Table Of Contents

  

General Description

The Elixir AST discards column numbers, so we’ll have to work with the line numbers alone The main problem with this limitation is that we can’t distinguish two different function calls in the same line. We assume those cases will be rare and will make no attempt to fix this in the short term.

 
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use Amnesia

  

The Database

 
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defdatabase Guaxinim.Database do
 
    

Function definitions

 
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  deftable FunctionDefinition, [
 
        

Index, denormalized {module, function, arity}

 
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      :mfa,
 
        

Normalized module, function and arity

 
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      :m, :f, :a,
 
        

Is the function internal to the project?

 
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      :internal?,
 
        

If it is external, which package does it come from?

 
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      :package,
 
        

file and line of the first head of the definition

 
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      :file, :line,
 
        

Keyword used to define the function (:def, defp, defmacro, etc.)

 
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      :keyword,
 
        

Extra data we might decide to include

 
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      :meta],
    type: :ordered_set do
  end

    

Function Calls

 
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  deftable FunctionCall, [
 
        

Denormalized {function, file, line} tuple for faster queries

 
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      :f_file_line,
      :m, :f, :a,
 
        

Function/macro from which the function is called

 
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      :caller_mfa,
 
        

Module from which the function is called

 
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      :caller_module,
 
        

File and line. Note that we don’t have access to the column.

 
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      :file, :line],
    type: :ordered_set do

      
@doc

Lookup a function call by primary key.

 
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    def lookup_f_file_line!({f, file, line}) do
      read!({f, file, line})
    end
  end

    

Module Definitions

Still no use for this

 
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  deftable ModuleDefinition, [
    :m, :file, :line,
    :internal?, :package], type: :ordered_set do
  end

    

Module References (= aliases)

Still no use for this

 
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  deftable ModuleReference, [:m, :line], type: :ordered_set do
  end
end