStringToStrSafeDbg
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_JSIDToStrSafeDbg
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@ -72,3 +72,6 @@ _JSObjectToStrDbg
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_JSStringToStrDbg
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_JSValueTypeDbg
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_JSValueToStrSafeDbg
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_JSObjectToStrSafeDbg
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_JSStringToStrSafeDbg
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_JSIDToStrSafeDbg
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@ -0,0 +1,237 @@
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/*
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OOJSEngineDebuggerHelpers.m
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JavaScript support for Oolite
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Copyright (C) 2007-2011 David Taylor and Jens Ayton.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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*/
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/*
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These functions exist to help debugging JavaScript code. They can be called
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directly from gdb, for example:
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call (char *)JSValueToStrDbg(someValue)
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The functions are:
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const char *JSValueToStrDbg(jsval)
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const char *JSObjectToStrDbg(JSObject *)
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const char *JSStringToStrDbg(JSString *)
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Converts any JS value/object/JSString to a string, using the complete
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process and potentially calling into SpiderMonkey with a secondory
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contenxt and invoking JS toString() methods. This might mess up
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SpiderMonkey internal state in some cases.
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const char *JSValueToStrSafeDbg(jsval)
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const char *JSObjectToStrSafeDbg(JSObject *)
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const char *JSStringToStrSafeDbg(JSString *)
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As above, but without calling into SpiderMonkey functions that require
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a context. In particular, as of the FF4b9 version of SpiderMonkey only
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interned strings can be converted, and for objects only the class name
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is provided.
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const char *JSIDToStrSafeDbg(jsid)
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Like JSValueToStrSafeDbg() for jsids. (String jsids must always be
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interned, so this is generally sufficient.)
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const char *JSValueTypeDbg(jsval)
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Returns the type of the jsval, or the class name if it's an object.
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All dynamic strings are autorelease.
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Another useful function is OOJSDumpStack (results are found in the log):
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call OOJSDumpStack(context)
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A set of macros can be found in tools/gdb-macros.txt.
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In addition to calling them from the debug console, Xcode users might want
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to use them in data formatters (by double-clicking the "Summary" field for
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a variable of the appropriate type). I recommend the following:
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jsval: {JSValueToStrSafeDbg($VAR)}:s
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jsval*: {JSValueToStrSafeDbg(*$VAR)}:s
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jsid: {JSIDToStrSafeDbg($VAR)}:s
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JSObject*: {JSObjectToStrSafeDbg($VAR)}:s
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JSString*: {JSStringToStrSafeDbg($VAR)}:s
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These, and a variety of Oolite type formatters, can be set up using
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Mac-specific/DataFormatters.
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*/
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#ifndef NDEBUG
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#import "OOJavaScriptEngine.h"
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#pragma GCC visibility push (default)
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const char *JSValueToStrDbg(jsval val)
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{
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OOJavaScriptEngine *jsEngine = [OOJavaScriptEngine sharedEngine];
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JSContext *context = [jsEngine acquireContext];
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JS_BeginRequest(context);
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const char *result = [[NSString stringWithJavaScriptValue:val inContext:context] UTF8String];
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JS_EndRequest(context);
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[jsEngine releaseContext:context];
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return result;
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}
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const char *JSObjectToStrDbg(JSObject *obj)
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{
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if (obj == NULL) return "null";
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return JSValueToStrDbg(OBJECT_TO_JSVAL(obj));
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}
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const char *JSStringToStrDbg(JSString *str)
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{
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if (str == NULL) return "null";
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return JSValueToStrDbg(STRING_TO_JSVAL(str));
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}
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const char *JSValueTypeDbg(jsval val)
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{
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if (JSVAL_IS_INT(val)) return "integer";
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if (JSVAL_IS_DOUBLE(val)) return "double";
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if (JSVAL_IS_STRING(val)) return "string";
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if (JSVAL_IS_BOOLEAN(val)) return "boolean";
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if (JSVAL_IS_NULL(val)) return "null";
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if (JSVAL_IS_VOID(val)) return "void";
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#if OO_NEW_JS && defined(JS_USE_JSVAL_JSID_STRUCT_TYPES)
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if (JSVAL_IS_MAGIC_IMPL(val))
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{
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switch(val.s.payload.why)
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{
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case JS_ARRAY_HOLE: return "magic (array hole)";
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case JS_ARGS_HOLE: return "magic (args hole)";
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case JS_NATIVE_ENUMERATE: return "magic (native enumerate)";
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case JS_NO_ITER_VALUE: return "magic (no iter value)";
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case JS_GENERATOR_CLOSING: return "magic (generator closing)";
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case JS_NO_CONSTANT: return "magic (no constant)";
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case JS_THIS_POISON: return "magic (this poison)";
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case JS_ARG_POISON: return "magic (arg poison)";
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case JS_SERIALIZE_NO_NODE: return "magic (serialize no node)";
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case JS_GENERIC_MAGIC: return "magic (generic)";
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};
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return "magic";
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}
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#endif
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if (JSVAL_IS_OBJECT(val)) return OOJSGetClass(NULL, JSVAL_TO_OBJECT(val))->name; // Fun fact: although a context is required if JS_THREADSAFE is defined, it isn't actually used.
