forked from glen/fostr
Glen Whitney
7c69b82484
Adds ! operator and !! expression, with Python code gen and an item in tour. Still needs: other languages, check generated docs, and addition of standard input to test scheme.
41 lines
1002 B
Plaintext
41 lines
1002 B
Plaintext
module python
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imports libstrategolib signatures/- util
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rules
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py: TopLevel(x) -> $[## Fostr preamble
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import sys
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class StdioC:
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def gets(self, v):
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print(v, file=sys.stdout, end='')
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return self
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def emit(self):
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return input()
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def to(data,strm):
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strm.gets(data)
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return data
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Stdio = StdioC()
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## End of preamble
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[x]]
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py: Stream() -> $[Stdio]
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py: Int(x) -> x
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py: LitString(x) -> $[r[x]]
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py: EscString(x) -> x
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py: Sum(x,y) -> $[[x] + [y]]
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py: Concat(x,y) -> $[[x] + [y]]
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py: Gets(x, y) -> $[[x].gets([y])]
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py: To(x, y) -> $[to([x],[y])]
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py: Emits(x) -> $[[x].emit()]
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py: Terminate(x) -> $[[x];]
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py: Sequence(l) -> <join(|"\n")>l
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strategies
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python = bottomup(try(py))
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// Interface python code generation with editor services and file system
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to-python: (selected, _, _, path, project-path) -> (filename, result)
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with filename := <guarantee-extension(|"py")> path
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; result := <python> selected
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