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#### get_lookups
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这里的四个lookup, 类型为LookupEntry::State和LookupEntry::Arithmetic, 具体可以参考Witness Core Row部分的说明。
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这里的5个lookup, 类型为LookupEntry::State和LookupEntry::Arithmetic, 具体可以参考：
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参考代码如下:
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```rust
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fn get_lookups(
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&self,
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config: &ExecutionConfig<F, NUM_STATE_HI_COL, NUM_STATE_LO_COL>,
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meta: &mut ConstraintSystem<F>,
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) -> Vec<(String, LookupEntry<F>)> {
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let stack_lookup_0 = query_expression(meta, |meta| config.get_state_lookup(meta, 0));
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let stack_lookup_1 = query_expression(meta, |meta| config.get_state_lookup(meta, 1));
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let stack_lookup_2 = query_expression(meta, |meta| config.get_state_lookup(meta, 2));
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let stack_lookup_3 = query_expression(meta, |meta| config.get_state_lookup(meta, 3));
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let arithmetic = query_expression(meta, |meta| config.get_arithmetic_lookup(meta));
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vec![
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("stack pop a".into(), stack_lookup_0),
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("stack pop b".into(), stack_lookup_1),
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("stack pop n".into(), stack_lookup_2),
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("stack push".into(), stack_lookup_3),
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("arithmetic lookup".into(), arithmetic),
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]
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}
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pub(crate) fn get_arithmetic_lookup(&self, meta: &mut VirtualCells<F>) -> LookupEntry<F> {
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let (hi_0, lo_0, hi_1, lo_1, hi_2, lo_2, hi_3, lo_3, tag) = (
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meta.query_advice(self.vers[0], Rotation(-2)),
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meta.query_advice(self.vers[1], Rotation(-2)),
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meta.query_advice(self.vers[2], Rotation(-2)),
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meta.query_advice(self.vers[3], Rotation(-2)),
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meta.query_advice(self.vers[4], Rotation(-2)),
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meta.query_advice(self.vers[5], Rotation(-2)),
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meta.query_advice(self.vers[6], Rotation(-2)),
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meta.query_advice(self.vers[7], Rotation(-2)),
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meta.query_advice(self.vers[8], Rotation(-2)),
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);
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LookupEntry::Arithmetic {
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tag,
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values: [hi_0, lo_0, hi_1, lo_1, hi_2, lo_2, hi_3, lo_3],
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}
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}
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``` |
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\ No newline at end of file |
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- [5-state.markdown](../5-state.markdown)
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- [8-arithmetic.markdown](../8-arithmetic.markdown) |
