LALR parser

An LALR parser (Look-Ahead LR parser) is a tool used in computer programming to analyze and understand code structure. It helps compilers determine if code follows correct syntax rules, especially for complex programming languages. LALR parsers are efficient because they combine the power of two parsing techniques, allowing them to handle many syntax rules with less memory and faster processing. Essentially, they read and interpret code step-by-step, predicting and confirming the structure, ensuring the code is valid before execution. This makes it essential for building reliable and efficient compilers.