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encoding: rename written to offset.

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This commit is contained in:
Christopher Jeffrey 2017-08-24 22:36:59 -07:00
parent 22a879f154
commit 13892b3b38
No known key found for this signature in database
GPG Key ID: 8962AB9DE6666BBD
6 changed files with 95 additions and 94 deletions
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4
lib/primitives/tx.js
View File

@ -2442,12 +2442,12 @@ TX.prototype.writeWitness = function writeWitness(bw) {
for (const output of this.outputs)
output.toWriter(bw);
let witness = bw.written;
const start = bw.offset;
for (const input of this.inputs)
input.witness.toWriter(bw);
witness = bw.written - witness;
const witness = bw.offset - start;
bw.writeU32(this.locktime);

2
lib/script/script.js
View File

@ -3426,7 +3426,7 @@ Script.verifyMast = function verifyMast(program, stack, output, flags, tx, index
for (let j = 0; j < subscripts; j++) {
const script = stack.get(-(4 + j));
if (version === 0) {
if ((scripts.written + script.length) > consensus.MAX_SCRIPT_SIZE)
if ((scripts.offset + script.length) > consensus.MAX_SCRIPT_SIZE)
throw new ScriptError('SCRIPT_SIZE');
}
scriptRoot.writeBytes(digest.hash256(script));

7
lib/utils/reader.js
View File

@ -10,6 +10,7 @@
const assert = require('assert');
const encoding = require('./encoding');
const digest = require('../crypto/digest');
const EMPTY_BUFFER = Buffer.alloc(0);
/**
* An object that allows reading of buffers in a sane manner.
@ -144,9 +145,9 @@ BufferReader.prototype.endData = function endData(zeroCopy) {
*/
BufferReader.prototype.destroy = function destroy() {
this.offset = null;
this.stack = null;
this.data = null;
this.data = EMPTY_BUFFER;
this.offset = 0;
this.stack.length = 0;
};
/**

