Add support for partials and path segments for Handlebars.

This introduces support for some missing features to the Handlebars lexer:
Partials and path segments. Partials mostly appeared to work before, but the
`>` in `{{> ... }}` would appear as a syntax error, as could other
components of the partial. This change introduces support for:

* Standard partials: `{{> partialName}}`
* Partials with parameters: `{{> partialName varname="value"}}`
* Ddynamic partials: `{{> (partialFunc)}}`
* Ddynamic partials with lookups: `{{> (lookup ../path "partialName")}}`
* Partial blocks: `{{> @partial-block}}`
* Inline partials: `{{#*inline}}..{{/inline}}`

It also introduces support for path segments, which can reference content in
the current context or in a parent context. For instance, `this.name`,
`this/name`, `./name`, `../name`, `this/name`, etc. These are all now tracked
as variables.

1 files changed, 84 insertions, 0 deletions

diff --git a/tests/test_javascript.py b/tests/test_javascript.py
new file mode 100644
index 00000000..59890659
--- /dev/null
+++ b/tests/test_javascript.py
@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+"""
+    Javascript tests
+    ~~~~~~~~~~~~~~~~
+
+    :copyright: Copyright 2006-2015 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+import unittest
+
+from pygments.lexers import CoffeeScriptLexer
+from pygments.token import Token
+
+COFFEE_SLASH_GOLDEN = [
+    # input_str, slashes_are_regex_here
+    (r'/\\/', True),
+    (r'/\\/i', True),
+    (r'/\//', True),
+    (r'/(\s)/', True),
+    ('/a{2,8}/', True),
+    ('/b*c?d+/', True),
+    ('/(capture-match)/', True),
+    ('/(?:do-not-capture-match)/', True),
+    ('/this|or|that/', True),
+    ('/[char-set]/', True),
+    ('/[^neg-char_st]/', True),
+    ('/^.*$/', True),
+    (r'/\n(\f)\0\1\d\b\cm\u1234/', True),
+    (r'/^.?([^/\\\n\w]*)a\1+$/.something(or_other) # something more complex', True),
+    ("foo = (str) ->\n  /'|\"/.test str", True),
+    ('a = a / b / c', False),
+    ('a = a/b/c', False),
+    ('a = a/b/ c', False),
+    ('a = a /b/c', False),
+    ('a = 1 + /d/.test(a)', True),
+]
+
+def test_coffee_slashes():
+    for input_str, slashes_are_regex_here in COFFEE_SLASH_GOLDEN:
+        yield coffee_runner, input_str, slashes_are_regex_here
+
+def coffee_runner(input_str, slashes_are_regex_here):
+    lex = CoffeeScriptLexer()
+    output = list(lex.get_tokens(input_str))
+    print(output)
+    for t, s in output:
+        if '/' in s:
+            is_regex = t is Token.String.Regex
+            assert is_regex == slashes_are_regex_here, (t, s)
+
+class CoffeeTest(unittest.TestCase):
+    def setUp(self):
+        self.lexer = CoffeeScriptLexer()
+
+    def testMixedSlashes(self):
+        fragment = u'a?/foo/:1/2;\n'
+        tokens = [
+            (Token.Name.Other, u'a'),
+            (Token.Operator, u'?'),
+            (Token.Literal.String.Regex, u'/foo/'),
+            (Token.Operator, u':'),
+            (Token.Literal.Number.Integer, u'1'),
+            (Token.Operator, u'/'),
+            (Token.Literal.Number.Integer, u'2'),
+            (Token.Punctuation, u';'),
+            (Token.Text, u'\n'),
+        ]
+        self.assertEqual(tokens, list(self.lexer.get_tokens(fragment)))
+
+    def testBewareInfiniteLoop(self):
+        # This demonstrates the case that "This isn't really guarding" comment
+        # refers to.
+        fragment = '/a/x;\n'
+        tokens = [
+            (Token.Text, ''),
+            (Token.Operator, '/'),
+            (Token.Name.Other, 'a'),
+            (Token.Operator, '/'),
+            (Token.Name.Other, 'x'),
+            (Token.Punctuation, ';'),
+            (Token.Text, '\n'),
+        ]
+        self.assertEqual(tokens, list(self.lexer.get_tokens(fragment)))