- Qt 5.5
- Qt XML Patterns
- C++ Source Code Analyzer Example
- reportGlobals.xq Example File
- Qt 5.5.1 Reference Documentation

# reportGlobals.xq Example File

xquery/globalVariables/reportGlobals.xq

    (:
        This XQuery loads a GCC-XML file and reports the locations of all
        global variables in the original C++ source. To run the query,
        use the command line:

        xmlpatterns reportGlobals.xq -param fileToOpen=globals.gccxml -output globals.html

        "fileToOpen=globals.gccxml" binds the file name "globals.gccxml"
        to the variable "fileToOpen" declared and used below.
    :)

    declare variable $fileToOpen as xs:anyURI external;
    declare variable $inDoc as document-node() := doc($fileToOpen);

    (:
       This function determines whether the typeId is a complex type,
       e.g. QString. We only check whether it's a class. To be strictly
       correct, we should check whether the class has a non-synthesized
       constructor. We accept both mutable and const types.
    :)
    declare function local:isComplexType($typeID as xs:string) as xs:boolean
    {
        exists($inDoc/GCC_XML/Class[@id = $typeID])
        or
        exists($inDoc/GCC_XML/Class[@id = $inDoc/GCC_XML/CvQualifiedType[@id = $typeID]/@type])
    };

    (:
       This function determines whether the typeId is a primitive type.
    :)
    declare function local:isPrimitive($typeId as xs:string) as xs:boolean
    {
        exists($inDoc/GCC_XML/FundamentalType[@id = $typeId])
    };

    (:
       This function constructs a line for the report. The line contains
       a variable name, the source file, and the line number.
    :)
    declare function local:location($block as element()) as xs:string
    {
        concat($inDoc/GCC_XML/File[@id = $block/@file]/@name, " at line ", $block/@line)
    };

    (:
       This function generates the report. Note that it is called once
       in the <body> element of the <html> output.

       It ignores const variables of simple types but reports all others.
    :)
    declare function local:report() as element()+
    {
        let $complexVariables as element(Variable)* := $inDoc/GCC_XML/Variable[local:isComplexType(@type)]
        return if (exists($complexVariables))
               then (<p xmlns="http://www.w3.org/1999/xhtml/">Global variables with complex types:</p>,
                     <ol xmlns="http://www.w3.org/1999/xhtml/">
                        {
                            (: For each Variable in $complexVariables... :)
                            $complexVariables/<li><span class="variableName">{string(@name)}</span> in {local:location(.)}</li>
                        }
                     </ol>)
               else <p xmlns="http://www.w3.org/1999/xhtml/">No complex global variables found.</p>

        ,

        let $primitiveVariables as element(Variable)+ := $inDoc/GCC_XML/Variable[local:isPrimitive(@type)]
        return if (exists($primitiveVariables))
               then (<p xmlns="http://www.w3.org/1999/xhtml/">Mutable global variables with primitives types:</p>,
                     <ol xmlns="http://www.w3.org/1999/xhtml/">
                        {
                            (: For each Variable in $complexVariables... :)
                            $primitiveVariables/<li><span class="variableName">{string(@name)}</span> in {local:location(.)}</li>
                        }
                     </ol>)
               else <p xmlns="http://www.w3.org/1999/xhtml/">No mutable primitive global variables found.</p>
    };

    (:
        This is where the <html> report is output. First
        there is some style stuff, then the <body> element,
        which contains the call to the \c{local:report()}
        declared above.
    :)
    <html xmlns="http://www.w3.org/1999/xhtml/" xml:lang="en" lang="en">
        <head>
            <title>Global variables report for {$fileToOpen}</title>
        </head>
        <style type="text/css">
            .details
            {{
                text-align: left;
                font-size: 80%;
                color: blue
            }}
            .variableName
            {{
                font-family: courier;
                color: blue
            }}
        </style>

        <body>
            <p class="details">Start report: {current-dateTime()}</p>
            {
                local:report()
            }
            <p class="details">End report: {current-dateTime()}</p>
        </body>

    </html>