TAJS | Type Analyzer for JavaScript | Code Analyzer library

 by   cs-au-dk Java Version: Current License: Apache-2.0

kandi X-RAY | TAJS Summary

kandi X-RAY | TAJS Summary

TAJS is a Java library typically used in Code Quality, Code Analyzer applications. TAJS has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can download it from GitHub.

Copyright 2009-2020 Aarhus University. TAJS is a dataflow analysis for JavaScript that infers type information and call graphs. The current version of the analysis contains a model of ECMAScript 3rd edition, including the standard library, and partial models of the ECMAScript 5 and its standard library, the HTML DOM, and the browser API. In some cases where ECMAScript has introduced incompatibilities with prior editions, including some changes made in ECMAScript 6, the analysis models the most recent language design. Other recent ECMAScript language features are partially supported via Babel. The browser API is modeled after Chrome. For research publications and other information about this tool see
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            kandi-support Support

              TAJS has a low active ecosystem.
              It has 152 star(s) with 31 fork(s). There are 17 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 6 open issues and 10 have been closed. On average issues are closed in 42 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of TAJS is current.

            kandi-Quality Quality

              TAJS has 0 bugs and 0 code smells.

            kandi-Security Security

              TAJS has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              TAJS code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              TAJS is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              TAJS releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              TAJS saves you 112334 person hours of effort in developing the same functionality from scratch.
              It has 119802 lines of code, 8786 functions and 2576 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed TAJS and discovered the below as its top functions. This is intended to give you an instant insight into TAJS implemented functionality, and help decide if they suit your requirements.
            • Marks the beginning of a BeginWithStatement
            • Visits an object node
            • Visit a begin loop node
            • Marks the next property
            • Overrides the visitor to check if there are more properties
            • Visits a unary operator node
            • Visits a binary operator node
            • Visits a catch node
            • Emit a write - side assignment
            • Visits a constant node
            • Marks the delete property
            • Marks the beginning of a for - in
            • Handles an assignment
            • Handles a write property accessor
            • Visits a readProperty node
            • Process a new function call
            • Returns the size of a block
            • Returns a string representation of this abstract object
            • Puts all values from the given map into this map
            • Appends the specified collection to this set
            • A map of implemented methods
            • Visits an abstract property
            • Returns a description of the abstract state
            • Associates the specified value with the specified key
            • Build a map of line values to a set of line values
            • Checks if two values are equal
            • Returns a string representation of this block
            • Loads the log file
            • Parses the given source code and returns a list of script files
            • Creates the constructors
            • Compares two OptionValues
            Get all kandi verified functions for this library.

            TAJS Key Features

            No Key Features are available at this moment for TAJS.

            TAJS Examples and Code Snippets

            No Code Snippets are available at this moment for TAJS.

            Community Discussions

            QUESTION

            Rust duplicated use statements
            Asked 2022-Mar-23 at 13:43

            Firt of all, I am a total begginner in Rust, I started to use a code analyzer (Mega-Linter) and it made me realize how much I duplicated the same "use" statements in my submodules. Here what my source file tree looks like :

            ...

            ANSWER

            Answered 2022-Mar-23 at 13:43

            You can create a ui_prelude module that contains the use statements as pub use, and then do just use ui_prelude::* in your modules:

            Source https://stackoverflow.com/questions/71586594

            QUESTION

            Specific Requirements for custom Roslyn Code Analyzer to run in live analysis?
            Asked 2022-Mar-18 at 12:46

            I've got a Roslyn based Code Analyzer and Codefix. When directly creating the ReportDiagnostic from an AnalyzerCodeBlock, they would show up in live analysis (Problems in Jetbrains Rider).

            However, it needs to parse additional data from the solution to build a dependency tree to make the decision. So now it works like this:

            ...

            ANSWER

            Answered 2022-Mar-18 at 12:46

            CompilationStart isn't a problem. It doesn't cause an analyzer to be build-only. However, CompilationEnd is the problem. They're build only, and also their associated code fixes won't show in the IDE. This is for performance reasons.

            Related discussion: https://github.com/dotnet/roslyn/issues/51653

            Source https://stackoverflow.com/questions/71425412

            QUESTION

            storing all function body from txt file in dictionary in python
            Asked 2022-Mar-07 at 01:31

            I'm trying to do code analyzer app and i have a txt file that contains a python code and my goal now is to save all functions in this txt file in dictionary in the class, but i don't have any idea how can i do it

            at first i create class that name is class CodeAnalyzer:

            ...

            ANSWER

            Answered 2022-Mar-07 at 01:31

            You can just use exec() with it's globals() dict set to your class instance's namespace.

