Implement message cascade #176
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This change introduces support for Smalltalk message cascades, i.e., syntax to send multiple messages to the same receiver be listing them with ; as separator. - add lexing of semicolon - includes basic tests - uses a normal immutable local to store the receiver, should perhaps become an internal variable instead. Benefit of local is that we see it in the debugger - I decided against an implementation with a separate node, because it would require introducing an executeWithReceiver method, which seems a more substantial change than simply desugaring into existing constructs - the replacing of the lastReceiver is a bit of a hack, and requires the previous message to adopt its children during parsing. However, this seems to be a simpler solution than delaying the assembly of those expressions Signed-off-by: Stefan Marr <git@stefan-marr.de>
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This change introduces support for Smalltalk message cascades, i.e., syntax to send multiple messages to the same receiver by listing them with
;as separator.I decided against an implementation with a separate node, because it would require introducing an executeWithReceiver method, which seems a more substantial change than simply desugaring into existing constructs.
Replacing the lastReceiver is a bit of a hack, and requires the previous message to adopt its children during parsing. However, this seems to be a simpler solution than delaying the assembly of those expressions.