Use CodeMirror for WebTry snippets.

experimental/webtry/res/js/cm/clike.js

Index: experimental/webtry/res/js/cm/clike.js
diff --git a/experimental/webtry/res/js/cm/clike.js b/experimental/webtry/res/js/cm/clike.js
new file mode 100644
index 0000000000000000000000000000000000000000..60b88bf1aa462334ab6becfd3078e7345be88f92
--- /dev/null
+++ b/experimental/webtry/res/js/cm/clike.js
@@ -0,0 +1,436 @@
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+"use strict";
+
+CodeMirror.defineMode("clike", function(config, parserConfig) {
+  var indentUnit = config.indentUnit,
+      statementIndentUnit = parserConfig.statementIndentUnit || indentUnit,
+      dontAlignCalls = parserConfig.dontAlignCalls,
+      keywords = parserConfig.keywords || {},
+      builtin = parserConfig.builtin || {},
+      blockKeywords = parserConfig.blockKeywords || {},
+      atoms = parserConfig.atoms || {},
+      hooks = parserConfig.hooks || {},
+      multiLineStrings = parserConfig.multiLineStrings;
+  var isOperatorChar = /[+\-*&%=<>!?|\/]/;
+
+  var curPunc;
+
+  function tokenBase(stream, state) {
+    var ch = stream.next();
+    if (hooks[ch]) {
+      var result = hooks[ch](stream, state);
+      if (result !== false) return result;
+    }
+    if (ch == '"' || ch == "'") {
+      state.tokenize = tokenString(ch);
+      return state.tokenize(stream, state);
+    }
+    if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
+      curPunc = ch;
+      return null;
+    }
+    if (/\d/.test(ch)) {
+      stream.eatWhile(/[\w\.]/);
+      return "number";
+    }
+    if (ch == "/") {
+      if (stream.eat("*")) {
+        state.tokenize = tokenComment;
+        return tokenComment(stream, state);
+      }
+      if (stream.eat("/")) {
+        stream.skipToEnd();
+        return "comment";
+      }
+    }
+    if (isOperatorChar.test(ch)) {
+      stream.eatWhile(isOperatorChar);
+      return "operator";
+    }
+    stream.eatWhile(/[\w\$_]/);
+    var cur = stream.current();
+    if (keywords.propertyIsEnumerable(cur)) {
+      if (blockKeywords.propertyIsEnumerable(cur)) curPunc = "newstatement";
+      return "keyword";
+    }
+    if (builtin.propertyIsEnumerable(cur)) {
+      if (blockKeywords.propertyIsEnumerable(cur)) curPunc = "newstatement";
+      return "builtin";
+    }
+    if (atoms.propertyIsEnumerable(cur)) return "atom";
+    return "variable";
+  }
+
+  function tokenString(quote) {
+    return function(stream, state) {
+      var escaped = false, next, end = false;
+      while ((next = stream.next()) != null) {
+        if (next == quote && !escaped) {end = true; break;}
+        escaped = !escaped && next == "\\";
+      }
+      if (end || !(escaped || multiLineStrings))
+        state.tokenize = null;
+      return "string";
+    };
+  }
+
+  function tokenComment(stream, state) {
+    var maybeEnd = false, ch;
+    while (ch = stream.next()) {
+      if (ch == "/" && maybeEnd) {
+        state.tokenize = null;
+        break;
+      }
+      maybeEnd = (ch == "*");
+    }
+    return "comment";
+  }
+
+  function Context(indented, column, type, align, prev) {
+    this.indented = indented;
+    this.column = column;
+    this.type = type;
+    this.align = align;
+    this.prev = prev;
+  }
+  function pushContext(state, col, type) {
+    var indent = state.indented;
+    if (state.context && state.context.type == "statement")
+      indent = state.context.indented;
+    return state.context = new Context(indent, col, type, null, state.context);
+  }
+  function popContext(state) {
+    var t = state.context.type;
+    if (t == ")" || t == "]" || t == "}")
+      state.indented = state.context.indented;
+    return state.context = state.context.prev;
+  }
+
+  // Interface
+
+  return {
+    startState: function(basecolumn) {
+      return {
+        tokenize: null,
+        context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
+        indented: 0,
+        startOfLine: true
+      };
+    },
+
