diff --git a/lib/engine.js b/lib/engine.js
new file mode 100644
index 0000000..dda00b5
--- /dev/null
+++ b/lib/engine.js
@@ -0,0 +1,37 @@
+// Generated by CoffeeScript 1.6.1
+(function() {
+  var fromFile, fs, parse, render, tumble;
+
+  tumble = require('./lexer').parse;
+
+  parse = require('./parser');
+
+  fs = require('fs');
+
+  render = function(str, options, callback) {
+    try {
+      return callback(null, parse(tumble(str), options));
+    } catch (err) {
+      return callback(err, null);
+    }
+  };
+
+  fromFile = function(path, options, callback) {
+    return fs.readFile(path, 'utf8', function(err, str) {
+      if (callback) {
+        if (err) {
+          return callback(err);
+        }
+        return callback(null, render(str, options, callback));
+      }
+      if (err) {
+        throw err;
+      }
+    });
+  };
+
+  fromFile.render = render;
+
+  module.exports = fromFile;
+
+}).call(this);
diff --git a/lib/lexer.js b/lib/lexer.js
new file mode 100644
index 0000000..9cc1dff
--- /dev/null
+++ b/lib/lexer.js
@@ -0,0 +1,850 @@
+module.exports = (function() {
+  /*
+   * Generated by PEG.js 0.7.0.
+   *
+   * http://pegjs.majda.cz/
+   */
+
+  function peg$subclass(child, parent) {
+    function ctor() { this.constructor = child; }
+    ctor.prototype = parent.prototype;
+    child.prototype = new ctor();
+  }
+
+  function SyntaxError(expected, found, offset, line, column) {
+    function buildMessage(expected, found) {
+      function stringEscape(s) {
+        function hex(ch) { return ch.charCodeAt(0).toString(16).toUpperCase(); }
+
+        return s
+          .replace(/\\/g,   '\\\\')
+          .replace(/"/g,    '\\"')
+          .replace(/\x08/g, '\\b')
+          .replace(/\t/g,   '\\t')
+          .replace(/\n/g,   '\\n')
+          .replace(/\f/g,   '\\f')
+          .replace(/\r/g,   '\\r')
+          .replace(/[\x00-\x07\x0B\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
+          .replace(/[\x10-\x1F\x80-\xFF]/g,    function(ch) { return '\\x'  + hex(ch); })
+          .replace(/[\u0180-\u0FFF]/g,         function(ch) { return '\\u0' + hex(ch); })
+          .replace(/[\u1080-\uFFFF]/g,         function(ch) { return '\\u'  + hex(ch); });
+      }
+
+      var expectedDesc, foundDesc;
+
+      switch (expected.length) {
+        case 0:
+          expectedDesc = "end of input";
+          break;
+
+        case 1:
+          expectedDesc = expected[0];
+          break;
+
+        default:
+          expectedDesc = expected.slice(0, -1).join(", ")
+            + " or "
+            + expected[expected.length - 1];
+      }
+
+      foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
+
+      return "Expected " + expectedDesc + " but " + foundDesc + " found.";
+    }
+
+    this.expected = expected;
+    this.found    = found;
+    this.offset   = offset;
+    this.line     = line;
+    this.column   = column;
+
+    this.name     = "SyntaxError";
+    this.message  = buildMessage(expected, found);
+  }
+
+  peg$subclass(SyntaxError, Error);
+
+  function parse(input) {
+    var options = arguments.length > 1 ? arguments[1] : {},
+
+        peg$startRuleFunctions = { document: peg$parsedocument },
+        peg$startRuleFunction  = peg$parsedocument,
+
+        peg$c0 = [],
+        peg$c1 = function(ps) { return { unit: "block", name: "document", content: ps }; },
+        peg$c2 = "tag_start",
+        peg$c3 = null,
+        peg$c4 = ":",
+        peg$c5 = "\":\"",
+        peg$c6 = function(b, n) { return is_valid_block_type(b); },
+        peg$c7 = "",
+        peg$c8 = function(b, n) { return {type: b, name: n }; },
+        peg$c9 = "/",
+        peg$c10 = "\"/\"",
+        peg$c11 = "tagname",
+        peg$c12 = /^[a-zA-Z]/,
+        peg$c13 = "[a-zA-Z]",
+        peg$c14 = function(t) { return t.join(''); },
+        peg$c15 = /^[a-zA-Z:\/]/,
+        peg$c16 = "[a-zA-Z:\\/]",
+        peg$c17 = "{",
+        peg$c18 = "\"{\"",
