Merge pull request #2087 from ethereum/Yul

Select Yul compiler

src/app/tabs/compileTab/compileTab.js

@@ -46,14 +46,20 @@ class CompileTab {
     this.compiler.setEvmVersion(this.evmVersion)
   }
 
+  /**
+   * Set the compiler to using Solidity or Yul (default to Solidity)
+   * @params lang {'Solidity' | 'Yul'} ...
+   */
+  setLanguage (lang) {
+    this.compiler.setLanguage(lang)
+  }
+
   /**
    * Compile a specific file of the file manager
    * @param {string} target the path to the file to compile
    */
   compileFile (target) {
     if (!target) throw new Error('No target provided for compiliation')
-    if (!/\.sol/.exec(target)) throw new Error(`${target} is not a solidity file. It cannot be compiled with solidity compiler`)
-    // only compile *.sol file.
     const provider = this.fileManager.fileProviderOf(target)
     if (!provider) throw new Error(`cannot compile ${target}. Does not belong to any explorer`)
     return new Promise((resolve, reject) => {

src/app/tabs/compileTab/compilerContainer.js

@@ -175,6 +175,17 @@ class CompilerContainer {
                 ${this._view.versionSelector}
               </div>
             </div>
+            <div class="row w-100 no-gutters mb-2">
+              <div class="col-sm-4">
+                <label class="input-group-text border-0" for="languageSelector">Language</label>
+              </div>
+              <div class="col-sm-8">
+              <select onchange="${this.onchangeLanguage.bind(this)}" class="custom-select" id="languageSelector">
+                <option>Solidity</option>
+                <option>Yul</option>
+              </select>
+              </div>
+            </div>
             <div class="row w-100 no-gutters">
               <div class="col-sm-4">
                 <label class="input-group-text border-0" for="evmVersionSelector">EVM Version</label>
@@ -227,6 +238,11 @@ class CompilerContainer {
     this.compileTabLogic.runCompiler()
   }
 
+  onchangeLanguage (event) {
+    this.compileTabLogic.setLanguage(event.target.value)
+    this.compile()
+  }
+
   onchangeEvmVersion (_) {
     let s = this._view.evmVersionSelector
     let v = s.value