Merge pull request #142 from ethereum/decodeComplexType

Decode other types
8 years ago · d1453f8894
parent be8e28b6f1 da4cba0759
commit d1453f8894
11 changed files with 287 additions and 23 deletions
--- a/src/solidity/types/Address.js
+++ b/src/solidity/types/Address.js
@ -1,4 +1,5 @@
 'use strict'
+var util = require('./util')

 function Address () {
  this.storageSlots = 1
@ -7,7 +8,8 @@ function Address () {
 }

 Address.prototype.decodeFromStorage = function (location, storageContent) {
-  return '<not implemented yet>'
+  var value = util.extractHexValue(location, storageContent, this.storageBytes)
+  return '0x' + value.toUpperCase()
 }

 module.exports = Address
--- a/src/solidity/types/Bool.js
+++ b/src/solidity/types/Bool.js
@ -1,4 +1,5 @@
 'use strict'
+var util = require('./util')

 function Bool () {
  this.storageSlots = 1
@ -7,7 +8,8 @@ function Bool () {
 }

 Bool.prototype.decodeFromStorage = function (location, storageContent) {
-  return '<not implemented yet>'
+  var value = util.extractHexValue(location, storageContent, this.storageBytes)
+  return value !== '00'
 }

 module.exports = Bool
--- a/src/solidity/types/DynamicByteArray.js
+++ b/src/solidity/types/DynamicByteArray.js
@ -1,4 +1,6 @@
 'use strict'
+var util = require('./util')
+var BN = require('ethereumjs-util').BN

 function DynamicByteArray () {
  this.storageSlots = 1
@ -7,7 +9,30 @@ function DynamicByteArray () {
 }

 DynamicByteArray.prototype.decodeFromStorage = function (location, storageContent) {
-  return '<not implemented yet>'
+  var value = util.extractHexValue(location, storageContent, this.storageBytes)
+  var bn = new BN(value, 16)
+  if (bn.testn(0)) {
+    var length = bn.div(new BN(2))
+    var dataPos = new BN(util.sha3(location.slot).replace('0x', ''), 16)
+    var ret = ''
+    var currentSlot = util.readFromStorage(dataPos, storageContent)
+    while (length.gt(ret.length) && ret.length < 32000) {
+      currentSlot = currentSlot.replace('0x', '')
+      ret += currentSlot
+      dataPos = dataPos.add(new BN(1))
+      currentSlot = util.readFromStorage(dataPos, storageContent)
+    }
+    return {
+      value: '0x' + ret.replace(/(00)+$/, ''),
+      length: '0x' + length.toString(16)
+    }
+  } else {
+    var size = parseInt(value.substr(value.length - 2, 2), 16) / 2
+    return {
+      value: '0x' + value.substr(0, size * 2),
+      length: '0x' + size.toString(16)
+    }
+  }
 }

 module.exports = DynamicByteArray
--- a/src/solidity/types/Enum.js
+++ b/src/solidity/types/Enum.js
@ -1,4 +1,5 @@
 'use strict'
+var util = require('./util')

 function Enum (enumDef) {
  this.enumDef = enumDef
@ -13,7 +14,13 @@ function Enum (enumDef) {
 }

 Enum.prototype.decodeFromStorage = function (location, storageContent) {
-  return '<not implemented yet>'
+  var value = util.extractHexValue(location, storageContent, this.storageBytes)
+  value = parseInt(value, 16)
+  if (this.enumDef.children.length > value) {
+    return this.enumDef.children[value].attributes.name
+  } else {
+    return 'INVALID_ENUM<' + value + '>'
+  }
 }

 module.exports = Enum
--- a/src/solidity/types/FixedByteArray.js
+++ b/src/solidity/types/FixedByteArray.js
@ -1,4 +1,5 @@
 'use strict'
+var util = require('./util')

 function FixedByteArray (storageBytes) {
  this.storageSlots = 1
@ -7,7 +8,8 @@ function FixedByteArray (storageBytes) {
 }

