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Jul 24, 2021 - Go
lexer
A grammar describes the syntax of a programming language, and might be defined in Backus-Naur form (BNF). A lexer performs lexical analysis, turning text into tokens. A parser takes tokens and builds a data structure like an abstract syntax tree (AST). The parser is concerned with context: does the sequence of tokens fit the grammar? A compiler is a combined lexer and parser, built for a specific grammar.
Here are 952 public repositories matching this topic...
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Jul 19, 2021 - C
It would be nice if subpatterns could be used within subpatterns.
#[derive(Logos, Copy, Clone, Debug)]
#[logos(subpattern a = r"[a-zA-Z!$%&*/:<=>?^_~]")]
#[logos(subpattern b = r"(?&a)|[0-9+\-.@]")]
pub enum Token {
#[error]
Error,
// ...
}Currently, this is not supported and causes a regex parse error.
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Jun 24, 2021 - C
Test case
typedef dv_base_env_cov #(.CFG_T(tl_agent_env_cfg)) tl_agent_env_cov;Actual output
typedef dv_base_env_cov#(.CFG_T(tl_agent_env_cfg)) tl_agent_env_cov;Expected or suggested output (original formatting)
typedef dv_base_env_cov #(.CFG_T(tl_agent_env_cfg)) tl_agent_env_cov;Verible version:
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Jun 4, 2021 - JavaScript
Prepare the parser to PHP 8 :
Work In Progress as RFC are not yet closed
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Jul 1, 2021 - Java
Would it be possible to have the regex parser support character classes like \w within other character classes? I had a regex pattern earlier that used the character class [0-9a-zA-Z_\.-], and I attempted to simplify it with [\w\.\-]. I didn't notice this library doesn't support doing that, and was wondering just how difficult that would be to implement. For the time being i'm just expanding
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Oct 14, 2019 - TypeScript
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Mar 20, 2020 - Swift
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Sep 25, 2018 - Swift
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May 25, 2018 - C++
Flex has a directive %option caseless to lex tokens in a case insensitive way.
Is there currently a way (besides using regular expressions) to accomplish the same?
It seems like graphql parser doesn't like graphql comments in the schemas? This is using the federated proxy example.
build base schema: parse graphql document string: external: unexpected token - got: COMMENT want one of: [], locations:
remote schema
input UserInput {
userID: Int
# Some comment
place: String
}
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Jan 9, 2020 - Rust
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Feb 7, 2018 - Swift
- Wikipedia
- Wikipedia
Everything in diagrams.css should be scoped to some wrapping css class, because as is it cannot be bundled with the rest of an app's css because of styles like this:
Curre