dumper.py 29.2 KB
Newer Older
hjk's avatar
hjk committed
1 2 3 4 5 6 7 8

#Note: Keep name-type-value-numchild-extra order

#return

import sys
import traceback
import gdb
9
import base64
hjk's avatar
hjk committed
10 11
import curses.ascii

12 13 14 15
# only needed for gdb 7.0
import os
import tempfile

hjk's avatar
hjk committed
16 17 18
verbosity = 0
verbosity = 1

19 20 21 22 23
def select(condition, if_expr, else_expr):
    if condition:
        return if_expr
    return else_expr

24 25 26 27 28
def qmin(n, m):
    if n < m:
        return n
    return m

hjk's avatar
hjk committed
29
def isGoodGdb():
30 31 32
    #return gdb.VERSION.startswith("6.8.50.2009") \
    #   and gdb.VERSION != "6.8.50.20090630-cvs"
    return 'parse_and_eval' in dir(gdb)
hjk's avatar
hjk committed
33

34
def parseAndEvaluate(exp):
hjk's avatar
hjk committed
35
    if isGoodGdb():
36 37 38 39 40 41 42 43 44 45 46 47 48
        return gdb.parse_and_eval(exp)
    # Work around non-existing gdb.parse_and_eval as in released 7.0
    gdb.execute("set logging redirect on")
    gdb.execute("set logging on")
    gdb.execute("print %s" % exp)
    gdb.execute("set logging off")
    return gdb.history(0)

def listOfLocals():
    try:
        frame = gdb.selected_frame()
        #warn("FRAME %s: " % frame)
    except RuntimeError:
hjk's avatar
hjk committed
49
        return []
50 51

    items = []
hjk's avatar
hjk committed
52
    if isGoodGdb():
53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84
        # archer-tromey-python
        block = frame.block()
        while True:
            if block is None:
                warn("UNEXPECTED 'None' BLOCK")
                break
            for symbol in block:
                name = symbol.print_name
                
                if name == "__in_chrg":
                    continue

                # "NotImplementedError: Symbol type not yet supported in
                # Python scripts."
                #warn("SYMBOL %s: " % symbol.value)
                #warn("SYMBOL %s  (%s): " % (symbol, name))
                item = Item(0, "local", name, name)
                try:
                    item.value = frame.read_var(name)  # this is a gdb value
                except RuntimeError:
                    # happens for  void foo() { std::string s; std::wstring w; }
                    #warn("  FRAME READ VAR ERROR: %s (%s): " % (symbol, name))
                    continue
                #warn("ITEM %s: " % item.value)
                items.append(item)
            # The outermost block in a function has the function member
            # FIXME: check whether this is guaranteed.
            if not block.function is None:
                break

            block = block.superblock
    else:
hjk's avatar
hjk committed
85
        # Assuming gdb 7.0 release or 6.8-symbianelf.
86 87
        file = tempfile.mkstemp(prefix="gdbpy_")
        filename = file[1]
hjk's avatar
hjk committed
88 89
        gdb.execute("set logging off")
        gdb.execute("set logging redirect off")
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116
        gdb.execute("set logging file %s" % filename)
        gdb.execute("set logging redirect on")
        gdb.execute("set logging on")
        gdb.execute("info locals")
        gdb.execute("info args")
        gdb.execute("set logging off")
        gdb.execute("set logging redirect off")
        file = open(filename, "r")
        for line in file:
            if len(line) == 0 or line.startswith(" "):
                continue
            pos = line.find(" = ")
            if pos < 0:
                continue
            name = line[0:pos]
            item = Item(0, "local", name, name)
            try:
                item.value = frame.read_var(name)  # this is a gdb value
            except RuntimeError:
                continue
            items.append(item)
        file.close()
        os.remove(filename)

    return items


117
def value(expr):
118
    value = parseAndEvaluate(expr)
119 120 121 122 123
    try:
        return int(value)
    except:
        return str(value)