95
lib/utils/staticwriter.js
View File

@ -9,6 +9,7 @@
const assert = require('assert');
const encoding = require('./encoding');
const digest = require('../crypto/digest');
const EMPTY_BUFFER = Buffer.alloc(0);
/**
* Statically allocated buffer writer.
@ -22,7 +23,7 @@ function StaticWriter(size) {
return new StaticWriter(size);
this.data = Buffer.allocUnsafe(size);
this.written = 0;
this.offset = 0;
}
/**
@ -34,7 +35,7 @@ function StaticWriter(size) {
StaticWriter.prototype.render = function render(keep) {
const data = this.data;
assert(this.written === data.length);
assert(this.offset === data.length);
if (!keep)
this.destroy();
@ -48,7 +49,7 @@ StaticWriter.prototype.render = function render(keep) {
*/
StaticWriter.prototype.getSize = function getSize() {
return this.written;
return this.offset;
};
/**
@ -57,7 +58,7 @@ StaticWriter.prototype.getSize = function getSize() {
*/
StaticWriter.prototype.seek = function seek(offset) {
this.written += offset;
this.offset += offset;
};
/**
@ -65,8 +66,8 @@ StaticWriter.prototype.seek = function seek(offset) {
*/
StaticWriter.prototype.destroy = function destroy() {
this.data = null;
this.written = null;
this.data = EMPTY_BUFFER;
this.offset = 0;
};
/**
@ -75,7 +76,7 @@ StaticWriter.prototype.destroy = function destroy() {
*/
StaticWriter.prototype.writeU8 = function writeU8(value) {
this.written = this.data.writeUInt8(value, this.written, true);
this.offset = this.data.writeUInt8(value, this.offset, true);
};
/**
@ -84,7 +85,7 @@ StaticWriter.prototype.writeU8 = function writeU8(value) {
*/
StaticWriter.prototype.writeU16 = function writeU16(value) {
this.written = this.data.writeUInt16LE(value, this.written, true);
this.offset = this.data.writeUInt16LE(value, this.offset, true);
};
/**
@ -93,7 +94,7 @@ StaticWriter.prototype.writeU16 = function writeU16(value) {
*/
StaticWriter.prototype.writeU16BE = function writeU16BE(value) {
this.written = this.data.writeUInt16BE(value, this.written, true);
this.offset = this.data.writeUInt16BE(value, this.offset, true);
};
/**
@ -102,7 +103,7 @@ StaticWriter.prototype.writeU16BE = function writeU16BE(value) {
*/
StaticWriter.prototype.writeU32 = function writeU32(value) {
this.written = this.data.writeUInt32LE(value, this.written, true);
this.offset = this.data.writeUInt32LE(value, this.offset, true);
};
/**
@ -111,7 +112,7 @@ StaticWriter.prototype.writeU32 = function writeU32(value) {
*/
StaticWriter.prototype.writeU32BE = function writeU32BE(value) {
this.written = this.data.writeUInt32BE(value, this.written, true);
this.offset = this.data.writeUInt32BE(value, this.offset, true);
};
/**
@ -120,7 +121,7 @@ StaticWriter.prototype.writeU32BE = function writeU32BE(value) {
*/
StaticWriter.prototype.writeU64 = function writeU64(value) {
this.written = encoding.writeU64(this.data, value, this.written);
this.offset = encoding.writeU64(this.data, value, this.offset);
};
/**
@ -129,7 +130,7 @@ StaticWriter.prototype.writeU64 = function writeU64(value) {
*/
StaticWriter.prototype.writeU64BE = function writeU64BE(value) {
this.written = encoding.writeU64BE(this.data, value, this.written);
this.offset = encoding.writeU64BE(this.data, value, this.offset);
};
/**
@ -138,7 +139,7 @@ StaticWriter.prototype.writeU64BE = function writeU64BE(value) {
*/
StaticWriter.prototype.writeU64N = function writeU64N(value) {
this.written = encoding.writeU64N(this.data, value, this.written);
this.offset = encoding.writeU64N(this.data, value, this.offset);
};
/**
@ -147,7 +148,7 @@ StaticWriter.prototype.writeU64N = function writeU64N(value) {
*/