            Source https://stackoverflow.com/questions/71374069

            QUESTION

            PHP 7.4+ class property typing
            Asked 2022-Feb-09 at 14:23

            I'm sure that question has been asked numerous times but I can't seem to find a good/satisfying answer so please bear with me.

            Using PHP 7.4+, I tend to type everything I can. But I have some problems with Doctrine entities properties.

            If I type everything correctly, I usually get a lot of errors like this one.

            Typed property App\Entity\User::$createdAt must not be accessed before initialization

            A code sample for that type of error would look something like this

            ...

            ANSWER

            Answered 2022-Feb-09 at 14:23

            I'm not sure if this is a bad practice, but it turned out I only had to remove that check from phpstan configuration.

            Source https://stackoverflow.com/questions/69579676

            QUESTION

            MS Word Online add-in: How to detect focus?
            Asked 2021-Nov-30 at 10:26

            In developing a Microsoft Word Online add-in, my team needs to detect focus being gained/regained by the document (ETA: to trigger other functionality which depends on this knowledge). It appears that Microsoft has tightly locked down scriptability in this context--all window.on* functions are replaced by null, all error-handling code is deeply obfuscated, etc. Our efforts so far have been frustrated.

            Simply setting window.onfocus to a new function causes the add-in to not load correctly, likely because it's triggering a code analyzer as unsafe, but hard to tell.

            There is also nothing in the Microsoft Word Online JavaScript API which directly provides this functionality. Scripts can detect when the document selection has changed easily with a provided method, but that seems to be about it for documented functionality in this area. (Obviously simply sensing document changes will not work.)

            What's the best approach to sensing document and/or window focus in this situation? Thank you.

            ...

            ANSWER

            Answered 2021-Nov-30 at 10:26

            The document.onvisibilitychange event can be used as a rough approximation of the required functionality.

            Source https://stackoverflow.com/questions/70137351

            QUESTION

            Viewing all 'suggestions' in a solution
            Asked 2021-Nov-08 at 15:47

            Newbie question, I've just switched from Visual Studio to Rider, so I'm still trying to get my bearings.

            Trying to use the code analyzers and see the suggestions for the entire solution.
            The errors/warnings I can see in the 'Errors In Solution' window but the suggestions are not listed there. Can I add them to that list somehow?, or is there a different window?

            Edit: It's not just the Roslyn analyzers, for example a spelling mistake shows up highlighted in the source as as 'suggestion'.
            When opening the 'Errors in Solution' I would have expected those to also be there but they aren't.

            ...

            ANSWER

            Answered 2021-Nov-08 at 11:42

            You should just need to enable them.

            See Rider Roslyn Analyzers settings for the docs.

            Source https://stackoverflow.com/questions/69881692

            QUESTION

            Webpack plugin API: getting source maps for a module during parsing
            Asked 2021-Nov-03 at 23:17

            I'm writing a code analyzer. My analyzer uses Webpack's JavaScriptParser hooks. I need to output an error message, but the line number from node.loc is off because a loader has transformed the source code. So I want to feed the error message through a source map before logging it.

            ...

            ANSWER

            Answered 2021-Oct-29 at 15:06

            I figured it out by reading the Webpack source code. The function I needed was module.originalSource().

            Source https://stackoverflow.com/questions/69728076

            QUESTION

            how to append one element to a GNU bash array variable and use that array variable as arguments to an ELF executable
            Asked 2021-Sep-20 at 08:39

            In the Bismon static source code analyzer (GPLv3+ licensed, git commit 49dd1bd232854a) for embedded C and C++ code (using a plugin for GCC 10 straight compiler on Debian bookworm for x86-64) I have a test Bash script Hello-World-Analyze which uses a GNU array variable bismon_hello_args.

            That variable is declared (at line 56) using:

            ...

            ANSWER

            Answered 2021-Sep-20 at 08:39

            Merely += adds a string to an existing string. You probably want bismon_hello_args+=("$f");; (notice also the quotes). To call the program, use ./bismon "${bismon_hello_args[@]}" & (notice the quotes, again).

            The syntax to use an array variable is different than the syntax for simple scalars. This syntax was inherited from ksh, which in turn needed to find a way to introduce new behavior without sacrificing compatibility with existing Bourne shell scripts.

            Without the array modifiers, Bash simply accesses the first element of the array. (This confuses beginners and experienced practitioners alike.)