+        peg$c19 = "}",
+        peg$c20 = "\"}\"",
+        peg$c21 = "\n",
+        peg$c22 = "\"\\n\"",
+        peg$c23 = "\r\n",
+        peg$c24 = "\"\\r\\n\"",
+        peg$c25 = "\r",
+        peg$c26 = "\"\\r\"",
+        peg$c27 = "\u2028",
+        peg$c28 = "\"\\u2028\"",
+        peg$c29 = "\u2029",
+        peg$c30 = "\"\\u2029\"",
+        peg$c31 = "any character",
+        peg$c32 = function(c) {return c},
+        peg$c33 = function(bs) { return { unit: 'text', content: bs.join('') } },
+        peg$c34 = "variable",
+        peg$c35 = function(t) { return { unit: 'variable', name: t }; },
+        peg$c36 = function(t, ps, n) { return (t.type == n.type) && (t.name == n.name) },
+        peg$c37 = function(t, ps, n) { return {unit: 'block', type:t.type, name:t.name, content: ps } },
+
+        peg$currPos          = 0,
+        peg$reportedPos      = 0,
+        peg$cachedPos        = 0,
+        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },
+        peg$maxFailPos       = 0,
+        peg$maxFailExpected  = [],
+        peg$silentFails      = 0,
+
+        peg$result;
+
+    if ("startRule" in options) {
+      if (!(options.startRule in peg$startRuleFunctions)) {
+        throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
+      }
+
+      peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
+    }
+
+    function text() {
+      return input.substring(peg$reportedPos, peg$currPos);
+    }
+
+    function offset() {
+      return peg$reportedPos;
+    }
+
+    function line() {
+      return peg$computePosDetails(peg$reportedPos).line;
+    }
+
+    function column() {
+      return peg$computePosDetails(peg$reportedPos).column;
+    }
+
+    function peg$computePosDetails(pos) {
+      function advance(details, startPos, endPos) {
+        var p, ch;
+
+        for (p = startPos; p < endPos; p++) {
+          ch = input.charAt(p);
+          if (ch === "\n") {
+            if (!details.seenCR) { details.line++; }
+            details.column = 1;
+            details.seenCR = false;
+          } else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
+            details.line++;
+            details.column = 1;
+            details.seenCR = true;
+          } else {
+            details.column++;
+            details.seenCR = false;
+          }
+        }
+      }
+
+      if (peg$cachedPos !== pos) {
+        if (peg$cachedPos > pos) {
+          peg$cachedPos = 0;
+          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };
+        }
+        advance(peg$cachedPosDetails, peg$cachedPos, pos);
+        peg$cachedPos = pos;
+      }
+
+      return peg$cachedPosDetails;
+    }
+
+    function peg$fail(expected) {
+      if (peg$currPos < peg$maxFailPos) { return; }
+
+      if (peg$currPos > peg$maxFailPos) {
+        peg$maxFailPos = peg$currPos;
+        peg$maxFailExpected = [];
+      }
+
+      peg$maxFailExpected.push(expected);
+    }
+
+    function peg$cleanupExpected(expected) {
+      var i = 0;
+
+      expected.sort();
+
+      while (i < expected.length) {
+        if (expected[i - 1] === expected[i]) {
+          expected.splice(i, 1);
+        } else {
+          i++;
+        }
+      }
+    }
+
+    function peg$parsedocument() {
+      var s0, s1, s2;
+
+      s0 = peg$currPos;
+      s1 = [];
+      s2 = peg$parsepart();
+      while (s2 !== null) {
+        s1.push(s2);
+        s2 = peg$parsepart();
+      }
+      if (s1 !== null) {
+        peg$reportedPos = s0;
+        s1 = peg$c1(s1);
+      }
+      if (s1 === null) {
+        peg$currPos = s0;
+        s0 = s1;
+      } else {
+        s0 = s1;
+      }
+
+      return s0;
+    }
+
+    function peg$parsepart() {
+      var s0;
+
+      s0 = peg$parseblock();
+      if (s0 === null) {
+        s0 = peg$parsevariable();
+        if (s0 === null) {
+          s0 = peg$parsetext();
+        }
+      }
+
+      return s0;
+    }
+
+    function peg$parsetag_start() {
