Which mechanism allows context-free grammars to parse structured text formats with nested dependencies in compilers?

💡 Explanation

A pushdown automaton (PDA) uses stack operations to handle the recursive nature of context-free grammars, enabling parsing of nested structures. This is because the stack enables storing and retrieving states. Therefore, a PDA parses context-free languages, rather than a finite state machine's limited memory or a Turing machine's general computational abilities.

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