124

hjk's avatar
hjk committed
125 126 127 128 129 130 131 132 133
def isSimpleType(typeobj):
    type = str(typeobj)
    return type == "bool" \
        or type == "char" \
        or type == "double" \
        or type == "float" \
        or type == "int" \
        or type == "long" or type.startswith("long ") \
        or type == "short" or type.startswith("short ") \
134
        or type == "signed" or type.startswith("signed ") \
hjk's avatar
hjk committed
135 136
        or type == "unsigned" or type.startswith("unsigned ")

137

hjk's avatar
hjk committed
138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154
def isStringType(d, typeobj):
    type = str(typeobj)
    return type == d.ns + "QString" \
        or type == d.ns + "QByteArray" \
        or type == "std::string" \
        or type == "std::wstring" \
        or type == "wstring"

def warn(message):
    if verbosity > 0:
        print "XXX: %s " % message.encode("latin1")
    pass

def check(exp):
    if not exp:
        raise RuntimeError("Check failed")

155 156 157 158 159
def checkRef(ref):
    count = ref["_q_value"]
    check(count > 0)
    check(count < 1000000) # assume there aren't a million references to any object

hjk's avatar
hjk committed
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
#def couldBePointer(p, align):
#    type = gdb.lookup_type("unsigned int")
#    ptr = gdb.Value(p).cast(type)
#    d = int(str(ptr))
#    warn("CHECKING : %s %d " % (p, ((d & 3) == 0 and (d > 1000 or d == 0))))
#    return (d & (align - 1)) and (d > 1000 or d == 0)


def checkAccess(p, align = 1):
    return p.dereference()

def checkContents(p, expected, align = 1):
    if int(p.dereference()) != expected:
        raise RuntimeError("Contents check failed")

def checkPointer(p, align = 1):
    if not isNull(p):
        p.dereference()


def isNull(p):
181 182 183 184 185
    # The following can cause evaluation to abort with "UnicodeEncodeError"
    # for invalid char *, as their "contents" is being examined
    #s = str(p)
    #return s == "0x0" or s.startswith("0x0 ")
    return p.cast(gdb.lookup_type("unsigned long long")) == 0
hjk's avatar
hjk committed
186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211

movableTypes = set([
    "QBrush", "QBitArray", "QByteArray",
    "QCustomTypeInfo", "QChar",
    "QDate", "QDateTime",
    "QFileInfo", "QFixed", "QFixedPoint", "QFixedSize",
    "QHashDummyValue",
    "QIcon", "QImage",
    "QLine", "QLineF", "QLatin1Char", "QLocal",
    "QMatrix", "QModelIndex",
    "QPoint", "QPointF", "QPen", "QPersistentModelIndex",
    "QResourceRoot", "QRect", "QRectF", "QRegExp",
    "QSize", "QSizeF", "QString",
    "QTime", "QTextBlock",
    "QUrl",
    "QVariant",
    "QXmlStreamAttribute", "QXmlStreamNamespaceDeclaration",
    "QXmlStreamNotationDeclaration", "QXmlStreamEntityDeclaration"])


def stripClassTag(type):
    if type.startswith("class "):
        return type[6:]
    return type

def checkPointerRange(p, n):
212
    for i in xrange(n):
hjk's avatar
hjk committed
213 214 215 216 217 218
        checkPointer(p)
        ++p

def call(value, func):
    #warn("CALL: %s -> %s" % (value, func))
    type = stripClassTag(str(value.type))
219
    if type.find(":") >= 0:
hjk's avatar
hjk committed
220 221 222
        type = "'" + type + "'"
    exp = "((%s*)%s)->%s" % (type, value.address, func)
    #warn("CALL: %s" % exp)
223
    result = parseAndEvaluate(exp)
hjk's avatar
hjk committed
224 225 226
    #warn("  -> %s" % result)
    return result

227 228
def qtNamespace():
    try:
229
        type = str(parseAndEvaluate("&QString::null").type.target().unqualified())
230 231 232
        return type[0:len(type) - len("QString::null")]
    except RuntimeError:
        return ""
hjk's avatar
hjk committed
233

234 235
def encodeCharArray(p, size):
    s = ""
236
    for i in xrange(size):
237 238 239 240
        s += "%02x" % int(p.dereference())
        p += 1
    return s

