As can be seen from the figure, the structure of the AST is very similar to the structure of the code. In fact, you can also regard the AST as a structured representation of the code. The subsequent work of the compiler or interpreter needs to depend on the AST, not the source code....
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Jay is an Open Source Compiler-Compiler tool derived from Berkeley Yacc. It is used in the Mono project as a Compiler-Compiler tool to generate the parser of the Mono C# compiler. Jay reads the grammar specification from a grammar file and generates an LR parser for it. Thiscs-parser.jay...
Whenever we use a higher-level language—such as C, Java, Ruby, or Go—we abstract away the actual code that is created and executed to perform the desired actions. We focus our development on “higher-level constructs,” allowing the compiler or interpreter to handle the details of ...