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step by step encoding

This commit is contained in:
debris 2015-07-28 01:36:32 +02:00
parent 2559b958a6
commit b043832cfd
2 changed files with 76 additions and 6 deletions
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64
lib/solidity/coder.js
View File

@ -100,7 +100,7 @@ SolidityType.prototype.encode = function (value, name) {
var nestedName = this.nestedName(name);
var result = [];
result.push(f.formatInputInt(length)).encode();
result.push(f.formatInputInt(length).encode());
var self = this;
value.forEach(function (v) {
@ -229,11 +229,11 @@ SolidityCoder.prototype.encodeParams = function (types, params) {
var solidityTypes = this.getSolidityTypes(types);
var offsets = this.getOffsets(types, solidityTypes);
var encoded = solidityTypes.map(function (solidityType, index) {
var encodeds = solidityTypes.map(function (solidityType, index) {
return solidityType.encode(params[index], types[index]);
});
console.log(encoded);
console.log(encodeds);
var totalOffset = solidityTypes.reduce(function (acc, solidityType, index) {
return acc + solidityType.staticPartLength(types[index]);
@ -241,16 +241,68 @@ SolidityCoder.prototype.encodeParams = function (types, params) {
var result = solidityTypes.reduce(function (acc, solidityType, index) {
if (solidityType.isDynamicArray(types[index])) {
return acc + f.formatInputInt(offsets[index]).encode();
} else {
return acc + encoded[index];
return acc + f.formatInputInt(totalOffset + offsets[index]).encode();
} else if (solidityType.isStaticArray(types[index])) {
var offset = acc.length / 2;
return acc + encodeds[index].join('');
}
return acc + encodeds[index];
}, "");
console.log(result);
var self = this;
result = solidityTypes.filter(function (solidityType, index) {
return solidityType.isDynamicArray(types[index]);
}).reduce(function (acc, solidityType, index) {
var offset = acc.length / 2;
return acc + self.encodeWithOffset(types[index], solidityType, encodeds[index], offset);
}, result);
console.log(result);
return result;
};
SolidityCoder.prototype.encodeWithOffset = function (type, solidityType, encoded, offset) {
if (solidityType.isDynamicArray(type)) {
// offset was already set
var nestedName = solidityType.nestedName(type);
var nestedStaticPartLength = solidityType.staticPartLength(nestedName);
var result = encoded[0];
if (solidityType.isDynamicArray(nestedName)) {
for (var i = 0; i < encoded.length; i++) {
result += f.formatInputInt(offset + i * nestedStaticPartLength + encoded.length * 32);
}
}
// first element is length, skip it
for (var i = 0; i < encoded.length - 1; i++) {
result += this.encodeWithOffset(nestedName, solidityType, encoded[i + 1], offset + i * nestedStaticPartLength);
}
return result;
} else if (solidityType.isStaticArray(type)) {
var nestedName = solidityType.nestedName(type);
var nestedStaticPartLength = solidityType.staticPartLength(nestedName);
var result = "";
if (solidityType.isDynamicArray(nestedName)) {
for (var i = 0; i < encoded.length; i++) {
result += f.formatInputInt(offset + i * nestedStaticPartLength + encoded.length * 32);
}
}
for (var i = 0; i < encoded.length; i++) {
result += this.encodeWithOffset(nestedName, solidityType, encoded[i], offset + i * nestedStaticPartLength);
}
return result;
}
return encoded;
};
/**
* Should be used to decode bytes to plain param

18
test/coder.encodeParam.js
View File

@ -14,6 +14,24 @@ describe('lib/solidity/coder', function () {
test({ type: 'address', value: '0x407d73d8a49eeb85d32cf465507dd71d507100c1',
expected: '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1'});
test({ type: 'address[2]', value: ['0x407d73d8a49eeb85d32cf465507dd71d507100c1', '0x407d73d8a49eeb85d32cf465507dd71d507100c3'],
expected: '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1' +
'000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c3' });
test({ type: 'address[]', value: ['0x407d73d8a49eeb85d32cf465507dd71d507100c1', '0x407d73d8a49eeb85d32cf465507dd71d507100c3'],
expected: '0000000000000000000000000000000000000000000000000000000000000020' +
'0000000000000000000000000000000000000000000000000000000000000002' +
'000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1' +
'000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c3' });
//test({ type: 'address[2][]', value: [['0x407d73d8a49eeb85d32cf465507dd71d507100c1', '0x407d73d8a49eeb85d32cf465507dd71d507100c2'],
//['0x407d73d8a49eeb85d32cf465507dd71d507100c3', '0x407d73d8a49eeb85d32cf465507dd71d507100c4']],
//expected: '0000000000000000000000000000000000000000000000000000000000000040' +
//'00000000000000000000000000000000000000000000000000000000000000a0' +
//'0000000000000000000000000000000000000000000000000000000000000002' + [> 40 <]
//'000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1' + [> 60 <]
//'000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c2' +
//'0000000000000000000000000000000000000000000000000000000000000002' + [> a0 <]
//'000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c3' +
//'000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c4' });
//test({ type: 'int', value: 1, expected: '0000000000000000000000000000000000000000000000000000000000000001'});
//test({ type: 'int', value: 16, expected: '0000000000000000000000000000000000000000000000000000000000000010'});
//test({ type: 'int', value: -1, expected: 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'});