241 242 243 244 245 246
def encodeByteArray(value):
    d_ptr = value['d'].dereference()
    data = d_ptr['data']
    size = d_ptr['size']
    alloc = d_ptr['alloc']
    check(0 <= size and size <= alloc and alloc <= 100*1000*1000)
247
    checkRef(d_ptr["ref"])
248 249 250 251 252 253
    if size > 0:
        checkAccess(data, 4)
        checkAccess(data + size) == 0

    innerType = gdb.lookup_type("char")
    p = gdb.Value(data.cast(innerType.pointer()))
254
    return encodeCharArray(p, size)
255 256 257 258 259 260 261 262 263 264

def encodeString(value):
    d_ptr = value['d'].dereference()
    data = d_ptr['data']
    size = d_ptr['size']
    alloc = d_ptr['alloc']
    check(0 <= size and size <= alloc and alloc <= 100*1000*1000)
    if size > 0:
        checkAccess(data, 4)
        checkAccess(data + size * 2) == 0
265
    checkRef(d_ptr["ref"])
266 267
    p = gdb.Value(d_ptr["data"])
    s = ""
268
    for i in xrange(size):
269 270 271 272 273 274
        val = int(p.dereference())
        s += "%02x" % (val % 256)
        s += "%02x" % (val / 256)
        p += 1
    return s

hjk's avatar
hjk committed
275 276 277 278 279 280 281
#######################################################################
#
# Item
#
#######################################################################

class Item:
282
    def __init__(self, value, parentiname, iname, name = None):
hjk's avatar
hjk committed
283
        self.value = value
284 285 286 287
        if iname is None:
            self.iname = parentiname
        else:
            self.iname = "%s.%s" % (parentiname, iname)
hjk's avatar
hjk committed
288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306
        self.name = name


#######################################################################
#
# FrameCommand
#
#######################################################################

class FrameCommand(gdb.Command):
    """Do fancy stuff. Usage bb --verbose expandedINames"""

    def __init__(self):
        super(FrameCommand, self).__init__("bb", gdb.COMMAND_OBSCURE)

    def invoke(self, arg, from_tty):
        args = arg.split(' ')
        #warn("ARG: %s" % arg)
        #warn("ARGS: %s" % args)
307 308
        options = args[0].split(",")
        useFancy = "fancy" in options
hjk's avatar
hjk committed
309
        expandedINames = set()
310 311
        if len(args) > 1:
            expandedINames = set(args[1].split(","))
hjk's avatar
hjk committed
312 313 314 315
        #warn("EXPANDED INAMES: %s" % expandedINames)
        module = sys.modules[__name__]
        self.dumpers = {}

hjk's avatar
hjk committed
316 317 318
        if useFancy == -1:
            output = "dumpers=["
            for key, value in module.__dict__.items():
319
                if key.startswith("qdump__"):
hjk's avatar
hjk committed
320 321
                    if output != "dumpers=[":
                        output += ","
322
                    output += '"' + key[7:] + '"'
hjk's avatar
hjk committed
323 324 325 326 327 328 329 330 331 332 333
            output += "],"
            #output += "qtversion=[%d,%d,%d]"
            output += "qtversion=[4,6,0],"
            output += "namespace=\"%s\"," % qtNamespace()
            output += "dumperversion=\"2.0\","
            output += "sizes=[],"
            output += "expressions=[]"
            output += "]"
            print output
            return
  
334

hjk's avatar
hjk committed
335 336 337
        if useFancy:
            for key, value in module.__dict__.items():
                #if callable(value):
338 339
                if key.startswith("qdump__"):
                    self.dumpers[key[7:]] = value
hjk's avatar
hjk committed
340 341 342

        d = Dumper()
        d.dumpers = self.dumpers
343 344 345
        d.useFancy = useFancy
        d.passExceptions = "passexceptions" in options
        d.autoDerefPointers = "autoderef" in options
346
        d.ns = qtNamespace()
347
        d.expandedINames = expandedINames
hjk's avatar
hjk committed
348 349
        #warn(" NAMESPACE IS: '%s'" % d.ns)

