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Make code independent of NodeJS core modules

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This commit is contained in:
Jordi
2019-02-12 12:21:44 +01:00
parent 138945bfdc
commit 2635e8d3c9
5 changed files with 23 additions and 20 deletions
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20
src/evmasm.js
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@@ -4,7 +4,6 @@
const Web3Utils = require("web3-utils");
const assert = require("assert");
class Contract {
constructor() {
@@ -141,7 +140,9 @@ class Contract {
msize() { this.code.push(0x59); }
gas() { this.code.push(0x5a); }
label(name) {
assert(typeof this.labels[name] == "undefined", "Label already defined");
if (typeof this.labels[name] != "undefined") {
throw new Error("Label already defined");
}
this.labels[name] = this.code.length;
this.code.push(0x5b);
@@ -150,20 +151,23 @@ class Contract {
push(data) {
const d = Web3Utils.hexToBytes(Web3Utils.toHex(data));
assert(d.length>0);
assert(d.length<=32);
if (d.length == 0 || d.length > 32) {
throw new Error("Assertion failed");
}
this.code = this.code.concat([0x5F + d.length], d);
}
dup(n) {
assert(n>=0);
assert(n<16);
if (n < 0 || n >= 16) {
throw new Error("Assertion failed");
}
this.code.push(0x80 + n);
}
swap(n) {
assert(n>=1);
assert(n<=16);
if (n < 1 || n > 16) {
throw new Error("Assertion failed");
}
this.code.push(0x8f + n);
}