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. 20. The computer system of claim 11 , wherein the instructions, when executed by the one or more processors, further cause transforming the first portion of the input data to the first data, wherein the first portion is not valid for the first property type before the first portion is transformed to the first data, and wherein the first data is valid for the first property type after the first portion is transformed to the first data.