Implement a YAML Parser

Approach 1: Recursive Descent with an Explicit Line Index The YAML structure maps naturally to nested containers — objects (mappings) and arrays (lists). A recursive parser can mirror that nesting: at each level of indentation we call a function that reads key/value pairs or list items until the indentation drops below the expected amount. This keeps the code close to the grammar and makes the flow easy to follow. Consider the input The outermost mapping database is read…