top-down parser
[tɑp daʊn ˈpɑrsər]
nounpl: top-down parsers
analisador sintático descendente
1. A parsing algorithm that begins with the start symbol and attempts to derive the input string by recursively expanding non-terminals according to grammar rules, working from the top of the parse tree downward
The compiler uses a top-down parser to analyze the source code starting from the program's main rule.
O compilador usa um analisador sintático descendente para analisar o código-fonte começando pela regra principal do programa.
2. A parser that starts with the root of the parse tree and expands nodes until it matches the input tokens
Top-down parsers are easier to understand and implement compared to bottom-up parsers for certain grammar types.
Os analisadores sintáticos descendentes são mais fáceis de compreender e implementar em comparação com analisadores ascendentes para certos tipos de gramática.
This is specialized technical terminology used universally in computer science. In Brazil, it appears in university computer science curricula and compiler design courses. The term is typically not adapted to colloquial speech and remains consistent across Portuguese-speaking regions. Tech companies in São Paulo and Rio de Janeiro often use the English term interchangeably with the Portuguese translation in technical documentation.
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