| 摘要 |
PROBLEM TO BE SOLVED: To mechanically set a range of an influence spread without extracting any class or method with no influence spread, and to achieve improvement in the investigating accuracy of the influence spread and improvement in working efficiency in the case of modifying a largely scaled system.SOLUTION: Dependency analysis means is configured to search instruction sentences included in an abstract syntax tree, and to analyze a relationship between the instruction sentences to generate dependency between the instruction sentences. Influence spread analysis means is configured to, on the basis of the dependency specifying the influence source instruction sentence and the influence destination instruction sentence, trace the influence destination instruction sentence from the influence source instruction sentence, and to trace the influence destination instruction sentence as the influence source instruction sentence and the other instruction sentence as the influence destination instruction sentence from a base point as for the instruction sentences in an abstract syntax tree in a repeated manner. Thus, it is possible to specify the range of influence spread. |
