solidity syntax highlighting

js/background.js

@@ -56,6 +56,7 @@
     r:           ['r'],
     ruby:        ['rakefile', 'gemfile', 'rb'],
     scala:       ['scala', 'scl', 'sca', 'scb'],
+    solidity:    ['sol'],
     scss:        ['scss', 'sass'],
     smalltalk:   ['st', 'sm', 'sll'],
     sml:         ['sml'],

js/languages/solidity.js

@@ -0,0 +1,92 @@
+/*
+Language: Solidity
+Author: Your Name <[email protected]>
+Description: language definition for Solidity programming language used for developing smart contracts on the Ethereum blockchain
+Website: https://soliditylang.org/
+Category: common, blockchain
+*/
+
+hljs.registerLanguage('solidity', function(hljs) {
+  var NUMBER = {className: 'number', relevance: 0, variants: [
+    {begin: '\\b(0[bB][01]+)'}, // binary
+    {begin: '\\b(0[oO][0-7]+)'}, // octal
+    {begin: '\\b(0[xX][0-9a-fA-F]+)'}, // hex
+    {begin: '\\b([0-9]+(\\.[0-9]+)?([eE][+-]?[0-9]+)?)'} // decimal
+  ]};
+  var KEYWORDS = {
+    keyword:
+      'pragma return assembly break continue do else for if import ' +
+      'new try catch throw while emit event mapping struct enum ' +
+      'constructor modifier function selfdestruct payable view pure ' +
+      'constant external public private internal indexed memory storage ' +
+      'function view payable returns',
+    built_in:
+      'assert require revert block coinbase difficulty gaslimit ' +
+      'gasprice number timestamp tx blockhash'
+  };
+  return {
+    aliases: ['solidity', 'sol'],
+    case_insensitive: true,
+    keywords: KEYWORDS,
+    contains: [
+      hljs.C_LINE_COMMENT_MODE,
+      hljs.C_BLOCK_COMMENT_MODE,
+      hljs.QUOTE_STRING_MODE,
+      hljs.APOS_STRING_MODE,
+      {
+        className: 'string',
+        begin: '"""', end: '"""',
+        relevance: 10
+      },
+      NUMBER,
+      {
+        className: 'meta',
+        begin: '^\\s*#', end: '$',
+        contains: [
+          {
+            className: 'meta-string',
+            variants: [
+              { begin: /<.*?>/ },
+              { begin: /\".*\"/ },
+              { begin: /\'.*\'/ }
+            ]
+          }
+        ]
+      },
+      {
+        className: 'function',
+        beginKeywords: 'function', end: /\{/, excludeEnd: true,
+        illegal: /\[|%/,
+        contains: [
+          hljs.TITLE_MODE,
+          {
+            className: 'params',
+            begin: /\(/, end: /\)/,
+            excludeBegin: true,
+            excludeEnd: true,
+            contains: [
+              hljs.SELF_CONTAINED,
+              {
+                className: 'param',
+                begin: /(\b[a-zA-Z_$][\w$]*)\s*:/, end: /,/,
+                returnBegin: true, excludeEnd: true
+              }
+            ]
+          }
+        ]
+      },
+      {
+        className: 'class',
+        beginKeywords: 'contract interface', end: /\{/, excludeEnd: true,
+        contains: [
+          hljs.TITLE_MODE,
+          {
+            className: 'inheritance',
+            begin: /is/, end: /(\s|\{|$)/,
+            keywords: {keyword: 'is'}
+          }
+        ]
+      }
+    ]
+  };
+})