github.com/zjj1991/quorum@v0.0.0-20190524123704-ae4b0a1e1a19/internal/web3ext/web3ext.go (about)

     1  // Copyright 2015 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // package web3ext contains geth specific web3.js extensions.
    18  package web3ext
    19  
    20  var Modules = map[string]string{
    21  	"admin":      Admin_JS,
    22  	"chequebook": Chequebook_JS,
    23  	"clique":     Clique_JS,
    24  	"ethash":     Ethash_JS,
    25  	"debug":      Debug_JS,
    26  	"eth":        Eth_JS,
    27  	"miner":      Miner_JS,
    28  	"net":        Net_JS,
    29  	"personal":   Personal_JS,
    30  	"rpc":        RPC_JS,
    31  	"shh":        Shh_JS,
    32  	"swarmfs":    SWARMFS_JS,
    33  	"txpool":     TxPool_JS,
    34  	"raft":       Raft_JS,
    35  	"istanbul":   Istanbul_JS,
    36  }
    37  
    38  const Chequebook_JS = `
    39  web3._extend({
    40  	property: 'chequebook',
    41  	methods: [
    42  		new web3._extend.Method({
    43  			name: 'deposit',
    44  			call: 'chequebook_deposit',
    45  			params: 1,
    46  			inputFormatter: [null]
    47  		}),
    48  		new web3._extend.Property({
    49  			name: 'balance',
    50  			getter: 'chequebook_balance',
    51  			outputFormatter: web3._extend.utils.toDecimal
    52  		}),
    53  		new web3._extend.Method({
    54  			name: 'cash',
    55  			call: 'chequebook_cash',
    56  			params: 1,
    57  			inputFormatter: [null]
    58  		}),
    59  		new web3._extend.Method({
    60  			name: 'issue',
    61  			call: 'chequebook_issue',
    62  			params: 2,
    63  			inputFormatter: [null, null]
    64  		}),
    65  	]
    66  });
    67  `
    68  
    69  const Clique_JS = `
    70  web3._extend({
    71  	property: 'clique',
    72  	methods: [
    73  		new web3._extend.Method({
    74  			name: 'getSnapshot',
    75  			call: 'clique_getSnapshot',
    76  			params: 1,
    77  			inputFormatter: [null]
    78  		}),
    79  		new web3._extend.Method({
    80  			name: 'getSnapshotAtHash',
    81  			call: 'clique_getSnapshotAtHash',
    82  			params: 1
    83  		}),
    84  		new web3._extend.Method({
    85  			name: 'getSigners',
    86  			call: 'clique_getSigners',
    87  			params: 1,
    88  			inputFormatter: [null]
    89  		}),
    90  		new web3._extend.Method({
    91  			name: 'getSignersAtHash',
    92  			call: 'clique_getSignersAtHash',
    93  			params: 1
    94  		}),
    95  		new web3._extend.Method({
    96  			name: 'propose',
    97  			call: 'clique_propose',
    98  			params: 2
    99  		}),
   100  		new web3._extend.Method({
   101  			name: 'discard',
   102  			call: 'clique_discard',
   103  			params: 1
   104  		}),
   105  	],
   106  	properties: [
   107  		new web3._extend.Property({
   108  			name: 'proposals',
   109  			getter: 'clique_proposals'
   110  		}),
   111  	]
   112  });
   113  `
   114  
   115  const Ethash_JS = `
   116  web3._extend({
   117  	property: 'ethash',
   118  	methods: [
   119  		new web3._extend.Method({
   120  			name: 'getWork',
   121  			call: 'ethash_getWork',
   122  			params: 0
   123  		}),
   124  		new web3._extend.Method({
   125  			name: 'getHashrate',
   126  			call: 'ethash_getHashrate',
   127  			params: 0
   128  		}),
   129  		new web3._extend.Method({
   130  			name: 'submitWork',
   131  			call: 'ethash_submitWork',
   132  			params: 3,
   133  		}),
   134  		new web3._extend.Method({
   135  			name: 'submitHashRate',
   136  			call: 'ethash_submitHashRate',
   137  			params: 2,
   138  		}),
   139  	]
   140  });
   141  `
   142  
   143  const Admin_JS = `
   144  web3._extend({
   145  	property: 'admin',
   146  	methods: [
   147  		new web3._extend.Method({