+    token: function(stream, state) {
+      var ctx = state.context;
+      if (stream.sol()) {
+        if (ctx.align == null) ctx.align = false;
+        state.indented = stream.indentation();
+        state.startOfLine = true;
+      }
+      if (stream.eatSpace()) return null;
+      curPunc = null;
+      var style = (state.tokenize || tokenBase)(stream, state);
+      if (style == "comment" || style == "meta") return style;
+      if (ctx.align == null) ctx.align = true;
+
+      if ((curPunc == ";" || curPunc == ":" || curPunc == ",") && ctx.type == "statement") popContext(state);
+      else if (curPunc == "{") pushContext(state, stream.column(), "}");
+      else if (curPunc == "[") pushContext(state, stream.column(), "]");
+      else if (curPunc == "(") pushContext(state, stream.column(), ")");
+      else if (curPunc == "}") {
+        while (ctx.type == "statement") ctx = popContext(state);
+        if (ctx.type == "}") ctx = popContext(state);
+        while (ctx.type == "statement") ctx = popContext(state);
+      }
+      else if (curPunc == ctx.type) popContext(state);
+      else if (((ctx.type == "}" || ctx.type == "top") && curPunc != ';') || (ctx.type == "statement" && curPunc == "newstatement"))
+        pushContext(state, stream.column(), "statement");
+      state.startOfLine = false;
+      return style;
+    },
+
+    indent: function(state, textAfter) {
+      if (state.tokenize != tokenBase && state.tokenize != null) return CodeMirror.Pass;
+      var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
+      if (ctx.type == "statement" && firstChar == "}") ctx = ctx.prev;
+      var closing = firstChar == ctx.type;
+      if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : statementIndentUnit);
+      else if (ctx.align && (!dontAlignCalls || ctx.type != ")")) return ctx.column + (closing ? 0 : 1);
+      else if (ctx.type == ")" && !closing) return ctx.indented + statementIndentUnit;
+      else return ctx.indented + (closing ? 0 : indentUnit);
+    },
+
+    electricChars: "{}",
+    blockCommentStart: "/*",
+    blockCommentEnd: "*/",
+    lineComment: "//",
+    fold: "brace"
+  };
+});
+
+  function words(str) {
+    var obj = {}, words = str.split(" ");
+    for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
+    return obj;
+  }
+  var cKeywords = "auto if break int case long char register continue return default short do sizeof " +
+    "double static else struct entry switch extern typedef float union for unsigned " +
+    "goto while enum void const signed volatile";
+
+  function cppHook(stream, state) {
+    if (!state.startOfLine) return false;
+    for (;;) {
+      if (stream.skipTo("\\")) {
+        stream.next();
+        if (stream.eol()) {
+          state.tokenize = cppHook;
+          break;
+        }
+      } else {
+        stream.skipToEnd();
+        state.tokenize = null;
+        break;
+      }
+    }
+    return "meta";
+  }
+
+  function cpp11StringHook(stream, state) {
+    stream.backUp(1);
+    // Raw strings.
+    if (stream.match(/(R|u8R|uR|UR|LR)/)) {
+      var match = stream.match(/"(.{0,16})\(/);
+      if (!match) {
+        return false;
+      }
+      state.cpp11RawStringDelim = match[1];
+      state.tokenize = tokenRawString;
+      return tokenRawString(stream, state);
+    }
+    // Unicode strings/chars.
+    if (stream.match(/(u8|u|U|L)/)) {
+      if (stream.match(/["']/, /* eat */ false)) {
+        return "string";
+      }
+      return false;
+    }
+    // Ignore this hook.
+    stream.next();
+    return false;
+  }
+
+  // C#-style strings where "" escapes a quote.
+  function tokenAtString(stream, state) {
+    var next;
+    while ((next = stream.next()) != null) {
+      if (next == '"' && !stream.eat('"')) {
+        state.tokenize = null;
+        break;
+      }
+    }
+    return "string";
+  }
+
+  // C++11 raw string literal is <prefix>"<delim>( anything )<delim>", where
+  // <delim> can be a string up to 16 characters long.
