Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating normalized analysis artifacts for a source code base. One of the methods includes receiving a request to perform an analysis of a collection of source code files in a particular file system, wherein each source code file in the particular file system has a respective associated original file path. One or more normalized analysis artifacts are generated for the collection of source code files, including applying a file path transformation function to the original file path of each source code file referenced by the analysis artifacts to generate a normalized file path for the source code file, wherein each reference in the normalized analysis artifacts to a particular source code file uses the normalized file path for the particular source code file instead of the original file path for the particular source code file.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for matching and attributing code violations. One of the methods includes receiving a snapshot S of a code base of source code and a different snapshot T of the code base. Data representing first violations in the snapshot S and second violations in the snapshot T is received. Pairs of matching violations are determined using performing two or more matching processes, including performing a first matching process, the first matching process determining first pairs of matching violations according to a first matching algorithm and performing a second matching process, the second matching process determining second pairs of matching violations according to a second matching algorithm from violations not matched by the first matching process. The first pairs of matching violations and the second pairs of matching violations are included in the determined pairs of matching violations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for matching and attributing code violations. One of the methods includes receiving a snapshot S of a code base of source code and a different snapshot T of the code base. Data representing first violations in the snapshot S and second violations in the snapshot T is received. Pairs of matching violations are determined using performing two or more matching processes, including performing a first matching process, the first matching process determining first pairs of matching violations according to a first matching algorithm and performing a second matching process, the second matching process determining second pairs of matching violations according to a second matching algorithm from violations not matched by the first matching process. The first pairs of matching violations and the second pairs of matching violations are included in the determined pairs of matching violations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating a full set of analysis artifacts after incremental analysis of a source code base. One of the methods includes receiving a first full set of analysis artifacts and an incremental set of analysis artifacts for a project. An initial keep graph that is initially equivalent to the full build graph is generated. Any source code file or analysis artifact nodes that also occur in the incremental build graph are removed from the keep graph. Analysis artifacts for source code files in the full build graph that do not occur in the keep graph are deleted from the first full set of analysis artifacts. The analysis artifacts represented by nodes in the incremental build graph are copied into the first full set of analysis artifacts to generate a second full set of analysis artifacts for the project.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating a full set of analysis artifacts after incremental analysis of a source code base. One of the methods includes receiving a first full set of analysis artifacts and an incremental set of analysis artifacts for a project. An initial keep graph that is initially equivalent to the full build graph is generated. Any source code file or analysis artifact nodes that also occur in the incremental build graph are removed from the keep graph. Analysis artifacts for source code files in the full build graph that do not occur in the keep graph are deleted from the first full set of analysis artifacts. The analysis artifacts represented by nodes in the incremental build graph are copied into the first full set of analysis artifacts to generate a second full set of analysis artifacts for the project.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for matching and attributing code violations. One of the methods includes receiving a snapshot S of a code base of source code and a different snapshot T of the code base. Data representing first violations in the snapshot S and second violations in the snapshot Tis received. Pairs of matching violations are determined using performing two or more matching processes, including performing a first matching process, the first matching process determining first pairs of matching violations according to a first matching algorithm and performing a second matching process, the second matching process determining second pairs of matching violations according to a second matching algorithm from violations not matched by the first matching process. The first pairs of matching violations and the second pairs of matching violations are included in the determined pairs of matching violations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for matching and attributing code violations. One of the methods includes receiving a snapshot S of a code base of source code and a different snapshot T of the code base. Data representing first violations in the snapshot S and second violations in the snapshot T is received. Pairs of matching violations are determined using performing two or more matching processes, including performing a first matching process, the first matching process determining first pairs of matching violations according to a first matching algorithm and performing a second matching process, the second matching process determining second pairs of matching violations according to a second matching algorithm from violations not matched by the first matching process. The first pairs of matching violations and the second pairs of matching violations are included in the determined pairs of matching violations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for matching and attributing code violations. One of the methods includes receiving a snapshot S of a code base of source code and a different snapshot T of the code base. Data representing first violations in the snapshot S and second violations in the snapshot T is received. Pairs of matching violations are determined using performing two or more matching processes, including performing a first matching process, the first matching process determining first pairs of matching violations according to a first matching algorithm and performing a second matching process, the second matching process determining second pairs of matching violations according to a second matching algorithm from violations not matched by the first matching process. The first pairs of matching violations and the second pairs of matching violations are included in the determined pairs of matching violations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for extracting source code. One of the methods includes receiving, by a newly created process, a request to execute code of an executable file in the newly created process, wherein the request specifies a parameter. The newly created process loads a process interception library. Library initialization code of the process interception library determines whether the parameter should be intercepted. In response to determining that the parameter should be intercepted, the parameter is provided to another process.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for aggregating source code metric values. One of the methods includes obtaining data representing a directed graph, wherein one or more nodes of the graph are associated with a respective set of one or more metric instances, wherein each set of metric instances for each node includes all metric instances occurring in sets of any node descendant from the node in the graph, wherein each metric instance identifies a location in a source code base, and wherein each metric instance has a respective metric value, a respective identifier, and a respective attribute type. An attribute value is computed for a first node in the graph from the respective metric value of each metric instance in a first set of metric instances associated with the first node.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for matching and attributing code violations. One of the methods includes receiving a snapshot S of a code base of source code and a different snapshot T of the code base. Data representing first violations in the snapshot S and second violations in the snapshot T is received. Pairs of matching violations are determined using performing two or more matching processes, including performing a first matching process, the first matching process determining first pairs of matching violations according to a first matching algorithm and performing a second matching process, the second matching process determining second pairs of matching violations according to a second matching algorithm from violations not matched by the first matching process. The first pairs of matching violations and the second pairs of matching violations are included in the determined pairs of matching violations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for matching and attributing code violations. One of the methods includes receiving a snapshot S of a code base of source code and a different snapshot T of the code base. Data representing first violations in the snapshot S and second violations in the snapshot T is received. Pairs of matching violations are determined using performing two or more matching processes, including performing a first matching process, the first matching process determining first pairs of matching violations according to a first matching algorithm and performing a second matching process, the second matching process determining second pairs of matching violations according to a second matching algorithm from violations not matched by the first matching process. The first pairs of matching violations and the second pairs of matching violations are included in the determined pairs of matching violations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for extracting source code. One of the methods includes receiving, by a newly created process, a request to execute code of an executable file in the newly created process, wherein the request specifies a parameter. The newly created process loads a process interception library. Library initialization code of the process interception library determines whether the parameter should be intercepted. In response to determining that the parameter should be intercepted, the parameter is provided to another process.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for aggregating source code metric values. One of the methods includes obtaining data representing a directed graph, wherein one or more nodes of the graph are associated with a respective set of one or more metric instances, wherein each set of metric instances for each node includes all metric instances occurring in sets of any node descendant from the node in the graph, wherein each metric instance identifies a location in a source code base, and wherein each metric instance has a respective metric value, a respective identifier, and a respective attribute type. An attribute value is computed for a first node in the graph from the respective metric value of each metric instance in a first set of metric instances associated with the first node.

Abstract: A novel system and computer-implemented method for quickly and efficiently finding and reporting all clones with a large corpus of text. This is achieved by tokenizing the corpus, computing a rolling hash, filtering for hashes that occur more than once, and constructing an equivalence relation over these hashes in which hashes are equated if they are part of the same instance of duplication. The equivalence relation is then used to report all detected clones.