   148  			name: 'addPeer',
   149  			call: 'admin_addPeer',
   150  			params: 1
   151  		}),
   152  		new web3._extend.Method({
   153  			name: 'removePeer',
   154  			call: 'admin_removePeer',
   155  			params: 1
   156  		}),
   157  		new web3._extend.Method({
   158  			name: 'addTrustedPeer',
   159  			call: 'admin_addTrustedPeer',
   160  			params: 1
   161  		}),
   162  		new web3._extend.Method({
   163  			name: 'removeTrustedPeer',
   164  			call: 'admin_removeTrustedPeer',
   165  			params: 1
   166  		}),
   167  		new web3._extend.Method({
   168  			name: 'exportChain',
   169  			call: 'admin_exportChain',
   170  			params: 1,
   171  			inputFormatter: [null]
   172  		}),
   173  		new web3._extend.Method({
   174  			name: 'importChain',
   175  			call: 'admin_importChain',
   176  			params: 1
   177  		}),
   178  		new web3._extend.Method({
   179  			name: 'sleepBlocks',
   180  			call: 'admin_sleepBlocks',
   181  			params: 2
   182  		}),
   183  		new web3._extend.Method({
   184  			name: 'startRPC',
   185  			call: 'admin_startRPC',
   186  			params: 4,
   187  			inputFormatter: [null, null, null, null]
   188  		}),
   189  		new web3._extend.Method({
   190  			name: 'stopRPC',
   191  			call: 'admin_stopRPC'
   192  		}),
   193  		new web3._extend.Method({
   194  			name: 'startWS',
   195  			call: 'admin_startWS',
   196  			params: 4,
   197  			inputFormatter: [null, null, null, null]
   198  		}),
   199  		new web3._extend.Method({
   200  			name: 'stopWS',
   201  			call: 'admin_stopWS'
   202  		}),
   203  	],
   204  	properties: [
   205  		new web3._extend.Property({
   206  			name: 'nodeInfo',
   207  			getter: 'admin_nodeInfo'
   208  		}),
   209  		new web3._extend.Property({
   210  			name: 'peers',
   211  			getter: 'admin_peers'
   212  		}),
   213  		new web3._extend.Property({
   214  			name: 'datadir',
   215  			getter: 'admin_datadir'
   216  		}),
   217  	]
   218  });
   219  `
   220  
   221  const Debug_JS = `
   222  web3._extend({
   223  	property: 'debug',
   224  	methods: [
   225  		new web3._extend.Method({
   226  			name: 'printBlock',
   227  			call: 'debug_printBlock',
   228  			params: 1
   229  		}),
   230  		new web3._extend.Method({
   231  			name: 'getBlockRlp',
   232  			call: 'debug_getBlockRlp',
   233  			params: 1
   234  		}),
   235  		new web3._extend.Method({
   236  			name: 'setHead',
   237  			call: 'debug_setHead',
   238  			params: 1
   239  		}),
   240  		new web3._extend.Method({
   241  			name: 'seedHash',
   242  			call: 'debug_seedHash',
   243  			params: 1
   244  		}),
   245  		new web3._extend.Method({
   246  			name: 'dumpBlock',
   247  			call: 'debug_dumpBlock',
   248  			params: 1
   249  		}),
   250  		new web3._extend.Method({
   251  			name: 'chaindbProperty',
   252  			call: 'debug_chaindbProperty',
   253  			params: 1,
   254  			outputFormatter: console.log
   255  		}),
   256  		new web3._extend.Method({
   257  			name: 'chaindbCompact',
   258  			call: 'debug_chaindbCompact',
   259  		}),
   260  		new web3._extend.Method({
   261  			name: 'metrics',
   262  			call: 'debug_metrics',
   263  			params: 1
   264  		}),
   265  		new web3._extend.Method({
   266  			name: 'verbosity',
   267  			call: 'debug_verbosity',
   268  			params: 1
   269  		}),
   270  		new web3._extend.Method({
   271  			name: 'vmodule',
   272  			call: 'debug_vmodule',
   273  			params: 1
   274  		}),
   275  		new web3._extend.Method({
   276  			name: 'backtraceAt',
   277  			call: 'debug_backtraceAt',
   278  			params: 1,
   279  		}),
   280  		new web3._extend.Method({
   281  			name: 'stacks',
   282  			call: 'debug_stacks',
   283  			params: 0,
   284  			outputFormatter: console.log
   285  		}),
   286  		new web3._extend.Method({
   287  			name: 'freeOSMemory',
   288  			call: 'debug_freeOSMemory',
   289  			params: 0,
   290  		}),
   291  		new web3._extend.Method({
   292  			name: 'setGCPercent',
   293  			call: 'debug_setGCPercent',
   294  			params: 1,
   295  		}),
   296  		new web3._extend.Method({
   297  			name: 'memStats',
   298  			call: 'debug_memStats',
   299  			params: 0,
   300  		}),
   301  		new web3._extend.Method({
   302  			name: 'gcStats',
   303  			call: 'debug_gcStats',
   304  			params: 0,
   305  		}),
   306  		new web3._extend.Method({
   307  			name: 'cpuProfile',
   308  			call: 'debug_cpuProfile',
   309  			params: 2
   310  		}),
   311  		new web3._extend.Method({
   312  			name: 'startCPUProfile',
   313  			call: 'debug_startCPUProfile',
   314  			params: 1
   315  		}),
   316  		new web3._extend.Method({
   317  			name: 'stopCPUProfile',
   318  			call: 'debug_stopCPUProfile',
   319  			params: 0
   320  		}),
   321  		new web3._extend.Method({
   322  			name: 'goTrace',
   323  			call: 'debug_goTrace',
   324  			params: 2
   325  		}),
   326  		new web3._extend.Method({
   327  			name: 'startGoTrace',
   328  			call: 'debug_startGoTrace',
   329  			params: 1
   330  		}),
   331  		new web3._extend.Method({
   332  			name: 'stopGoTrace',
   333  			call: 'debug_stopGoTrace',
   334  			params: 0
   335  		}),
   336  		new web3._extend.Method({
   337  			name: 'blockProfile',
   338  			call: 'debug_blockProfile',
   339  			params: 2
   340  		}),
   341  		new web3._extend.Method({
   342  			name: 'setBlockProfileRate',
   343  			call: 'debug_setBlockProfileRate',
   344  			params: 1
   345  		}),
   346  		new web3._extend.Method({
   347  			name: 'writeBlockProfile',
   348  			call: 'debug_writeBlockProfile',
   349  			params: 1
   350  		}),
   351  		new web3._extend.Method({
   352  			name: 'mutexProfile',
   353  			call: 'debug_mutexProfile',
   354  			params: 2
   355  		}),
   356  		new web3._extend.Method({
   357  			name: 'setMutexProfileFraction',
   358  			call: 'debug_setMutexProfileFraction',
   359  			params: 1
   360  		}),
   361  		new web3._extend.Method({
   362  			name: 'writeMutexProfile',
   363  			call: 'debug_writeMutexProfile',
   364  			params: 1
   365  		}),
   366  		new web3._extend.Method({
   367  			name: 'writeMemProfile',
   368  			call: 'debug_writeMemProfile',
   369  			params: 1
   370  		}),
   371  		new web3._extend.Method({
   372  			name: 'traceBlock',
   373  			call: 'debug_traceBlock',
   374  			params: 2,
   375  			inputFormatter: [null, null]
   376  		}),
   377  		new web3._extend.Method({
   378  			name: 'traceBlockFromFile',
   379  			call: 'debug_traceBlockFromFile',
   380  			params: 2,
   381  			inputFormatter: [null, null]
   382  		}),
   383  		new web3._extend.Method({
   384  			name: 'traceBadBlock',
   385  			call: 'debug_traceBadBlock',
   386  			params: 1,
   387  			inputFormatter: [null]
   388  		}),
   389  		new web3._extend.Method({
   390  			name: 'traceBlockByNumber',
   391  			call: 'debug_traceBlockByNumber',
   392  			params: 2,
   393  			inputFormatter: [null, null]
   394  		}),
   395  		new web3._extend.Method({
   396  			name: 'traceBlockByHash',
   397  			call: 'debug_traceBlockByHash',
   398  			params: 2,
   399  			inputFormatter: [null, null]
   400  		}),
   401  		new web3._extend.Method({
   402  			name: 'traceTransaction',
   403  			call: 'debug_traceTransaction',
   404  			params: 2,
   405  			inputFormatter: [null, null]
   406  		}),
   407  		new web3._extend.Method({
   408  			name: 'preimage',
   409  			call: 'debug_preimage',
