add hw2

node_modules/highlight.js/lib/languages/java.js

@@ -0,0 +1,181 @@
+// https://docs.oracle.com/javase/specs/jls/se15/html/jls-3.html#jls-3.10
+var decimalDigits = '[0-9](_*[0-9])*';
+var frac = `\\.(${decimalDigits})`;
+var hexDigits = '[0-9a-fA-F](_*[0-9a-fA-F])*';
+var NUMERIC = {
+  className: 'number',
+  variants: [
+    // DecimalFloatingPointLiteral
+    // including ExponentPart
+    { begin: `(\\b(${decimalDigits})((${frac})|\\.)?|(${frac}))` +
+      `[eE][+-]?(${decimalDigits})[fFdD]?\\b` },
+    // excluding ExponentPart
+    { begin: `\\b(${decimalDigits})((${frac})[fFdD]?\\b|\\.([fFdD]\\b)?)` },
+    { begin: `(${frac})[fFdD]?\\b` },
+    { begin: `\\b(${decimalDigits})[fFdD]\\b` },
+
+    // HexadecimalFloatingPointLiteral
+    { begin: `\\b0[xX]((${hexDigits})\\.?|(${hexDigits})?\\.(${hexDigits}))` +
+      `[pP][+-]?(${decimalDigits})[fFdD]?\\b` },
+
+    // DecimalIntegerLiteral
+    { begin: '\\b(0|[1-9](_*[0-9])*)[lL]?\\b' },
+
+    // HexIntegerLiteral
+    { begin: `\\b0[xX](${hexDigits})[lL]?\\b` },
+
+    // OctalIntegerLiteral
+    { begin: '\\b0(_*[0-7])*[lL]?\\b' },
+
+    // BinaryIntegerLiteral
+    { begin: '\\b0[bB][01](_*[01])*[lL]?\\b' },
+  ],
+  relevance: 0
+};
+
+/*
+Language: Java
+Author: Vsevolod Solovyov <vsevolod.solovyov@gmail.com>
+Category: common, enterprise
+Website: https://www.java.com/
+*/
+
+function java(hljs) {
+  var JAVA_IDENT_RE = '[\u00C0-\u02B8a-zA-Z_$][\u00C0-\u02B8a-zA-Z_$0-9]*';
+  var GENERIC_IDENT_RE = JAVA_IDENT_RE + '(<' + JAVA_IDENT_RE + '(\\s*,\\s*' + JAVA_IDENT_RE + ')*>)?';
+  var KEYWORDS = 'false synchronized int abstract float private char boolean var static null if const ' +
+    'for true while long strictfp finally protected import native final void ' +
+    'enum else break transient catch instanceof byte super volatile case assert short ' +
+    'package default double public try this switch continue throws protected public private ' +
+    'module requires exports do';
+
+  var ANNOTATION = {
+    className: 'meta',
+    begin: '@' + JAVA_IDENT_RE,
+    contains: [
+      {
+        begin: /\(/,
+        end: /\)/,
+        contains: ["self"] // allow nested () inside our annotation
+      },
+    ]
+  };
+  const NUMBER = NUMERIC;
+
+  return {
+    name: 'Java',
+    aliases: ['jsp'],
+    keywords: KEYWORDS,
+    illegal: /<\/|#/,
+    contains: [
+      hljs.COMMENT(
+        '/\\*\\*',
+        '\\*/',
+        {
+          relevance: 0,
+          contains: [
+            {
+              // eat up @'s in emails to prevent them to be recognized as doctags
+              begin: /\w+@/, relevance: 0
+            },
+            {
+              className: 'doctag',
+              begin: '@[A-Za-z]+'
+            }
+          ]
+        }
+      ),
+      // relevance boost
+      {
+        begin: /import java\.[a-z]+\./,
+        keywords: "import",
+        relevance: 2
+      },
+      hljs.C_LINE_COMMENT_MODE,
+      hljs.C_BLOCK_COMMENT_MODE,
+      hljs.APOS_STRING_MODE,
+      hljs.QUOTE_STRING_MODE,
+      {
+        className: 'class',
+        beginKeywords: 'class interface enum', end: /[{;=]/, excludeEnd: true,
+        // TODO: can this be removed somehow?
+        // an extra boost because Java is more popular than other languages with
+        // this same syntax feature (this is just to preserve our tests passing
+        // for now)
+        relevance: 1,
+        keywords: 'class interface enum',
+        illegal: /[:"\[\]]/,
+        contains: [
+          { beginKeywords: 'extends implements' },
+          hljs.UNDERSCORE_TITLE_MODE
+        ]
+      },
+      {
+        // Expression keywords prevent 'keyword Name(...)' from being
+        // recognized as a function definition
+        beginKeywords: 'new throw return else',
+        relevance: 0
+      },
+      {
+        className: 'class',
+        begin: 'record\\s+' + hljs.UNDERSCORE_IDENT_RE + '\\s*\\(',
+        returnBegin: true,
+        excludeEnd: true,
+        end: /[{;=]/,
+        keywords: KEYWORDS,
+        contains: [
+          { beginKeywords: "record" },
+          {
+            begin: hljs.UNDERSCORE_IDENT_RE + '\\s*\\(',
+            returnBegin: true,
+            relevance: 0,
+            contains: [hljs.UNDERSCORE_TITLE_MODE]
+          },
+          {
+            className: 'params',
+            begin: /\(/, end: /\)/,
+            keywords: KEYWORDS,
+            relevance: 0,
+            contains: [
+              hljs.C_BLOCK_COMMENT_MODE
+            ]
+          },
+          hljs.C_LINE_COMMENT_MODE,
+          hljs.C_BLOCK_COMMENT_MODE
+        ]
+      },
+      {
+        className: 'function',
+        begin: '(' + GENERIC_IDENT_RE + '\\s+)+' + hljs.UNDERSCORE_IDENT_RE + '\\s*\\(', returnBegin: true, end: /[{;=]/,
+        excludeEnd: true,
+        keywords: KEYWORDS,
+        contains: [
+          {
+            begin: hljs.UNDERSCORE_IDENT_RE + '\\s*\\(', returnBegin: true,
+            relevance: 0,
+            contains: [hljs.UNDERSCORE_TITLE_MODE]
+          },
+          {
+            className: 'params',
+            begin: /\(/, end: /\)/,
+            keywords: KEYWORDS,
+            relevance: 0,
+            contains: [
+              ANNOTATION,
+              hljs.APOS_STRING_MODE,
+              hljs.QUOTE_STRING_MODE,
+              NUMBER,
+              hljs.C_BLOCK_COMMENT_MODE
+            ]
+          },
+          hljs.C_LINE_COMMENT_MODE,
+          hljs.C_BLOCK_COMMENT_MODE
+        ]
+      },
+      NUMBER,
+      ANNOTATION
+    ]
+  };
+}
+
+module.exports = java;