+  function tokenRawString(stream, state) {
+    var closingSequence = new RegExp(".*?\\)" + state.cpp11RawStringDelim + '"');
+    var match = stream.match(closingSequence);
+    if (match) {
+      state.tokenize = null;
+    } else {
+      stream.skipToEnd();
+    }
+    return "string";
+  }
+
+  function def(mimes, mode) {
+    if (typeof mimes == "string") mimes = [mimes];
+    var words = [];
+    function add(obj) {
+      if (obj) for (var prop in obj) if (obj.hasOwnProperty(prop))
+        words.push(prop);
+    }
+    add(mode.keywords);
+    add(mode.builtin);
+    add(mode.atoms);
+    if (words.length) {
+      mode.helperType = mimes[0];
+      CodeMirror.registerHelper("hintWords", mimes[0], words);
+    }
+
+    for (var i = 0; i < mimes.length; ++i)
+      CodeMirror.defineMIME(mimes[i], mode);
+  }
+
+  def(["text/x-csrc", "text/x-c", "text/x-chdr"], {
+    name: "clike",
+    keywords: words(cKeywords),
+    blockKeywords: words("case do else for if switch while struct"),
+    atoms: words("null"),
+    hooks: {"#": cppHook},
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+  def(["text/x-c++src", "text/x-c++hdr"], {
+    name: "clike",
+    keywords: words(cKeywords + " asm dynamic_cast namespace reinterpret_cast try bool explicit new " +
+                    "static_cast typeid catch operator template typename class friend private " +
+                    "this using const_cast inline public throw virtual delete mutable protected " +
+                    "wchar_t alignas alignof constexpr decltype nullptr noexcept thread_local final " +
+                    "static_assert override"),
+    blockKeywords: words("catch class do else finally for if struct switch try while"),
+    atoms: words("true false null"),
+    hooks: {
+      "#": cppHook,
+      "u": cpp11StringHook,
+      "U": cpp11StringHook,
+      "L": cpp11StringHook,
+      "R": cpp11StringHook
+    },
+    modeProps: {fold: ["brace", "include"]}
+  });
+  def("text/x-java", {
+    name: "clike",
+    keywords: words("abstract assert boolean break byte case catch char class const continue default " +
+                    "do double else enum extends final finally float for goto if implements import " +
+                    "instanceof int interface long native new package private protected public " +
+                    "return short static strictfp super switch synchronized this throw throws transient " +
+                    "try void volatile while"),
+    blockKeywords: words("catch class do else finally for if switch try while"),
+    atoms: words("true false null"),
+    hooks: {
+      "@": function(stream) {
+        stream.eatWhile(/[\w\$_]/);
+        return "meta";
+      }
+    },
+    modeProps: {fold: ["brace", "import"]}
+  });
+  def("text/x-csharp", {
+    name: "clike",
+    keywords: words("abstract as base break case catch checked class const continue" +
+                    " default delegate do else enum event explicit extern finally fixed for" +
+                    " foreach goto if implicit in interface internal is lock namespace new" +
+                    " operator out override params private protected public readonly ref return sealed" +
+                    " sizeof stackalloc static struct switch this throw try typeof unchecked" +
+                    " unsafe using virtual void volatile while add alias ascending descending dynamic from get" +
+                    " global group into join let orderby partial remove select set value var yield"),
+    blockKeywords: words("catch class do else finally for foreach if struct switch try while"),
+    builtin: words("Boolean Byte Char DateTime DateTimeOffset Decimal Double" +
+                    " Guid Int16 Int32 Int64 Object SByte Single String TimeSpan UInt16 UInt32" +
+                    " UInt64 bool byte char decimal double short int long object"  +
+                    " sbyte float string ushort uint ulong"),
+    atoms: words("true false null"),
+    hooks: {
+      "@": function(stream, state) {
+        if (stream.eat('"')) {
+          state.tokenize = tokenAtString;
+          return tokenAtString(stream, state);
+        }
+        stream.eatWhile(/[\w\$_]/);
+        return "meta";
+      }
+    }
+  });
+  def("text/x-scala", {
+    name: "clike",
+    keywords: words(
+
+      /* scala */
+      "abstract case catch class def do else extends false final finally for forSome if " +
+      "implicit import lazy match new null object override package private protected return " +
+      "sealed super this throw trait try trye type val var while with yield _ : = => <- <: " +
+      "<% >: # @ " +
+
+      /* package scala */
+      "assert assume require print println printf readLine readBoolean readByte readShort " +
+      "readChar readInt readLong readFloat readDouble " +