            Source https://stackoverflow.com/questions/69251163

            QUESTION

            Invoke method of analyzed assembly from a Roslyn Code Analyzer
            Asked 2021-Aug-30 at 18:04

            I have a C# roslyn code analyzer that needs to analyze the usage scenarios of generic method invocations of a given class. I am gathering all the references to the method, the generic type parameters and so forth and then want to invoke the methods (via reflection) to analyze the output to report potential diagnostics in the analyzer. Is there a way from a Roslyn-Compilation.Assembly to a System.Reflection.Assembly? If not, is there any other way?

            The Analyzer project and the solution to be analyzed are under my control.

            Thanks!

            ...

            ANSWER

            Answered 2021-Aug-30 at 18:04

            You can't do this: when your analyzer is running we haven't actually built the assembly yet. Furthermore, there's no guarantee your built thing can actually run. If I'm using a Windows machine to say build a project that only runs on Linux...that won't work well.

            Source https://stackoverflow.com/questions/68980059

            QUESTION

            Autosar standard-compilant way to use regex
            Asked 2021-Aug-05 at 17:28

            I need to parse URI-like string. This URI is specific to the project and corresponds to "scheme://path/to/file", where path should be a syntactically correct path to file from filesystem point of view. For this purpose std::regex was used with pattern R"(^(r[o|w])\:\/\/(((?!\$|\~|\.{2,}|\/$).)+)$)".

            It works fine but code analyzer complies that it is not compliant as $ character is not belong to the C++ Language Standard basic source character set:

            AUTOSAR C++14 A2-3-1 (Required) Only those characters specified in the C++ Language Standard basic source character set shall be used in the source code.

            Exception to this rule (according to Autosar Guidelines):

            It is permitted to use other characters inside the text of a wide string and a UTF-8 encoded string literal.

            wchar_t is prohibited by other rule, although it works with UTF-8 string (but it looks ugly and unreadable in the code, also I'm afraid it is not safe).

            Could someone help me with workaround or std::regex here is not the best solution, then what would be better?

            Are any other drawbacks of using UTF-8 string literal?

            P.S. I need $ to be sure (on parsing phase) that path is not a directory and that it is not contain none of /../, ~, $ , so I can't just skip it.

            ...

            ANSWER

            Answered 2021-Aug-05 at 17:28

            I feel like making the code worse for the sake of satisfying an analyser is counterproductive and most likely violates the spirit of the guidelines, so I'm intentionally ignoring ways to address the problem that would involve building the regex string in a convoluted manner, since what you did is the best way to build such a regex string.

            Could someone help me with workaround or std::regex here is not the best solution, then what would be better?

            Option A: Write a simple validation function:

            I'm actually surprised that such strict guidelines even allow regexes in the first place. They are notoriously hard to audit, debug, and maintain.

            You could easily express the same logic with actual code, which would not only satisfy the analyser, but be more aligned with the spirit of the guidelines. On top of that it'll compile faster and probably run faster as well.

            Something along these rough lines, based on a cursory reading of your regex. (please don't just use this without running it through a battery of tests, I sure didn't):

            Source https://stackoverflow.com/questions/68656983

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install TAJS

            Make sure you clone not only the TAJS repository but also the submodules, for example by running. To build TAJS, you must first install Java, Ant, and Node.js.
            -inspector - start TAJS Inspector after analysis (see below)
            -callgraph - output call graph as text and in a file out/callgraph.dot (process with Graphviz dot)
            -show-variable-info - output type and line information about all variables
            -debug - output extensive internal information during the analysis
            -flowgraph - output the initial and final flow graphs (TAJS's intermediate representation) as text and to out/flowgraphs/ (in Graphviz dot format, with a file for each function and for the complete program)
            -low-severity - enable many more type warnings
            -quiet - only print results, not information about analysis progress
            -states - output intermediate abstract states during the analysis
            -statistics - output various statistics about the analysis results
            -uneval - enable the Unevalizer for on-the-fly translation of eval calls, as described in 'Remedying the Eval that Men Do', ISSTA 2012
            -determinacy - enable the techniques described in 'Determinacy in Static Analysis of jQuery', OOPSLA 2014
            -test-soundness - test soundness using concrete execution as described in 'Systematic Approaches for Increasing Soundness and Precision of Static Analyzers', SOAP 2017 (see below)
            -blended-analysis - use concrete execution as described in 'Systematic Approaches for Increasing Soundness and Precision of Static Analyzers', SOAP 2017 for increasing precision (see below)
            -unsound X - enable unsound assumption X, e.g. -ignore-unlikely-property-reads causes some unlikely properties to be ignored during dynamic property read operations, and -show-unsoundness-usage outputs usage of unsound assumptions
            -babel - enable preprocessing using Babel to support recent ECMAScript features
            -type-filtering - enable type filtering using TypeScript declaration files for npm packages (see below)

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
            Find more information at:

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