differ v0.1.1 Differ.Patchable protocol View Source
Allows to apply diff to a term
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Link to this section Types
Link to this section Functions
Link to this function
perform(old_val, op, new_val)
View Sourceperform(t(), Differ.Diffable.operation(), tuple()) :: {:ok, {term(), any()}} | {:error, reason()} | {:conflict, any()}
perform(t(), {term(), :diff, Differ.Diffable.diff()}, tuple()) :: {:diff, Differ.Diffable.diff(), term(), {term(), :ins}}
Performs operation op on term
First argument is original term. Second is operation, that get matched against functions in implementations. Third is a tuple, where first item should be result of the operation, and second is anything else.
Function should return tuple with :ok atom and tuple {result, anything}
Link to this function
revert_op(val, op)
View Sourcerevert_op(t(), Differ.Diffable.operation()) :: {:ok, Differ.Diffable.operation()} | {:error, reason()}
Returns the opposite of operation
If operation is not revertable, should return {:error, reason}
Examples
iex> Differ.diffable.revert("", {:del, "ttypo"})
{:ok, {:ins, "ttypo"}}
iex> Differ.diffable.revert("", {:remove, 10})
{:error, "Operation is not revertable"}