 FixedByteArray.prototype.decodeFromStorage = function (location, storageContent) {
-  return '<not implemented yet>'
+  var value = util.extractHexValue(location, storageContent, this.storageBytes)
+  return '0x' + value.toUpperCase()
 }

 module.exports = FixedByteArray
--- a/src/solidity/types/StringType.js
+++ b/src/solidity/types/StringType.js
@ -1,13 +1,28 @@
 'use strict'
+var DynamicBytes = require('./DynamicByteArray')

 function StringType () {
  this.storageSlots = 1
  this.storageBytes = 32
  this.typeName = 'string'
+  this.dynamicBytes = new DynamicBytes()
 }

 StringType.prototype.decodeFromStorage = function (location, storageContent) {
-  return '<not implemented yet>'
+  var decoded = this.dynamicBytes.decodeFromStorage(location, storageContent)
+  var value = decoded.value
+  value = value.replace('0x', '').replace(/(..)/g, '%$1')
+  var ret = {
+    length: decoded.length,
+    raw: decoded.value
+  }
+  try {
+    ret.value = decodeURIComponent(value)
+  } catch (e) {
+    ret.error = 'Invalid UTF8 encoding'
+    ret.raw = decoded.value
+  }
+  return ret
 }

 module.exports = StringType
--- a/src/solidity/types/Uint.js
+++ b/src/solidity/types/Uint.js
@ -1,12 +1,10 @@
 'use strict'
-var IntType = require('./Int')
 var util = require('./util')

 function Uint (storageBytes) {
  this.storageSlots = 1
  this.storageBytes = storageBytes
  this.typeName = 'uint'
-  this.decodeInt = new IntType(storageBytes)
 }

 Uint.prototype.decodeFromStorage = function (location, storageContent) {
--- a/src/solidity/types/util.js
+++ b/src/solidity/types/util.js
@ -3,9 +3,10 @@ var ethutil = require('ethereumjs-util')
 var BN = require('ethereumjs-util').BN

 module.exports = {
-  extractHexByteSlice: extractHexByteSlice,
  readFromStorage: readFromStorage,
-  decodeInt: decodeInt
+  decodeInt: decodeInt,
+  extractHexValue: extractHexValue,
+  sha3: sha3
 }

 function decodeInt (location, storageContent, byteLength, signed) {
@ -19,24 +20,50 @@ function decodeInt (location, storageContent, byteLength, signed) {
 }

 function readFromStorage (slot, storageContent) {
+  var ret
  var hexSlot = ethutil.bufferToHex(slot)
  if (storageContent[hexSlot] !== undefined) {
-    return storageContent[hexSlot]
+    ret = storageContent[hexSlot].replace(/^0x/, '')
  } else {
    hexSlot = ethutil.bufferToHex(ethutil.setLengthLeft(slot, 32))
    if (storageContent[hexSlot] !== undefined) {
-      return storageContent[hexSlot]
+      ret = storageContent[hexSlot].replace(/^0x/, '')
    } else {
-      return '0x0'
+      ret = '000000000000000000000000000000000000000000000000000000000000000'
    }
  }
+  if (ret.length < 64) {
+    ret = (new Array(64 - ret.length + 1).join('0')) + ret
+  }
+  return ret
 }

+/**
+ * @returns a hex encoded byte slice of length @arg byteLength from inside @arg slotValue.
+ *
+ * @param {String} slotValue  - hex encoded value to extract the byte slice from
+ * @param {Int} byteLength  - Length of the byte slice to extract
+ * @param {Int} offsetFromLSB  - byte distance from the right end slot value to the right end of the byte slice
+ */
 function extractHexByteSlice (slotValue, byteLength, offsetFromLSB) {
-  slotValue = slotValue.replace('0x', '')
-  if (slotValue.length < 64) {
-    slotValue = (new Array(64 - slotValue.length + 1).join('0')) + slotValue
-  }
  var offset = slotValue.length - 2 * offsetFromLSB - 2 * byteLength
  return slotValue.substr(offset, 2 * byteLength)
 }
+
+/**
+ * @returns a hex encoded storage content at the given @arg location. it does not have Ox prefix but always has the full length.
+ *
+ * @param {Object} location  - object containing the slot and offset of the data to extract.
+ * @param {Object} storageContent  - full storage mapping.
+ * @param {Int} byteLength  - Length of the byte slice to extract
+ */
+function extractHexValue (location, storageContent, byteLength) {
+  var slotvalue = readFromStorage(location.slot, storageContent)
+  return extractHexByteSlice(slotvalue, byteLength, location.offset)
+}
+
+function sha3 (slot) {
+  var remoteSlot = ethutil.bufferToHex(ethutil.setLengthLeft(slot, 32))
+  var key = ethutil.sha3(remoteSlot)
+  return ethutil.bufferToHex(key)
+}
--- a/src/util/astWalker.js
+++ b/src/util/astWalker.js
@ -31,11 +31,11 @@ AstWalker.prototype.walk = function (ast, callback) {
 }

