copper | An integrated context-aware scanner and parser generator | Parser library
kandi X-RAY | copper Summary
kandi X-RAY | copper Summary
Copper is a Java-based integrated scanner and parser generator developed by the Minnesota Extensible Language Tools (MELT) research group at the University of Minnesota with assistance from the National Science Foundation, IBM, the McKnight Foundation, and Adventium Labs. It serves as the parsing back-end of Silver, another MELT tool. Copper employs the LALR(1) parsing algorithm in conjunction with a modified scanning algorithm, context-aware scanning, which uses parsing context to resolve lexical ambiguities. This allows for more declarative parser specifications, especially of embedded and extensible languages. It also provides an analysis for use with extensible languages. The pass/fail analysis is applied independently to each language extension, and any combination of passing extensions is guaranteed to compile without parse-table conflicts. This lets any end-user pick and choose extensions in the same manner as libraries.
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Top functions reviewed by kandi - BETA
- Transition character
- Return the numeric index of the last character
- Find the codepoint
- Returns 1 if the codepoint
- Generates a LAL engine
- Build the subfa for the given regexes
- Sets the parse table cell
- Execute compiler parameters
- Executes compiler parameters
- Outputs terminal information to the output stream
- Starts the copper application
- Output the init functions
- Visit a terminal bean
- Check the syntax for all ambiguities
- Check for ambiguities in the given grammar
- Removes extraneous ranges
- Builds the source
- Generate symbol maps
- Filter a terminal
- Checks that a production is valid
- Runs the engine
- Output init functions
- Generate the NFA scanner
- Transition the character
- Full symmatrix function
- Symbol_add_0
copper Key Features
copper Examples and Code Snippets
Community Discussions
Trending Discussions on copper
QUESTION
Here's a codepen demonstrating a treetable with groups:
https://codepen.io/dharmatech/full/mdWGbox
ScreenshotScreenshot of the above treetable:
The IssueOnly some of the columns are shown; there are many more available. However, note that there is no horizontal scrollbar shown at the bottom to bring the other columns into view.
Is there a way to turn on a horizontal scrollbar?
Approaches I've exploredI've tried each of these:
...ANSWER
Answered 2021-Jun-11 at 09:04Your code is correct. And TreeTable does show all columns, you just miss the horizontal scroll at bottom of the grid.
To fix the situation, you need to
- init UI in container ( currently it is atached to the body ). To do so you need to add
container
property to the UI configuration
QUESTION
I'm having a search bar that filters the list with their name(eg:orange, copper). Is there any way to filter the results by using their class attribute.
...ANSWER
Answered 2021-Jun-05 at 12:46Since you are going to enter input with spaces, so it would be better to make it into an array. Also, you have classes in a
i.e using a.classList
that will return classes in an array-like data structure.
Now you're having two arrays, so you can filter the result if all input classes array exists in any of the a
classes.
The best part is you can search even in reverse order like car animal
and it would give you Jaguar
.
It searches partially and also search for partial input also like a c
or c a
gives Jaguar
.
QUESTION
I'm trying to find the most efficient way of looping through an array of strings, and then click a corresponding checkbox input that matches any of the values found within the array.
I came up with the below, which works, but I think there's probably a more efficient solution. Anyone have any tips to help me clean this up?
...ANSWER
Answered 2021-May-19 at 21:48Loop through the array.
QUESTION
i have a question, i have follow JSON file:
...ANSWER
Answered 2021-May-19 at 13:08the solution is:
QUESTION
Hello all Sheet users out there.
I have a sheet with a list of resources with their production and usage being calculated on the left side and the overall prod/use being monitored on the right side.
...ANSWER
Answered 2021-May-18 at 03:22QUESTION
I am trying to find a recursive solution to find how many units make up a whole. Example of dictionary I am working with:
...ANSWER
Answered 2021-May-14 at 16:44The solution is to have a recipes
dict that gives you the recipe for each item in a consistent way. Having an extra level of indirection in half of your recipes (the parts
dict) makes it difficult to write one block of code that can handle either type of recipe. Keep it simple:
QUESTION
ANSWER
Answered 2021-May-13 at 20:08If you want a media query like solution for javascript you have to listen for the resize
event with an event listener and call the slide function showSlides()
in it. In the slide function you have to wrap the code in the if statement that asks for window.innerWidth
. Additionally you have to define an else block for showing the images again.
QUESTION
Given the following dict (part of very long list of dicts):
...ANSWER
Answered 2021-May-13 at 15:09here you go
QUESTION
I am trying to scrape a couple of tables from this website which are hidden under an expand button. However it looks like the table structure is really weird and I'm having trouble.
my code so far is
...ANSWER
Answered 2021-May-12 at 15:31Make your life easier and just dump the HTML
to pandas
. All the tables are there and you can access them either with a for loop
or via indexing
.
Here's how:
QUESTION
My aim is to make a function where you input the variable you want forecasted, and then use cross validation on multiple types of models (ie. Naive, ETS, Mean), then using the 'pull' function I will pull out the model with the lowest RMSE, then I will forecast 1 step ahead with the best model.
However, I am having trouble with the second last line, using the character value 'best.model' as the input for the model when forecasting. (Error is below the code, which you an run yourself).
Here is the code to make more sense:
...ANSWER
Answered 2021-May-11 at 10:34Here is a solution that takes a slightly different approach, first defining a named list of models to choose from and then using best.model
to choose from the list. This is generally preferable to getting bogged down by non-standard-evaluation. Note also that I've used {{
to 'pipe' unquoted arguments. You'll notice I've also changed some object names. This is because you should generally avoid .
in object names to avoid confusion with the S3
system of object-oriented programming in R.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install copper
You can use copper like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the copper component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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