+      var s0, s1, s2, s3, s4, s5, s6;
+
+      peg$silentFails++;
+      s0 = peg$currPos;
+      s1 = peg$parseld();
+      if (s1 !== null) {
+        s2 = peg$parsetagname();
+        if (s2 !== null) {
+          if (input.charCodeAt(peg$currPos) === 58) {
+            s3 = peg$c4;
+            peg$currPos++;
+          } else {
+            s3 = null;
+            if (peg$silentFails === 0) { peg$fail(peg$c5); }
+          }
+          if (s3 !== null) {
+            s4 = peg$parsetagname();
+            if (s4 !== null) {
+              s5 = peg$parserd();
+              if (s5 !== null) {
+                peg$reportedPos = peg$currPos;
+                s6 = peg$c6(s2,s4);
+                if (s6) {
+                  s6 = peg$c7;
+                } else {
+                  s6 = peg$c3;
+                }
+                if (s6 !== null) {
+                  peg$reportedPos = s0;
+                  s1 = peg$c8(s2,s4);
+                  if (s1 === null) {
+                    peg$currPos = s0;
+                    s0 = s1;
+                  } else {
+                    s0 = s1;
+                  }
+                } else {
+                  peg$currPos = s0;
+                  s0 = peg$c3;
+                }
+              } else {
+                peg$currPos = s0;
+                s0 = peg$c3;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c3;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c3;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c3;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c3;
+      }
+      peg$silentFails--;
+      if (s0 === null) {
+        s1 = null;
+        if (peg$silentFails === 0) { peg$fail(peg$c2); }
+      }
+
+      return s0;
+    }
+
+    function peg$parsetag_end() {
+      var s0, s1, s2, s3, s4, s5, s6;
+
+      s0 = peg$currPos;
+      s1 = peg$parseld();
+      if (s1 !== null) {
+        if (input.charCodeAt(peg$currPos) === 47) {
+          s2 = peg$c9;
+          peg$currPos++;
+        } else {
+          s2 = null;
+          if (peg$silentFails === 0) { peg$fail(peg$c10); }
+        }
+        if (s2 !== null) {
+          s3 = peg$parsetagname();
+          if (s3 !== null) {
+            if (input.charCodeAt(peg$currPos) === 58) {
+              s4 = peg$c4;
+              peg$currPos++;
+            } else {
+              s4 = null;
+              if (peg$silentFails === 0) { peg$fail(peg$c5); }
+            }
+            if (s4 !== null) {
+              s5 = peg$parsetagname();
+              if (s5 !== null) {
+                s6 = peg$parserd();
+                if (s6 !== null) {
+                  peg$reportedPos = s0;
+                  s1 = peg$c8(s3,s5);
+                  if (s1 === null) {
+                    peg$currPos = s0;
+                    s0 = s1;
+                  } else {
+                    s0 = s1;
+                  }
+                } else {
+                  peg$currPos = s0;
+                  s0 = peg$c3;
+                }
+              } else {
+                peg$currPos = s0;
+                s0 = peg$c3;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c3;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c3;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c3;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c3;
+      }
+
+      return s0;
+    }
+
+    function peg$parsetagname() {
+      var s0, s1, s2;
+
+      peg$silentFails++;
+      s0 = peg$currPos;
+      s1 = [];
+      if (peg$c12.test(input.charAt(peg$currPos))) {
+        s2 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s2 = null;
+        if (peg$silentFails === 0) { peg$fail(peg$c13); }
+      }
+      if (s2 !== null) {
+        while (s2 !== null) {
+          s1.push(s2);
+          if (peg$c12.test(input.charAt(peg$currPos))) {
+            s2 = input.charAt(peg$currPos);
+            peg$currPos++;
+          } else {
+            s2 = null;
+            if (peg$silentFails === 0) { peg$fail(peg$c13); }