 /**
- +  * walk the given @astList
- +  *
- +  * @param {Object} sourcesList - sources list (containing root AST node)
- +  * @param {Function} - callback used by AstWalker to compute response
- +  */
+ * walk the given @astList
+ *
+ * @param {Object} sourcesList - sources list (containing root AST node)
+ * @param {Function} - callback used by AstWalker to compute response
+ */
 AstWalker.prototype.walkAstList = function (sourcesList, callback) {
  var walker = new AstWalker()
  for (var k in sourcesList) {
--- a/test/solidity/contracts/byteStorage.js
+++ b/test/solidity/contracts/byteStorage.js
@ -0,0 +1,89 @@
+'use strict'
+
+module.exports = {
+  contract: `
+  contract byteStorage {
+    enum enum1 { e0, e1, e2, e3, e4, e5, e6, e7, e8, e9, e10, e11, e12, e13, e14, e15, e16, e17, e18, e19, e20, e21, e22, e23, e24, e25, e26, e27, e28, e29, e30, e31, e32, e33, e34, e35, e36, e37, e38, e39, e40, e41, e42, e43, e44, e45, e46, e47, e48, e49, e50, e51, e52, e53, e54, e55, e56, e57, e58, e59, e60, e61, e62, e63, e64, e65, e66, e67, e68, e69, e70, e71, e72, e73, e74, e75, e76, e77, e78, e79, e80, e81, e82, e83, e84, e85, e86, e87, e88, e89, e90, e91, e92, e93, e94, e95, e96, e97, e98, e99, e100, e101, e102, e103, e104, e105, e106, e107, e108, e109, e110, e111, e112, e113, e114, e115, e116, e117, e118, e119, e120, e121, e122, e123, e124, e125, e126, e127, e128, e129, e130, e131, e132, e133, e134, e135, e136, e137, e138, e139, e140, e141, e142, e143, e144, e145, e146, e147, e148, e149, e150, e151, e152, e153, e154, e155, e156, e157, e158, e159, e160, e161, e162, e163, e164, e165, e166, e167, e168, e169, e170, e171, e172, e173, e174, e175, e176, e177, e178, e179, e180, e181, e182, e183, e184, e185, e186, e187, e188, e189, e190, e191, e192, e193, e194, e195, e196, e197, e198, e199, e200, e201, e202, e203, e204, e205, e206, e207, e208, e209, e210, e211, e212, e213, e214, e215, e216, e217, e218, e219, e220, e221, e222, e223, e224, e225, e226, e227, e228, e229, e230, e231, e232, e233, e234, e235, e236, e237, e238, e239, e240, e241, e242, e243, e244, e245, e246, e247, e248, e249, e250, e251, e252, e253, e254, e255, e256, e257, e258, e259, e260 }
+
+    bool b1 = false;
+    address a1 = 0xfe350f199f244ac9a79038d254400b632a633225;
+    bool b2 = true;
+    bytes dynb1 = "dynamicbytes";
+    byte stab = 0x1;
+    bytes1 stab1 = hex"12";
+    bytes2 stab2 = hex"1579";
+    bytes3 stab3 = hex"359356";
+    bytes4 stab4 = hex"2375";
+    bytes5 stab5 = hex"02357645";
+    bytes6  stab6 = hex"324435";
+    bytes7 stab7 = hex"004324";
+    bytes8 stab8 = hex"324554645765";
+    bytes9 stab9 = hex"03434543";
+    bytes10 stab10 = hex"04543543654657";
+    bytes11 stab11 = hex"54354654";
+    bytes12 stab12 = hex"03";
+    bytes13  stab13 = hex"03243242345435";
+    bytes14 stab14 = hex"32454354354353";
+    bytes15 stab15 = hex"032454434435";
+    bytes16  stab16 = hex"3245435444";
+    bytes17  stab17 = hex"032454343243243245";
+    bytes18 stab18 = hex"0324534325435435";
+    bytes19 stab19 = hex"0324543435435435";
+    bytes20 stab20 = hex"032454543543AB35";
+    bytes21 stab21 = hex"32454432423435";
+    bytes22  stab22 = hex"324543AEF5";
+    bytes23 stab23 = hex"3245435FFF";
+    bytes24 stab24 = hex"3245435F";
+    bytes25  stab25 = hex"3245435F";
+    bytes26 stab26 = hex"3245435F";
+    bytes27 stab27 = hex"03245FFFFFFF";
+    bytes28 stab28 = hex"03241235";
+    bytes29 stab29 = hex"0325213213";
+    bytes30 stab30 = hex"03245435232423";
+    bytes31 stab31 = hex"3245435123";
+    bytes32 stab32 = hex"324324423432543543AB";
+    enum1  enumDec = enum1.e240;
+    string str1 = 'short';
+    string str12 = 'шеллы';
+    string str2 = 'long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long';
+  }
+`,
+  storage: {
+    '0x0000000000000000000000000000000000000000000000000000000000000000': '0x0000000000000000000001fe350f199f244ac9a79038d254400b632a63322500',
+    '0x0000000000000000000000000000000000000000000000000000000000000001': '0x64796e616d696362797465730000000000000000000000000000000000000018',
+    '0x0000000000000000000000000000000000000000000000000000000000000002': '0x0000000043240000000032443500000002357645002375000035935615791201',
