Grammar file reference#

These pages are generated from the .g4 files in packages/business/language/grammar. Each page keeps the source file, imports, complete rule or token inventory, grammar excerpts, examples, and authoring notes together.

Grammar source	Documentation page	Scope
`annotation.g4`	Annotation grammar	Annotation grammar describes metadata blocks and attribute lists that attach compiler-facing information to declarations.
`api.g4`	API grammar	API grammar describes HTTP-style integration declarations, endpoint methods, request and response shapes, and route bindings.
`app.g4`	App grammar	App grammar describes application declarations, pages, navigation, actions, layouts, and UI wiring at the application level.
`BusinessLanguage.g4`	Business Language grammar	The root parser composes every imported grammar module and defines the top-level program, declaration, statement, package, namespace, workspace, and configuration entry flow.
`BusinessLanguageLexer.g4`	Business Language Lexer grammar	The lexer defines the token vocabulary shared by every parser grammar, including keywords, operators, delimiters, identifiers, strings, numbers, comments, and whitespace.
`class.g4`	Class grammar	Class grammar describes object-style declarations, constructors, methods, fields, access modifiers, inheritance, and class members.
`common.g4`	Common grammar	Common grammar provides reusable identifiers, modifiers, blocks, simple statements, and shared punctuation patterns used by the rest of the parser.
`configuration.g4`	Configuration grammar	Configuration grammar describes minimal named configuration declarations used when policy values must be supplied as data instead of hardcoded logic.
`controls.g4`	Controls grammar	Controls grammar describes reusable UI controls and control properties that forms and app pages can compose.
`entity.g4`	Entity grammar	Entity grammar describes business entities, entity fields, keys, indexes, relations, and data lifecycle blocks.
`enum.g4`	Enum grammar	Enum grammar describes invariant named value sets used only when values should not vary by tenant, company, country, process, or time.
`error.g4`	Error grammar	Error grammar is the compatibility module for error declarations and imported error handling behavior.
`errorHandling.g4`	Error Handling grammar	Error handling grammar describes try, catch, finally, throw, raise, recover, and attempt flows for declared operational failures.
`expression.g4`	Expression grammar	Expression grammar describes precedence, assignment, calls, member access, conditions, lambdas, collection expressions, and other executable expressions.
`field.g4`	Field grammar	Field grammar describes reusable scalar fields, constraints, defaults, validation hooks, formatting hints, and field-level metadata.
`form.g4`	Form grammar	Form grammar describes form declarations, sections, fields, actions, validation bindings, and layout-oriented form members.
`function.g4`	Function grammar	Function grammar describes function signatures, parameters, return types, block bodies, expression bodies, and query bodies.
`iac.g4`	IaC grammar	Infrastructure grammar describes program, resource, and deployment declarations used to model deployable runtime resources.
`interface.g4`	Interface grammar	Interface grammar describes contracts, method signatures, properties, events, type parameters, and interface inheritance.
`literal.g4`	Literal grammar	Literal grammar describes strings, numbers, booleans, nulls, arrays, maps, date-like values, money values, and structured literals.
`message.g4`	Message grammar	Message grammar describes declared user-facing messages, severities, parameters, localization blocks, and message catalogs.
`module.g4`	Module grammar	Module grammar describes imports, exports, aliases, packages, namespaces, and module-level dependency boundaries.
`program.g4`	Program grammar	Program grammar is the compatibility module for program-level declarations imported by the root grammar.
`query.g4`	Query grammar	Query grammar describes SQL-like select, insert, update, delete, save, merge, joins, grouping, ordering, and DDL statements.
`rule.g4`	Rule grammar	Rule grammar describes executable business rules with typed parameters, return types, and block bodies.
`service.g4`	Service grammar	Service grammar describes service declarations, operations, endpoints, dependencies, and service-level configuration.
`source_ui.g4`	Source UI grammar	Source UI grammar is the compatibility module for source-authored UI declarations imported by the root grammar.
`struct.g4`	Struct grammar	Struct grammar is the compatibility module for structured type declarations imported by the root grammar.
`subscription.g4`	Subscription grammar	Subscription grammar is the compatibility module for lifecycle subscription declarations imported by the root grammar.
`table.g4`	Table grammar	Table grammar describes tables, table fields, keys, indexes, relations, storage metadata, audit policy, and constraints.
`test.g4`	Test grammar	Test grammar describes test declarations, fixtures, setup blocks, assertions, and expected error paths.
`type.g4`	Type grammar	Type grammar describes primitive types, references, generics, optionals, arrays, maps, unions, intersections, and function types.
`validation.g4`	Validation grammar	Validation grammar describes validation declarations, validation rules, conditions, severity, targets, and declared message use.