US 8,621,447 B1Granted

Systems and methods for dynamic struct variable creation including inline declaration with dynamic keys

AssigneeAdobe Systems Incorporated

InventorsChandan Kumar, Sanjeev Kumar

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Abstract

A parser can be configured to parse source code to generate code for dynamically generating structures at runtime. Any or all of the structure name, keys, and values can be defined dynamically (i.e. at runtime), rather than requiring declaration in the source code. Embodiments include a method in which a source file is parsed to identify an expression creating a dynamic structure with at least one key-value pair. The method can comprise generating a plurality of expressions for creating intermediate data structures which, at runtime, can cause the dynamic structure to be defined as set forth in the declarative expression. The dynamic structure may comprise one or more declared key-value pairs and/or may comprise one or more key-value pairs that are also dynamic.

Claims20

Dependent claims

A method, comprising:

accessing source code from a non-transitory computer-readable medium, the source code comprising at least one declarative expression;
identifying a declarative expression of a dynamic structure in source code by parsing the source code, the dynamic structure declared as having at least one of a name referencing a dynamic value or at least one key-value pair referencing a dynamic value;
generating a mapping for use in generating output code, the output code configured to generate a structure at runtime based on the declaration of the dynamic structure, wherein the mapping comprises at least one intermediate expression corresponding to the dynamic value, and wherein the intermediate expression comprises:
a declaration to initialize an intermediate component of the mapping, the intermediate component of the mapping comprising at least one of an array or a variable;
and
a declaration to initialize a structure having an intermediate array name in place of an array declared in the dynamic structure;
and
storing the mapping in the non-transitory computer-readable medium.

5 more elements

A computing system comprising a processor with access to a memory embodying program components, the program components comprising:

a parser module that configures the computing system to access source code comprising declarative expressions and use a syntax of the expressions to generate output code, the output code comprising executable code or byte code,
wherein the parser module configures the computing system to (i) identify a declarative expression of a dynamic structure in the source code and (ii) generate a mapping for use in generating output code, the dynamic structure declared as having at least one of a name referencing a dynamic value or at least one key-value pair referencing a dynamic value and the mapping comprising at least one intermediate expression corresponding to the dynamic value, and wherein the at least one intermediate expression comprises:
a declaration to initialize an intermediate component of the mapping, the intermediate component of the mapping comprising at least one of an array or a variable;
and
a declaration to initialize a structure having an intermediate array name in place of an array declared in the dynamic structure;
and
wherein generating output code comprises selecting code segments that cause a computing device to initialize a series of implicit nodes corresponding to the at least one intermediate expression and then assemble the nodes together into the dynamic structure at runtime.

4 more elements

A computer program product comprising a non-transitory computer readable medium embodying program code executable by a computing system, the program code comprising:

program code for accessing source code from a computer-readable medium, the source code comprising at least one declarative expression;
program code for identifying a declarative expression of a dynamic structure in source code by parsing the source code, the dynamic structure declared as having at least one of a name referencing a dynamic value or at least one key-value pair referencing a dynamic value;
program code for generating a mapping for use in generating output code, the output code configured to generate a structure at runtime based on the declaration of the dynamic structure, wherein the mapping comprises at least one intermediate expression corresponding to the dynamic value, and wherein the at least one intermediate expression comprises:
a declaration to initialize an intermediate component of the mapping, the intermediate component of the mapping comprising at least one of an array or a variable;
and
a declaration to initialize a structure having an intermediate array name in place of an array declared in the dynamic structure;
and
program code for storing the mapping in the non-transitory computer-readable medium.

5 more elements

Dependencies are inferred from the claim text.