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I wrote:
A rule is matched based on the properties of the current node and the current values of context variables.
context variables are specific, then I thought it must be:
... the current values of the context variables.
But then I though when values have a the, I might not need to use another "the" for context variables.
Is there such a rule?!
What about the first part:
... current values of the context variables.
does values need the? why?
Your question is less about grammar and more about style. One common rule in good English style is to keep structures parallel when writing lists of things. For example, "Tomorrow I'm scheduled to meet my mother, visit the new art exhibit, and reconsider my life choices." All the verbs match tense, and the elements in the list are in the same general sentence structure.
In your example, you have "the properties of the current node" in the first part of the sentence, so in the second part "the current values of the context variables" feels more tidy.
Alternately you could write, "... the current node's properties and the context variables' current values." It doesn't matter which as long as all of the elements of the list match.
