rishi/scryer-prolog
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remove Term

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This commit is contained in:
Mark Thom
2024-07-16 15:38:22 -06:00
committed by Mark Thom
parent 34ac85bb6d
commit 1ef681bd21
43 changed files with 3823 additions and 2720 deletions
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17
src/targets.rs
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@@ -3,17 +3,12 @@ use crate::parser::ast::*;
use crate::atom_table::*;
use crate::forms::*;
use crate::instructions::*;
use crate::iterators::*;
use crate::types::*;
pub(crate) struct FactInstruction;
pub(crate) struct QueryInstruction;
pub(crate) trait CompilationTarget<'a> {
type Iterator: Iterator<Item = TermRef<'a>>;
fn iter(term: &'a Term) -> Self::Iterator;
fn to_constant(lvl: Level, literal: Literal, r: RegType) -> Instruction;
fn to_list(lvl: Level, r: RegType) -> Instruction;
fn to_structure(lvl: Level, name: Atom, arity: usize, r: RegType) -> Instruction;
@@ -41,12 +36,6 @@ pub(crate) trait CompilationTarget<'a> {
}
impl<'a> CompilationTarget<'a> for FactInstruction {
type Iterator = FactIterator<'a>;
fn iter(term: &'a Term) -> Self::Iterator {
breadth_first_iter(term, RootIterationPolicy::NotIterated)
}
fn to_constant(lvl: Level, constant: Literal, reg: RegType) -> Instruction {
Instruction::GetConstant(lvl, HeapCellValue::from(constant), reg)
}
@@ -115,12 +104,6 @@ impl<'a> CompilationTarget<'a> for FactInstruction {
}
impl<'a> CompilationTarget<'a> for QueryInstruction {
type Iterator = QueryIterator<'a>;
fn iter(term: &'a Term) -> Self::Iterator {
post_order_iter(term)
}
fn to_structure(_lvl: Level, name: Atom, arity: usize, r: RegType) -> Instruction {
Instruction::PutStructure(name, arity, r)
}