350 351 352
        #
        # Locals
        #
353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372
        for item in listOfLocals():
            #warn("ITEM %s: " % item.value)

            type = item.value.type
            if type.code == gdb.TYPE_CODE_PTR \
                    and item.name == "argv" and str(type) == "char **":
                # Special handling for char** argv:
                n = 0
                p = item.value
                while not isNull(p.dereference()) and n <= 100:
                    p += 1
                    n += 1

                d.beginHash()
                d.put('iname="%s",' % item.iname)
                d.putName(item.name)
                d.putItemCount(select(n <= 100, n, "> 100"))
                d.putType(type)
                d.putNumChild(n)
                if d.isExpanded(item):
373
                    p = item.value
374
                    d.beginChildren(n)
375
                    for i in xrange(n):
376 377
                        value = p.dereference()
                        d.putItem(Item(value, item.iname, i, None))
378
                        p += 1
379 380 381 382 383 384 385 386 387 388 389 390
                    if n > 100:
                        d.putEllipsis()
                    d.endChildren()
                d.endHash()

            else:
                # A "normal" local variable or parameter
                d.beginHash()
                d.put('iname="%s",' % item.iname)
                d.put('addr="%s",' % item.value.address)
                d.safePutItemHelper(item)
                d.endHash()
hjk's avatar
hjk committed
391

392 393 394 395
        d.pushOutput()
        locals = d.safeoutput


396 397 398
        #
        # Watchers
        #
399 400
        d.safeoutput = ""
        watchers = ""
401 402
        if len(args) > 2:
            watchers = base64.b16decode(args[2], True)
403
        if len(watchers) > 0:
404 405
            for watcher in watchers.split("##"):
                (exp, name) = watcher.split("#")
406
                self.handleWatch(d, exp, name)
407 408 409 410
        d.pushOutput()
        watchers = d.safeoutput

        print('locals={iname="local",name="Locals",value=" ",type=" ",'
411 412 413 414
            + 'children=[' + locals + ']},'
            + 'watchers={iname="watch",name="Watchers",value=" ",type=" ",'
            + 'children=[' + watchers + ']}\n')

415 416

    def handleWatch(self, d, exp, name):
417
        #warn("HANDLING WATCH %s, NAME: %s" % (exp, name))
418 419 420 421 422 423 424 425 426 427
        if not isGoodGdb():
            d.beginHash()
            d.put('iname="watch.%s",' % name)
            d.put('name="%s",' % exp)
            d.put('exp="%s",' % exp)
            d.put('value="<unsupported gdb version>"',)
            d.put('type="<unknown>",numchild="0"')
            d.endHash()
            return

428
        if exp.startswith("["):
429
            #warn("EVAL: EXP: %s" % exp)
430 431 432
            d.beginHash()
            d.put('iname="watch.%s",' % name)
            d.put('name="%s",' % exp)
433
            d.put('exp="%s",' % exp)
434 435
            try:
                list = eval(exp)
436
                #warn("EVAL: LIST: %s" % list)
437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459
                d.put('value=" "')
                d.put('type=" "')
                d.put('numchild="%d"' % len(list))
                # This is a list of expressions to evaluate
                d.beginChildren(len(list))
                itemNumber = 0
                for item in list:
                    self.handleWatch(d, item, "%s.%d" % (name, itemNumber))
                    itemNumber += 1
                d.endChildren()
            except:
                warn("EVAL: ERROR CAUGHT")
                d.put('value="<syntax error>"')
                d.put('type=" "')
                d.put('numchild="0"')
                d.beginChildren(0)
                d.endChildren()
            d.endHash()
            return

        d.beginHash()
        d.put('iname="watch.%s",' % name)
        d.put('name="%s",' % exp)
460
        d.put('exp="%s",' % exp)
461 462 463 464 465
        handled = False
        if exp == "<Edit>":
            d.put(',value=" ",')
            d.put('type=" ",numchild="0"')
        else:
466
            try:
467
                value = parseAndEvaluate(exp)
468
                item = Item(value, "watch.%s" % name, None, None)
469
                d.putItemHelper(item)
470
            except RuntimeError:
471 472 473
                d.put(',value="<invalid>",')
                d.put('type="<unknown>",numchild="0"')
        d.endHash()
474

hjk's avatar
hjk committed
475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491

FrameCommand()