StaticWriter.prototype.writeU64BEN = function writeU64BEN(value) {
this.written = encoding.writeU64BEN(this.data, value, this.written);
this.offset = encoding.writeU64BEN(this.data, value, this.offset);
};
/**
@ -156,7 +157,7 @@ StaticWriter.prototype.writeU64BEN = function writeU64BEN(value) {
*/
StaticWriter.prototype.writeI8 = function writeI8(value) {
this.written = this.data.writeInt8(value, this.written, true);
this.offset = this.data.writeInt8(value, this.offset, true);
};
/**
@ -165,7 +166,7 @@ StaticWriter.prototype.writeI8 = function writeI8(value) {
*/
StaticWriter.prototype.writeI16 = function writeI16(value) {
this.written = this.data.writeInt16LE(value, this.written, true);
this.offset = this.data.writeInt16LE(value, this.offset, true);
};
/**
@ -174,7 +175,7 @@ StaticWriter.prototype.writeI16 = function writeI16(value) {
*/
StaticWriter.prototype.writeI16BE = function writeI16BE(value) {
this.written = this.data.writeInt16BE(value, this.written, true);
this.offset = this.data.writeInt16BE(value, this.offset, true);
};
/**
@ -183,7 +184,7 @@ StaticWriter.prototype.writeI16BE = function writeI16BE(value) {
*/
StaticWriter.prototype.writeI32 = function writeI32(value) {
this.written = this.data.writeInt32LE(value, this.written, true);
this.offset = this.data.writeInt32LE(value, this.offset, true);
};
/**
@ -192,7 +193,7 @@ StaticWriter.prototype.writeI32 = function writeI32(value) {
*/
StaticWriter.prototype.writeI32BE = function writeI32BE(value) {
this.written = this.data.writeInt32BE(value, this.written, true);
this.offset = this.data.writeInt32BE(value, this.offset, true);
};
/**
@ -201,7 +202,7 @@ StaticWriter.prototype.writeI32BE = function writeI32BE(value) {
*/
StaticWriter.prototype.writeI64 = function writeI64(value) {
this.written = encoding.writeI64(this.data, value, this.written);
this.offset = encoding.writeI64(this.data, value, this.offset);
};
/**
@ -210,7 +211,7 @@ StaticWriter.prototype.writeI64 = function writeI64(value) {
*/
StaticWriter.prototype.writeI64BE = function writeI64BE(value) {
this.written = encoding.writeI64BE(this.data, value, this.written);
this.offset = encoding.writeI64BE(this.data, value, this.offset);
};
/**
@ -219,7 +220,7 @@ StaticWriter.prototype.writeI64BE = function writeI64BE(value) {
*/
StaticWriter.prototype.writeI64N = function writeI64N(value) {
this.written = encoding.writeI64N(this.data, value, this.written);
this.offset = encoding.writeI64N(this.data, value, this.offset);
};
/**
@ -228,7 +229,7 @@ StaticWriter.prototype.writeI64N = function writeI64N(value) {
*/
StaticWriter.prototype.writeI64BEN = function writeI64BEN(value) {
this.written = encoding.writeI64BEN(this.data, value, this.written);
this.offset = encoding.writeI64BEN(this.data, value, this.offset);
};
/**
@ -237,7 +238,7 @@ StaticWriter.prototype.writeI64BEN = function writeI64BEN(value) {
*/
StaticWriter.prototype.writeFloat = function writeFloat(value) {
this.written = this.data.writeFloatLE(value, this.written, true);
this.offset = this.data.writeFloatLE(value, this.offset, true);
};
/**
@ -246,7 +247,7 @@ StaticWriter.prototype.writeFloat = function writeFloat(value) {
*/
StaticWriter.prototype.writeFloatBE = function writeFloatBE(value) {
this.written = this.data.writeFloatBE(value, this.written, true);
this.offset = this.data.writeFloatBE(value, this.offset, true);
};
/**
@ -255,7 +256,7 @@ StaticWriter.prototype.writeFloatBE = function writeFloatBE(value) {
*/
StaticWriter.prototype.writeDouble = function writeDouble(value) {
this.written = this.data.writeDoubleLE(value, this.written, true);
