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Macros using "expanded variables"
=================================
Goals:
* Macros should be local to the block they are defined in (and if defined
at top level, they should be local to the file they are defined in)
- This means that they cannot generate top-levels!
* Macros should be defined before use
* Syntax and semantic checks should happen BEFORE the macros are expanded.
The only thing that should happen after expansion is IR generation
(and machine code generation and exec/lib file output).
- This might be tricky with Alternative 1 (below).
For the switch with case values, there should be a check whether
the switch handles all values, for example
Alternative 1:
func test()
{
switch tok {
%for %t in [newline, kw_if, kw_else] {
case %t {
...
}
}
}
}
Alternative 2:
* Use "subcase" for switch/case
* Add a special syntax for data definitions
(see table_generation_and_macros.txt)
func test()
{
switch tok {
case newline, kw_if, kw_else {
...
subcase newline { ... }
...
print(tok.name())
...
}
}
}
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