+          }
+        }
+      } else {
+        s1 = peg$c3;
+      }
+      if (s1 !== null) {
+        peg$reportedPos = s0;
+        s1 = peg$c14(s1);
+      }
+      if (s1 === null) {
+        peg$currPos = s0;
+        s0 = s1;
+      } else {
+        s0 = s1;
+      }
+      peg$silentFails--;
+      if (s0 === null) {
+        s1 = null;
+        if (peg$silentFails === 0) { peg$fail(peg$c11); }
+      }
+
+      return s0;
+    }
+
+    function peg$parsetag() {
+      var s0, s1, s2, s3, s4, s5, s6;
+
+      s0 = peg$currPos;
+      s1 = peg$parseld();
+      if (s1 !== null) {
+        s2 = [];
+        s3 = peg$currPos;
+        s4 = peg$currPos;
+        peg$silentFails++;
+        s5 = peg$parserd();
+        peg$silentFails--;
+        if (s5 === null) {
+          s4 = peg$c7;
+        } else {
+          peg$currPos = s4;
+          s4 = peg$c3;
+        }
+        if (s4 !== null) {
+          s5 = peg$currPos;
+          peg$silentFails++;
+          s6 = peg$parseeol();
+          peg$silentFails--;
+          if (s6 === null) {
+            s5 = peg$c7;
+          } else {
+            peg$currPos = s5;
+            s5 = peg$c3;
+          }
+          if (s5 !== null) {
+            if (peg$c15.test(input.charAt(peg$currPos))) {
+              s6 = input.charAt(peg$currPos);
+              peg$currPos++;
+            } else {
+              s6 = null;
+              if (peg$silentFails === 0) { peg$fail(peg$c16); }
+            }
+            if (s6 !== null) {
+              s4 = [s4, s5, s6];
+              s3 = s4;
+            } else {
+              peg$currPos = s3;
+              s3 = peg$c3;
+            }
+          } else {
+            peg$currPos = s3;
+            s3 = peg$c3;
+          }
+        } else {
+          peg$currPos = s3;
+          s3 = peg$c3;
+        }
+        if (s3 !== null) {
+          while (s3 !== null) {
+            s2.push(s3);
+            s3 = peg$currPos;
+            s4 = peg$currPos;
+            peg$silentFails++;
+            s5 = peg$parserd();
+            peg$silentFails--;
+            if (s5 === null) {
+              s4 = peg$c7;
+            } else {
+              peg$currPos = s4;
+              s4 = peg$c3;
+            }
+            if (s4 !== null) {
+              s5 = peg$currPos;
+              peg$silentFails++;
+              s6 = peg$parseeol();
+              peg$silentFails--;
+              if (s6 === null) {
+                s5 = peg$c7;
+              } else {
+                peg$currPos = s5;
+                s5 = peg$c3;
+              }
+              if (s5 !== null) {
+                if (peg$c15.test(input.charAt(peg$currPos))) {
+                  s6 = input.charAt(peg$currPos);
+                  peg$currPos++;
+                } else {
+                  s6 = null;
+                  if (peg$silentFails === 0) { peg$fail(peg$c16); }
+                }
+                if (s6 !== null) {
+                  s4 = [s4, s5, s6];
+                  s3 = s4;
+                } else {
+                  peg$currPos = s3;
+                  s3 = peg$c3;
+                }
+              } else {
+                peg$currPos = s3;
+                s3 = peg$c3;
+              }
+            } else {
+              peg$currPos = s3;
+              s3 = peg$c3;
+            }
+          }
+        } else {
+          s2 = peg$c3;
+        }
+        if (s2 !== null) {
+          s3 = peg$parserd();
+          if (s3 !== null) {
+            s1 = [s1, s2, s3];
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c3;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c3;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c3;
+      }
+
+      return s0;
+    }
+
+    function peg$parseld() {
+      var s0;
+
+      if (input.charCodeAt(peg$currPos) === 123) {
+        s0 = peg$c17;
+        peg$currPos++;
+      } else {
+        s0 = null;