#######################################################################
#
# The Dumper Class
#
#######################################################################

class Dumper:
    def __init__(self):
        self.output = ""
        self.safeoutput = ""
        self.childTypes = [""]
        self.childNumChilds = [-1]
492 493
        self.maxNumChilds = [-1]
        self.numChilds = [-1]
hjk's avatar
hjk committed
494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523

    def put(self, value):
        self.output += value

    def putCommaIfNeeded(self):
        c = self.output[-1:]
        if c == '}' or c == '"' or c == ']' or c == '\n':
            self.put(',')
        #warn("C:'%s' COND:'%d' OUT:'%s'" %
        #    (c, c == '}' or c == '"' or c == ']' or c == '\n', self.output))

    def putField(self, name, value):
        self.putCommaIfNeeded()
        self.put('%s="%s"' % (name, value))

    def beginHash(self):
        self.putCommaIfNeeded()
        self.put('{')

    def endHash(self):
        self.put('}')

    def beginItem(self, name):
        self.putCommaIfNeeded()
        self.put(name)
        self.put('="')

    def endItem(self):
        self.put('"')

524
    def beginChildren(self, numChild_ = 1, childType_ = None, childNumChild_ = None):
hjk's avatar
hjk committed
525 526
        childType = ""
        childNumChild = -1
527 528 529 530 531 532
        if type(numChild_) is list:
            numChild = numChild_[0]
            maxNumChild = numChild_[1]
        else:
            numChild = numChild_
            maxNumChild = numChild_
533
        if numChild == 0:
534
            childType_ = None
535
        self.putCommaIfNeeded()
536 537
        if not childType_ is None:
            childType = stripClassTag(str(childType_))
538
            self.put('childtype="%s",' % childType)
539
            if isSimpleType(childType_) or isStringType(self, childType_):
540
                self.put('childnumchild="0",')
hjk's avatar
hjk committed
541
                childNumChild = 0
542
            elif childType_.code == gdb.TYPE_CODE_PTR:
543
                self.put('childnumchild="1",')
hjk's avatar
hjk committed
544
                childNumChild = 1
545 546 547
        if not childNumChild_ is None:
            self.put('childnumchild="%s",' % childNumChild_)
            childNumChild = childNumChild_
hjk's avatar
hjk committed
548 549
        self.childTypes.append(childType)
        self.childNumChilds.append(childNumChild)
550 551
        self.numChilds.append(numChild)
        self.maxNumChilds.append(maxNumChild)
hjk's avatar
hjk committed
552 553 554 555 556
        #warn("BEGIN: %s" % self.childTypes)
        self.put("children=[")

    def endChildren(self):
        #warn("END: %s" % self.childTypes)
557 558 559 560
        numChild = self.numChilds.pop()
        maxNumChild = self.maxNumChilds.pop()
        if maxNumChild < numChild:
            self.putEllipsis();
hjk's avatar
hjk committed
561 562 563 564
        self.childTypes.pop()
        self.childNumChilds.pop()
        self.put(']')

565 566 567
    def childRange(self):
        return xrange(qmin(self.maxNumChilds[-1], self.numChilds[-1]))

hjk's avatar
hjk committed
568 569 570 571 572 573 574 575 576 577 578 579 580 581
    # convenience
    def putItemCount(self, count):
        self.putCommaIfNeeded()
        self.put('value="<%s items>"' % count)

    def putEllipsis(self):
        self.putCommaIfNeeded()
        self.put('{name="<incomplete>",value="",type="",numchild="0"}')

    def putType(self, type):
        #warn("TYPES: '%s' '%s'" % (type, self.childTypes))
        #warn("  EQUAL 2: %s " % (str(type) == self.childTypes[-1]))
        type = stripClassTag(str(type))
        if len(type) > 0 and type != self.childTypes[-1]:
582 583
            self.putCommaIfNeeded()
            self.put('type="%s"' % type) # str(type.unqualified()) ?
hjk's avatar
hjk committed
584 585 586

    def putNumChild(self, numchild):
        #warn("NUM CHILD: '%s' '%s'" % (numchild, self.childNumChilds[-1]))
587 588
        if numchild != self.childNumChilds[-1]:
            self.put(',numchild="%s"' % numchild)
hjk's avatar
hjk committed
589

