62 lines
1.3 KiB
Python
62 lines
1.3 KiB
Python
#!/usr/bin/env python3
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from ichor import isa
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from ichor.assembler import FuncBuilder
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import pytest
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@pytest.fixture
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def builder() -> FuncBuilder:
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return FuncBuilder()
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def test_forwards_label(builder: FuncBuilder):
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l = builder.make_label()
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builder.write(isa.GOTO(l))
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builder.write(isa.DROP(0)) # no-op
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builder.write(l)
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builder.write(isa.DROP(0)) # no-op
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instrs = builder.build()
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assert instrs == [
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isa.GOTO(2),
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isa.DROP(0),
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isa.DROP(0),
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]
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def test_backwards_label(builder: FuncBuilder):
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l = builder.make_label()
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builder.write(l)
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builder.write(isa.DROP(0)) # no-op
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builder.write(isa.GOTO(l))
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instrs = builder.build()
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assert instrs == [
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isa.DROP(0),
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isa.GOTO(0),
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]
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def test_self_label(builder: FuncBuilder):
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l = builder.make_label()
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builder.write(isa.DROP(0)) # no-op
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builder.write(l)
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builder.write(isa.GOTO(l))
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instrs = builder.build()
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assert instrs == [
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isa.DROP(0),
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isa.GOTO(1),
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]
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def test_local_label(builder: FuncBuilder):
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s0 = builder.mark_slot()
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builder.write(isa.SLOT(s0))
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s999 = builder.mark_slot(target=999)
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builder.write(isa.SLOT(s999))
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instrs = builder.build()
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assert instrs == [
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isa.SLOT(0),
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isa.SLOT(999),
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]
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