mirror of https://github.com/zeldaret/tp.git
50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
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from dataclasses import dataclass, field
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from ...builder import AsyncBuilder
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from .base import *
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@dataclass(eq=False)
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class ReturnFunction(Function):
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def export_return_value(self, symbol_table):
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assert False
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async def export_function_body(self, exporter, builder: AsyncBuilder):
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return_value = self.export_return_value(exporter.gst)
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await builder.write(f" {{")
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if return_value:
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await builder.write(f"\treturn {return_value};")
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else:
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await builder.write(f"\t/* empty function */")
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await builder.write(f"}}")
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@dataclass(eq=False)
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class CustomReturnFunction(ReturnFunction):
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return_value: str = None
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def export_return_value(self, symbol_table):
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return self.return_value
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@dataclass(eq=False)
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class SymbolReturnFunction(ReturnFunction):
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symbol_addr: int = 0
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load_or_reference: bool = True
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load_type: Type = None
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cast_type: Type = None
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def gather_references(self, context, valid_range):
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self.references = set([ self.symbol_addr ])
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def export_return_value(self, symbol_table):
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symbol = symbol_table[-1, self.symbol_addr]
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assert symbol
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name = symbol.cpp_reference(self, self.symbol_addr)
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load_type = PointerType(self.load_type)
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dereference = ""
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cast = ""
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if self.load_or_reference:
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dereference = "*"
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if self.cast_type:
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cast = f"({self.cast_type.type()})"
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return f"{cast}{dereference}({load_type.type()})({name})"
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