590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608
    def putValue(self, value, encoding = None):
        if not encoding is None:
            self.putField("valueencoded", encoding)
        self.putField("value", value)

    def putStringValue(self, value):
        str = encodeString(value)
        self.putCommaIfNeeded()
        self.put('valueencoded="%d",value="%s"' % (7, str))

    def putByteArrayValue(self, value):
        str = encodeByteArray(value)
        self.putCommaIfNeeded()
        self.put('valueencoded="%d",value="%s"' % (6, str))
    
    def putName(self, name):
        self.putCommaIfNeeded()
        self.put('name="%s"' % name)

hjk's avatar
hjk committed
609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626
    def isExpanded(self, item):
        #warn("IS EXPANDED: %s in %s" % (item.iname, self.expandedINames))
        if item.iname is None:
            raise "Illegal iname 'None'"
        if item.iname.startswith("None"):
            raise "Illegal iname '%s'" % item.iname
        #warn("   --> %s" % (item.iname in self.expandedINames))
        return item.iname in self.expandedINames

    def isExpandedIName(self, iname):
        return iname in self.expandedINames

    def unputField(self, name):
        pos = self.output.rfind(",")
        if self.output[pos + 1:].startswith(name):
            self.output = self.output[0:pos]

    def stripNamespaceFromType(self, typeobj):
627 628 629 630 631
        # This breaks for dumpers type names containing '__star'.
        # But this should not happen as identifiers containing two
        # subsequent underscores are reserved for the implemention.
        if typeobj.code == gdb.TYPE_CODE_PTR:
            return self.stripNamespaceFromType(typeobj.target()) + "__star"
hjk's avatar
hjk committed
632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649
        # FIXME: pass ns from plugin
        type = stripClassTag(str(typeobj))
        if len(self.ns) > 0 and type.startswith(self.ns):
            type = type[len(self.ns):]
        pos = type.find("<")
        if pos != -1:
            type = type[0:pos]
        return type

    def isMovableType(self, type):
        if type.code == gdb.TYPE_CODE_PTR:
            return True
        if isSimpleType(type):
            return True
        return self.stripNamespaceFromType(type) in movableTypes

    def putIntItem(self, name, value):
        self.beginHash()
650 651
        self.putName(name)
        self.putValue(value)
hjk's avatar
hjk committed
652 653 654 655 656 657
        self.putType("int")
        self.putNumChild(0)
        self.endHash()

    def putBoolItem(self, name, value):
        self.beginHash()
658 659
        self.putName(name)
        self.putValue(value)
hjk's avatar
hjk committed
660 661 662 663 664 665 666 667 668
        self.putType("bool")
        self.putNumChild(0)
        self.endHash()

    def pushOutput(self):
        #warn("PUSH OUTPUT: %s " % self.output)
        self.safeoutput += self.output
        self.output = ""

669
    def dumpInnerValueHelper(self, item):
hjk's avatar
hjk committed
670
        if isSimpleType(item.value.type):
671
            self.safePutItemHelper(item)
hjk's avatar
hjk committed
672

673 674 675 676 677
    def safePutItem(self, item):
        self.beginHash()
        self.safePutItemHelper(item)
        self.endHash()

hjk's avatar
hjk committed
678 679 680 681 682 683 684 685 686 687 688 689
    def safePutItemHelper(self, item):
        self.pushOutput()
        # This is only used at the top level to ensure continuation
        # after failures due to uninitialized or corrupted data.
        if self.passExceptions:
            # for debugging reasons propagate errors.
            self.putItemHelper(item)

        else:
            try:
                self.putItemHelper(item)

