Suppose I defined the BNF syntax rules for Language X. Then I can generate an AST from a piece of example code using the defined BNF. Now I want to ...
Suppose I defined the BNF syntax rules for Language X. Then I can generate an AST from a piece of example code using the defined BNF. Now I want to ...
I am trying to make a simple PEG (pegjs) grammar to parse a space separated list or a comma separated list of numbers, but I am clearly missing someth ...
Why we can output once in PEG.js? do anyone know any other way to implement many output? I am using Stack 🙂 and a function , code below: My custom ...
I am very beginner to PEGjs I need help to implement variable (identifier) declaration support to my parser. My input code look like: My PEGjs gra ...
I am trying to implement 'variable declaration future' to my parsed language. PEG.js source: My custom input source: What output I got: And ...
I want to handle string starts with number using pegjs. When I input with 1abcd it throws Expected [0-9.] or end of input but "a" found.. The expected ...
I have written the code to parse the following expression !=10 AND <=99 To using PEG.js. Please check the code sandbox. But when I parse the ...
Currently, I use '\n' to split each line (paragraph), but now, I want to make a backslash like python for change line. This is my current rule: In ...
Trying to parse a single line conditional where code tries to test the left hand is equal to the right hand. { user = {id: 'abc123'} function_nam ...
I have this lexeme: And this PEGjs grammar: In the grammar, I'm parsing a function call. This currently parses, as you can try online in the PEG ...
I'm still pretty new to PEG.js, and I'm guessing this is just a beginner misunderstanding. In trying to parse something like this: I can get a gra ...
I have identifiers that may contain dots but not as the last character. For example, I would like to parse "date.ymd" as identifier but "execute." as ...
I have another question related to How to extend default PEG.js arithmetic example to allow multiple expressions not single one? I have this grammar: ...
As part of my parser I want to add arithmetic and boolean expressions. I wanted to take default PEG.js example at https://pegjs.org/online but the pro ...
I'm working on a Peg parser. Among other structures, it needs to parse a tag directive. A tag can contain any character. If you want the tag to includ ...
I've read through a bunch of existing questions here on StackOverflow, but I can't get my grammar straight. * Note that I might add more operator p ...
I was trying to write syntax to validate the numbers between 1 and 128 but couldn't accomplish the task in peg.js although it worked in the regular ex ...
I am trying to implement a grammar for a simple if..then..else statement along with simple statements. It should be able to parse a statement like: ...
The syntax I would like to parse is of the following kind: # This is a comment # This is a block. It starts with \begin{} and ends with \end{} \begi ...
I trying to generate parser file using this code below, however the final result file parser.js does not contain the export line in spite of I have in ...