jsoncc - JSON Compiler Compiler

Jsoncc generates C code that maps C structures to JSON and vice versa.

The specification format looks similar to JSON. See tst/test.x for an example.

Features

• Types: integer, real, boolean, string, object, array and any.
• Decoding of json into a predefined structure.
• Encoding of a structure into json.
• Validation according to the specification.
  • Objects may contain unused members.
  • Optional members can be specified using the question mark.

Limitations

• Member names have the same restrictions as C variable names.
• All members of an array must be of the same type.
• Only ASCII is supported.

TODO

• Support static arrays (foo: int[42] fails as is).
• Reject duplicates
• Do something about 'nil'
• Add 'any' arrays
• Add 'object' arrays
• Add array-arrays

Dependencies:

• Lua/LuaJIT 5.1. Note: The generated code does NOT depend on Lua.
• gcc/clang

Implementation Details

The generated parser is a recursive descent parser that writes its results straight into the structure, so a structure that does not contain any strings does not require any memory allocation. The parser uses the lexer found in jslex.c, so you must link to the lexer.