690
            except RuntimeError:
hjk's avatar
hjk committed
691 692 693 694
                self.output = ""
                # FIXME: Only catch debugger related exceptions
                #exType, exValue, exTraceback = sys.exc_info()
                #tb = traceback.format_exception(exType, exValue, exTraceback)
695
                #warn("Exception: %s" % ex.message)
hjk's avatar
hjk committed
696 697 698 699 700
                # DeprecationWarning: BaseException.message
                # has been deprecated
                #warn("Exception.")
                #for line in tb:
                #    warn("%s" % line)
701 702 703 704
                self.putName(item.name)
                self.putValue("<invalid>")
                self.putType(str(item.value.type))
                self.putNumChild(0)
hjk's avatar
hjk committed
705 706 707 708 709 710 711
                #if self.isExpanded(item):
                self.beginChildren()
                self.endChildren()
        self.pushOutput()

    def putItem(self, item):
        self.beginHash()
hjk's avatar
hjk committed
712
        self.safePutItemHelper(item)
hjk's avatar
hjk committed
713 714 715 716 717 718
        self.endHash()

    def putCallItem(self, name, item, func):
        result = call(item.value, func)
        self.putItem(Item(result, item.iname, name, name))

719
    def putItemHelper(self, item):
hjk's avatar
hjk committed
720 721
        name = getattr(item, "name", None)
        if not name is None:
722
            self.putName(name)
hjk's avatar
hjk committed
723 724 725 726

        # FIXME: Gui shows references stripped?
        #warn("REAL INAME: %s " % item.iname)
        #warn("REAL TYPE: %s " % item.value.type)
727
        #warn("REAL VALUE: %s " % item.value)
728 729 730 731
        #try:
        #    warn("REAL VALUE: %s " % item.value)
        #except UnicodeEncodeError:
        #    warn("REAL VALUE: <unprintable>")
hjk's avatar
hjk committed
732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749

        value = item.value
        type = value.type

        if type.code == gdb.TYPE_CODE_REF:
            type = type.target()
            value = value.cast(type)

        if type.code == gdb.TYPE_CODE_TYPEDEF:
            type = type.target()

        strippedType = self.stripNamespaceFromType(
            type.strip_typedefs().unqualified()).replace("::", "__")
        
        #warn(" STRIPPED: %s" % strippedType)
        #warn(" DUMPERS: %s" % self.dumpers)
        #warn(" DUMPERS: %s" % (strippedType in self.dumpers))

750
        if isSimpleType(type.unqualified()):
751 752
            #warn("IS SIMPLE: %s " % type)
            self.putType(item.value.type)
753 754
            self.putValue(value)
            self.putNumChild(0)
hjk's avatar
hjk committed
755 756

        elif strippedType in self.dumpers:
757 758
            #warn("IS DUMPABLE: %s " % type)
            self.putType(item.value.type)
hjk's avatar
hjk committed
759
            self.dumpers[strippedType](self, item)
760
            #warn(" RESULT: %s " % self.output)
hjk's avatar
hjk committed
761 762

        elif type.code == gdb.TYPE_CODE_ENUM:
763
            #warn("GENERIC ENUM: %s" % value)
764
            self.putType(item.value.type)
765
            self.putValue(value)
hjk's avatar
hjk committed
766 767 768 769
            self.putNumChild(0)
            

        elif type.code == gdb.TYPE_CODE_PTR:
770
            isHandled = False
771 772 773 774 775 776 777 778
            if self.useFancy:
                #warn("A POINTER: %s" % value.type)
                if isNull(value):
                    self.putValue("0x0")
                    self.putType(item.value.type)
                    self.putNumChild(0)
                    isHandled = True

779 780
                target = str(type.target().strip_typedefs().unqualified())
                if (not isHandled) and target == "void":
781 782 783 784 785
                    self.putType(item.value.type)
                    self.putValue(str(value))
                    self.putNumChild(0)
                    isHandled = True

786 787
                if (not isHandled) and (target == "char"
                        or target == "signed char" or target == "unsigned char"):
788
                    # Display values up to given length directly
789
                    #warn("CHAR AUTODEREF: %s" % value.address)
790 791 792
                    self.putType(item.value.type)
                    firstNul = -1
                    p = value
793
                    for i in xrange(100):
794 795 796 797 798 799 800 801
                        if p.dereference() == 0:
                            # Found terminating NUL
                            self.putValue(encodeCharArray(value, i), "6")
                            self.putNumChild(0)
                            isHandled = True
                            break
                        p += 1