+    '0x0000000000000000000000000000000000000000000000000000000000000003': '0x0000000000045435436546570000000343454300000000003245546457650000',
+    '0x0000000000000000000000000000000000000000000000000000000000000004': '0x0000000000000000000300000000000000000000005435465400000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000005': '0x0000000000324543543543530000000000000003243242345435000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000006': '0x0032454354440000000000000000000000032454434435000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000007': '0x0000000000000000000000000000000324543432432432450000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000008': '0x0000000000000000000000000000032453432543543500000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000009': '0x0000000000000000000000000003245434354354350000000000000000000000',
+    '0x000000000000000000000000000000000000000000000000000000000000000a': '0x000000000000000000000000032454543543ab35000000000000000000000000',
+    '0x000000000000000000000000000000000000000000000000000000000000000b': '0x0000000000000000000000324544324234350000000000000000000000000000',
+    '0x000000000000000000000000000000000000000000000000000000000000000c': '0x00000000000000000000324543aef50000000000000000000000000000000000',
+    '0x000000000000000000000000000000000000000000000000000000000000000d': '0x0000000000000000003245435fff000000000000000000000000000000000000',
+    '0x000000000000000000000000000000000000000000000000000000000000000e': '0x00000000000000003245435f0000000000000000000000000000000000000000',
+    '0x000000000000000000000000000000000000000000000000000000000000000f': '0x000000000000003245435f000000000000000000000000000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000010': '0x0000000000003245435f00000000000000000000000000000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000011': '0x000000000003245fffffff000000000000000000000000000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000012': '0x0000000003241235000000000000000000000000000000000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000013': '0x0000000325213213000000000000000000000000000000000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000014': '0x0000032454352324230000000000000000000000000000000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000015': '0x0032454351230000000000000000000000000000000000000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000016': '0x324324423432543543ab00000000000000000000000000000000000000000000',
+    '0x0000000000000000000000000000000000000000000000000000000000000017': '0x00000000000000000000000000000000000000000000000000000000000000f0',
+    '0x0000000000000000000000000000000000000000000000000000000000000018': '0x73686f727400000000000000000000000000000000000000000000000000000a',
+    '0x0000000000000000000000000000000000000000000000000000000000000019': '0xd188d0b5d0bbd0bbd18b00000000000000000000000000000000000000000014',
+    '0x000000000000000000000000000000000000000000000000000000000000001a': '0x000000000000000000000000000000000000000000000000000000000000023d',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff63e': '0x6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff63f': '0x6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e67',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff640': '0x5f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff641': '0x6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff642': '0x6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e67',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff643': '0x5f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff644': '0x6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff645': '0x6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e67',
+    '0x057c384a7d1c54f3a1b2e5e67b2617b8224fdfd1ea7234eea573a6ff665ff646': '0x5f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e675f5f6c6f6e670000'
+  }
+}
--- a/test/solidity/storageDecoder.js
+++ b/test/solidity/storageDecoder.js
@ -6,6 +6,8 @@ var stateDecoder = require('../../src/index').solidity.stateDecoder
 tape('solidity', function (t) {
  t.test('storage decoder', function (st) {
    testIntStorage(st)
+    testByteStorage(st)
+    st.end()
  })
 })

