Method, system, and program for performing an impact analysis of program statements in at least one source code file

• US 7,194,475 B2
• Filed: 10/30/2001
• Issued: 03/20/2007
• Est. Priority Date: 10/30/2001
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: England, Laurence Edward, DelMonaco, John Carl
• Primary Examiner(s): ALAM, SHAHID AL
• Application Number:
  US10/003,952
• Publication Number:
  US 20030084063A1
• Time in Patent Office: 1,967 Days
• Field of Search: 707/102, 707/203, 707/103.R, 707/104.1, 709/206, 709/221, 714/38, 717/121, 717/128
• US Class Current: 1/1
• CPC Class Codes: G06F 8/70 Software maintenance or management
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface
• CPC Class Codes: Y10S 707/99944 Object-oriented database structure
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

Provided is a method, system, and program for performing an impact analysis of program statements in a source code file, wherein each program statement has at least one of an input parameter and output parameter. A selection is received of at least one program statement in the source code file. For each selected program statement, a determination is made of program statements in the source code file having as one input parameter one program artifact that is affected by the selected program statement.

Claims

1. A method for performing an impact analysis of program statements in a source code file that is one of a plurality of source code files, wherein each program statement has at least one of an input parameter and output parameter, comprising:

receiving selection of at least one program statement in one source code file; and

for each selected program statement, determining program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected program statement, wherein recursive calls are made for determining the program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected source program statement, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises;

for each previously determined program statement having as one input parameter one program artifact affected by the selected program statement, performing the steps of;

(i) determining the output parameter program artifact of the statement; and

(ii) determining program statements in the source code files having as one input parameter the program artifact that is the output parameter of the previously determined statement.

2. The method of claim 1, wherein the source code files including the program artifacts affected by the selected program statement comprise components of an application program.

3. The method of claim 1, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises:

determining program statements in the source code files having as one input parameter the program artifact that is one output parameter to the selected program statement.

4. The method of claim 1, further comprising:

outputting information on determined program statements and program artifacts affected by each selected program statement.

5. The method of claim 1, wherein the program artifact comprises a variable, Input/Output buffer or file.

6. The method of claim 1, wherein one program statement has one input parameter that is affected by the selected program statement if the output parameter program artifact of the selected program statement is the input parameter program artifact to the program statement.

7. The method of claim 6, wherein one statement further has one input parameter that is affected by the selected program statement if the output parameter program artifact of the selected program statement is the input parameter program artifact to the program statement or if the output parameter program artifact of one statement other than the selected program statement has as one input parameter one program artifact affected by the selected program statement.

8. The method of claim 1, wherein if the selected program statement comprises a call to a program routine comprised of a plurality of statements in one of the source code files, then one statement has one input parameter that is affected by the selected program statement if:

the output parameter program artifact of the selected source code statement is the input parameter program artifact to the statement;

or

the input parameter of the selected source code statement is the input parameter program artifact to the statement.

9. The method of claim 1, further comprising:

accessing the source code files from a control management system.

10. The method of claim 1, further comprising:

performing recursively the determination of program statements throughout the source code files.

11. The method of claim 10, wherein the program statements have as one input parameter one program artifact that is the output parameter of one previously determined program statement.

12. The method of claim 11, wherein the one previously determined program statement has as one input parameter one program statement affected directly or indirectly by the selected source program statement.

13. The method of claim 12, further comprising:

generating information on each program artifact referenced as an output parameter in at least one program statement.

14. The method of claim 13, further comprising:

determining program statements in the source code file having as one input parameter one program artifact that is affected by the selected source program statement.

15. The method of claim 12, further comprising:

determining program statements in the source code file having as one input parameter one program artifact that is affected by the selected source program statement.

16. The method of claim 11, wherein the one previously determined program statement has as one input parameter one program statement affected directly by the selected source program statement.

17. The method of claim 1, wherein the recursive calls are made during impact analysis routine.

18. The method of claim 1, wherein for each program statement referencing a modified variable as an input variable, an impact analysis routine makes a recursive call to the impact analysis routine.

19. A method for performing an impact analysis of program statements in a source code file that is one of a plurality of source code files, wherein each program statement has at least one of an input parameter and output parameter, comprising:

receiving selection of at least one program statement in one source code file; and

for each selected program statement, determining program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected program statement, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises determining program statements in the source code files having as one input parameter the program artifact that is one output parameter to the selected program statement, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises;

for each previously determined program statement having as one input parameter one program artifact affected by the selected program statement, performing the steps of;

(i) determining the output parameter program artifact of the statement; and

(ii) determining program statements in the source code files having as one input parameter the program artifact that is the output parameter of the previously determined statement, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises;

for each previously determined program statement having as one input parameter one program artifact that is the output parameter of one previously determined program statement having as one input parameter one program statement affected directly or indirectly by the selected source program statement, performing the steps of;

(a) determining the output parameter program artifact of the determined program statement;

(b) determining program statements in the source code files having as one input parameter the program artifact that is the output parameter of the determined program statement; and

(c) performing recursively the determination of program statements having as one input parameter one program artifact that is the output parameter of one previously determined program statement having as one input parameter one program statement affected directly or indirectly by the selected source statement.