this.offset = this.data.writeDoubleLE(value, this.offset, true);
};
/**
@ -264,7 +265,7 @@ StaticWriter.prototype.writeDouble = function writeDouble(value) {
*/
StaticWriter.prototype.writeDoubleBE = function writeDoubleBE(value) {
this.written = this.data.writeDoubleBE(value, this.written, true);
this.offset = this.data.writeDoubleBE(value, this.offset, true);
};
/**
@ -273,7 +274,7 @@ StaticWriter.prototype.writeDoubleBE = function writeDoubleBE(value) {
*/
StaticWriter.prototype.writeVarint = function writeVarint(value) {
this.written = encoding.writeVarint(this.data, value, this.written);
this.offset = encoding.writeVarint(this.data, value, this.offset);
};
/**
@ -282,7 +283,7 @@ StaticWriter.prototype.writeVarint = function writeVarint(value) {
*/
StaticWriter.prototype.writeVarintN = function writeVarintN(value) {
this.written = encoding.writeVarintN(this.data, value, this.written);
this.offset = encoding.writeVarintN(this.data, value, this.offset);
};
/**
@ -291,7 +292,7 @@ StaticWriter.prototype.writeVarintN = function writeVarintN(value) {
*/
StaticWriter.prototype.writeVarint2 = function writeVarint2(value) {
this.written = encoding.writeVarint2(this.data, value, this.written);
this.offset = encoding.writeVarint2(this.data, value, this.offset);
};
/**
@ -300,7 +301,7 @@ StaticWriter.prototype.writeVarint2 = function writeVarint2(value) {
*/
StaticWriter.prototype.writeVarint2N = function writeVarint2N(value) {
this.written = encoding.writeVarint2N(this.data, value, this.written);
this.offset = encoding.writeVarint2N(this.data, value, this.offset);
};
/**
@ -312,9 +313,9 @@ StaticWriter.prototype.writeBytes = function writeBytes(value) {
if (value.length === 0)
return;
value.copy(this.data, this.written);
value.copy(this.data, this.offset);
this.written += value.length;
this.offset += value.length;
};
/**
@ -340,8 +341,8 @@ StaticWriter.prototype.copy = function copy(value, start, end) {
if (len === 0)
return;
value.copy(this.data, this.written, start, end);
this.written += len;
value.copy(this.data, this.offset, start, end);
this.offset += len;
};
/**
@ -356,9 +357,9 @@ StaticWriter.prototype.writeString = function writeString(value, enc) {
const size = Buffer.byteLength(value, enc);
this.data.write(value, this.written, enc);
this.data.write(value, this.offset, enc);
this.written += size;
this.offset += size;
};
/**
@ -373,8 +374,8 @@ StaticWriter.prototype.writeHash = function writeHash(value) {
return;
}
assert(value.length === 64);
this.data.write(value, this.written, 'hex');
this.written += 32;
this.data.write(value, this.offset, 'hex');
this.offset += 32;
};
/**
@ -392,9 +393,9 @@ StaticWriter.prototype.writeVarString = function writeVarString(value, enc) {
const size = Buffer.byteLength(value, enc);
this.writeVarint(size);
this.data.write(value, this.written, enc);
this.data.write(value, this.offset, enc);
this.written += size;
this.offset += size;
};
/**
@ -413,10 +414,10 @@ StaticWriter.prototype.writeNullString = function writeNullString(value, enc) {
*/
StaticWriter.prototype.writeChecksum = function writeChecksum() {
const data = this.data.slice(0, this.written);
const data = this.data.slice(0, this.offset);
const hash = digest.hash256(data);
hash.copy(this.data, this.written, 0, 4);
this.written += 4;
hash.copy(this.data, this.offset, 0, 4);
this.offset += 4;
};
/**
@ -431,8 +432,8 @@ StaticWriter.prototype.fill = function fill(value, size) {
if (size === 0)
return;
this.data.fill(value, this.written, this.written + size);
this.written += size;
this.data.fill(value, this.offset, this.offset + size);
this.offset += size;
};
/*