+        if (peg$silentFails === 0) { peg$fail(peg$c18); }
+      }
+
+      return s0;
+    }
+
+    function peg$parserd() {
+      var s0;
+
+      if (input.charCodeAt(peg$currPos) === 125) {
+        s0 = peg$c19;
+        peg$currPos++;
+      } else {
+        s0 = null;
+        if (peg$silentFails === 0) { peg$fail(peg$c20); }
+      }
+
+      return s0;
+    }
+
+    function peg$parseeol() {
+      var s0;
+
+      if (input.charCodeAt(peg$currPos) === 10) {
+        s0 = peg$c21;
+        peg$currPos++;
+      } else {
+        s0 = null;
+        if (peg$silentFails === 0) { peg$fail(peg$c22); }
+      }
+      if (s0 === null) {
+        if (input.substr(peg$currPos, 2) === peg$c23) {
+          s0 = peg$c23;
+          peg$currPos += 2;
+        } else {
+          s0 = null;
+          if (peg$silentFails === 0) { peg$fail(peg$c24); }
+        }
+        if (s0 === null) {
+          if (input.charCodeAt(peg$currPos) === 13) {
+            s0 = peg$c25;
+            peg$currPos++;
+          } else {
+            s0 = null;
+            if (peg$silentFails === 0) { peg$fail(peg$c26); }
+          }
+          if (s0 === null) {
+            if (input.charCodeAt(peg$currPos) === 8232) {
+              s0 = peg$c27;
+              peg$currPos++;
+            } else {
+              s0 = null;
+              if (peg$silentFails === 0) { peg$fail(peg$c28); }
+            }
+            if (s0 === null) {
+              if (input.charCodeAt(peg$currPos) === 8233) {
+                s0 = peg$c29;
+                peg$currPos++;
+              } else {
+                s0 = null;
+                if (peg$silentFails === 0) { peg$fail(peg$c30); }
+              }
+            }
+          }
+        }
+      }
+
+      return s0;
+    }
+
+    function peg$parsetext() {
+      var s0, s1, s2, s3, s4;
+
+      s0 = peg$currPos;
+      s1 = [];
+      s2 = peg$currPos;
+      s3 = peg$currPos;
+      peg$silentFails++;
+      s4 = peg$parsetag();
+      peg$silentFails--;
+      if (s4 === null) {
+        s3 = peg$c7;
+      } else {
+        peg$currPos = s3;
+        s3 = peg$c3;
+      }
+      if (s3 !== null) {
+        if (input.length > peg$currPos) {
+          s4 = input.charAt(peg$currPos);
+          peg$currPos++;
+        } else {
+          s4 = null;
+          if (peg$silentFails === 0) { peg$fail(peg$c31); }
+        }
+        if (s4 !== null) {
+          peg$reportedPos = s2;
+          s3 = peg$c32(s4);
+          if (s3 === null) {
+            peg$currPos = s2;
+            s2 = s3;
+          } else {
+            s2 = s3;
+          }
+        } else {
+          peg$currPos = s2;
+          s2 = peg$c3;
+        }
+      } else {
+        peg$currPos = s2;
+        s2 = peg$c3;
+      }
+      if (s2 !== null) {
+        while (s2 !== null) {
+          s1.push(s2);
+          s2 = peg$currPos;
+          s3 = peg$currPos;
+          peg$silentFails++;
+          s4 = peg$parsetag();
+          peg$silentFails--;
+          if (s4 === null) {
+            s3 = peg$c7;
+          } else {
+            peg$currPos = s3;
+            s3 = peg$c3;
+          }
+          if (s3 !== null) {
+            if (input.length > peg$currPos) {
+              s4 = input.charAt(peg$currPos);
+              peg$currPos++;
+            } else {
+              s4 = null;
+              if (peg$silentFails === 0) { peg$fail(peg$c31); }
+            }
+            if (s4 !== null) {
+              peg$reportedPos = s2;
+              s3 = peg$c32(s4);
+              if (s3 === null) {
+                peg$currPos = s2;
+                s2 = s3;
+              } else {
+                s2 = s3;
+              }
+            } else {
+              peg$currPos = s2;
+              s2 = peg$c3;
+            }
+          } else {
+            peg$currPos = s2;
+            s2 = peg$c3;
+          }
+        }
+      } else {
+        s1 = peg$c3;
+      }
+      if (s1 !== null) {
+        peg$reportedPos = s0;
