Description: May be the most widely accepted model for the most classical works, Pascal language father, Turing Award winner Niklaus Wirth in his famous book Algorithms+ Data Structures = Programs Chapter 5 gives a recursive descent parser to achieve prediction. There is no doubt that it is written in Pascal. The compiler generates the target language is the p-code, a p-code virtual machine has three registers (program counter, the basic registers and stack registers) and 8 instructions (each instruction takes many forms).
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PL0.pas
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