syntax-parser | - Sql Parser Demo | Parser library

by ascoders TypeScript Version: v1.0.15 License: No License

X-Ray Key Features Code Snippets Community Discussions(7)Vulnerabilities Install Support

kandi X-RAY | syntax-parser Summary

syntax-parser is a TypeScript library typically used in Utilities, Parser applications. syntax-parser has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Light and fast 🚀parser! With zero dependents. - Sql Parser Demo added!

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Support

syntax-parser has a low active ecosystem.

It has 418 star(s) with 44 fork(s). There are 16 watchers for this library.

It had no major release in the last 6 months.

There are 6 open issues and 9 have been closed. On average issues are closed in 218 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of syntax-parser is v1.0.15

Quality

syntax-parser has 0 bugs and 0 code smells.

Security

syntax-parser has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

syntax-parser code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

syntax-parser does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

syntax-parser 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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syntax-parser Key Features

No Key Features are available at this moment for syntax-parser.

syntax-parser Examples and Code Snippets

No Code Snippets are available at this moment for syntax-parser.

Community Discussions

Trending Discussions on syntax-parser

Is it possiable to encapsulate a splicing syntax into syntax-class?

Is there any way to convert (list 1 2 3) to just 1 2 3 in Racket(Scheme)?

Scheme/Racket: How to do repeating in defining syntax

Does defining all new syntaxes hurt performance in Scheme, Racket?

Scheme/Racket: Syntax parser matching confused

Scheme/Racket: How to add keyword to define-syntax-parser

Change variable outside of lambda in Scheme/Racket

QUESTION

Is it possiable to encapsulate a splicing syntax into syntax-class?

Asked 2021-Aug-26 at 16:59

For example, the following program

...

ANSWER

Answered 2021-Aug-26 at 16:59

You need to use ~seq in the definition of bindings:

Source https://stackoverflow.com/questions/68940321

QUESTION

Is there any way to convert (list 1 2 3) to just 1 2 3 in Racket(Scheme)?

Asked 2020-Apr-26 at 09:34

#lang racket
(require syntax/parse/define)
(require racket/draw)

(define thickness 1.99)

(define color-set 
  (hash
   `black `(0 0 0)
   `white `(255 255 255)
   `light-grey `(229 229 229)
   `dark-grey `(153 153 153)))

(define font-set
  (hash
    `default (make-font #:size 17 #:family 'script #:weight '550 #:smoothing `smoothed) 
    `index (make-font #:size 11 #:family 'modern #:weight '400 #:smoothing `smoothed)
    `comment (make-font #:size 11 #:family 'modern #:weight '400 #:smoothing `smoothed)))


(define-syntax-parser grab
  #:datum-literals (pen brush font)

  [(_ pen color alpha)
   (send dc set-pen (make-color ,@(hash-ref color-set (quasiquote color)) alpha))]

  [(_ pen color)
   (send dc set-pen (make-color ,@(hash-ref color-set (quasiquote color)) 1))]

  [(_ brush color style)
   (send dc set-brush (make-color ,@(hash-ref color-set (quasiquote color)) alpha) (quasiquote style))]

  [(_ brush color)
   (send dc set-brush (make-color ,@(hash-ref color-set (quasiquote color)) alpha) 'solid)]

  [(_ font mode)
   (send dc set-font (hash-ref font-set (quasiquote mode)))])

...

ANSWER

Answered 2020-Apr-26 at 09:34

For starters most of the time you should be using quotes, not quasiquotes. For example:

Source https://stackoverflow.com/questions/61437418

QUESTION

Scheme/Racket: How to do repeating in defining syntax

Asked 2020-Feb-17 at 02:41

I can define the infix '+' as below in Racket:

...

ANSWER

Answered 2020-Feb-17 at 02:41

What you want is a combination of ~seq and ...+.

Source https://stackoverflow.com/questions/60254479

QUESTION

Does defining all new syntaxes hurt performance in Scheme, Racket?

Asked 2020-Feb-13 at 18:44

Im creating a new lang with Racket define-syntax-parser. A lot of new syntaxes and even replacing fundamental forms.

I intend to use the new lang in production but dont know whether too many new syntaxes hurt performance.

Should I compile to binary or sort of that?

...

ANSWER

Answered 2020-Feb-13 at 18:44

TL; DR: No performance penalty

The syntax you intrduce gets expanded at macro expansion time. This means that if you do raco make it would have replaced all the use of macros with their expanded forms.

Sometimes when making features your expanded code might be more complex than how you would have written the code initially. This also might be removed by the jit compiler as it would with other unoptimized code.

Sometimes your feature required more complexity that cannot be reduced to it's simplest form. In this case you might have a performance loss.

As an example would be overriding #%app to do array and list access where you normally would do (vector-ref vec 3) where the syntax (vec 3) can mean both array access and application. The expansion might become (if (racket:#%app vector? vec) (racket:#%app vector-ref vec 3) (racket:#%app vec 3)) and if the system cannot conclude that it is not vector? it will do the test on every application. If one would repurpose [ and ] such that they just are array access [vec 5] can easily be turned into (vector-ref vec 3) without (vec 5) having performance hits, but that also means the syntax tells you what it is and is less general.

Source https://stackoverflow.com/questions/60187179

QUESTION

Scheme/Racket: Syntax parser matching confused

Asked 2020-Feb-13 at 06:26

This code runs fine:

...

ANSWER

Answered 2020-Feb-13 at 06:26

I found it out how, the when is defined first before the if in define-syntax-parser, and its syntax include ellipsis ... which matches everything following it, including the : in if-else.

Fixed it as below, put syntax for if first:

Source https://stackoverflow.com/questions/60201150

QUESTION

Scheme/Racket: How to add keyword to define-syntax-parser

Asked 2020-Feb-13 at 03:30

I can define syntax for for loop this way:

...

ANSWER

Answered 2020-Feb-13 at 03:30

I found out how, I need to add ~optional and ~seq to the syntax:

Source https://stackoverflow.com/questions/60199095

QUESTION

Change variable outside of lambda in Scheme/Racket

Asked 2020-Feb-09 at 09:48

The examples from the doc of Racket come with lambda always: https://docs.racket-lang.org/syntax/Defining_Simple_Macros.html

And my define-syntax-parser is like this:

...

ANSWER

Answered 2020-Feb-09 at 09:31

Macro can expand to anything, not just lambda.

Source https://stackoverflow.com/questions/60133713

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

Vulnerabilities

No vulnerabilities reported

Install syntax-parser

You can download it from GitHub.

Support

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