+
+      "AnyVal App Application Array BufferedIterator BigDecimal BigInt Char Console Either " +
+      "Enumeration Equiv Error Exception Fractional Function IndexedSeq Integral Iterable " +
+      "Iterator List Map Numeric Nil NotNull Option Ordered Ordering PartialFunction PartialOrdering " +
+      "Product Proxy Range Responder Seq Serializable Set Specializable Stream StringBuilder " +
+      "StringContext Symbol Throwable Traversable TraversableOnce Tuple Unit Vector :: #:: " +
+
+      /* package java.lang */
+      "Boolean Byte Character CharSequence Class ClassLoader Cloneable Comparable " +
+      "Compiler Double Exception Float Integer Long Math Number Object Package Pair Process " +
+      "Runtime Runnable SecurityManager Short StackTraceElement StrictMath String " +
+      "StringBuffer System Thread ThreadGroup ThreadLocal Throwable Triple Void"
+
+
+    ),
+    blockKeywords: words("catch class do else finally for forSome if match switch try while"),
+    atoms: words("true false null"),
+    hooks: {
+      "@": function(stream) {
+        stream.eatWhile(/[\w\$_]/);
+        return "meta";
+      }
+    }
+  });
+  def(["x-shader/x-vertex", "x-shader/x-fragment"], {
+    name: "clike",
+    keywords: words("float int bool void " +
+                    "vec2 vec3 vec4 ivec2 ivec3 ivec4 bvec2 bvec3 bvec4 " +
+                    "mat2 mat3 mat4 " +
+                    "sampler1D sampler2D sampler3D samplerCube " +
+                    "sampler1DShadow sampler2DShadow" +
+                    "const attribute uniform varying " +
+                    "break continue discard return " +
+                    "for while do if else struct " +
+                    "in out inout"),
+    blockKeywords: words("for while do if else struct"),
+    builtin: words("radians degrees sin cos tan asin acos atan " +
+                    "pow exp log exp2 sqrt inversesqrt " +
+                    "abs sign floor ceil fract mod min max clamp mix step smootstep " +
+                    "length distance dot cross normalize ftransform faceforward " +
+                    "reflect refract matrixCompMult " +
+                    "lessThan lessThanEqual greaterThan greaterThanEqual " +
+                    "equal notEqual any all not " +
+                    "texture1D texture1DProj texture1DLod texture1DProjLod " +
+                    "texture2D texture2DProj texture2DLod texture2DProjLod " +
+                    "texture3D texture3DProj texture3DLod texture3DProjLod " +
+                    "textureCube textureCubeLod " +
+                    "shadow1D shadow2D shadow1DProj shadow2DProj " +
+                    "shadow1DLod shadow2DLod shadow1DProjLod shadow2DProjLod " +
+                    "dFdx dFdy fwidth " +
+                    "noise1 noise2 noise3 noise4"),
+    atoms: words("true false " +
+                "gl_FragColor gl_SecondaryColor gl_Normal gl_Vertex " +
+                "gl_MultiTexCoord0 gl_MultiTexCoord1 gl_MultiTexCoord2 gl_MultiTexCoord3 " +
+                "gl_MultiTexCoord4 gl_MultiTexCoord5 gl_MultiTexCoord6 gl_MultiTexCoord7 " +
+                "gl_FogCoord " +
+                "gl_Position gl_PointSize gl_ClipVertex " +
+                "gl_FrontColor gl_BackColor gl_FrontSecondaryColor gl_BackSecondaryColor " +
+                "gl_TexCoord gl_FogFragCoord " +
+                "gl_FragCoord gl_FrontFacing " +
+                "gl_FragColor gl_FragData gl_FragDepth " +
+                "gl_ModelViewMatrix gl_ProjectionMatrix gl_ModelViewProjectionMatrix " +
+                "gl_TextureMatrix gl_NormalMatrix gl_ModelViewMatrixInverse " +
+                "gl_ProjectionMatrixInverse gl_ModelViewProjectionMatrixInverse " +
+                "gl_TexureMatrixTranspose gl_ModelViewMatrixInverseTranspose " +
+                "gl_ProjectionMatrixInverseTranspose " +
+                "gl_ModelViewProjectionMatrixInverseTranspose " +
+                "gl_TextureMatrixInverseTranspose " +
+                "gl_NormalScale gl_DepthRange gl_ClipPlane " +
+                "gl_Point gl_FrontMaterial gl_BackMaterial gl_LightSource gl_LightModel " +
+                "gl_FrontLightModelProduct gl_BackLightModelProduct " +
+                "gl_TextureColor gl_EyePlaneS gl_EyePlaneT gl_EyePlaneR gl_EyePlaneQ " +
+                "gl_FogParameters " +
+                "gl_MaxLights gl_MaxClipPlanes gl_MaxTextureUnits gl_MaxTextureCoords " +
+                "gl_MaxVertexAttribs gl_MaxVertexUniformComponents gl_MaxVaryingFloats " +
+                "gl_MaxVertexTextureImageUnits gl_MaxTextureImageUnits " +
+                "gl_MaxFragmentUniformComponents gl_MaxCombineTextureImageUnits " +
+                "gl_MaxDrawBuffers"),
+    hooks: {"#": cppHook},
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+});