Package com.google.common.css.compiler.ast

Interface GssFunction

All Known Implementing Classes:

GssFunctions.AddHsbToCssColor, GssFunctions.AddToNumericValue, GssFunctions.AdjustBrightness, GssFunctions.BaseBlendColors, GssFunctions.BlendColorsHsb, GssFunctions.BlendColorsRgb, GssFunctions.Concat, GssFunctions.Darken, GssFunctions.DesaturateColor, GssFunctions.Div, GssFunctions.Greyscale, GssFunctions.Lighten, GssFunctions.MakeContrastingColor, GssFunctions.MakeMutedColor, GssFunctions.MakeTranslucent, GssFunctions.MaxValue, GssFunctions.MinValue, GssFunctions.Mult, GssFunctions.SaturateColor, GssFunctions.SelectFrom, GssFunctions.Spin, GssFunctions.SubtractFromNumericValue

public interface GssFunction

Encapsulates a custom function callable from GSS stylesheet files.

Method Summary

Modifier and Type	Method	Description
List<CssValueNode>	getCallResultNodes(List<CssValueNode> args, ErrorManager errorManager)	Processes a list of function call arguments and returns a list of CssNodes representing this call's output, which replace the input nodes in the AST.
String	getCallResultString(List<String> args)	Processes a list of strings as function arguments and returns a string result.
Integer	getNumExpectedArguments()	Returns the number of parsed arguments that this function takes, or null if the number of arguments may vary.

Method Details

getNumExpectedArguments

Integer getNumExpectedArguments()

Returns the number of parsed arguments that this function takes, or null if the number of arguments may vary.

getCallResultNodes

List<CssValueNode> getCallResultNodes(List<CssValueNode> args,
 ErrorManager errorManager)
                               throws GssFunctionException

Processes a list of function call arguments and returns a list of CssNodes representing this call's output, which replace the input nodes in the AST. Errors will be reported to the ErrorManager.

Throws:

GssFunctionException

getCallResultString

String getCallResultString(List<String> args)
                    throws GssFunctionException

Processes a list of strings as function arguments and returns a string result. Errors are reported by throwing GssFunctionException.

Throws:

GssFunctionException