[Swift-user] NullPointerException

[Ben Clifford]

something not right in the compiler - it should be either working or 
giving a more meaningful error message. can you send the source file that 
causes this?

On Tue, 26 Aug 2008, Andriy Fedorov wrote:

> On Tue, Aug 26, 2008 at 3:45 PM, Mihael Hategan <hategan at mcs.anl.gov> wrote:
> > On Tue, 2008-08-26 at 15:29 -0400, Andriy Fedorov wrote:
> >> Hi,
> >>
> >> Is there any advice on how I can debug the following error while
> >> trying to run a Swift script:
> >>
> >> Could not compile SwiftScript source: java.lang.NullPointerException
> >>
> >> (this is the only error message I get)
> >
> > The -d flag to swift should provide more details (perhaps a stack
> > trace).
> >
> 
> Yes, thanks. Still, no idea how to connect this error with my Swift source:
> 
> Could not compile SwiftScript source: java.lang.NullPointerException
> Full parser exception
> java.lang.NullPointerException
>         at org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:515)
>         at org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:458)
>         at org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86)
>         at org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:93)
>         at org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:693)
>         at org.antlr.stringtemplate.StringTemplate.toString(StringTemplate.java:1412)
>         at org.griphyn.vdl.toolkit.VDLt2VDLx.compile(VDLt2VDLx.java:64)
>         at org.griphyn.vdl.toolkit.VDLt2VDLx.compile(VDLt2VDLx.java:46)
>         at org.griphyn.vdl.karajan.Loader.compile(Loader.java:207)
>         at org.griphyn.vdl.karajan.Loader.main(Loader.java:123)
> Exception when compiling ../pe_script_500-1.swift
> org.griphyn.vdl.toolkit.VDLt2VDLx$ParsingException: Could not compile
> SwiftScript source: null
>         at org.griphyn.vdl.toolkit.VDLt2VDLx.compile(VDLt2VDLx.java:68)
>         at org.griphyn.vdl.toolkit.VDLt2VDLx.compile(VDLt2VDLx.java:46)
>         at org.griphyn.vdl.karajan.Loader.compile(Loader.java:207)
>         at org.griphyn.vdl.karajan.Loader.main(Loader.java:123)
> Caused by:
> java.lang.NullPointerException
>         at org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:515)
>         at org.antlr.stringtemplate.language.ASTExpr.writeAttribute(ASTExpr.java:458)
>         at org.antlr.stringtemplate.language.ActionEvaluator.action(ActionEvaluator.java:86)
>         at org.antlr.stringtemplate.language.ASTExpr.write(ASTExpr.java:93)
>         at org.antlr.stringtemplate.StringTemplate.write(StringTemplate.java:693)
>         at org.antlr.stringtemplate.StringTemplate.toString(StringTemplate.java:1412)
>         at org.griphyn.vdl.toolkit.VDLt2VDLx.compile(VDLt2VDLx.java:64)
>         ... 3 more
> 
> 
> >
> >
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>