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17.4 API Description ¶

C or C++ code for an extension must include the header file gawkapi.h, which declares the functions and defines the data types used to communicate with gawk. This (rather large) section describes the API in detail.

• Introduction
• General-Purpose Data Types
• Memory Allocation Functions and Convenience Macros
• Constructor Functions
• Managing MPFR and GMP Values
• Registration Functions
• Printing Messages
• Updating ERRNO
• Requesting Values
• Accessing and Updating Parameters
• Symbol Table Access
• Array Manipulation
• Accessing and Manipulating Redirections
• API Variables
• Boilerplate Code
• Changes From Version 1 of the API