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, 152 insertions, 0 deletions

diff --git a/tests/examplefiles/example.monkey b/tests/examplefiles/example.monkey
new file mode 100644
index 00000000..facd3a73
--- /dev/null
+++ b/tests/examplefiles/example.monkey
@@ -0,0 +1,152 @@
+Strict
+
+' single line comment
+
+#rem
+multi
+line
+comment
+#end
+
+#rem
+nested
+#rem
+multi
+line
+#end
+comment
+#end
+
+Import mojo
+
+Const ONECONST:Int = 1
+Const TWOCONST := 2
+Const THREECONST := 3, FOURCONST:Int = 4
+
+Global someVariable:Int = 4
+
+' sample class from the documentation
+Class Game Extends App
+
+    Function New()
+    End
+
+    Function DrawSpiral(clock)
+        Local w=DeviceWidth/2
+        For Local i#=0 Until w*1.5 Step .2
+            Local x#,y#
+            x=w+i*Sin(i*3+clock)
+            y=w+i*Cos(i*2+clock)
+            DrawRect  x,y,1,1
+        Next
+        hitbox.Collide(event.pos)
+    End
+
+    Field updateCount
+
+    Method OnCreate()
+        Print "spiral"
+
+        SetUpdateRate 60
+    End
+
+    Method OnUpdate()
+        updateCount+=1
+    End
+
+    Method OnRender()
+        Cls
+        DrawSpiral updateCount
+        DrawSpiral updateCount*1.1
+    End
+
+End
+
+Class Enemy
+  Method Die () Abstract
+End
+
+' extending
+Class Hoodlum Extends Enemy
+    ' field
+    Field testField:Bool = True
+
+    ' naming class with modulepath
+    Local currentNode:list.Node<Vector2D>
+
+    Method Die ()
+        Print "B'oss, he-- he killed me, b'oss!"
+    End
+End
+
+' extending with generics
+Class VectorNode Extends Node<Vector2D>
+End
+
+' interfaces
+Interface Computer
+  Method Boot ()
+  Method Process ()
+  Method Display ()
+End
+
+Class PC Implements Computer
+End
+
+' array syntax
+Global listOfStuff:String[42]
+Global lessStuff:String[5] = listOfStuff[4..8]
+Global oneStuff:String = listOfStuff[23]
+
+'a comma separated sequence
+Global scores:Int[]=[10,20,30]
+'a comma separated sequence
+Global text:String[]=["Hello","There","World"]
+Global worstCase:worst.List<String[]>
+
+' string type
+Global string1:String = "Hello world"
+Global string2$ = "Hello world"
+
+' escape characers in strings
+Global string3 := "Hello~zWorld"
+Global string4 := "~qHello World~q"
+Global string5 := "~tIndented~n"
+Global string6 := "tilda is wavey... ~~"
+
+' string pseudofunctions
+Print "  Hello World  ~n".Trim()    ' prints "Hello World"
+Print "Hello World".ToUpper()       ' prints "HELLO WORLD"
+
+' Boolean shorttype
+Global boolVariable1:Bool = True
+Global boolVariable2? = False
+
+' number formats
+Global hexNum1:Int = $3d0dead
+Global hexNum2% = $CAFEBABE
+
+Global floatNum1:Float = 3.141516
+Global floatNum2# = 3.141516
+Global floatNum3 := .141516
+
+' preprocessor keywords
+#If TARGET = "android"
+DoStuff()
+#ElseIf TARGET = "ios"
+DoOtherStuff()
+#End
+
+' preprocessor variable
+#SOMETHING = True
+#Print SOMETHING
+#If SOMETHING
+#End
+
+' operators
+Global a = 32
+Global b = 32 ~ 0
+b ~= 16
+b |= 16
+b &= 16
+Global c = a | b