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Diffstat (limited to 'tools/node_modules/expresso/deps/jscoverage/js/jsscript.h')
| -rw-r--r-- | tools/node_modules/expresso/deps/jscoverage/js/jsscript.h | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/tools/node_modules/expresso/deps/jscoverage/js/jsscript.h b/tools/node_modules/expresso/deps/jscoverage/js/jsscript.h new file mode 100644 index 0000000..00f7ca7 --- /dev/null +++ b/tools/node_modules/expresso/deps/jscoverage/js/jsscript.h @@ -0,0 +1,330 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * vim: set ts=8 sw=4 et tw=79 ft=cpp: + * + * ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla Communicator client code, released + * March 31, 1998. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#ifndef jsscript_h___ +#define jsscript_h___ +/* + * JS script descriptor. + */ +#include "jsatom.h" +#include "jsprvtd.h" + +JS_BEGIN_EXTERN_C + +/* + * Type of try note associated with each catch or finally block, and also with + * for-in loops. + */ +typedef enum JSTryNoteKind { + JSTRY_CATCH, + JSTRY_FINALLY, + JSTRY_ITER +} JSTryNoteKind; + +/* + * Exception handling record. + */ +struct JSTryNote { + uint8 kind; /* one of JSTryNoteKind */ + uint8 padding; /* explicit padding on uint16 boundary */ + uint16 stackDepth; /* stack depth upon exception handler entry */ + uint32 start; /* start of the try statement or for-in loop + relative to script->main */ + uint32 length; /* length of the try statement or for-in loop */ +}; + +typedef struct JSTryNoteArray { + JSTryNote *vector; /* array of indexed try notes */ + uint32 length; /* count of indexed try notes */ +} JSTryNoteArray; + +typedef struct JSObjectArray { + JSObject **vector; /* array of indexed objects */ + uint32 length; /* count of indexed objects */ +} JSObjectArray; + +typedef struct JSUpvarArray { + uint32 *vector; /* array of indexed upvar cookies */ + uint32 length; /* count of indexed upvar cookies */ +} JSUpvarArray; + +#define MAKE_UPVAR_COOKIE(skip,slot) ((skip) << 16 | (slot)) +#define UPVAR_FRAME_SKIP(cookie) ((uint32)(cookie) >> 16) +#define UPVAR_FRAME_SLOT(cookie) ((uint16)(cookie)) + +#define JS_OBJECT_ARRAY_SIZE(length) \ + (offsetof(JSObjectArray, vector) + sizeof(JSObject *) * (length)) + +#if defined DEBUG && defined JS_THREADSAFE +# define CHECK_SCRIPT_OWNER 1 +#endif + +struct JSScript { + jsbytecode *code; /* bytecodes and their immediate operands */ + uint32 length; /* length of code vector */ + uint16 version; /* JS version under which script was compiled */ + uint16 nfixed; /* number of slots besides stack operands in + slot array */ + uint8 objectsOffset; /* offset to the array of nested function, + block, scope, xml and one-time regexps + objects or 0 if none */ + uint8 upvarsOffset; /* offset of the array of display ("up") + closure vars or 0 if none */ + uint8 regexpsOffset; /* offset to the array of to-be-cloned + regexps or 0 if none. */ + uint8 trynotesOffset; /* offset to the array of try notes or + 0 if none */ + uint8 flags; /* see below */ + jsbytecode *main; /* main entry point, after predef'ing prolog */ + JSAtomMap atomMap; /* maps immediate index to literal struct */ + const char *filename; /* source filename or null */ + uint32 lineno; /* base line number of script */ + uint16 nslots; /* vars plus maximum stack depth */ + uint16 staticDepth;/* static depth for display maintenance */ + JSPrincipals *principals;/* principals for this script */ + union { + JSObject *object; /* optional Script-class object wrapper */ + JSScript *nextToGC; /* next to GC in rt->scriptsToGC list */ + } u; +#ifdef CHECK_SCRIPT_OWNER + JSThread *owner; /* for thread-safe life-cycle assertions */ +#endif +}; + +#define JSSF_NO_SCRIPT_RVAL 0x01 /* no need for result value of last + expression statement */ + +static JS_INLINE uintN +StackDepth(JSScript *script) +{ + return script->nslots - script->nfixed; +} + +/* No need to store script->notes now that it is allocated right after code. */ +#define SCRIPT_NOTES(script) ((jssrcnote*)((script)->code+(script)->length)) + +#define JS_SCRIPT_OBJECTS(script) \ + (JS_ASSERT((script)->objectsOffset != 0), \ + (JSObjectArray *)((uint8 *)(script) + (script)->objectsOffset)) + +#define JS_SCRIPT_UPVARS(script) \ + (JS_ASSERT((script)->upvarsOffset != 0), \ + (JSUpvarArray *)((uint8 *)(script) + (script)->upvarsOffset)) + +#define JS_SCRIPT_REGEXPS(script) \ + (JS_ASSERT((script)->regexpsOffset != 0), \ + (JSObjectArray *)((uint8 *)(script) + (script)->regexpsOffset)) + +#define JS_SCRIPT_TRYNOTES(script) \ + (JS_ASSERT((script)->trynotesOffset != 0), \ + (JSTryNoteArray *)((uint8 *)(script) + (script)->trynotesOffset)) + +#define JS_GET_SCRIPT_ATOM(script_, index, atom) \ + JS_BEGIN_MACRO \ + if (cx->fp && cx->fp->imacpc && cx->fp->script == script_) { \ + JS_ASSERT((size_t)(index) < js_common_atom_count); \ + (atom) = COMMON_ATOMS_START(&cx->runtime->atomState)[index]; \ + } else { \ + JSAtomMap *atoms_ = &(script_)->atomMap; \ + JS_ASSERT((uint32)(index) < atoms_->length); \ + (atom) = atoms_->vector[index]; \ + } \ + JS_END_MACRO + +#define JS_GET_SCRIPT_OBJECT(script, index, obj) \ + JS_BEGIN_MACRO \ + JSObjectArray *objects_ = JS_SCRIPT_OBJECTS(script); \ + JS_ASSERT((uint32)(index) < objects_->length); \ + (obj) = objects_->vector[index]; \ + JS_END_MACRO + +#define JS_GET_SCRIPT_FUNCTION(script, index, fun) \ + JS_BEGIN_MACRO \ + JSObject *funobj_; \ + \ + JS_GET_SCRIPT_OBJECT(script, index, funobj_); \ + JS_ASSERT(HAS_FUNCTION_CLASS(funobj_)); \ + JS_ASSERT(funobj_ == (JSObject *) STOBJ_GET_PRIVATE(funobj_)); \ + (fun) = (JSFunction *) funobj_; \ + JS_ASSERT(FUN_INTERPRETED(fun)); \ + JS_END_MACRO + +#define JS_GET_SCRIPT_REGEXP(script, index, obj) \ + JS_BEGIN_MACRO \ + JSObjectArray *regexps_ = JS_SCRIPT_REGEXPS(script); \ + JS_ASSERT((uint32)(index) < regexps_->length); \ + (obj) = regexps_->vector[index]; \ + JS_ASSERT(STOBJ_GET_CLASS(obj) == &js_RegExpClass); \ + JS_END_MACRO + +/* + * Check if pc is inside a try block that has finally code. GC calls this to + * check if it is necessary to schedule generator.close() invocation for an + * unreachable generator. + */ +JSBool +js_IsInsideTryWithFinally(JSScript *script, jsbytecode *pc); + +extern JS_FRIEND_DATA(JSClass) js_ScriptClass; + +extern JSObject * +js_InitScriptClass(JSContext *cx, JSObject *obj); + +/* + * On first new context in rt, initialize script runtime state, specifically + * the script filename table and its lock. + */ +extern JSBool +js_InitRuntimeScriptState(JSRuntime *rt); + +/* + * On last context destroy for rt, if script filenames are all GC'd, free the + * script filename table and its lock. + */ +extern void +js_FinishRuntimeScriptState(JSRuntime *rt); + +/* + * On JS_DestroyRuntime(rt), forcibly free script filename prefixes and any + * script filename table entries that have not been GC'd, the latter using + * js_FinishRuntimeScriptState. + * + * This allows script filename