2 files changed, 242 insertions, 0 deletions

diff --git a/imports/codemirror/mode/go/go.js b/imports/codemirror/mode/go/go.js
new file mode 100644
index 00000000..00e5d6c2
--- /dev/null
+++ b/imports/codemirror/mode/go/go.js
@@ -0,0 +1,170 @@
+CodeMirror.defineMode("go", function(config, parserConfig) {
+  var indentUnit = config.indentUnit;
+
+  var keywords = {
+    "break":true, "case":true, "chan":true, "const":true, "continue":true,
+    "default":true, "defer":true, "else":true, "fallthrough":true, "for":true,
+    "func":true, "go":true, "goto":true, "if":true, "import":true,
+    "interface":true, "map":true, "package":true, "range":true, "return":true,
+    "select":true, "struct":true, "switch":true, "type":true, "var":true,
+    "bool":true, "byte":true, "complex64":true, "complex128":true,
+    "float32":true, "float64":true, "int8":true, "int16":true, "int32":true,
+    "int64":true, "string":true, "uint8":true, "uint16":true, "uint32":true,
+    "uint64":true, "int":true, "uint":true, "uintptr":true
+  };
+
+  var atoms = {
+    "true":true, "false":true, "iota":true, "nil":true, "append":true,
+    "cap":true, "close":true, "complex":true, "copy":true, "imag":true,
+    "len":true, "make":true, "new":true, "panic":true, "print":true,
+    "println":true, "real":true, "recover":true
+  };
+
+  var blockKeywords = {
+    "else":true, "for":true, "func":true, "if":true, "interface":true,
+    "select":true, "struct":true, "switch":true
+  };
+
+  var isOperatorChar = /[+\-*&^%:=<>!|\/]/;
+
+  var curPunc;
+
+  function tokenBase(stream, state) {
+    var ch = stream.next();
+    if (ch == '"' || ch == "'" || ch == "`") {
+      state.tokenize = tokenString(ch);
+      return state.tokenize(stream, state);
+    }
+    if (/[\d\.]/.test(ch)) {
+      if (ch == ".") {
+        stream.match(/^[0-9]+([eE][\-+]?[0-9]+)?/);
+      } else if (ch == "0") {
+        stream.match(/^[xX][0-9a-fA-F]+/) || stream.match(/^0[0-7]+/);
+      } else {
+        stream.match(/^[0-9]*\.?[0-9]*([eE][\-+]?[0-9]+)?/);
+      }
+      return "number";
+    }
+    if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
+      curPunc = ch;
+      return null
+    }
+    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 (cur == "case" || cur == "default") curPunc = "case";
+      return "keyword";
+    }
+    if (atoms.propertyIsEnumerable(cur)) return "atom";
+    return "word";
+  }
+
+  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 || quote == "`"))
+        state.tokenize = tokenBase;
+      return "string";
+    };
+  }
+
+  function tokenComment(stream, state) {
+    var maybeEnd = false, ch;
+    while (ch = stream.next()) {
+      if (ch == "/" && maybeEnd) {
+        state.tokenize = tokenBase;
+        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) {
+    return state.context = new Context(state.indented, 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 (ctx.type == "case") ctx.type = "}";
+      }
+      if (stream.eatSpace()) return null;
+      curPunc = null;
+      var style = (state.tokenize || tokenBase)(stream, state);
+      if (style == "comment") return style;
+      if (ctx.align == null) ctx.align = true;
+
+      if (curPunc == "{") pushContext(state, stream.column(), "}");
+      else if (curPunc == "[") pushContext(state, stream.column(), "]");
+      else if (curPunc == "(") pushContext(state, stream.column(), ")");
+      else if (curPunc == "case") ctx.type = "case"
+      else if (curPunc == "}" && ctx.type == "}") ctx = popContext(state);
+      else if (curPunc == ctx.type) popContext(state);
+      state.startOfLine = false;
+      return style;
+    },
+
+    indent: function(state, textAfter) {
+      if (state.tokenize != tokenBase && state.tokenize != null) return 0;
+      var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
+      if (ctx.type == "case" && /^(?:case|default)\b/.test(textAfter)) {
+        state.context.type = "}";
+        return ctx.indented;
+      }
+      var closing = firstChar == ctx.type;
+      if (ctx.align) return ctx.column + (closing ? 0 : 1);
+      else return ctx.indented + (closing ? 0 : indentUnit);
+    },
+
+    electricChars: "{}:"
+  };
+});
+
+CodeMirror.defineMIME("text/x-go", "go");
diff --git a/imports/codemirror/mode/go/index.html b/imports/codemirror/mode/go/index.html
new file mode 100644
index 00000000..9cdad1ad
--- /dev/null
+++ b/imports/codemirror/mode/go/index.html
@@ -0,0 +1,72 @@
+<!doctype html>
+<html>
+  <head>
+    <title>CodeMirror: Go mode</title>
+    <link rel="stylesheet" href="../../lib/codemirror.css">
+    <link rel="stylesheet" href="../../theme/elegant.css">
+    <script src="../../lib/codemirror.js"></script>
+    <script src="go.js"></script>
+    <link rel="stylesheet" href="../../doc/docs.css">
+    <style>.CodeMirror {border:1px solid #999; background:#ffc}</style>
+  </head>
+  <body>
+    <h1>CodeMirror: Go mode</h1>
+
+<form><textarea id="code" name="code">
+// Prime Sieve in Go.
+// Taken from the Go specification.
+// Copyright © The Go Authors.
+
+package main
+
+import "fmt"
+
+// Send the sequence 2, 3, 4, ... to channel 'ch'.
+func generate(ch chan&lt;- int) {
+        for i := 2; ; i++ {
+                ch &lt;- i  // Send 'i' to channel 'ch'
+        }
+}
+
+// Copy the values from channel 'src' to channel 'dst',
+// removing those divisible by 'prime'.
+func filter(src &lt;-chan int, dst chan&lt;- int, prime int) {
+        for i := range src {    // Loop over values received from 'src'.
+                if i%prime != 0 {
+                        dst &lt;- i  // Send 'i' to channel 'dst'.
+                }
+        }
+}
+
+// The prime sieve: Daisy-chain filter processes together.
+func sieve() {
+        ch := make(chan int)  // Create a new channel.
+        go generate(ch)       // Start generate() as a subprocess.
+        for {
+                prime := &lt;-ch
+                fmt.Print(prime, "\n")
+                ch1 := make(chan int)
+                go filter(ch, ch1, prime)
+                ch = ch1
+        }
+}
+
+func main() {
+        sieve()
+}
+</textarea></form>
+
+    <script>
+      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
+        theme: "elegant",
+        matchBrackets: true,
+        indentUnit: 8,
+        tabSize: 8,
+        indentWithTabs: true,
+        mode: "text/x-go"
+      });
+    </script>