79
lib/utils/writer.js
View File

@ -66,7 +66,7 @@ function BufferWriter() {
return new BufferWriter();
this.ops = [];
this.written = 0;
this.offset = 0;
}
/**
@ -76,7 +76,7 @@ function BufferWriter() {
*/
BufferWriter.prototype.render = function render(keep) {
const data = Buffer.allocUnsafe(this.written);
const data = Buffer.allocUnsafe(this.offset);
let off = 0;
for (const op of this.ops) {
@ -195,7 +195,7 @@ BufferWriter.prototype.render = function render(keep) {
*/
BufferWriter.prototype.getSize = function getSize() {
return this.written;
return this.offset;
};
/**
@ -204,7 +204,7 @@ BufferWriter.prototype.getSize = function getSize() {
*/
BufferWriter.prototype.seek = function seek(offset) {
this.written += offset;
this.offset += offset;
this.ops.push(new WriteOp(SEEK, offset));
};
@ -214,8 +214,7 @@ BufferWriter.prototype.seek = function seek(offset) {
BufferWriter.prototype.destroy = function destroy() {
this.ops.length = 0;
this.ops = null;
this.written = null;
this.offset = 0;
};
/**
@ -224,7 +223,7 @@ BufferWriter.prototype.destroy = function destroy() {
*/
BufferWriter.prototype.writeU8 = function writeU8(value) {
this.written += 1;
this.offset += 1;
this.ops.push(new WriteOp(UI8, value));
};
@ -234,7 +233,7 @@ BufferWriter.prototype.writeU8 = function writeU8(value) {
*/
BufferWriter.prototype.writeU16 = function writeU16(value) {
this.written += 2;
this.offset += 2;
this.ops.push(new WriteOp(UI16, value));
};
@ -244,7 +243,7 @@ BufferWriter.prototype.writeU16 = function writeU16(value) {
*/
BufferWriter.prototype.writeU16BE = function writeU16BE(value) {
this.written += 2;
this.offset += 2;
this.ops.push(new WriteOp(UI16BE, value));
};
@ -254,7 +253,7 @@ BufferWriter.prototype.writeU16BE = function writeU16BE(value) {
*/
BufferWriter.prototype.writeU32 = function writeU32(value) {
this.written += 4;
this.offset += 4;
this.ops.push(new WriteOp(UI32, value));
};
@ -264,7 +263,7 @@ BufferWriter.prototype.writeU32 = function writeU32(value) {
*/
BufferWriter.prototype.writeU32BE = function writeU32BE(value) {
this.written += 4;
this.offset += 4;
this.ops.push(new WriteOp(UI32BE, value));
};
@ -274,7 +273,7 @@ BufferWriter.prototype.writeU32BE = function writeU32BE(value) {
*/
BufferWriter.prototype.writeU64 = function writeU64(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(UI64, value));
};
@ -284,7 +283,7 @@ BufferWriter.prototype.writeU64 = function writeU64(value) {
*/
BufferWriter.prototype.writeU64BE = function writeU64BE(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(UI64BE, value));
};
@ -294,7 +293,7 @@ BufferWriter.prototype.writeU64BE = function writeU64BE(value) {
*/
BufferWriter.prototype.writeU64N = function writeU64N(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(UI64N, value));
};
@ -304,7 +303,7 @@ BufferWriter.prototype.writeU64N = function writeU64N(value) {
*/
BufferWriter.prototype.writeU64BEN = function writeU64BEN(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(UI64BEN, value));
};
@ -314,7 +313,7 @@ BufferWriter.prototype.writeU64BEN = function writeU64BEN(value) {
*/
BufferWriter.prototype.writeI8 = function writeI8(value) {
this.written += 1;
this.offset += 1;
this.ops.push(new WriteOp(I8, value));
};
@ -324,7 +323,7 @@ BufferWriter.prototype.writeI8 = function writeI8(value) {
*/
BufferWriter.prototype.writeI16 = function writeI16(value) {
this.written += 2;
this.offset += 2;
this.ops.push(new WriteOp(I16, value));
};
@ -334,7 +333,7 @@ BufferWriter.prototype.writeI16 = function writeI16(value) {
*/
BufferWriter.prototype.writeI16BE = function writeI16BE(value) {
this.written += 2;
this.offset += 2;
this.ops.push(new WriteOp(I16BE, value));
};
@ -344,7 +343,7 @@ BufferWriter.prototype.writeI16BE = function writeI16BE(value) {
*/
BufferWriter.prototype.writeI32 = function writeI32(value) {
this.written += 4;
this.offset += 4;
this.ops.push(new WriteOp(I32, value));
};
@ -354,7 +353,7 @@ BufferWriter.prototype.writeI32 = function writeI32(value) {
*/
BufferWriter.prototype.writeI32BE = function writeI32BE(value) {
this.written += 4;
this.offset += 4;
this.ops.push(new WriteOp(I32BE, value));
};
@ -364,7 +363,7 @@ BufferWriter.prototype.writeI32BE = function writeI32BE(value) {
*/
BufferWriter.prototype.writeI64 = function writeI64(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(I64, value));
};
@ -374,7 +373,7 @@ BufferWriter.prototype.writeI64 = function writeI64(value) {
*/
BufferWriter.prototype.writeI64BE = function writeI64BE(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(I64BE, value));
