C++ Source Code Analyzer Example▲
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(:
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>