https://github.com/szhu/parsely

inputs should be easy to understand
https://github.com/szhu/parsely

Last synced: about 1 month ago
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inputs should be easy to understand

• Host: GitHub
• URL: https://github.com/szhu/parsely
• Owner: szhu
• Created: 2014-11-01T20:18:35.000Z (about 10 years ago)
• Default Branch: master
• Last Pushed: 2014-11-19T21:13:23.000Z (about 10 years ago)
• Last Synced: 2024-04-11T15:52:54.676Z (9 months ago)
• Language: C++
• Homepage:
• Size: 141 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
parsely

=======

![](https://cloud.githubusercontent.com/assets/1570168/4874405/d33421a4-6253-11e4-9cad-288253249949.png)

Parsely helps you tokenize and parse simple space-delimited files. For example, Parsely can print this tokenized version of a simple Makefile.

```

1: test:

1:       test_parsely

3: test_parsely:

3:               test_parsely.cpp

4:  g++

4:      $<

4:         -o

4:            $@

6: clean:

7:  rm

7:     test_parsely

9: .PHONY:

9:         test

9:              clean

```

Here's the minimal amount of code you need to start using Parsely:

```c++

#import "parsely.hpp"

parsely::FileParser parser(filename);

while (parser.advance_line()) {

  while (parser.next_token()) {

    do_something_with(parser.token);

  }

}

```

Parsely also helps you inform the user of incorrectly formatted files. Use `parser.here()` to print out the current token in context:

```

Oh no! An error occurred at parsely.cpp:103:38: (additional info can go here)

  oss << line_string << std::endl << zfill_to_colno() << '^' << underline_token() << std::endl;

                                     ^~~~~~~~~~~~~~~~

```

Use `require_next_token` methods to try to parse as the given data type and exit with an error if the next token doesn't match. Here's an example using `parser.require_next_token_positive(float)`:

```

error: expected a positive number at in/scene1.txt:4:25

                ltp 200 200 200 0.6 0.6 -0.6

                                        ^~~~

```

There's not much documentation right now, but there's a test program

that might help explain things. To run it, `make` and then `./test_parsely some_file`.