@ -47,7 +49,102 @@ function testIntStorage (st) {
  st.equal(decoded['i256'], '0')
  st.equal(decoded['i'], '0')
  st.equal(decoded['ishrink'], '0')
-  st.end()
+}
+
+function testByteStorage (st) {
+  var byteStorage = require('./contracts/byteStorage')
+  var output = compiler.compile(byteStorage.contract, 0)
+  for (var storage of [byteStorage.storage, shrinkStorage(byteStorage.storage)]) {
+    var decoded = stateDecoder.solidityState(storage, output.sources, 'byteStorage')
+    st.equal(decoded['b1'], false)
+    st.equal(decoded['a1'], '0xFE350F199F244AC9A79038D254400B632A633225')
+    st.equal(decoded['b2'], true)
+    st.equal(decoded['dynb1'].value, '0x64796e616d69636279746573')
+    st.equal(decoded['dynb1'].length, '0xc')
+    st.equal(decoded['stab'], '0x01')
+    st.equal(decoded['stab1'], '0x12')
+    st.equal(decoded['stab2'], '0x1579')
+    st.equal(decoded['stab3'], '0x359356')
+    st.equal(decoded['stab4'], '0x23750000')
+    st.equal(decoded['stab5'], '0x0235764500')
+    st.equal(decoded['stab6'], '0x324435000000')
+    st.equal(decoded['stab7'], '0x00432400000000')
+    st.equal(decoded['stab8'], '0x3245546457650000')
+    st.equal(decoded['stab9'], '0x034345430000000000')
+    st.equal(decoded['stab10'], '0x04543543654657000000')
+    st.equal(decoded['stab11'], '0x5435465400000000000000')
+    st.equal(decoded['stab12'], '0x030000000000000000000000')
+    st.equal(decoded['stab13'], '0x03243242345435000000000000')
+    st.equal(decoded['stab14'], '0x3245435435435300000000000000')
+    st.equal(decoded['stab15'], '0x032454434435000000000000000000')
+    st.equal(decoded['stab16'], '0x32454354440000000000000000000000')
+    st.equal(decoded['stab17'], '0x0324543432432432450000000000000000')
+    st.equal(decoded['stab18'], '0x032453432543543500000000000000000000')
+    st.equal(decoded['stab19'], '0x03245434354354350000000000000000000000')
+    st.equal(decoded['stab20'], '0x032454543543AB35000000000000000000000000')
+    st.equal(decoded['stab21'], '0x324544324234350000000000000000000000000000')
+    st.equal(decoded['stab22'], '0x324543AEF50000000000000000000000000000000000')
+    st.equal(decoded['stab23'], '0x3245435FFF000000000000000000000000000000000000')
+    st.equal(decoded['stab24'], '0x3245435F0000000000000000000000000000000000000000')
+    st.equal(decoded['stab25'], '0x3245435F000000000000000000000000000000000000000000')
+    st.equal(decoded['stab26'], '0x3245435F00000000000000000000000000000000000000000000')
+    st.equal(decoded['stab27'], '0x03245FFFFFFF000000000000000000000000000000000000000000')
+    st.equal(decoded['stab28'], '0x03241235000000000000000000000000000000000000000000000000')
+    st.equal(decoded['stab29'], '0x0325213213000000000000000000000000000000000000000000000000')
+    st.equal(decoded['stab30'], '0x032454352324230000000000000000000000000000000000000000000000')
+    st.equal(decoded['stab31'], '0x32454351230000000000000000000000000000000000000000000000000000')
+    st.equal(decoded['stab32'], '0x324324423432543543AB00000000000000000000000000000000000000000000')
