Support `save X, Y, Z {}` as a shortcut syntax for nested `save`s.
Chris Pressey
4 years ago
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0.17
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----
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* `save X, Y, Z { }` now allowed as a shortcut for nested `save`s.
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* Split TODO off into own file.
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* `sixtypical` no longer writes the compiled binary to standard
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output. The `--output` command-line argument should be given.
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output. The `--output` command-line argument should be given
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to get a compiled binary; otherwise only analysis is run.
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* Internal cleanups, including a hierarchy of `Outputters`.
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* All tests pass when `sixtypical` is run under Python 3.5.2.
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0.16
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Is that consistent with `st`? Well, probably it is, but we have to explain it.
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It might make more sense, then, for it to be "part of the operation" instead of "part of
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the reference"; something like `st.hi x, word`; `st.lo y, word`. Dunno.
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### Save multiple values in single block
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As a shortcut for the idiom
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save a { save var {
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...
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} }
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allow
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save a, var {
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...
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}
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### Save values to other-than-the-stack
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self.emitter.emit(CLI())
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def compile_save(self, instr):
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location = instr.locations[0]
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if location == REG_A:
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self.emitter.emit(PHA())
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self.compile_block(instr.block)
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self.emitter.emit(PLA())
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elif location == REG_X:
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self.emitter.emit(TXA())
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self.emitter.emit(PHA())
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self.compile_block(instr.block)
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self.emitter.emit(PLA())
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self.emitter.emit(TAX())
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elif location == REG_Y:
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self.emitter.emit(TYA())
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self.emitter.emit(PHA())
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self.compile_block(instr.block)
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self.emitter.emit(PLA())
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self.emitter.emit(TAY())
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else:
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src_label = self.get_label(location.name)
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self.emitter.emit(LDA(Absolute(src_label)))
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self.emitter.emit(PHA())
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self.compile_block(instr.block)
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self.emitter.emit(PLA())
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self.emitter.emit(STA(Absolute(src_label)))
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for location in instr.locations:
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if location == REG_A:
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self.emitter.emit(PHA())
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elif location == REG_X:
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self.emitter.emit(TXA())
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self.emitter.emit(PHA())
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elif location == REG_Y:
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self.emitter.emit(TYA())
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self.emitter.emit(PHA())
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else:
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src_label = self.get_label(location.name)
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self.emitter.emit(LDA(Absolute(src_label)))
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self.emitter.emit(PHA())
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self.compile_block(instr.block)
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for location in reversed(instr.locations):
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if location == REG_A:
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self.emitter.emit(PLA())
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elif location == REG_X:
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self.emitter.emit(PLA())
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self.emitter.emit(TAX())
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elif location == REG_Y:
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self.emitter.emit(PLA())
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self.emitter.emit(TAY())
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else:
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src_label = self.get_label(location.name)
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self.emitter.emit(PLA())
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self.emitter.emit(STA(Absolute(src_label)))
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