What's wrong with this YAML input?

[Gerard Murphy]

Hi,

 

I'm feeding the following YAML files to Semantic Merge as output from the FSharp plugin:-

 

---

type : file

name : C:\Users\Gerard Murphy\AppData\Local\PlasticSCM4\semanticmerge\samples\Java\Socket\src.fs

locationSpan : {start: [3,4], end: [7,0]}

footerSpan : [0, -1]

parsingErrorsDetected : False

children :

  - type : namespace

    name : Foo

    locationSpan : {start: [3,4], end: [7,0]}

    headerSpan : [0, -1]

    footerSpan : [0, -1]

 

---

type : file

name : C:\Users\Gerard Murphy\AppData\Local\PlasticSCM4\semanticmerge\samples\Java\Socket\dst.fs

locationSpan : {start: [3,4], end: [7,0]}

footerSpan : [0, -1]

parsingErrorsDetected : False

children :

  - type : namespace

    name : Boo

    locationSpan : {start: [3,4], end: [7,0]}

    headerSpan : [0, -1]

    footerSpan : [0, -1]

 

(Don't worry about the 'Java' in the path - I just placed my F# files in the samples directory to re-use the sample scripts with minimal changes).

 

Semantic Merge shows an error dialog indicating what looks like a null reference exception, see attachment below.

 

The stack trace is also attached below.

 

Do you have any pointers as to what is going wrong? While the plugin is still at a very early stage, I'm keen to make sure I've got the YAML protocol part correct before going further.

 

Three things that spring to mind immediately to me are:-

 

1. Can the headers and footers be set to the default of [0, -1], or are they required?

2. My reading of the informal specification given the Delphi plugin developers implies that I don't need to populate any terminal nodes in the YAML - is this the case?

3. Did I get a flag wrong on the command line? I am using:-

 

set mergeOptions= -ep=""C:\PlasticSCMWorkspaces\SemanticMergeFSharpPlugin\FSharpPlugin\bin\Debug\FsharpPlugin.exe"" %contributorFiles%%resultFile%%difftool%%mergetool%

 

Regards,

 

Gerard

 

 

 

 

 

[Gerard Murphy]

UPDATE: just tried putting in a placeholder header span of [1, 1]; this makes the null reference exception go away (but leads to incorrect results).

 

Hmm - OK, I'll have to translate from the line * character offset spans coming from the F# parser to character spans...

 

Leave it with me and I'll see what happens next.

 

Regards,

 

Gerard