QT4 CG Dashboard

These are the open pull requests and current branches. Where possible, a summary of the changes between the pull request or branch and the latest drafts is provided with a DeltaXignia pipeline.

Open PRs:
#2387
#2386
#2383
#2379
#2376
#2373
#2372
#2364
#2363
#2362
#2350
#2345
#2313
#2266
#2247
#2160
#2071
#2019

Pull requests in descending order

PR #2387: 641 NaN/Infinity in JSON

Pull request #2387 by michaelhkay.

Addresses part of issue #641 In the JSON serialization method, NaN is output as `null`, and infinity is output as `±1e9999`. The parse-json function adds recommendations on how to achieve round-tripping of these values.

Changed files
  • specifications/xpath-functions-40/src/function-catalog.xml
  • specifications/xslt-xquery-serialization-40/src/xslt-xquery-serialization.xml

PR #2386: Add namespace declaration to environment for generated tests

Pull request #2386 by michaelhkay.

Changes the stylesheet for generating keyword and function signature tests so that the namespace prefix "output" is explicitly declared in the test environment. This prefix is used in one of the tests and it needs to be declared if the test is to work in XPath.

Changed files
  • specifications/xpath-functions-40/style/generate-keyword-test-set.xsl

PR #2383: Attempt to resolve action QT4CG-148-01

Pull request #2383 by ndw.

Per #2315: 1. Added ‘at-risk’ changes to the fn:insert-separator, array:members, and array:of-members 2. Added ‘at-risk’ changes to the XPath/XQuery section on map and array filtering 3. Added a note about what ‘at risk’ means to the status sections

Changed files
  • specifications/xpath-functions-40/src/function-catalog.xml
  • specifications/xpath-functions-40/src/xpath-functions.xml
  • specifications/xquery-40/src/expressions.xml
  • specifications/xquery-40/src/xquery-header.xml

PR #2379: Use exported schema to validate function catalogs

Pull request #2379 by ndw.

This PR adds an exported SCM version of the `fos.xsd` schema with an embedded license. Updates to the build script use it to validate all `function-catalog.xml` files. Pro: validation Con: any change to the `fos.xsd` also has to be accompanied by an update to the exported schema, which probably, only Mike or I can do.

Changed files
  • build.gradle
  • specifications/xpath-functions-40/src/fos.scm

PR #2350: 708 An alternative proposal for generators

Pull request #2350 by michaelhkay.

This proposal has two ingredients (a) a single function generate-sequence() that produces a sequence of states from an initial state and a function that computes one state from the previous state (b) a definition of pipelining (aka lazy evaluation) and (currently incomplete) rules requiring certain operations to have a pipelined implementation.

Changed files
  • specifications/xpath-functions-40/src/function-catalog.xml
  • specifications/xpath-functions-40/src/xpath-functions.xml

PR #2345: 2299 Expand pipeline to allow arrow expression in path expression

Pull request #2345 by ruv.

Fix #2299 Supersedes PR #2309 Allow an arrow expression in a path expression (and, by implication, in a simple map expression): ```xquery $x => B() / foo ! bar => C() ! baz / quz ``` This implementation does not change the relative precedence of `/` and `!`. --- In this implementation we divide `UnaryExpr` to `SignedUnaryExpr` (always with a leading unary sign) and `UnsignedUnaryExpr` (always without a leading unary sign). And the new feature is supported only in the latter case, since in the former case we cannot avoid ambiguity: - an expression `- aaa => B() / ccc => D()` can be parsed both: - as `(- aaa ) => B() / ccc => D()` - and as `- ( aaa => B() / ccc ) => D()` - because `aaa => B() ` is the left-hand side operand of `/`; see also a [comment](https://github.com/qt4cg/qtspecs/issues/2299#issuecomment-3544885512).

Changed files
  • specifications/grammar-40/xpath-grammar.xml
  • specifications/xquery-40/src/expressions.xml

PR #2313: 2298 XQFO rules: definition of default values

Pull request #2313 by ChristianGruen.

@michaelhkay I have decided to create this PR, even if we are still discussing its necessity. I hope it clarifies where I see the need for unifications in the current presentation. In general, it follows the proposal that I developed in my thoughts in #2298. In particular, it fixes various small inconsistencies in the prose. I have stumbled upon related editorial issues that I haven’t worked at yet: [1.6 Function calls](https://qt4cg.org/specifications/xpath-functions-40/Overview.html#id-function-calls) is outdated, for example the `fn:function-name` (which could be confused with the actually existing function with the same name) should have an optional parameter. Next, the text talks about “two signatures of `fn:string`”; and it is not clear why the “zero or one values” and “zero or more values” cases are presented in more detail, whereas “one or more” is missing. The reason is probably simple: It seems to stem back to version 3.1. Closes #2298

Changed files
  • specifications/xpath-functions-40/src/function-catalog.xml
  • specifications/xpath-functions-40/src/xpath-functions.xml

PR #2247: 716 Deferred Evaluation in XPath - the f:generator record

Pull request #2247 by dnovatchev.

This PR introduces the notion of deferred evaluation and presents the tool to achieve this - the built-in named record type `f:generator`. - Two major use cases are presented. - The fields of `f:generator` are defined. - All system-provided methods of `f:generator` are defined. - Examples of using each of the methods of `f:generator` are provided. - The formal equivalents of each of the system-provided methods of `f:generator` are provided in a separate appendix. <img width="1920" height="1080" alt="image" src="https://github.com/user-attachments/assets/65d04952-794f-4a81-ae64-c96217a9812d" />

Changed files
  • schema/xsl-query.dtd
  • specifications/xpath-functions-40/src/function-catalog.xml
  • specifications/xpath-functions-40/src/xpath-functions.xml

PR #2160: 2073 data model changes for JNodes and Sequences

Pull request #2160 by michaelhkay.

This is a first draft of a PR, giving the data model changes only, for a change to the JNode model affecting maps and arrays with sequence-valued entries. A sequence of length 2 or more now has children representing the items in the sequence. Although there is still an asymmetry between sequences of length 1 and longer sequences, it is more manageable than i the previous model.

Changed files
  • specifications/xpath-datamodel-40/src/xpath-datamodel.xml

PR #2071: 77c deep update

Pull request #2071 by michaelhkay.

Proposes a new fn:update function that can handle both JNodes and XNodes. (this is a branch on a branch, so I don't know how well the diff'ing will work; but look in F&O for the fn:update function)

Changed files
  • specifications/grammar-40/xpath-grammar.xml
  • specifications/image-sources/item-types.xml
  • specifications/xpath-datamodel-40/src/xpath-datamodel.xml
  • specifications/xpath-functions-40/src/function-catalog.xml
  • specifications/xpath-functions-40/src/xpath-functions.xml
  • specifications/xquery-40/src/expressions.xml
  • specifications/xslt-xquery-serialization-40/src/xslt-xquery-serialization.xml

PR #2019: 1776: XSLT template rules for maps and array

Pull request #2019 by michaelhkay.

Currently work In progress, committed so that the draft can be reviewed. Changes in three main areas: - Pattern syntax: patterns such as `?item` and `?parent?item` are defined to match items in a map by their key - Built-in template rules for on-no-match="shallow-copy-all". Revisits the built in template rules for this scenario. - General revision of the processing model for xsl:apply-templates applied to a tree of maps and arrays.

Changed files
  • specifications/grammar-40/xpath-grammar.xml
  • specifications/xpath-functions-40/src/function-catalog.xml
  • specifications/xslt-40/src/xslt.xml