constants separated to const.js file

lib/abi.js

@@ -21,22 +21,12 @@
  * @date 2014
  */
 
-if (process.env.NODE_ENV !== 'build') {
-    var BigNumber = require('bignumber.js'); // jshint ignore:line
-}
-
 var web3 = require('./web3'); 
 var utils = require('./utils');
 var types = require('./types');
+var c = require('./const');
 var f = require('./formatters');
 
-BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });
-
-var ETH_PADDING = 32;
-
-/// method signature length in bytes
-var ETH_METHOD_SIGNATURE_LENGTH = 4;
-
 /// Filters all function from input abi
 /// @returns abi array with filtered objects of type 'function'
 var filterFunctions = function (json) {
@@ -74,7 +64,7 @@ var inputTypes = types.inputTypes();
 /// @returns bytes representation of input params
 var toAbiInput = function (method, params) {
     var bytes = "";
-    var padding = ETH_PADDING * 2;
+    var padding = c.ETH_PADDING * 2;
 
     /// first we iterate in search for dynamic 
     method.inputs.forEach(function (input, index) {
@@ -107,7 +97,7 @@ var toAbiInput = function (method, params) {
 
 var dynamicBytesLength = function (type) {
     if (arrayType(type) || type === 'string')   // only string itself that is dynamic; stringX is static length.
-        return ETH_PADDING * 2;
+        return c.ETH_PADDING * 2;
     return 0;
 };
 
@@ -121,7 +111,7 @@ var fromAbiOutput = function (method, output) {
     
     output = output.slice(2);
     var result = [];
-    var padding = ETH_PADDING * 2;
+    var padding = c.ETH_PADDING * 2;
 
     var dynamicPartLength = method.outputs.reduce(function (acc, curr) {
         return acc + dynamicBytesLength(curr.type);
@@ -227,7 +217,7 @@ var outputParser = function (json) {
 /// @param method name for which we want to get method signature
 /// @returns (promise) contract method signature for method with given name
 var methodSignature = function (name) {
-    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + ETH_METHOD_SIGNATURE_LENGTH * 2);
+    return web3.sha3(web3.fromAscii(name)).slice(0, 2 + c.ETH_METHOD_SIGNATURE_LENGTH * 2);
 };
 
 module.exports = {

lib/const.js

@@ -0,0 +1,33 @@
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file const.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+/// required to define ETH_BIGNUMBER_ROUNDING_MODE
+if (process.env.NODE_ENV !== 'build') {
+    var BigNumber = require('bignumber.js'); // jshint ignore:line
+}
+
+module.exports = {
+    ETH_PADDING: 32,
+    ETH_METHOD_SIGNATURE_LENGTH: 4,
+    ETH_BIGNUMBER_ROUNDING_MODE: { ROUNDING_MODE: BigNumber.ROUND_DOWN }
+};
+

lib/formatters.js

@@ -25,10 +25,7 @@ if (process.env.NODE_ENV !== 'build') {
 }
 
 var utils = require('./utils');
-
-BigNumber.config({ ROUNDING_MODE: BigNumber.ROUND_DOWN });
-
-var ETH_PADDING = 32;
+var c = require('./const');
 
 /// @param string string to be padded
 /// @param number of characters that result string should have
@@ -43,10 +40,11 @@ var padLeft = function (string, chars, sign) {
 /// If the value is floating point, round it down
 /// @returns right-aligned byte representation of int
 var formatInputInt = function (value) {
-    var padding = ETH_PADDING * 2;
+    var padding = c.ETH_PADDING * 2;
     if (value instanceof BigNumber || typeof value === 'number') {
         if (typeof value === 'number')
             value = new BigNumber(value);
+        BigNumber.config(c.ETH_BIGNUMBER_ROUNDING_MODE);
         value = value.round();
 
         if (value.lessThan(0)) 
@@ -65,7 +63,7 @@ var formatInputInt = function (value) {
 /// Formats input value to byte representation of string
 /// @returns left-algined byte representation of string
 var formatInputString = function (value) {
-    return utils.fromAscii(value, ETH_PADDING).substr(2);
+    return utils.fromAscii(value, c.ETH_PADDING).substr(2);
 };
 
 /// Formats input value to byte representation of bool