Crate yaml_database_schema_parser 

USEFUL LINKS
This crate on crates.io Documentation on docs.rs PURPOSE
The parser uses the Pest library to define grammar rules that interpret specific .yaml structures. It parses:

• Schema name
• Tables within the schema
• Columns their types and modes within each table

The parsed data can be used to generate structured representation of database schemas for your application. GRAMMAR

1. WHITESPACE and NEWLINE Handle whitespace and line breaks for flexibility in formatting.
2. file Represents the entire schema file, containing a schema definition.
3. schema_section Defines the overall structure of the schema, including tables.
4. schema_entry Defines the name of the schema and the list of tables.
5. table_section Contains one or more table definitions (table_entry).
6. table_entry Defines a table with a name and its columns.
7. column_section Lists one or more column definitions (column_entry).
8. column_entry Describes the properties of a single column, including type and mode.
9. column_type Specifies the data type for a column.
10. column_mode Specifies whether a column is nullable, required, or repeated.
11. column_type_value Defines valid data types for columns.
12. column_mode_value Defines valid modes for columns.
13. identifier Defines valid identifiers for schema, table, and column names.

Structs

Column

Represents a column within a table, including its type and mode.

Schema

Represents a database schema containing multiple tables.

Table

Represents a table within the schema, containing a list of columns.

YAMLParser

The main YAML parser for database schema files. This parser reads and validates YAML files that define a database schema structure, including schema name, tables, and columns.

Enums

Rule

SchemaErr

Enum for handling errors during schema parsing.

Functions

parse_columns

Parses a column_section from the input, returning a list of Column structs.

parse_schema

Parses a YAML string into a Schema structure.

parse_tables

Parses a table_section from the input, returning a list of Table structs.