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return "unknown";
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}
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// Doesn't follow pointers, mess with requests or otherwise poke the SpiderMonkey.
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const char *JSValueToStrSafeDbg(jsval val)
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{
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NSString *formatted = nil;
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if (JSVAL_IS_INT(val)) formatted = [NSString stringWithFormat:@"%i", (long)JSVAL_TO_INT(val)];
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else if (JSVAL_IS_DOUBLE(val)) formatted = [NSString stringWithFormat:@"%g", JSVAL_TO_DOUBLE(val)];
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else if (JSVAL_IS_BOOLEAN(val)) formatted = (JSVAL_TO_BOOLEAN(val)) ? @"true" : @"false";
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else if (JSVAL_IS_STRING(val))
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{
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JSString *string = JSVAL_TO_STRING(val);
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const jschar *chars = NULL;
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size_t length = JS_GetStringLength(string);
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#if OO_NEW_JS && OOJS_FF4B9
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if (JS_StringHasBeenInterned(string))
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{
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chars = JS_GetInternedStringChars(string);
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}
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// Flat strings can be extracted without a context, but cannot be detected.
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#else
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chars = JS_GetStringChars(string);
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#endif
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if (chars == NULL) formatted = [NSString stringWithFormat:@"string [%zu chars]", length];
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else formatted = [NSString stringWithCharacters:chars length:length];
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}
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else if (JSVAL_IS_VOID(val)) return "undefined";
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else return JSValueTypeDbg(val);
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return [formatted UTF8String];
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}
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const char *JSObjectToStrSafeDbg(JSObject *obj)
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{
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if (obj == NULL) return "null";
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return JSValueToStrSafeDbg(OBJECT_TO_JSVAL(obj));
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}
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const char *JSStringToStrSafeDbg(JSString *str)
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{
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if (str == NULL) return "null";
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return JSValueToStrSafeDbg(STRING_TO_JSVAL(str));
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}
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const char *JSIDToStrSafeDbg(jsid anID)
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{
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NSString *formatted = nil;
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if (JSID_IS_INT(anID)) formatted = [NSString stringWithFormat:@"%i", (long)JSID_TO_INT(anID)];
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else if (JSID_IS_VOID(anID)) return "void";
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else if (JSID_IS_EMPTY(anID)) return "empty";
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else if (JSID_IS_ZERO(anID)) return "0";
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else if (JSID_IS_OBJECT(anID)) return OOJSGetClass(NULL, JSID_TO_OBJECT(anID))->name;
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else if (JSID_IS_DEFAULT_XML_NAMESPACE(anID)) return "default XML namespace";
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else if (JSID_IS_STRING(anID))
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{
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JSString *string = JSID_TO_STRING(anID);
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const jschar *chars = NULL;
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size_t length = JS_GetStringLength(string);
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#if OO_NEW_JS && OOJS_FF4B9
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if (JS_StringHasBeenInterned(string))
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{
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chars = JS_GetInternedStringChars(string);
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}
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else
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{
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// Bug; jsid strings must be interned.
