Difference between revisions of "VM for transfer"
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Darthxaher (talk | contribs) |
Darthxaher (talk | contribs) |
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push [regex] ; a_det |
push [regex] ; a_det |
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cliptl |
cliptl |
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push "<3>" ; since link-to overrides everything else, we do not need any dedicated instruction |
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; |
; for that |
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push 1 |
push 1 |
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push [regex] ; gen_mf |
push [regex] ; gen_mf |
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cliptl |
cliptl |
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push "<4>" |
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push 1 |
push 1 |
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push [regex] ; nbr_sp |
push [regex] ; nbr_sp |
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cliptl |
cliptl |
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lu 6 ; pop 6 items, concat, create lexical unit ^...$ and push back in stack |
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pushbl ; push a blank |
pushbl ; push a blank |
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Revision as of 04:59, 30 May 2010
Instruction Sets
Mnemonic | Opcode (in hex) |
Other operands | Stack [before]→[after] |
Description |
---|---|---|---|---|
push | - | value | [empty] → value | Pushes a value in the stack |
jmp | - | N/A | label → [empty] | Jumps to the label |
hlt | - | N/A | Halts the program | |
return | - | N/A | PC → [empty] | Returns from a subroutine |
Notes
- None of the macro and actions need to return anything (unlike conventional functions), so provision for returning a value (using stack) is unnecessary
Sample Translation from XML to byte-code
<out>
<chunk name="det_det_nom_adj" case="caseFirstWord">
<tags>
<tag><lit-tag v="SN"/></tag>
<tag></tag>
<tag></tag>
<tag></tag>
</tags>
<lu>
<clip pos="1" side="tl" part="lem"/>
<clip pos="1" side="tl" part="a_det"/>
<clip pos="1" side="tl" part="gen_sense_mf" link-to="3"/>
<clip pos="1" side="tl" part="gen_mf"/>
<clip pos="1" side="tl" part="nbr_sense_sp" link-to="4"/>
<clip pos="1" side="tl" part="nbr_sp"/>
</lu>
<lu>
<lit v="el"/>
<lit-tag v="det.def"/>
<clip pos="1" side="tl" part="gen_sense_mf" link-to="3"/>
<lit-tag v="pl"/>
</lu>
<lu>
<clip pos="3" side="tl" part="lemh"/>
<clip pos="3" side="tl" part="a_nom"/>
<clip pos="3" side="tl" part="gen_sense_mf" link-to="3"/>
<clip pos="3" side="tl" part="gen_mf"/>
<clip pos="3" side="tl" part="nbr_sense_sp" link-to="4"/>
<clip pos="3" side="tl" part="nbr_sp"/>
<clip pos="3" side="tl" part="lemq"/>
</lu>
<lu>
<clip pos="2" side="tl" part="lemh"/>
<clip pos="2" side="tl" part="a_adj"/>
<clip pos="2" side="tl" part="gen_sense_mf" link-to="3"/>
<clip pos="2" side="tl" part="gen_mf"/>
<clip pos="2" side="tl" part="nbr_sense_sp" link-to="4"/>
<clip pos="2" side="tl" part="nbr_sp" link-to="4"/>
<clip pos="2" side="tl" part="lemq"/>
</lu>
</chunk>
</out>
Byte-code
push "det_det_nom_adj"
pusht "SN" ; push tag: "SN" -> "<SN>", then push in the stack
pusht tipus_det ; if operand does not start/end with ", then it's a variable
; first evaluate the variable, then push in the stack
pusht gen_chunk
pusht nbr_chunk
concat 5 ; pop 5 items from stack, concat and push as one item
; code for the first lexical unit
push 1
push "^\w+" ; lem
cliptl
push 1
push [regex] ; a_det
cliptl
push "<3>" ; since link-to overrides everything else, we do not need any dedicated instruction
; for that
push 1
push [regex] ; gen_mf
cliptl
push "<4>"
push 1
push [regex] ; nbr_sp
cliptl
lu 6 ; pop 6 items, concat, create lexical unit ^...$ and push back in stack
pushbl ; push a blank
push "el"
push "<det><def>"
push "<3>"
push "<pl>"
lu 4 ; pop 4 items from the stack, create a lexical unit ^...$ and then
; push in the stack