sajson - Lightweight, extremely high-performance JSON parser for C++11

sajson is an extremely high-performance, in-place, DOM-style JSON parser written in C++. Originally, sajson meant Single Allocation JSON, but it now supports dynamic allocation too. sajson parses an input document into a contiguous AST structure. Unlike some other high-performance JSON parsers, the AST is efficiently queryable. Object lookups by key are O(lg N) and array indexing is O(1).