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return "*** uninterned string in jsid! ***";
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}
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#else
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chars = JS_GetStringChars(string);
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#endif
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formatted = [NSString stringWithFormat:@"\"%@\"", [NSString stringWithCharacters:chars length:length]];
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}
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else
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{
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formatted = [NSString stringWithFormat:@"unknown <0x%llX>", (long long)JSID_BITS(anID)];
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}
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return [formatted UTF8String];
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}
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#endif
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@ -769,11 +769,6 @@ OOINLINE const jschar *OOJSGetStringCharsAndLength(JSContext *context, JSString
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}
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#if !OOJS_FF4B9
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OOINLINE const jschar *JS_GetInternedStringChars(JSString *string) { return NULL; }
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#endif
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#define OOJSVAL_TO_DOUBLE JSVAL_TO_DOUBLE
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#else
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// In old API, jsvals could be pointers to doubles; in new, they're actual doubles.
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@ -789,9 +784,6 @@ OOINLINE const jschar *OOJSGetStringCharsAndLength(JSContext *context, JSString
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*length = JS_GetStringLength(string);
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return JS_GetStringChars(string);
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}
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OOINLINE const jschar *JS_GetInternedStringChars(JSString *string) { return NULL; }
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#endif
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@ -1611,104 +1611,6 @@ NSString *OOJSDebugDescribe(JSContext *context, jsval value)
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@end
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#ifndef NDEBUG
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// For use in debugger
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const char *JSValueToStrDbg(jsval val)
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{
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OOJavaScriptEngine *jsEngine = [OOJavaScriptEngine sharedEngine];
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JSContext *context = [jsEngine acquireContext];
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JS_BeginRequest(context);
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const char *result = [[NSString stringWithJavaScriptValue:val inContext:context] UTF8String];
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JS_EndRequest(context);
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[jsEngine releaseContext:context];
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return result;
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}
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const char *JSObjectToStrDbg(JSObject *obj)
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{
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if (obj == NULL) return "null";
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return JSValueToStrDbg(OBJECT_TO_JSVAL(obj));
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}
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const char *JSValueTypeDbg(jsval val)
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{
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if (JSVAL_IS_INT(val)) return "integer";
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if (JSVAL_IS_DOUBLE(val)) return "double";
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if (JSVAL_IS_STRING(val)) return "string";
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if (JSVAL_IS_BOOLEAN(val)) return "boolean";
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if (JSVAL_IS_NULL(val)) return "null";
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if (JSVAL_IS_VOID(val)) return "void";
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#if OO_NEW_JS && defined(JS_USE_JSVAL_JSID_STRUCT_TYPES)
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if (JSVAL_IS_MAGIC_IMPL(val))
|
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{
|
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switch(val.s.payload.why)
|
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{
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case JS_ARRAY_HOLE: return "magic (array hole)";
|
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case JS_ARGS_HOLE: return "magic (args hole)";
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case JS_NATIVE_ENUMERATE: return "magic (native enumerate)";
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case JS_NO_ITER_VALUE: return "magic (no iter value)";
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case JS_GENERATOR_CLOSING: return "magic (generator closing)";
|
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case JS_NO_CONSTANT: return "magic (no constant)";
|
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case JS_THIS_POISON: return "magic (this poison)";
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case JS_ARG_POISON: return "magic (arg poison)";
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case JS_SERIALIZE_NO_NODE: return "magic (serialize no node)";
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case JS_GENERIC_MAGIC: return "magic (generic)";
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};
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return "magic";
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}
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#endif
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if (JSVAL_IS_OBJECT(val)) return OOJSGetClass(NULL, JSVAL_TO_OBJECT(val))->name; // Fun fact: although a context is required if JS_THREADSAFE is defined, it isn't actually used.
|
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return "unknown";
|
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}
|
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|
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|
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// Doesn't follow pointers, mess with requests or otherwise poke the SpiderMonkey.
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const char *JSValueToStrSafeDbg(jsval val)
|
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{
|
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NSString *formatted = nil;
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|
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if (JSVAL_IS_INT(val)) formatted = [NSString stringWithFormat:@"%i", (long)JSVAL_TO_INT(val)];
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else if (JSVAL_IS_DOUBLE(val)) formatted = [NSString stringWithFormat:@"%g", JSVAL_TO_DOUBLE(val)];
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else if (JSVAL_IS_BOOLEAN(val)) formatted = (JSVAL_TO_BOOLEAN(val)) ? @"true" : @"false";
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else if (JSVAL_IS_STRING(val))
|
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{
|
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JSString *string = JSVAL_TO_STRING(val);
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const jschar *chars = NULL;
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size_t length = JS_GetStringLength(string);
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|
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#if OO_NEW_JS
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if (JS_StringHasBeenInterned(string))
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{
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chars = JS_GetInternedStringChars(string);
|
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}
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// Flat strings can be extracted without a context, but cannot be detected.
