Comments (4)
@siddharth-krishna as others have mentioned here, a bespoke parser is the best approach if you want good error recovery. F# uses a generated parser but also has a layer that sits atop it that provides a lot of these kinds of things, in addition to a tooling host that can introspect things at different points when compared to a batch compilation process. It's not really a goal of this project to offer more intricate error recovery, so I'll close this one out.
from fslexyacc.
Hi,
First of all I am not expert in this area. This is just my opinions.
I think your understanding is correct. It throws exception. When parser encounters error, it can not recognize further tokens.
If you want to count number of errors, you can restart parsing from next token of the point first error was occur, or next semicolon, newline or something.
from fslexyacc.
from fslexyacc.
Rich error reporting/recovery (which is what you're asking for) is probably the most common reason for writing your own, custom parser. Parser generators usually don't provide rich error reporting and error recovery.
Note: I've never used this specific parser generator so what I just said is a general advice.
from fslexyacc.
Related Issues (20)
- A local version of the site is mistakenly published HOT 1
- Links in documentation website are broken HOT 1
- Using F# keywords for non terminal names does not compile HOT 4
- FsLexYacc broken under .net 5.0 runtime only HOT 7
- Emit tables for better diagnostics
- Reductions table being recreated on each parser invocation
- Variables in supplied ".target" file seems undefined leading to compilation error HOT 6
- Activating case insensitive option crash the lexer generator HOT 12
- Building a project which uses FsLex/FsYacc fails when building with Visual Studio 2019 HOT 2
- Publish the ASTs and parsers for the ASTs for the FsLex and FsYacc tools to enable more robust editor tooling HOT 13
- Not an issue more like an optimization HOT 2
- Can't find the FSharp.Text.Lexing and FSharp.Text.Parsing lib? HOT 1
- Invite you to try a new series of Lex/Yacc tools HOT 9
- a syntax highlighter for fslex, fsyacc, F#
- Question: Can we get FSLex to embed a comment with the date-time that the outputs were generated? HOT 1
- Invite you to try FslexFsyacc HOT 7
- How to turn on runtime debug output
- How to get a position of a token from ParseErrorContext HOT 1
- API Documentation issues
- %% Trailer seems not supported
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