prefixes to outlive any context in rt. + */ +extern void +js_FreeRuntimeScriptState(JSRuntime *rt); + +extern const char * +js_SaveScriptFilename(JSContext *cx, const char *filename); + +extern const char * +js_SaveScriptFilenameRT(JSRuntime *rt, const char *filename, uint32 flags); + +extern uint32 +js_GetScriptFilenameFlags(const char *filename); + +extern void +js_MarkScriptFilename(const char *filename); + +extern void +js_MarkScriptFilenames(JSRuntime *rt, JSBool keepAtoms); + +extern void +js_SweepScriptFilenames(JSRuntime *rt); + +/* + * Two successively less primitive ways to make a new JSScript. The first + * does *not* call a non-null cx->runtime->newScriptHook -- only the second, + * js_NewScriptFromCG, calls this optional debugger hook. + * + * The js_NewScript function can't know whether the script it creates belongs + * to a function, or is top-level or eval code, but the debugger wants access + * to the newly made script's function, if any -- so callers of js_NewScript + * are responsible for notifying the debugger after successfully creating any + * kind (function or other) of new JSScript. + */ +extern JSScript * +js_NewScript(JSContext *cx, uint32 length, uint32 nsrcnotes, uint32 natoms, + uint32 nobjects, uint32 nupvars, uint32 nregexps, + uint32 ntrynotes); + +extern JSScript * +js_NewScriptFromCG(JSContext *cx, JSCodeGenerator *cg); + +/* + * New-script-hook calling is factored from js_NewScriptFromCG so that it + * and callers of js_XDRScript can share this code. In the case of callers + * of js_XDRScript, the hook should be invoked only after successful decode + * of any owning function (the fun parameter) or script object (null fun). + */ +extern JS_FRIEND_API(void) +js_CallNewScriptHook(JSContext *cx, JSScript *script, JSFunction *fun); + +extern JS_FRIEND_API(void) +js_CallDestroyScriptHook(JSContext *cx, JSScript *script); + +extern void +js_DestroyScript(JSContext *cx, JSScript *script); + +extern void +js_TraceScript(JSTracer *trc, JSScript *script); + +/* + * To perturb as little code as possible, we introduce a js_GetSrcNote lookup + * cache without adding an explicit cx parameter. Thus js_GetSrcNote becomes + * a macro that uses cx from its calls' lexical environments. + */ +#define js_GetSrcNote(script,pc) js_GetSrcNoteCached(cx, script, pc) + +extern jssrcnote * +js_GetSrcNoteCached(JSContext *cx, JSScript *script, jsbytecode *pc); + +/* + * NOTE: use js_FramePCToLineNumber(cx, fp) when you have an active fp, in + * preference to js_PCToLineNumber (cx, fp->script fp->regs->pc), because + * fp->imacpc may be non-null, indicating an active imacro. + */ +extern uintN +js_FramePCToLineNumber(JSContext *cx, JSStackFrame *fp); + +extern uintN +js_PCToLineNumber(JSContext *cx, JSScript *script, jsbytecode *pc); + +extern jsbytecode * +js_LineNumberToPC(JSScript *script, uintN lineno); + +extern JS_FRIEND_API(uintN) +js_GetScriptLineExtent(JSScript *script); + +/* + * If magic is non-null, js_XDRScript succeeds on magic number mismatch but + * returns false in *magic; it reflects a match via a true *magic out param. + * If magic is null, js_XDRScript returns false on bad magic number errors, + * which it reports. + * + * NB: callers must call js_CallNewScriptHook after successful JSXDR_DECODE + * and subsequent set-up of owning function or script object, if any. + */ +extern JSBool +js_XDRScript(JSXDRState *xdr, JSScript **scriptp, JSBool *magic); + +JS_END_EXTERN_C + +#endif /* jsscript_h___ */ |