Build Your Own Programming Language by Clinton L. Jeffery

Author:Clinton L. Jeffery [Jeffery, Clinton L.]
Language: eng
Format: epub, pdf
Tags: Parsing, Syntax Trees, Symbol Tables, Domain-Specific Languages, Code Generation, Bytecode Interpreters, Garbage Collectors, LLVM, Compiler engineering, Interpreters, C++ Programming, Java Programming, Data Structures and Algorithms
Publisher: Packt Publishing
Published: 2021-12-31T00:00:00+00:00

In this code, kids[1] is the MethodHeader node. Its stab field is the local symbol table being inserted as a subscope inside the enclosing class scope. The kids[1].kids[1] expression is the MethodReturnVal node, which is usually just the token denoting the return type. The pair of blank spaces separated by commas between "return" and the type are null values. They are being passed into the second and third parameters of the insert() symbol table. The corresponding Java code that is added to the populateSymTables() method in tree.java is as follows:

Kids[0].stab.insert(“return”, false, null, kids[0].kids[0].typ);

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