stack-machine | simple stack-based virtual machine | Interpreter library

 by   cslarsen C++ Version: Current License: No License

kandi X-RAY | stack-machine Summary

kandi X-RAY | stack-machine Summary

stack-machine is a C++ library typically used in Utilities, Interpreter applications. stack-machine has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A simple stack-based virtual machine in C++ with a Forth like programming language
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              stack-machine has a low active ecosystem.
              It has 143 star(s) with 20 fork(s). There are 12 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of stack-machine is current.

            kandi-Quality Quality

              stack-machine has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              stack-machine does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              stack-machine releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            stack-machine Key Features

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            stack-machine Examples and Code Snippets

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            Community Discussions

            QUESTION

            I got a error ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1
            Asked 2022-Mar-20 at 04:40

            i am learning to implement a simple Stack base machine using Linklist with c++. There are constant.h, Stackframe.h, StackFrame,cpp, main.cpp. I code on MacOs 10.14.6 with Visual Studio Code. I am getting some trouble when i run main.cpp file. Here is error that i got:

            ...

            ANSWER

            Answered 2022-Mar-20 at 04:40

            You haven't told g++ to compile and link in StackFrame.cpp.

            Where you have

            Source https://stackoverflow.com/questions/71543991

            QUESTION

            Generating branch instructions from an AST for a conditional expression
            Asked 2020-May-31 at 00:25

            I am trying to write a compiler for a domain-specific language, targeting a stack-machine based VM that is NOT a JVM.

            I have already generated a parser for my language, and can readily produce an AST which I can easily walk. I also have had no problem converting many of the statements of my language into the appropriate instructions for this VM, but am facing an obstacle when it comes to the matter of handling the generation of appropriate branching instructions when complex conditionals are encountered, especially when they are combined with (possibly nested) 'and'-like or 'or' like operations which should use short-circuiting branching as applicable.

            I am not asking anyone to write this for me. I know that I have not begun to describe my problem in sufficient detail for that. What I am asking for is pointers to useful material that can get me past this hurdle I am facing. As I said, I am already past the point of converting about 90% of the statements in my language into applicable instructions, but it is the handling of conditionals and generating the appropriate flow control instructions that has got me stumped. Much of the info that I have been able to find so far on generating code from an AST only seems to deal with the generation of code corresponding to simple imperative-like statements, but the handing of conditionals and flow control appears to be much more scarce.

            Other than the short-circuiting/lazy-evaluation mechanism for 'and' and 'or' like constructs that I have described, I am not concerned with handling any other optimizations.

            ...

            ANSWER

            Answered 2020-May-31 at 00:25

            Every conditional control flow can be modelled as a flow chart (or flow graph) in which the two branches of the conditional have different targets. Given that boolean operators short-circuit, they are control flow elements rather than simple expressions, and they need to be modelled as such.

            One way to think about this is to rephrase boolean operators as instances of the ternary conditional operator. So, for example, A and B becomes A ? B : false and A or B becomes A ? true : B [Note 1]. Note that every control flow diagram has precisely two output points.

            To combine boolean expressions, just substitute into the diagram. For example, here's A AND (B OR C)

            You implement NOT by simply swapping the meaning of the two out-flows.

            If the eventual use of the boolean expression is some kind of conditional, such as an if statement or a conditional loop, you can use the control flow as is. If the boolean expression is to be saved into a variable or otherwise used as a value, you need to fill in the two outflows with code to create the relevant constant, usually a true or false boolean constant, or (in C-like languages) a 1 or 0.

            Notes:
            1. Another way to write this equivalence is A and B ⇒ A ? B : A; A or B ⇒ A ? A : B, but that is less useful for a control flow view, and also clouds the fact that the intent is to only evaluate each expression once. This form (modified to reuse the initial computation of A) is commonly used in languages with multiple "falsey" values (like Python).

            Source https://stackoverflow.com/questions/62104961

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

            Vulnerabilities

            No vulnerabilities reported

            Install stack-machine

            You can download it from GitHub.

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          • HTTPS

            https://github.com/cslarsen/stack-machine.git

          • CLI

            gh repo clone cslarsen/stack-machine

          • sshUrl

            git@github.com:cslarsen/stack-machine.git

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