+    st.equal(decoded['enumDec'], 'e240')
+    st.equal(decoded['str1'].value, 'short')
+    st.equal(decoded['str12'].value, 'шеллы')
+    st.equal(decoded['str2'].value, 'long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long__long')
+  }
+
+  decoded = stateDecoder.solidityState({}, output.sources, 'byteStorage')
+  st.equal(decoded['b1'], false)
+  st.equal(decoded['a1'], '0x0000000000000000000000000000000000000000')
+  st.equal(decoded['b2'], false)
+  st.equal(decoded['dynb1'].value, '0x')
+  st.equal(decoded['dynb1'].length, '0x0')
+  st.equal(decoded['stab'], '0x00')
+  st.equal(decoded['stab1'], '0x00')
+  st.equal(decoded['stab2'], '0x0000')
+  st.equal(decoded['stab3'], '0x000000')
+  st.equal(decoded['stab4'], '0x00000000')
+  st.equal(decoded['stab5'], '0x0000000000')
+  st.equal(decoded['stab6'], '0x000000000000')
+  st.equal(decoded['stab7'], '0x00000000000000')
+  st.equal(decoded['stab8'], '0x0000000000000000')
+  st.equal(decoded['stab9'], '0x000000000000000000')
+  st.equal(decoded['stab10'], '0x00000000000000000000')
+  st.equal(decoded['stab11'], '0x0000000000000000000000')
+  st.equal(decoded['stab12'], '0x000000000000000000000000')
+  st.equal(decoded['stab13'], '0x00000000000000000000000000')
+  st.equal(decoded['stab14'], '0x0000000000000000000000000000')
+  st.equal(decoded['stab15'], '0x000000000000000000000000000000')
+  st.equal(decoded['stab16'], '0x00000000000000000000000000000000')
+  st.equal(decoded['stab17'], '0x0000000000000000000000000000000000')
+  st.equal(decoded['stab18'], '0x000000000000000000000000000000000000')
+  st.equal(decoded['stab19'], '0x00000000000000000000000000000000000000')
+  st.equal(decoded['stab20'], '0x0000000000000000000000000000000000000000')
+  st.equal(decoded['stab21'], '0x000000000000000000000000000000000000000000')
+  st.equal(decoded['stab22'], '0x00000000000000000000000000000000000000000000')
+  st.equal(decoded['stab23'], '0x0000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab24'], '0x000000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab25'], '0x00000000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab26'], '0x0000000000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab27'], '0x000000000000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab28'], '0x00000000000000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab29'], '0x0000000000000000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab30'], '0x000000000000000000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab31'], '0x00000000000000000000000000000000000000000000000000000000000000')
+  st.equal(decoded['stab32'], '0x0000000000000000000000000000000000000000000000000000000000000000')
+  st.equal(decoded['enumDec'], 'e0')
+  st.equal(decoded['str1'].length, '0x0')
+  st.equal(decoded['str2'].length, '0x0')
+  st.equal(decoded['str1'].value, '')
+  st.equal(decoded['str12'].value, '')
+  st.equal(decoded['str2'].value, '')
 }

 function shrinkStorage (storage) {