ast

type ActionStatement struct {
	Action              token.Token // token.ACTION
	Name                token.Token // token.IDENT
	ExpressionStatement Statement
}

type EntityStatement struct {
	Entity             token.Token // token.ENTITY
	Name               token.Token // token.IDENT
	RelationStatements []Statement
	ActionStatements   []Statement
}

type Expression interface {
	Node

	IsInfix() bool
	GetType() ExpressionType
	// contains filtered or unexported methods
}

type ExpressionStatement struct {
	Expression Expression
}

type ExpressionType string

type Identifier struct {
	Prefix token.Token
	Idents []token.Token // token.IDENT
}

type InfixExpression struct {
	Op       token.Token // The operator token, e.g. and, or
	Left     Expression
	Operator Operator
	Right    Expression
}

type Node interface {
	String() string
}

type Operator string

type RelationStatement struct {
	Relation      token.Token // token.RELATION
	Name          token.Token // token.IDENT
	RelationTypes []RelationTypeStatement
}

type RelationTypeStatement struct {
	Sign     token.Token // token.SIGN
	Type     token.Token // token.IDENT
	Relation token.Token // token.IDENT
}

type RelationalReferenceType string

type Schema struct {
	Statements []Statement
	// contains filtered or unexported fields
}

type Statement interface {
	Node
	// contains filtered or unexported methods
}