11. A computer system comprising: one or more processors; one or more non-transitory computer-readable storage media storing instructions, which, when executed by the one or more processors, cause: storing a plurality of parser definitions, wherein each parser definition is associated with an object type, wherein a particular parser definition of the one or more parser definitions comprises two or more parser sub-definitions, wherein a first parser sub-definition of the two or more parser sub-definitions is associated with a first property type, and wherein a second parser sub-definition of the two or more parser sub-definitions is associated with a second property type; storing a first validator for the first property type and a second validator for the second property type, the first validator defining valid data for the first property type and the second validator defining valid data for the second property type; determining whether input data matches the particular parser definition; based at least in part on determining that the input data matches the particular parser definition: creating at least a first property instance of the first property type and a second property instance of the second property type; storing first data corresponding to a first portion of the input data in the first property instance when the first data matches the first validator.
11. A computer system comprising: one or more processors; one or more non-transitory computer-readable storage media storing instructions, which, when executed by the one or more processors, cause: storing a plurality of parser definitions, wherein each parser definition is associated with an object type, wherein a particular parser definition of the one or more parser definitions comprises two or more parser sub-definitions, wherein a first parser sub-definition of the two or more parser sub-definitions is associated with a first property type, and wherein a second parser sub-definition of the two or more parser sub-definitions is associated with a second property type; storing a first validator for the first property type and a second validator for the second property type, the first validator defining valid data for the first property type and the second validator defining valid data for the second property type; determining whether input data matches the particular parser definition; based at least in part on determining that the input data matches the particular parser definition: creating at least a first property instance of the first property type and a second property instance of the second property type; storing first data corresponding to a first portion of the input data in the first property instance when the first data matches the first validator. 18. The computer system of claim 11 , wherein at least the first property type is a composite type that includes a first component and a second component, wherein each of the first component and the second component is a string component, a date component, or a number component, and wherein the first portion of the input data and the corresponding first data each consist of respective string data, date data, or number data corresponding to the first component and the second component.