   410  			params: 1,
   411  			inputFormatter: [null]
   412  		}),
   413  		new web3._extend.Method({
   414  			name: 'getBadBlocks',
   415  			call: 'debug_getBadBlocks',
   416  			params: 0,
   417  		}),
   418  		new web3._extend.Method({
   419  			name: 'storageRangeAt',
   420  			call: 'debug_storageRangeAt',
   421  			params: 5,
   422  		}),
   423  		new web3._extend.Method({
   424  			name: 'getModifiedAccountsByNumber',
   425  			call: 'debug_getModifiedAccountsByNumber',
   426  			params: 2,
   427  			inputFormatter: [null, null],
   428  		}),
   429  		new web3._extend.Method({
   430  			name: 'getModifiedAccountsByHash',
   431  			call: 'debug_getModifiedAccountsByHash',
   432  			params: 2,
   433  			inputFormatter:[null, null],
   434  		}),
   435  	],
   436  	properties: []
   437  });
   438  `
   439  
   440  const Eth_JS = `
   441  web3._extend({
   442  	property: 'eth',
   443  	methods: [
   444  		new web3._extend.Method({
   445  			name: 'sendRawPrivateTransaction',
   446  			call: 'eth_sendRawPrivateTransaction',
   447  			params: 2,
   448  			inputFormatter: [null, null]
   449  		}),
   450  		new web3._extend.Method({
   451  			name: 'chainId',
   452  			call: 'eth_chainId',
   453  			params: 0
   454  		}),
   455  		new web3._extend.Method({
   456  			name: 'sign',
   457  			call: 'eth_sign',
   458  			params: 2,
   459  			inputFormatter: [web3._extend.formatters.inputAddressFormatter, null]
   460  		}),
   461  		new web3._extend.Method({
   462  			name: 'resend',
   463  			call: 'eth_resend',
   464  			params: 3,
   465  			inputFormatter: [web3._extend.formatters.inputTransactionFormatter, web3._extend.utils.fromDecimal, web3._extend.utils.fromDecimal]
   466  		}),
   467  		new web3._extend.Method({
   468  			name: 'signTransaction',
   469  			call: 'eth_signTransaction',
   470  			params: 1,
   471  			inputFormatter: [web3._extend.formatters.inputTransactionFormatter]
   472  		}),
   473  		new web3._extend.Method({
   474  			name: 'submitTransaction',
   475  			call: 'eth_submitTransaction',
   476  			params: 1,
   477  			inputFormatter: [web3._extend.formatters.inputTransactionFormatter]
   478  		}),
   479  		new web3._extend.Method({
   480  			name: 'getRawTransaction',
   481  			call: 'eth_getRawTransactionByHash',
   482  			params: 1
   483  		}),
   484  		new web3._extend.Method({
   485  			name: 'getRawTransactionFromBlock',
   486  			call: function(args) {
   487  				return (web3._extend.utils.isString(args[0]) && args[0].indexOf('0x') === 0) ? 'eth_getRawTransactionByBlockHashAndIndex' : 'eth_getRawTransactionByBlockNumberAndIndex';
   488  			},
   489  			params: 2,
   490  			inputFormatter: [web3._extend.formatters.inputBlockNumberFormatter, web3._extend.utils.toHex]
   491  		}),
   492  		new web3._extend.Method({
   493  			name: 'getProof',
   494  			call: 'eth_getProof',
   495  			params: 3,
   496  			inputFormatter: [web3._extend.formatters.inputAddressFormatter, null, web3._extend.formatters.inputBlockNumberFormatter]
   497  		}),
   498  		new web3._extend.Method({
   499  			name: 'storageRoot',
   500  			call: 'eth_storageRoot',
   501  			params: 2,
   502  			inputFormatter: [web3._extend.formatters.inputAddressFormatter, null]
   503  		})
   504  	],
   505  	properties: [
   506  		new web3._extend.Property({
   507  			name: 'pendingTransactions',
   508  			getter: 'eth_pendingTransactions',
   509  			outputFormatter: function(txs) {
   510  				var formatted = [];
   511  				for (var i = 0; i < txs.length; i++) {
   512  					formatted.push(web3._extend.formatters.outputTransactionFormatter(txs[i]));
   513  					formatted[i].blockHash = null;