+        s1 = peg$c33(s1);
+      }
+      if (s1 === null) {
+        peg$currPos = s0;
+        s0 = s1;
+      } else {
+        s0 = s1;
+      }
+
+      return s0;
+    }
+
+    function peg$parsevariable() {
+      var s0, s1, s2, s3;
+
+      peg$silentFails++;
+      s0 = peg$currPos;
+      s1 = peg$parseld();
+      if (s1 !== null) {
+        s2 = peg$parsetagname();
+        if (s2 !== null) {
+          s3 = peg$parserd();
+          if (s3 !== null) {
+            peg$reportedPos = s0;
+            s1 = peg$c35(s2);
+            if (s1 === null) {
+              peg$currPos = s0;
+              s0 = s1;
+            } else {
+              s0 = s1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c3;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c3;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c3;
+      }
+      peg$silentFails--;
+      if (s0 === null) {
+        s1 = null;
+        if (peg$silentFails === 0) { peg$fail(peg$c34); }
+      }
+
+      return s0;
+    }
+
+    function peg$parseblock() {
+      var s0, s1, s2, s3, s4;
+
+      s0 = peg$currPos;
+      s1 = peg$parsetag_start();
+      if (s1 !== null) {
+        s2 = [];
+        s3 = peg$parsepart();
+        while (s3 !== null) {
+          s2.push(s3);
+          s3 = peg$parsepart();
+        }
+        if (s2 !== null) {
+          s3 = peg$parsetag_end();
+          if (s3 !== null) {
+            peg$reportedPos = peg$currPos;
+            s4 = peg$c36(s1,s2,s3);
+            if (s4) {
+              s4 = peg$c7;
+            } else {
+              s4 = peg$c3;
+            }
+            if (s4 !== null) {
+              peg$reportedPos = s0;
+              s1 = peg$c37(s1,s2,s3);
+              if (s1 === null) {
+                peg$currPos = s0;
+                s0 = s1;
+              } else {
+                s0 = s1;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c3;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c3;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c3;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c3;
+      }
+
+      return s0;
+    }
+
+
+        var _VALID_BLOCK_TYPES = ['if', 'when', 'template', 'many', 'block'];
+        var _VBT_LENGTH = _VALID_BLOCK_TYPES.length;
+
+        function is_valid_block_type(b) {
+            for(var i = 0; i < _VBT_LENGTH; i++) {
+                if (_VALID_BLOCK_TYPES[i] == b) {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+
+    peg$result = peg$startRuleFunction();
+
+    if (peg$result !== null && peg$currPos === input.length) {
+      return peg$result;
+    } else {
+      peg$cleanupExpected(peg$maxFailExpected);
+      peg$reportedPos = Math.max(peg$currPos, peg$maxFailPos);
+
+      throw new SyntaxError(
+        peg$maxFailExpected,
+        peg$reportedPos < input.length ? input.charAt(peg$reportedPos) : null,
+        peg$reportedPos,
+        peg$computePosDetails(peg$reportedPos).line,
+        peg$computePosDetails(peg$reportedPos).column
+      );
+    }
+  }
+
+  return {
+    SyntaxError: SyntaxError,
+    parse      : parse
+  };
+})();
diff --git a/lib/parser.js b/lib/parser.js
new file mode 100644
index 0000000..457bf25
--- /dev/null
+++ b/lib/parser.js
@@ -0,0 +1,174 @@
+// Generated by CoffeeScript 1.6.1
+(function() {
+  var Contexter, _;
+
+  _ = require('underscore');
+
+  Contexter = (function() {
+
+    function Contexter(content) {
+      this.content = content;
+      this.stack = [this.content];
+      this.templates = {};
+      this.depth = 0;
+    }
+
+    Contexter.prototype.has_any = function(name) {
+      return _.find(this.stack, function(o) {
+        return _.has(o, name);
+      });
+    };
+
+    Contexter.prototype.has_any_one = function(name) {
+      var p;
+      p = this.has_any(name);
+      if (p) {
+        return p[name];
+      } else {
+        return null;
+      }
+    };
+
+    Contexter.prototype.has = function(name) {
