option for generating metadata

src/app/files/compiler-metadata.js

@@ -13,6 +13,7 @@ class CompilerMetadata {
     var self = this
     self._events.compiler.register('compilationFinished', (success, data, source) => {
       if (!success) return
+      if (!self._opts.config.get('settings/generate-contract-metadata')) return
       var provider = self._opts.fileManager.currentFileProvider()
       var path = self._opts.fileManager.currentPath()
       if (provider && path) {
@@ -71,6 +72,7 @@ class CompilerMetadata {
           var fileName = path + '/' + contractName + '.json'
           provider.get(fileName, (error, content) => {
             if (error) return callback(error)
+            if (!content) return callback()
             try {
               var metadata = JSON.parse(content)
               return callback(null, metadata[name + ':' + id] || metadata[name] || metadata[id] || metadata[name.toLowerCase() + ':' + id] || metadata[name.toLowerCase()])

src/app/panels/file-panel.js

@@ -68,7 +68,8 @@ function filepanel (localRegistry) {
     },
     {
       fileManager: self._deps.fileManager,
-      compiler: self._deps.compiler
+      compiler: self._deps.compiler,
+      config: self._deps.config
     }
   )
   self._compilerMetadata.syncContractMetadata()

src/app/tabs/run-tab.js

@@ -397,6 +397,7 @@ function contractDropdown (events, self) {
             self._deps.udapp.runTx(data, runTxCallback)
           })
         } else {
+          if (Object.keys(selectedContract.contract.object.evm.bytecode.linkReferences).length) self._deps.logCallback(`linking ${JSON.stringify(selectedContract.contract.object.evm.bytecode.linkReferences, null, '\t')} using ${JSON.stringify(contractMetadata.linkReferences, null, '\t')}`)
           txFormat.encodeConstructorCallAndLinkLibraries(selectedContract.contract.object, args, constructor, contractMetadata.linkReferences, selectedContract.contract.object.evm.bytecode.linkReferences, (error, data) => {
             createInstanceCallback(error, selectedContract, data)
           })

src/app/tabs/settings-tab.js

@@ -26,7 +26,7 @@ module.exports = class SettingsTab {
     }
     self._view = { /* eslint-disable */
       el: null,
-      optionVM: null, personal: null, warnPersonalMode: null,
+      optionVM: null, personal: null, warnPersonalMode: null, generateContractMetadata: null,
       pluginInput: null, versionSelector: null, version: null,
       theme: { dark: null, light: null },
       plugins: {},
@@ -62,6 +62,8 @@ module.exports = class SettingsTab {
     It is not recommended (and also most likely not relevant) to use this mode with an injected provider (Mist, Metamask, ...) or with JavaScript VM.
     Remix never persist any passphrase.`.split('\n').map(s => s.trim()).join(' ')
     self._view.warnPersonalMode = yo`<i title=${warnText} class="${css.icon} fa fa-exclamation-triangle" aria-hidden="true"></i>`
+    self._view.generateContractMetadata = yo`<input onchange=${onchangeGenerateContractMetadata} id="generatecontractmetadata" type="checkbox">`
+    if (self._deps.config.get('settings/generate-contract-metadata')) self._view.generateContractMetadata.setAttribute('checked', '')
     self._view.pluginInput = yo`<textarea rows="4" cols="70" id="plugininput" type="text" class="${css.pluginTextArea}" ></textarea>`
 
     self._view.theme.light = yo`<input onchange=${onswitch2lightTheme} class="${css.col1}" name="theme" id="themeLight" type="radio">`
@@ -72,6 +74,10 @@ module.exports = class SettingsTab {
       <div class="${css.info}">
           <div class=${css.title}>General settings</div>
           <div class="${css.crow}">
+            <div>${self._view.generateContractMetadata}</div>
+            <span class="${css.checkboxText}">Generate contract metadata. Generate a JSON file in the contract folder. Allows to specify library addresses the contract depends on. If nothing is specified, Remix deploy libraries automatically.</span>
+          </div>
+          <div class="${css.crow}">
             <div>${self._view.optionVM}</div>
             <span class="${css.checkboxText}">Always use Ethereum VM at Load</span>
           </div>
@@ -176,6 +182,9 @@ module.exports = class SettingsTab {
       loadPlugins([json], {removable: true})
     }
 
+    function onchangeGenerateContractMetadata (event) {
+      self._deps.config.set('settings/generate-contract-metadata', !self._deps.config.get('settings/generate-contract-metadata'))
+    }
     function onchangeOption (event) {
       self._deps.config.set('settings/always-use-vm', !self._deps.config.get('settings/always-use-vm'))
     }