Compiling Modules and Packages: A Deep Dive, Study notes of Computer Science

Download Compiling Modules and Packages: A Deep Dive and more Study notes Computer Science in PDF only on Docsity! 1 of 5 Compiling Modules & Packages What do we find in a module or package declaration? • A name and components, like in a record • Components declared in a new name space • Components may include procedures and functions The module/package declares an instance, not a template Compilation challenges • Incomplete declarations • Procedure headers • Opaque and private types • Specification/body separation 2 of 5 Semantic Processing for Modules/Packages The AST node for a package will include: • The name • A pointer to a component list • In Ada, optionally a pointer to the private part , which is just another component list Semantic processing for a package AST node: • Put the name in the symbol table as a package name • Create a new symbol table • Declare all of the components in that symbol table What kind of names are the components? • Components in the private part must not be externally visible If there is a separate package body AST node: • Make sure the body is not already defined • Add body components to the symbol table, making sure they are not visible externally • Match procedures/functions in the body with headers declared as part of the interface