20. A system for performing an impact analysis of program statements in a source code file that is one of a plurality of source code files, wherein each program statement has at least one of an input parameter and output parameter, comprising:

means for receiving selection of at least one program statement in one source code file; and

means for determining, for each selected program statement, program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected program statement, wherein recursive calls are made for determining the program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected source program statement, wherein the means for determining the program statements having as one input parameter one program artifact affected by the selected program statement further performs;

for each previously determined program statement having as one input parameter one program artifact affected by the selected program statement, performing the steps of;

(i) determining the output parameter program artifact of the statement; and

(ii) determining program statements in the source code files having as one input parameter the program artifact that is the output parameter of the previously determined statement.

21. The system of claim 20, wherein the source code files including the program artifacts affected by the selected program statement comprise components of an application program.

22. The system of claim 20, wherein the means for determining the program statements having as one input parameter one program artifact affected by the selected program statement further performs:

determining program statements in the source code files having as one input parameter the program artifact that is one output parameter to the selected program statement.

23. The system of claim 20, further comprising:

means for outputting information on determined program statements and program artifacts affected by each selected program statement.

24. The system of claim 20, wherein the program artifact comprises a variable, Input/Output buffer or file.

25. The system of claim 20, wherein one program statement has one input parameter that is affected by the selected program statement if the output parameter program artifact of the selected program statement is the input parameter program artifact to the program statement.

26. The system of claim 25, wherein one statement further has one input parameter that is affected by the selected program statement if the output parameter program artifact of the selected program statement is the input parameter program artifact to the program statement or if the output parameter program artifact of one statement other than the selected program statement has as one input parameter one program artifact affected by the selected program statement.

27. The system of claim 20, wherein if the selected program statement comprises a call to a program routine comprised of a plurality of statements in one of the source code files, then one statement has one input parameter that is affected by the selected program statement if:

the output parameter program artifact of the selected source code statement is the input parameter program artifact to the statement;

or

the input parameter of the selected source code statement is the input parameter program artifact to the statement.

28. The system of claim 20, further comprising:

means for accessing the source code files from a control management system.

29. The system of claim 20, further comprising:

means for performing recursively the determination of program statements throughout the source code files.

30. The system of claim 29, wherein the program statements have as one input parameter one program artifact that is the output parameter of one previously determined program statement.

31. The system of claim 30, wherein the one previously determined program statement has as one input parameter one program statement affected directly or indirectly by the selected source program statement.

32. The system of claim 31, further comprising:

means for generating information on each program artifact referenced as an output parameter in at least one program statement.

33. The system of claim 32, further comprising:

means for determining program statements in the source code file having as one input parameter one program artifact that is affected by the selected source program statement.

34. The system of claim 31, further comprising:

means for determining program statements in the source code file having as one input parameter one program artifact that is affected by the selected source program statement.

35. The system of claim 30, wherein the one previously determined program statement has as one input parameter one program statement affected directly by the selected source program statement.

36. The system of claim 20, wherein the recursive calls are made during impact analysis to an impact analysis routine.

37. The system of claim 20, wherein for each program statement referencing a modified variable as an input variable, an impact analysis routine makes a recursive call to the impact analysis routine.

38. A system for performing an impact analysis of program statements in a source code file that is one of a plurality of source code files, wherein each program statement has at least one of an input parameter and output parameter, comprising:

means for receiving selection of at least one program statement in one source code file; and

means for determining, for each selected program statement, program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected program statement, wherein the means for determining the program statements having as one input parameter one program artifact affected by the selected program statement further performs determining program statements in the source code files having as one input parameter the program artifact that is one output parameter to the selected program statement, wherein the means for determining the program statements having as one input parameter one program artifact affected by the selected program statement further performs for each previously determined program statement having as one input parameter one program artifact affected by the selected program statement;

(i) determining the output parameter program artifact of the statement; and

(ii) determining program statements in the source code files having as one input parameter the program artifact that is the output parameter of the previously determined statement, wherein the means for determining the program statements having as one input parameter one program artifact affected by the selected program statement further performs for each previously determined program statement having as one input parameter one program artifact that is the output parameter of one previously determined program statement having as one input parameter one program statement affected directly or indirectly by the selected source program statement;

(a) determining the output parameter program artifact of the determined program statement;

(b) determining program statements in the source code files having as one input parameter the program artifact that is the output parameter of the determined program statement; and

(c) performing recursively the determination of program statements having as one input parameter one program artifact that is the output parameter of one previously determined program statement having as one input parameter one program statement affected directly or indirectly by the selected source statement.

