Package gavo :: Package stc :: Module stcxgen

Module stcxgen

Converting ASTs to/from STC-X.

The basic idea for conversion to STC-X is that for every ASTNode in dm, there is a serialize_<classname> function returning some xmlstan. In general they should handle the case when their argument is None and return None in that case.

Traversal is done manually (i.e., by each serialize_X method) rather than globally since the children in the AST may not have the right order to keep XSD happy, and also since ASTs are actually a bit more complicated than trees (e.g., coordinate frames usually have multiple parents).

Classes
	Context is a generation context.

Functions

addId(node)
adds a synthetic id attribute to node unless it's already there.

source code

strOrNull(val)

source code

isoformatOrNull(val)

source code

serialize_RefPos(node, context)

source code

serialize_SpaceFrame(node, context)

source code

serialize_TimeFrame(node, context)

source code

serialize_SpectralFrame(node, context)

source code

serialize_RedshiftFrame(node, context)

source code

serialize_CoordSys(node, context)

source code

serialize_TimeCoo(node, context)

source code

serialize_RedshiftCoo(node, context)

source code

serialize_SpectralCoo(node, context)

source code

serialize_SpaceCoo(node, context)

source code

serialize_VelocityCoo(node, context)

source code

serialize_TimeInterval(node, context)

source code

serialize_SpectralInterval(node, context)

source code

serialize_RedshiftInterval(node, context)

source code

serialize_SpaceInterval(node, context)

source code

serialize_VelocityInterval(node, context)

source code

serialize_AllSky(node, context)

source code

serialize_Circle(node, context)

source code

serialize_Ellipse(node, context)

source code

serialize_Box(node, context)

source code

serialize_Polygon(node, context)

source code

serialize_Convex(node, context)

source code

serialize_MultiCompound(node, context)

source code

serialize_Intersection(node, context)

source code

serialize_Union(node, context)

source code

serialize_Difference(node, context)

source code

serialize_Not(node, context)

source code

makeAreas(rootNode, context)
serializes the areas contained in rootNode.

source code

nodeToStan(astNode)
returns xmlstan for an AST node.

source code

astToStan(rootNode, stcRoot)
returns STC stan for the AST rootNode wrapped in the stcRoot element.

source code

getSTCXProfile(rootNode)

source code

Variables
	wiggleClasses = `{'error': [(<class 'gavo.stc.stcx.dynamicallyD...`
	__package__ = `'gavo.stc'`

Function Details

makeAreas(rootNode, context)

source code

serializes the areas contained in rootNode.

This requires all kinds of insane special handling.

astToStan(rootNode, stcRoot)

source code

returns STC stan for the AST rootNode wrapped in the stcRoot element.

The first coordinate system defined in the AST is always used for the embedded coordinates and areas.

Variables Details

wiggleClasses

Value:

{'error': [(<class 'gavo.stc.stcx.dynamicallyDefined'>, None, None),
           (<class 'gavo.stc.stcx.dynamicallyDefined'>,
            <class 'gavo.stc.stcx.dynamicallyDefined'>,
            <class 'gavo.stc.stcx.dynamicallyDefined'>),
           (<class 'gavo.stc.stcx.dynamicallyDefined'>,
            <class 'gavo.stc.stcx.dynamicallyDefined'>,
            <class 'gavo.stc.stcx.dynamicallyDefined'>)],
 'pixSize': [(<class 'gavo.stc.stcx.dynamicallyDefined'>, None, None),
...