};
@ -384,7 +383,7 @@ BufferWriter.prototype.writeI64BE = function writeI64BE(value) {
*/
BufferWriter.prototype.writeI64N = function writeI64N(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(I64N, value));
};
@ -394,7 +393,7 @@ BufferWriter.prototype.writeI64N = function writeI64N(value) {
*/
BufferWriter.prototype.writeI64BEN = function writeI64BEN(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(I64BEN, value));
};
@ -404,7 +403,7 @@ BufferWriter.prototype.writeI64BEN = function writeI64BEN(value) {
*/
BufferWriter.prototype.writeFloat = function writeFloat(value) {
this.written += 4;
this.offset += 4;
this.ops.push(new WriteOp(FL, value));
};
@ -414,7 +413,7 @@ BufferWriter.prototype.writeFloat = function writeFloat(value) {
*/
BufferWriter.prototype.writeFloatBE = function writeFloatBE(value) {
this.written += 4;
this.offset += 4;
this.ops.push(new WriteOp(FLBE, value));
};
@ -424,7 +423,7 @@ BufferWriter.prototype.writeFloatBE = function writeFloatBE(value) {
*/
BufferWriter.prototype.writeDouble = function writeDouble(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(DBL, value));
};
@ -434,7 +433,7 @@ BufferWriter.prototype.writeDouble = function writeDouble(value) {
*/
BufferWriter.prototype.writeDoubleBE = function writeDoubleBE(value) {
this.written += 8;
this.offset += 8;
this.ops.push(new WriteOp(DBLBE, value));
};
@ -444,7 +443,7 @@ BufferWriter.prototype.writeDoubleBE = function writeDoubleBE(value) {
*/
BufferWriter.prototype.writeVarint = function writeVarint(value) {
this.written += encoding.sizeVarint(value);
this.offset += encoding.sizeVarint(value);
this.ops.push(new WriteOp(VARINT, value));
};
@ -454,7 +453,7 @@ BufferWriter.prototype.writeVarint = function writeVarint(value) {
*/
BufferWriter.prototype.writeVarintN = function writeVarintN(value) {
this.written += encoding.sizeVarintN(value);
this.offset += encoding.sizeVarintN(value);
this.ops.push(new WriteOp(VARINTN, value));
};
@ -464,7 +463,7 @@ BufferWriter.prototype.writeVarintN = function writeVarintN(value) {
*/
BufferWriter.prototype.writeVarint2 = function writeVarint2(value) {
this.written += encoding.sizeVarint2(value);
this.offset += encoding.sizeVarint2(value);
this.ops.push(new WriteOp(VARINT2, value));
};
@ -474,7 +473,7 @@ BufferWriter.prototype.writeVarint2 = function writeVarint2(value) {
*/
BufferWriter.prototype.writeVarint2N = function writeVarint2N(value) {
this.written += encoding.sizeVarint2N(value);
this.offset += encoding.sizeVarint2N(value);
this.ops.push(new WriteOp(VARINT2N, value));
};
@ -487,7 +486,7 @@ BufferWriter.prototype.writeBytes = function writeBytes(value) {
if (value.length === 0)
return;
this.written += value.length;
this.offset += value.length;
this.ops.push(new WriteOp(BYTES, value));
};
@ -497,13 +496,13 @@ BufferWriter.prototype.writeBytes = function writeBytes(value) {
*/
BufferWriter.prototype.writeVarBytes = function writeVarBytes(value) {
this.written += encoding.sizeVarint(value.length);
this.offset += encoding.sizeVarint(value.length);
this.ops.push(new WriteOp(VARINT, value.length));
if (value.length === 0)
return;
this.written += value.length;
this.offset += value.length;
this.ops.push(new WriteOp(BYTES, value));
};
@ -530,7 +529,7 @@ BufferWriter.prototype.writeString = function writeString(value, enc) {
if (value.length === 0)
return;
this.written += Buffer.byteLength(value, enc);
this.offset += Buffer.byteLength(value, enc);
this.ops.push(new WriteOp(STR, value, enc));
};
@ -563,8 +562,8 @@ BufferWriter.prototype.writeVarString = function writeVarString(value, enc) {
const size = Buffer.byteLength(value, enc);
this.written += encoding.sizeVarint(size);
this.written += size;
this.offset += encoding.sizeVarint(size);
this.offset += size;
this.ops.push(new WriteOp(VARINT, size));
@ -587,7 +586,7 @@ BufferWriter.prototype.writeNullString = function writeNullString(value, enc) {
*/
BufferWriter.prototype.writeChecksum = function writeChecksum() {
this.written += 4;
this.offset += 4;
this.ops.push(new WriteOp(CHECKSUM));
};
@ -603,7 +602,7 @@ BufferWriter.prototype.fill = function fill(value, size) {
if (size === 0)
return;
this.written += size;
this.offset += size;
this.ops.push(new WriteOp(FILL, value, null, size));
};

2
migrate/coins-old.js
View File

@ -257,7 +257,7 @@ Coins.prototype.toRaw = function toRaw() {
// allocating a buffer. We mark the spents
// after rendering the final buffer.
bw.writeVarint(len);
const start = bw.written;
const start = bw.offset;
bw.fill(0, len);
// Write the compressed outputs.