Configuration management through information and code injection at compile time
Systems and methods for configuration management through information and code injection at compile time. An example method comprises: receiving a source code comprising one or more references to a variable; receiving metadata associated with the source code, wherein the metadata specifies a range of values of the variable; and identifying, in view of the range of values of the variable, a reachable section of the source code.
1. A method comprising:
receiving, by a processing device, a source code comprising one or more references to a run-time variable;
receiving metadata provided by a markup in the source code, wherein the metadata comprises a compiler-internal variable that specifies a run-time value of the run-time variable, wherein the run-time value determines an outcome of evaluating a conditional expression referencing the run-time variable;
identifying, at compile time, by evaluating the conditional expression based on the run-time value of the run-time variable, a reachable section of the source code;
injecting the run-time value of the run-time variable into the source code; and
compiling the reachable section of the source code.
2. The method of claim 1 , further comprising:
identifying, in view of the run-time value of the run-time variable, an unreachable section of the source code; and
excluding the unreachable section of the source code from a scope of compilation.
3. The method of claim 1 , wherein the metadata is further provided by a preprocessor directive.
4. The method of claim 1 , wherein the metadata is further provided by a configuration file.
5. A system comprising:
a memory;
a processing device operatively coupled to the memory, the processing device to:
receive a source code comprising one or more references to a run-time variable;
receive metadata provided by a markup in the source code, wherein the metadata comprises a compiler-internal variable that specifies a run-time value of the run-time variable, wherein the run-time value determines an outcome of evaluating a conditional expression referencing the run-time variable;
identify, at compile time, by evaluating the conditional expression based on the run-time value of the run-time variable, a reachable section of the source code;
inject the run-time value of the run-time variable into the source code; and
compile the reachable section of the source code.
6. The system of claim 5 , wherein the processing device is further to:
identify, in view of the run-time values of the run-time variable, an unreachable section of the source code; and
exclude the unreachable section of the source code from a scope of compilation.
7. The system of claim 5 , wherein the metadata is further provided by a preprocessor directive.
8. The system of claim 5 , wherein the metadata is further provided by a configuration file.
9. A non-transitory computer-readable storage medium comprising executable instructions that, when executed by a processing device, cause the processing device to:
receive a source code comprising one or more references to a run-time variable;
receive metadata provided by a markup in the source code, wherein the metadata comprises a compiler-internal variable that specifies a run-time value of the run-time variable, wherein the run-time value determines an outcome of evaluating a conditional expression referencing the run-time variable;
identify, at compile time, by evaluating the conditional expression based on the run-time value of the run-time variable, a reachable section of the source code;
inject the run-time value of the run-time variable into the source code; and
compile the reachable section of the source code.
10. The non-transitory computer-readable storage medium of claim 9 , further comprising executable instructions that, when executed by the processing device, cause the processing device to:
identify, in view of the run-time value of the run-time variable, an unreachable section of the source code; and
exclude the unreachable section of the source code from a scope of compilation.
11. The non-transitory computer-readable storage medium of claim 9 , wherein the metadata is further provided by a preprocessor directive.
12. The non-transitory computer-readable storage medium of claim 9 , wherein the metadata is further provided by a configuration file.