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add acyclic term

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This commit is contained in:
Mark Thom
2018-03-28 21:17:46 -06:00
parent eb694cbba7
commit 80b59bae83
4 changed files with 46 additions and 12 deletions
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5
src/prolog/ast.rs
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@@ -673,6 +673,7 @@ pub struct Rule {
#[derive(Clone)]
pub enum ClauseType {
AcyclicTerm,
Arg,
CallN,
CallWithInferenceLimit,
@@ -773,7 +774,8 @@ impl ClauseType {
pub fn name(&self) -> ClauseName {
match self {
&ClauseType::Arg => clause_name!("arg"),
&ClauseType::AcyclicTerm => clause_name!("acyclic_term"),
&ClauseType::Arg => clause_name!("arg"),
&ClauseType::CallN => clause_name!("call"),
&ClauseType::CallWithInferenceLimit => clause_name!("call_with_inference_limit"),
&ClauseType::Catch => clause_name!("catch"),
@@ -798,6 +800,7 @@ impl ClauseType {
pub fn from(name: ClauseName, arity: usize, fixity: Option<Fixity>) -> Self {
match (name.as_str(), arity) {
("acyclic_term", 1) => ClauseType::AcyclicTerm,
("arg", 3) => ClauseType::Arg,
("call", _) => ClauseType::CallN,
("call_with_inference_limit", 3) => ClauseType::CallWithInferenceLimit,