39. An article of manufacture including code for performing an impact analysis of program statements in a source code file that is one of a plurality of source code files, wherein each program statement has at least one of an input parameter and output parameter, by:

receiving selection of at least one program statement in one source code file; and

for each selected program statement, determining program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected program statement, wherein recursive calls are made for determining the program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected source program statement, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises;

for each previously determined program statement having as one input parameter one program artifact affected by the selected program statement, performing the steps of;

(i) determining the output parameter program artifact of the statement; and

(ii) determining program statements in the source code files having as one input parameter the program artifact that is the output parameter of the previously determined statement.

40. The article of manufacture of claim 39, wherein the source code files including the program artifacts affected by the selected program statement comprise components of an application program.

41. The article of manufacture of claim 39, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises:

determining program statements in the source code files having as one input parameter the program artifact that is one output parameter to the selected program statement.

42. The article of manufacture of claim 39, further comprising:

outputting information on determined program statements and program artifacts affected by each selected program statement.

43. The article of manufacture of claim 39, wherein the program artifact comprises a variable, Input/Output buffer or file.

44. The article of manufacture of claim 39, wherein one program statement has one input parameter that is affected by the selected program statement if the output parameter program artifact of the selected program statement is the input parameter program artifact to the program statement.

45. The article of manufacture of claim 44, wherein one statement further has one input parameter that is affected by the selected program statement if the output parameter program artifact of the selected program statement is the input parameter program artifact to the program statement or if the output parameter program artifact of one statement other than the selected program statement has as one input parameter one program artifact affected by the selected program statement.

46. The article of manufacture of claim 39, wherein if the selected program statement comprises a call to a program routine comprised of a plurality of statements in one of the source code files, then one statement has one input parameter that is affected by the selected program statement if:

the output parameter program artifact of the selected source code statement is the input parameter program artifact to the statement;

or

the input parameter of the selected source code statement is the input parameter program artifact to the statement.

47. The article of manufacture of claim 39, further comprising:

accessing the source code files from a control management system.

48. The article of manufacture of claim 39, wherein the code further performs recursive determination of program statements throughout the source code files.

49. The article of manufacture of claim 48, wherein the program statements have as one input parameter one program artifact that is the output parameter of one previously determined program statement.

50. The article of manufacture of claim 49, wherein the one previously determined program statement has as one input parameter one program statement affected directly or indirectly by the selected source program statement.

51. The article of manufacture of claim 50, wherein the code further performs:

generating information on each program artifact referenced as an output parameter in at least one program statement.

52. The article of manufacture of claim 51, wherein the code further performs:

determining program statements in the source code file having as one input parameter one program artifact that is affected by the selected source program statement.

53. The article of manufacture of claim 50, wherein the code further performs:

determining program statements in the source code file having as one input parameter one program artifact that is affected by the selected source program statement.

54. The article of manufacture of claim 49, wherein the one previously determined program statement has as one input parameter one program statement affected directly by the selected source program statement.

55. The article of manufacture of claim 39, wherein the recursive calls are made during impact analysis to an impact analysis routine.

56. The article of manufacture of claim 39, wherein for each program statement referencing a modified variable as an input variable, an impact analysis routine makes a recursive call to the impact analysis routine.

57. An article of manufacture including code for performing an impact analysis of program statements in a source code file that is one of a plurality of source code files, wherein each program statement has at least one of an input parameter and output parameter, by:

receiving selection of at least one program statement in one source code file; and

for each selected program statement, determining program statements throughout the source code files having as one input parameter one program artifact that is affected by the selected program statement, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises

determining program statements in the source code files having as one input parameter the program artifact that is one output parameter to the selected program statement, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises;

for each previously determined program statement having as one input parameter one program artifact affected by the selected program statement, performing the steps of;

(i) determining the output parameter program artifact of the statement; and

(ii) determining program statements in the source code files having as one input parameter the program artifact that is the output parameter of the previously determined statement, wherein determining the program statements having as one input parameter one program artifact affected by the selected program statement further comprises;

for each previously determined program statement having as one input parameter one program artifact that is the output parameter of one previously determined program statement having as one input parameter one program statement affected directly or indirectly by the selected source program statement, performing the steps of;

(a) determining the output parameter program artifact of the determined program statement;

(b) determining all program statements in the source code files having as one input parameter the program artifact that is the output parameter of the determined program statement; and

(c) performing recursively the determination of program statements having as one input parameter one program artifact that is the output parameter of one previously determined program statement having as one input parameter one program statement affected directly or indirectly by the selected source statement.