+      if (this.stack[0][name] != null) {
+        return this.stack[0][name];
+      } else {
+        return null;
+      }
+    };
+
+    Contexter.prototype.get = function(name, alt) {
+      var p;
+      if (alt == null) {
+        alt = '';
+      }
+      p = this.has_any_one(name);
+      if (p && (_.isString(p) || _.isNumber(p))) {
+        return p;
+      }
+      return this.render(name);
+    };
+
+    Contexter.prototype.once = function(obj, cb) {
+      var r;
+      this.stack.unshift(obj);
+      this.depth++;
+      if (this.depth > 10) {
+        throw new Error('recursion-error');
+      }
+      r = cb(this);
+      this.stack.shift();
+      this.depth--;
+      return r;
+    };
+
+    Contexter.prototype.when = function(name, cb) {
+      var p;
+      p = this.has_any_one(name);
+      if (p) {
+        return cb(this);
+      } else {
+        return '';
+      }
+    };
+
+    Contexter.prototype["if"] = function(name, cb) {
+      var p;
+      p = this.has(name);
+      if (p) {
+        return cb(this);
+      } else {
+        return '';
+      }
+    };
+
+    Contexter.prototype.block = function(name, cb) {
+      var p;
+      p = this.has_any_one(name);
+      if (p && _.isObject(p)) {
+        return this.once(p, cb);
+      } else {
+        return '';
+      }
+    };
+
+    Contexter.prototype.many = function(name, cb) {
+      var ps,
+        _this = this;
+      ps = this.has(name);
+      if (!(ps && _.isArray(ps))) {
+        return "";
+      }
+      return (_.map(ps, function(p) {
+        return _this.once(p, cb);
+      })).join('');
+    };
+
+    Contexter.prototype.template = function(name, cb) {
+      this.templates[name] = cb;
+      return "";
+    };
+
+    Contexter.prototype.render = function(name) {
+      var ret;
+      if ((this.templates[name] != null) && _.isFunction(this.templates[name])) {
+        this.depth++;
+        if (this.depth > 10) {
+          throw new Error('recursion-error');
+        }
+        ret = this.templates[name](this);
+        this.depth--;
+        return ret;
+      } else {
+        return "";
+      }
+    };
+
+    return Contexter;
+
+  })();
+
+  module.exports = function(ast, data) {
+    var cmd, context, o;
+    context = new Contexter(data);
+    cmd = function(o) {
+      switch (o.unit) {
+        case 'variable':
+          return function(context) {
+            return context.get(o.name);
+          };
+        case 'text':
+          return function(context) {
+            return o.content;
+          };
+        case 'block':
+          return function(context) {
+            return context[o.type](o.name, function(context) {
+              var p;
+              return ((function() {
+                var _i, _len, _ref, _results;
+                _ref = o.content;
+                _results = [];
+                for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+                  p = _ref[_i];
+                  _results.push(cmd(p)(context));
+                }
+                return _results;
+              })()).join("");
+            });
+          };
+      }
+    };
+    return ((function() {
+      var _i, _len, _ref, _results;
+      _ref = ast.content;
+      _results = [];
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        o = _ref[_i];
+        _results.push(cmd(o)(context));
+      }
+      return _results;
+    })()).join("");
+  };
+
+}).call(this);
diff --git a/lib/tumble.js b/lib/tumble.js
new file mode 100644
index 0000000..8b381e5
--- /dev/null
+++ b/lib/tumble.js
@@ -0,0 +1,20 @@
+// Generated by CoffeeScript 1.6.1
+(function() {
+  var engine, lexer, parse;
+
+  lexer = require('./lexer');
+
+  parse = require('./parser');
+
+  engine = require('./engine');
+
+  module.exports = {
+    tumble: lexer.parse,
+    parse: parse,
+    render: function(str, data) {
+      return parse(lexer.parse(str), data);
+    },
+    engine: engine
+  };
+
+}).call(this);