802 803 804 805 806
            #warn("AUTODEREF: %s" % self.autoDerefPointers)
            #warn("IS HANDLED: %s" % isHandled)
            #warn("RES: %s" % (self.autoDerefPointers and not isHandled))
            if self.autoDerefPointers and not isHandled:
                ## Generic pointer type.
807
                #warn("GENERIC AUTODEREF POINTER: %s" % value.address)
808 809 810 811 812 813 814 815 816 817 818 819
                innerType = item.value.type.target()
                self.putType(innerType)
                self.childTypes.append(
                    stripClassTag(str(innerType)))
                self.putItemHelper(
                    Item(item.value.dereference(), item.iname, None, None))
                self.childTypes.pop()
                isHandled = True

            # Fall back to plain pointer printing
            if not isHandled:
                #warn("GENERIC PLAIN POINTER: %s" % type(value))
820 821 822 823 824 825 826 827
                self.putType(item.value.type)
                self.putValue(str(value.address))
                self.putNumChild(1)
                if self.isExpanded(item):
                    self.beginChildren()
                    self.putItem(
                          Item(item.value.dereference(), item.iname, "*", "*"))
                    self.endChildren()
hjk's avatar
hjk committed
828 829 830 831

        else:
            #warn("INAME: %s " % item.iname)
            #warn("INAMES: %s " % self.expandedINames)
832
            #warn("EXPANDED: %s " % (item.iname in self.expandedINames))
hjk's avatar
hjk committed
833 834 835 836 837

            # insufficient, see http://sourceware.org/bugzilla/show_bug.cgi?id=10953
            #fields = value.type.fields()
            fields = value.type.strip_typedefs().fields()

838
            self.putType(item.value.type)
839
            self.putValue("{...}")
hjk's avatar
hjk committed
840 841 842 843 844 845 846 847 848 849 850 851 852 853 854

            if False:
                numfields = 0
                for field in fields:
                    bitpos = getattr(field, "bitpos", None)
                    if not bitpos is None:
                        ++numfields
            else:
                numfields = len(fields)
            self.putNumChild(numfields)

            if self.isExpanded(item):
                innerType = None
                if len(fields) == 1 and fields[0].name is None:
                    innerType = value.type.target()
855
                self.beginChildren(1, innerType)
hjk's avatar
hjk committed
856

857
                baseNumber = 0
hjk's avatar
hjk committed
858 859 860 861 862 863 864 865 866 867 868
                for field in fields:
                    #warn("FIELD: %s" % field)
                    #warn("  BITSIZE: %s" % field.bitsize)
                    #warn("  ARTIFICIAL: %s" % field.artificial)
                    bitpos = getattr(field, "bitpos", None)
                    if bitpos is None: # FIXME: Is check correct?
                        continue  # A static class member(?).

                    if field.name is None:
                        innerType = value.type.target()
                        p = value.cast(innerType.pointer())
869
                        for i in xrange(value.type.sizeof / innerType.sizeof):
hjk's avatar
hjk committed
870 871 872 873 874 875 876 877 878 879 880
                            self.putItem(Item(p.dereference(), item.iname, i, None))
                            p = p + 1
                        continue

                    # ignore vtable pointers for virtual inheritance
                    if field.name.startswith("_vptr."):
                        continue

                    #warn("FIELD NAME: %s" % field.name)
                    #warn("FIELD TYPE: %s" % field.type)
                    if field.name == stripClassTag(str(field.type)):
881 882 883 884 885 886 887 888 889 890
                        # Field is base type. We cannot use field.name as part
                        # of the iname as it might contain spaces and other
                        # strange characters.
                        child = Item(value.cast(field.type),
                            item.iname, "@%d" % baseNumber, field.name)
                        baseNumber += 1
                        self.beginHash()
                        self.putField("iname", child.iname)
                        self.safePutItemHelper(child)
                        self.endHash()
hjk's avatar
hjk committed
891 892
                    else:
                        # Data member.
893 894 895 896 897 898 899
                        child = Item(value[field.name],
                            item.iname, field.name, field.name)
                        if not child.name:
                            child.name = "<anon>"
                        self.beginHash()
                        self.safePutItemHelper(child)
                        self.endHash()
hjk's avatar
hjk committed
900
                self.endChildren()