Tape Machine (#30)

Adds a tape machine way of executing the code.
The tape machine is a series of FunctionCall objects, which can either be called one by one, or be used to generate expressions to make up a function.

Reviewed-on: Rubydragon/MetagraphOptimization.jl#30
Co-authored-by: Anton Reinhard <anton.reinhard@proton.me>
Co-committed-by: Anton Reinhard <anton.reinhard@proton.me>

docs/src/lib/internals/code_gen.md

@@ -1,8 +1,23 @@
 # Code Generation
 
-## Main
+## Types
 ```@autodocs
 Modules = [MetagraphOptimization]
-Pages = ["code_gen/main.jl"]
+Pages = ["code_gen/type.jl"]
+Order = [:type, :constant, :function]
+```
+
+## Function Generation
+Implementations for generation of a callable function. A function generated this way cannot immediately be called. One Julia World Age has to pass before this is possible, which happens when the global Julia scope advances. If the DAG and therefore the generated function becomes too large, use the tape machine instead, since compiling large functions becomes infeasible.
+```@autodocs
+Modules = [MetagraphOptimization]
+Pages = ["code_gen/function.jl"]
+Order = [:function]
+```
+
+## Tape Machine
+```@autodocs
+Modules = [MetagraphOptimization]
+Pages = ["code_gen/tabe_machine.jl"]
 Order = [:function]
 ```

docs/src/lib/internals/scheduler.md

@@ -7,6 +7,13 @@ Pages = ["scheduler/interface.jl"]
 Order   = [:type, :function]
 ```
 
+## Types
+```@autodocs
+Modules = [MetagraphOptimization]
+Pages = ["scheduler/type.jl"]
+Order   = [:type, :function]
+```
+
 ## Greedy
 ```@autodocs
 Modules = [MetagraphOptimization]

docs/src/lib/internals/task.md

@@ -34,10 +34,3 @@ Modules = [MetagraphOptimization]
 Pages = ["task/properties.jl"]
 Order   = [:function]
 ```
-
-## Print
-```@autodocs
-Modules = [MetagraphOptimization]
-Pages = ["task/print.jl"]
-Order   = [:function]
-```