grafana/public/app/plugins/datasource/cloudwatch/expressions.ts

export enum QueryEditorPropertyType {
  String = 'string',
}

export interface QueryEditorProperty {
  type: QueryEditorPropertyType;
  name?: string;
}

export type QueryEditorOperatorType = string | boolean | number;
type QueryEditorOperatorValueType = QueryEditorOperatorType | QueryEditorOperatorType[];

export interface QueryEditorOperator<T extends QueryEditorOperatorValueType> {
  name?: string;
  value?: T;
}

export interface QueryEditorOperatorExpression {
  type: QueryEditorExpressionType.Operator;
  property: QueryEditorProperty;
  operator: QueryEditorOperator<QueryEditorOperatorValueType>;
}

export interface QueryEditorArrayExpression {
  type: QueryEditorExpressionType.And | QueryEditorExpressionType.Or;
  expressions: QueryEditorExpression[] | QueryEditorArrayExpression[];
}

export interface QueryEditorPropertyExpression {
  type: QueryEditorExpressionType.Property;
  property: QueryEditorProperty;
}

export enum QueryEditorExpressionType {
  Property = 'property',
  Operator = 'operator',
  Or = 'or',
  And = 'and',
  GroupBy = 'groupBy',
  Function = 'function',
  FunctionParameter = 'functionParameter',
}

export type QueryEditorExpression =
  | QueryEditorArrayExpression
  | QueryEditorPropertyExpression
  | QueryEditorGroupByExpression
  | QueryEditorFunctionExpression
  | QueryEditorFunctionParameterExpression
  | QueryEditorOperatorExpression;

export interface QueryEditorGroupByExpression {
  type: QueryEditorExpressionType.GroupBy;
  property: QueryEditorProperty;
}

export interface QueryEditorFunctionExpression {
  type: QueryEditorExpressionType.Function;
  name?: string;
  parameters?: QueryEditorFunctionParameterExpression[];
}

export interface QueryEditorFunctionParameterExpression {
  type: QueryEditorExpressionType.FunctionParameter;
  name?: string;
}