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import * as React from 'react';
import { render, hydrate } from 'react-dom';
import context from 'ts/context/profiler';
import Base from 'ts/components/Base';
import Content from 'ts/components/Content';
import ContentBlock from 'ts/components/ContentBlock';
import Breakout from 'ts/components/Breakout';
import { Tabs, TabBlock } from 'ts/components/Tabs';
import Code from 'ts/components/Code';
import InlineCode from 'ts/components/InlineCode';
import { List, ListItem } from 'ts/components/List';
import { Intro, IntroLead, IntroAside } from 'ts/components/Intro';
function Profiler() {
return (
<Base context={context}>
<Intro>
<IntroLead title="Headline">
<p>
Sol-profiler gathers line-by-line gas usage for any transaction submitted through your provider.
This will help you find unexpected inefficiencies in parts of your smart contract, and take a
data-driven approach to optimizing it.
</p>
</IntroLead>
<IntroAside>
<Code language="javascript" diff gutterLength={6} gutter={[15, 15, undefined, 21747, 20303, 1435]}>
{`+function() public payable {
+ deposit();
}
+function deposit() public payabble {
+ balanceOf[msg.sender] += msg.value;
+ Deposit(msg.sender, msg.value);
}
-function withdraw(uint wad) public {
- require(balanceOf[msg.sender] >= wad);
- balanceOf[msg.sender] -= wad;
- msg.sender.transfer(wad);
- Withdrawal(msg.sender, wad);
}`}
</Code>
</IntroAside>
</Intro>
<Content>
<ContentBlock main title="Get started" />
<ContentBlock title="Prerequisites">
<List>
<ListItem>
Use <a href="#">ganache-cli</a> as a backing node.
</ListItem>
<ListItem>
Understand and use <a href="#">web3-provider-engine</a>.
</ListItem>
</List>
</ContentBlock>
<ContentBlock title="Installation">
<Breakout>
<Code>npm install @0x/sol-trace --save</Code>
</Breakout>
<p>
Sol-trace is a subprovider that needs to be prepended to your <a href="#">provider engine</a>.
Depending on your project setup, you will need to use a specific ArtifactAdapter. Sol-trace
ships with the <InlineCode>SolCompilerArtifactAdapter</InlineCode> for use with{' '}
<a href="#">Sol-compiler</a> and <InlineCode>TruffleArtifactAdapter</InlineCode> for use with
the <a href="#">Truffle framework</a>. You can also write your own and support any artifact
format.
</p>
<Tabs>
<TabBlock title="Sol-compiler">
<Code language="js">
{`import { SolCompilerArtifactAdapter } from '@0x/sol-trace';
// Both artifactsDir and contractsDir are optional and will be fetched from compiler.json if not passed in
const artifactAdapter = new SolCompilerArtifactAdapter(artifactsDir, contractsDir);`}
</Code>
</TabBlock>
<TabBlock title="Truffle">Truffle</TabBlock>
<TabBlock title="Custom">Custom</TabBlock>
</Tabs>
<p>
Now that we have an <InlineCode>artifactAdapter</InlineCode>, we can create a{' '}
<InlineCode>RevertTraceSubprovider</InlineCode> and append it to our provider engine.
</p>
<Breakout>
<Code language="js">
{`import { ProviderEngine, RpcSubprovider } from 'web3-provider-engine';
import { RevertTraceSubprovider } from '@0x/sol-cov';
const defaultFromAddress = "..."; // Some ethereum address with test funds
const revertTraceSubprovider = new RevertTraceSubprovider(artifactAdapter, defaultFromAddress);
const providerEngine = new ProviderEngine();
providerEngine.addProvider(revertTraceSubprovider);
providerEngine.addProvider(new RpcSubprovider({rpcUrl: 'http://localhost:8545'}));
providerEngine.start();`}
</Code>
</Breakout>
</ContentBlock>
</Content>
</Base>
);
}
const root = document.getElementById('app');
if (root.hasChildNodes()) {
hydrate(<Profiler />, root);
} else {
render(<Profiler />, root);
}
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