   514  				}
   515  				return formatted;
   516  			}
   517  		}),
   518  	]
   519  });
   520  `
   521  
   522  const Miner_JS = `
   523  web3._extend({
   524  	property: 'miner',
   525  	methods: [
   526  		new web3._extend.Method({
   527  			name: 'start',
   528  			call: 'miner_start',
   529  			params: 1,
   530  			inputFormatter: [null]
   531  		}),
   532  		new web3._extend.Method({
   533  			name: 'stop',
   534  			call: 'miner_stop'
   535  		}),
   536  		new web3._extend.Method({
   537  			name: 'setEtherbase',
   538  			call: 'miner_setEtherbase',
   539  			params: 1,
   540  			inputFormatter: [web3._extend.formatters.inputAddressFormatter]
   541  		}),
   542  		new web3._extend.Method({
   543  			name: 'setExtra',
   544  			call: 'miner_setExtra',
   545  			params: 1
   546  		}),
   547  		new web3._extend.Method({
   548  			name: 'setGasPrice',
   549  			call: 'miner_setGasPrice',
   550  			params: 1,
   551  			inputFormatter: [web3._extend.utils.fromDecimal]
   552  		}),
   553  		new web3._extend.Method({
   554  			name: 'setRecommitInterval',
   555  			call: 'miner_setRecommitInterval',
   556  			params: 1,
   557  		}),
   558  		new web3._extend.Method({
   559  			name: 'getHashrate',
   560  			call: 'miner_getHashrate'
   561  		}),
   562  	],
   563  	properties: []
   564  });
   565  `
   566  
   567  const Net_JS = `
   568  web3._extend({
   569  	property: 'net',
   570  	methods: [],
   571  	properties: [
   572  		new web3._extend.Property({
   573  			name: 'version',
   574  			getter: 'net_version'
   575  		}),
   576  	]
   577  });
   578  `
   579  
   580  const Personal_JS = `
   581  web3._extend({
   582  	property: 'personal',
   583  	methods: [
   584  		new web3._extend.Method({
   585  			name: 'importRawKey',
   586  			call: 'personal_importRawKey',
   587  			params: 2
   588  		}),
   589  		new web3._extend.Method({
   590  			name: 'sign',
   591  			call: 'personal_sign',
   592  			params: 3,
   593  			inputFormatter: [null, web3._extend.formatters.inputAddressFormatter, null]
   594  		}),
   595  		new web3._extend.Method({
   596  			name: 'ecRecover',
   597  			call: 'personal_ecRecover',
   598  			params: 2
   599  		}),
   600  		new web3._extend.Method({
   601  			name: 'openWallet',
   602  			call: 'personal_openWallet',
   603  			params: 2
   604  		}),
   605  		new web3._extend.Method({
   606  			name: 'deriveAccount',
   607  			call: 'personal_deriveAccount',
   608  			params: 3
   609  		}),
   610  		new web3._extend.Method({
   611  			name: 'signTransaction',
   612  			call: 'personal_signTransaction',
   613  			params: 2,
   614  			inputFormatter: [web3._extend.formatters.inputTransactionFormatter, null]
   615  		}),
   616  	],
   617  	properties: [
   618  		new web3._extend.Property({
   619  			name: 'listWallets',
   620  			getter: 'personal_listWallets'
   621  		}),
   622  	]
   623  })
   624  `
   625  
   626  const RPC_JS = `
   627  web3._extend({
   628  	property: 'rpc',
   629  	methods: [],
   630  	properties: [
   631  		new web3._extend.Property({
   632  			name: 'modules',
   633  			getter: 'rpc_modules'
   634  		}),
   635  	]
   636  });
   637  `
   638  
   639  const Shh_JS = `
   640  web3._extend({
   641  	property: 'shh',
   642  	methods: [
   643  	],
   644  	properties:
   645  	[
   646  		new web3._extend.Property({
   647  			name: 'version',
   648  			getter: 'shh_version',
   649  			outputFormatter: web3._extend.utils.toDecimal
   650  		}),
   651  		new web3._extend.Property({
   652  			name: 'info',
   653  			getter: 'shh_info'
   654  		}),
   655  	]
   656  });
   657  `
   658  
   659  const SWARMFS_JS = `
   660  web3._extend({
   661  	property: 'swarmfs',
   662  	methods:
   663  	[
   664  		new web3._extend.Method({
   665  			name: 'mount',
   666  			call: 'swarmfs_mount',
   667  			params: 2
   668  		}),
   669  		new web3._extend.Method({
   670  			name: 'unmount',
   671  			call: 'swarmfs_unmount',
   672  			params: 1
   673  		}),
   674  		new web3._extend.Method({
   675  			name: 'listmounts',
   676  			call: 'swarmfs_listmounts',
   677  			params: 0
   678  		}),
   679  	]
   680  });
   681  `
   682  
   683  const TxPool_JS = `
   684  web3._extend({
   685  	property: 'txpool',
   686  	methods: [],
   687  	properties:
   688  	[
   689  		new web3._extend.Property({
   690  			name: 'content',
   691  			getter: 'txpool_content'
   692  		}),
   693  		new web3._extend.Property({
   694  			name: 'inspect',
   695  			getter: 'txpool_inspect'
   696  		}),
   697  		new web3._extend.Property({
   698  			name: 'status',
   699  			getter: 'txpool_status',
   700  			outputFormatter: function(status) {
   701  				status.pending = web3._extend.utils.toDecimal(status.pending);
   702  				status.queued = web3._extend.utils.toDecimal(status.queued);
   703  				return status;
   704  			}
   705  		}),
   706  	]
   707  });
   708  `
   709  
   710  const Raft_JS = `
   711  web3._extend({
   712         property: 'raft',
   713         methods:
   714         [
   715         ],
   716         properties:
   717         [
   718                 new web3._extend.Property({
   719                         name: 'role',
   720                         getter: 'raft_role'
   721                 }),
   722                 new web3._extend.Method({
   723                         name: 'addPeer',
   724                         call: 'raft_addPeer',
   725                         params: 1
   726                 }),
   727                 new web3._extend.Method({
   728                         name: 'removePeer',
   729                         call: 'raft_removePeer',
   730                         params: 1
   731                 }),
   732                 new web3._extend.Property({
   733                         name: 'leader',
   734                         getter: 'raft_leader'
   735                 }),
   736                 new web3._extend.Property({
   737                         name: 'cluster',
   738                         getter: 'raft_cluster'
   739                 }),
   740         ]
   741  })
   742  `
   743  
   744  const Istanbul_JS = `
   745  web3._extend({
   746  	property: 'istanbul',
   747  	methods:
   748  	[
   749  		new web3._extend.Method({
   750  			name: 'getSnapshot',
   751  			call: 'istanbul_getSnapshot',
   752  			params: 1,
   753  			inputFormatter: [null]
   754  		}),
   755  		new web3._extend.Method({
   756  			name: 'getSnapshotAtHash',
   757  			call: 'istanbul_getSnapshotAtHash',
   758  			params: 1
   759  		}),
   760  		new web3._extend.Method({
   761  			name: 'getValidators',
   762  			call: 'istanbul_getValidators',
   763  			params: 1,
   764  			inputFormatter: [null]
   765  		}),
   766  		new web3._extend.Method({
   767  			name: 'getValidatorsAtHash',
   768  			call: 'istanbul_getValidatorsAtHash',
   769  			params: 1
   770  		}),
   771  		new web3._extend.Method({
   772  			name: 'propose',
   773  			call: 'istanbul_propose',
   774  			params: 2
   775  		}),
   776  		new web3._extend.Method({
   777  			name: 'discard',
   778  			call: 'istanbul_discard',
   779  			params: 1
   780  		})
   781  	],
   782  	properties:
   783  	[
   784  		new web3._extend.Property({
   785  			name: 'candidates',
   786  			getter: 'istanbul_candidates'
   787  		}),
   788  	]
   789  });
   790  `