Add CST tools #252
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Add CST tools #252
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BREAKING CHANGE: The `push` argument of `new Lexer()` is dropped, and instead its `lex()` method is now a Generator<string> that allows for the lexemes to be iterated.
BREAKING CHANGE: The `push` argument of `new Parser()` is dropped, and instead its `parse()`, `next()` and `end()` methods are now generators that allow for the parsed tokens to be iterated.
Adds a convenience method `composer.compose(tokens)`. BREAKING CHANGE: The `push` argument of `new Composer()` is dropped, and instead its `next()` and `end()` methods are now generators that allow for the parsed documents to be iterated.
BREAKING CHANGE: The public export is renamed from `tokens` to `CST`.
…ed` to mark empty values
Adds: - `CST.isCollection(token)` - `CST.isScalar(token)` - `CST.stringify(cst)` - `CST.visit(cst, visitor)`
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Closes #207
This builds on top of #253, so the diff includes its changes as well.
This renames the
tokensnamespace asCSTand adds the following functions. See the updated docs for more on their usage.CST.createScalarToken(value, ctx)– create a new tokenCST.isCollection(token)– check for block or flow collectionCST.isScalar(token)– check for block or flow scalarCST.resolveAsScalar(token, strict, onError)– get the value of a tokenCST.setScalarValue(token, value, ctx)– set the value of a tokenCST.stringify(cst)– stringify any CST contentCST.visit(cst, visitor)– custom visitor for walking through the CSTCST.visit.itemAtPath(cst, path)– Find the item atpathfromcstas the root.CST.visit.parentCollection(cst, path)– Get the immediate parent collection of the item atpathfromcstas the root.TODO: