Predictive parsing is a top-down parsing technique used in syntax analysis of compilers, which predicts the structure of the input string by using a lookahead symbol to decide which production rule to apply. It relies on a predictive parser table, often constructed using a context-free grammar, to ensure efficient and accurate parsing without backtracking.

Predictive Parsing

Predictive parsing

top-down parsing technique

syntax analysis of compilers

Input string structure

lookahead symbol

A production rule is a fundamental component of formal grammar systems, used to describe how symbols in a language can be transformed or rewritten. It is essential in defining the syntax of programming languages and plays a critical role in parsing and compiling processes.

production rule

predictive parser table

Context-Free Grammar (CFG) is a formal system used to define the syntax of programming languages and natural languages, characterized by production rules that replace a single non-terminal symbol with a string of non-terminal and terminal symbols. CFGs are powerful enough to describe many language constructs while allowing efficient parsing algorithms, making them essential in compiler design and language processing.

context-free grammar

Efficient parsing

accurate parsing

Backtracking is an algorithmic technique for solving problems incrementally by trying partial solutions and then abandoning them if they do not lead to a complete solution. It is particularly useful in solving constraint satisfaction problems, combinatorial optimization problems, and puzzles like the N-Queens problem or Sudoku.

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