gekorm / astprinter

A command line tool that prints the AST of a dart file.

AstPrinter

A command line tool that prints the expanded AST (Abstract Syntax Tree) of a dart file.

The above image was created using ast <path> > output.txt, then opening output.txt in Sublime Text and adding Dart syntax highlighting.

Usage

First, activate the package with pub global

pub global activate astprinter

You must manually add the pub cache bin directory to your PATH. Pub will warn you if you haven't already.

To print the AST in the console, run ast <"absolutePathToDartFile"> <Type(OPTIONAL)> <-n(OPTIONAL)>

ast "C:\Path\web\main.dart" Declaration

The optional argument Type will print all AST nodes that are subtypes of Type. Multiple types can be entered as arguments. To print Types without their subtypes append -n.

For example

 ast "C:\Path\web\main.dart" Token

will print all tokens, including StringToken, BeginToken, KeywordToken and Token. However,

 ast "C:\Path\web\main.dart" Token -n

will only print Token nodes, such as @, =, ; etc.

Features and bugs

Please file feature requests and bugs on GitHub.

astprinter's Issues

flutter astprint

Hello, I'm very glad to find your astprint article in github.

But this demo just outputs AST

How do I process the ast returned from this output?

What about the output of the revised values?

There are many articles on babel, but I haven't found one yet.

I hope I can get your help very much.

Support -noSubTypes

Add the -n argument: prints the defined Types without their subtypes.

Support multiple different Types

For example ast C:\file.dart Declaration Directive Annotation should print these types and their subtypes.