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bitcore-lib-zcash
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Add tests for script.toASM() and new method script.fromASM()

This commit is contained in:
Braydon Fuller 2015-07-06 20:24:15 -04:00
parent b81a64e8cf
commit 55d8c4156a
2 changed files with 60 additions and 0 deletions
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42
lib/script/script.js
View File

@ -134,6 +134,48 @@ Script.prototype.toBuffer = function() {
return bw.concat();
};
Script.fromASM = function(str) {
var script = new Script();
script.chunks = [];
var tokens = str.split(' ');
var i = 0;
while (i < tokens.length) {
var token = tokens[i];
var opcode = Opcode(token);
var opcodenum = opcode.toNumber();
if (_.isUndefined(opcodenum)) {
var buf = new Buffer(tokens[i], 'hex');
script.chunks.push({
buf: buf,
len: buf.length,
opcodenum: buf.length
});
i = i + 1;
} else if (opcodenum === Opcode.OP_PUSHDATA1 ||
opcodenum === Opcode.OP_PUSHDATA2 ||
opcodenum === Opcode.OP_PUSHDATA4) {
script.chunks.push({
buf: new Buffer(tokens[i + 2], 'hex'),
len: parseInt(tokens[i + 1]),
opcodenum: opcodenum
});
i = i + 3;
} else {
script.chunks.push({
opcodenum: opcodenum
});
i = i + 1;
}
}
return script;
};
Script.fromHex = function(str) {
return new Script(new buffer.Buffer(str, 'hex'));
};
Script.fromString = function(str) {
if (JSUtil.isHexa(str) || str.length === 0) {
return new Script(new buffer.Buffer(str, 'hex'));

18
test/script/script.js
View File

@ -159,6 +159,19 @@ describe('Script', function() {
});
describe('#fromASM', function() {
it('should parse this known script in ASM', function() {
var asm = 'OP_DUP OP_HASH160 f4c03610e60ad15100929cc23da2f3a799af1725 OP_EQUALVERIFY OP_CHECKSIG';
var script = Script.fromASM(asm);
script.chunks[0].opcodenum.should.equal(Opcode.OP_DUP);
script.chunks[1].opcodenum.should.equal(Opcode.OP_HASH160);
script.chunks[2].opcodenum.should.equal(20);
script.chunks[2].buf.toString('hex').should.equal('f4c03610e60ad15100929cc23da2f3a799af1725');
script.chunks[3].opcodenum.should.equal(Opcode.OP_EQUALVERIFY);
script.chunks[4].opcodenum.should.equal(Opcode.OP_CHECKSIG);
});
});
describe('#fromString', function() {
it('should parse these known scripts', function() {
@ -191,6 +204,11 @@ describe('Script', function() {
script.toString().toString('hex').should.equal('OP_0 OP_PUSHDATA4 3 0x010203 OP_0');
});
it('should output this known script as ASM', function() {
var script = Script.fromHex('76a914f4c03610e60ad15100929cc23da2f3a799af172588ac');
script.toASM().should.equal('OP_DUP OP_HASH160 f4c03610e60ad15100929cc23da2f3a799af1725 OP_EQUALVERIFY OP_CHECKSIG');
});
});
describe('toHex', function() {