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#endif
|
||||
|
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if (chars == NULL) formatted = [NSString stringWithFormat:@"string [%zu chars]", length];
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else formatted = [NSString stringWithCharacters:chars length:length];
|
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}
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else if (JSVAL_IS_VOID(val)) return "undefined";
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else return JSValueTypeDbg(val);
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||||
return [formatted UTF8String];
|
||||
}
|
||||
|
||||
|
||||
const char *JSStringToStrDbg(JSString *str)
|
||||
{
|
||||
if (str == NULL) return "null";
|
||||
return JSValueToStrSafeDbg(STRING_TO_JSVAL(str));
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
@implementation NSArray (OOJavaScriptConversion)
|
||||
|
||||
- (jsval)oo_jsValueInContext:(JSContext *)context
|
||||
|
|
|
|||
|
|
@ -0,0 +1,87 @@
|
|||
# Oolite gdb conveniences
|
||||
# To use, copy into ~/.gdbinit.
|
||||
|
||||
define pjsv
|
||||
call (char *)JSValueToStrSafeDbg($arg0)
|
||||
end
|
||||
document psjv
|
||||
pjsv <value>
|
||||
Oolite
|
||||
Print a description of the specified JavaScript value (jsval).
|
||||
See also: pjso, pjss, pjsid, pjsvfull
|
||||
end
|
||||
|
||||
define pjso
|
||||
call (char *)JSObjectToStrSafeDbg($arg0)
|
||||
end
|
||||
document pjso
|
||||
pjso <value>
|
||||
Oolite
|
||||
Print a description of the specified JavaScript object (JSObject *).
|
||||
See also: pjsv, pjss, pjsid, pjsofull
|
||||
end
|
||||
|
||||
define pjss
|
||||
call (char *)JSStringToStrSafeDbg($arg0)
|
||||
end
|
||||
document pjss
|
||||
pjss <value>
|
||||
Oolite
|
||||
Print a description of the specified JavaScript string (JSString *).
|
||||
See also: pjsv, pjso, pjsid, pjssfull
|
||||
end
|
||||
|
||||
define pjsvfull
|
||||
call (char *)JSValueToStrDbg($arg0)
|
||||
end
|
||||
document pjsvfull
|
||||
pjsvfull <value>
|
||||
Oolite
|
||||
Print a description of the specified JavaScript value (jsval), even if this
|
||||
involves calling into SpiderMonkey and possibly invoking JS toString() methods.
|
||||
See also: pjsofull, pjssfull, pjsv
|
||||
end
|
||||
|
||||
define pjso
|
||||
call (char *)JSObjectToStrSafeDbg($arg0)
|
||||
end
|
||||
document pjsofull
|
||||
pjsofull <value>
|
||||
Oolite
|
||||
Print a description of the specified JavaScript object (JSObject *), even if
|
||||
this involves calling into SpiderMonkey and possibly invoking JS toString()
|
||||
methods.
|
||||
See also: pjsvfull, pjssfull, pjso
|
||||
end
|
||||
|
||||
define pjss
|
||||
call (char *)JSStringToStrSafeDbg($arg0)
|
||||
end
|
||||
document pjssfull
|
||||
pjssfull <value>
|
||||
Oolite
|
||||
Print a description of the specified JavaScript string (JSString *), even if
|
||||
this involves calling into SpiderMonkey and possibly invoking JS toString()
|
||||
methods.
|
||||
See also: pjsvfull, pjsofull, pjss
|
||||
end
|
||||
|
||||
define pjsid
|
||||
call (char *)JSIDToStrSafeDbg($arg0)
|
||||
end
|
||||
document
|
||||
pjsid <value>
|
||||
Oolite
|
||||
Print a description of the specified JavaScript identifier (jsid).
|
||||
See also: pjsv, pjso, pjss
|
||||
end
|
||||
|
||||
|
||||
define jsstack
|
||||
call OOJSDumpStack(context)
|
||||
end
|
||||
document jsstack
|
||||
jsstack
|
||||
Oolite
|
||||
Dump the current JavaScript call stack to the log.
|
||||
end
|
||||
Loading…
Reference in New Issue