ast.hpp File Reference

Abstract syntax tree (AST) definitions for the query language. More...

Classes
struct	oxy::core::metadata::AllOfExpr
	Logical AND across expression-level nodes. More...
struct	oxy::core::metadata::AllOfValue
	Logical AND across value-level nodes. More...
struct	oxy::core::metadata::AnyOfExpr
	Logical OR across expression-level nodes. More...
struct	oxy::core::metadata::AnyOfValue
	Logical OR across value-level nodes. More...
struct	oxy::core::metadata::ExprNode
	Variant for expression-level boolean expressions. More...
struct	oxy::core::metadata::FieldCondition
	A single field comparison against one or more values. More...
struct	oxy::core::metadata::NotExpr
	Logical negation of an expression-level node. More...
struct	oxy::core::metadata::NotValue
	Logical negation of a value-level node. More...
struct	oxy::core::metadata::Value
	A single scalar token appearing as a value in the query. More...
struct	oxy::core::metadata::ValueNode
	Variant for value-level boolean expressions. More...

Namespaces
namespace	oxy
	This root namespace contains the common types and operations for the OXY-API library.
namespace	oxy::core
	This namespace contains core types and operations for the OXY-API library.

Enumerations
enum class	oxy::core::metadata::CompareOp {   Eq , Ne , Lt , Le ,   Gt , Ge , Like }
	Comparison operators supported by the query language. More...

Detailed Description

Abstract syntax tree (AST) definitions for the query language.

The AST models two levels of boolean expressions:

• Expression-level (field conditions combined with AND/OR/NOT)
• Value-level (values combined with AND/OR/NOT for a single field/operator)

The grammar supports:

• Dotted/quoted field paths (e.g., user."first-name")
• Operators: = (alias :), !=, <, <=, >, >=, like
• Parentheses and boolean composition with and/or/not

This header contains only data types; parsing and SQL emission live elsewhere.

Enumeration Type Documentation

CompareOp

enum class oxy::core::metadata::CompareOp

strong

Comparison operators supported by the query language.

Enumerator
Eq	Equality, written as '=' or ':' in the query
Ne	Inequality, '!='
Lt	Less-than, '<'
Le	Less-than-or-equal, '<='
Gt	Greater-than, '>'
Ge	Greater-than-or-equal, '>='
Like	String match using SQL LIKE semantics