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system calls preliminary

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This commit is contained in:
Mark Thom
2018-05-07 22:27:58 -06:00
parent a1bfcf4c9d
commit 1a0f50200f
5 changed files with 52 additions and 187 deletions
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43
src/prolog/ast.rs
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@@ -683,6 +683,26 @@ pub struct Rule {
pub clauses: Vec<QueryTerm>
}
#[derive(Clone)]
pub enum SystemClauseType {
SkipMaxList
}
impl SystemClauseType {
pub fn name(&self) -> ClauseName {
match self {
&SystemClauseType::SkipMaxList => clause_name!("$skip_max_list"),
}
}
pub fn from(name: &str, arity: usize) -> Option<SystemClauseType> {
match (name, arity) {
("$skip_max_list", 4) => Some(SystemClauseType::SkipMaxList),
_ => None
}
}
}
#[derive(Clone)]
pub enum ClauseType {
AcyclicTerm,
@@ -705,8 +725,8 @@ pub enum ClauseType {
Op(ClauseName, Fixity, CodeIndex),
Named(ClauseName, CodeIndex),
SetupCallCleanup,
SkipMaxList,
Sort,
System(SystemClauseType),
Throw,
}
@@ -788,14 +808,14 @@ impl ClauseType {
pub fn name(&self) -> ClauseName {
match self {
&ClauseType::AcyclicTerm => clause_name!("acyclic_term"),
&ClauseType::AcyclicTerm => clause_name!("$acyclic_term"),
&ClauseType::Arg => clause_name!("arg"),
&ClauseType::CallN => clause_name!("call"),
&ClauseType::CallWithInferenceLimit => clause_name!("call_with_inference_limit"),
&ClauseType::Catch => clause_name!("catch"),
&ClauseType::Compare => clause_name!("compare"),
&ClauseType::CompareTerm(qt) => clause_name!(qt.name()),
&ClauseType::CyclicTerm => clause_name!("cyclic_term"),
&ClauseType::CyclicTerm => clause_name!("$cyclic_term"),
&ClauseType::Display => clause_name!("display"),
&ClauseType::DuplicateTerm => clause_name!("duplicate_term"),
&ClauseType::Eq => clause_name!("=="),
@@ -803,26 +823,26 @@ impl ClauseType {
&ClauseType::Ground => clause_name!("ground"),
&ClauseType::Inlined(inlined) => clause_name!(inlined.name()),
&ClauseType::Is => clause_name!("is"),
&ClauseType::KeySort => clause_name!("keysort"),
&ClauseType::KeySort => clause_name!("$keysort"),
&ClauseType::NotEq => clause_name!("\\=="),
&ClauseType::Op(ref name, ..) => name.clone(),
&ClauseType::Named(ref name, ..) => name.clone(),
&ClauseType::SetupCallCleanup => clause_name!("setup_call_cleanup"),
&ClauseType::SkipMaxList => clause_name!("$skip_max_list"),
&ClauseType::Sort => clause_name!("sort"),
&ClauseType::System(ref system) => system.name(),
&ClauseType::Sort => clause_name!("$sort"),
&ClauseType::Throw => clause_name!("throw")
}
}
pub fn from(name: ClauseName, arity: usize, fixity: Option<Fixity>) -> Self {
match (name.as_str(), arity) {
("acyclic_term", 1) => ClauseType::AcyclicTerm,
("$acyclic_term", 1) => ClauseType::AcyclicTerm,
("arg", 3) => ClauseType::Arg,
("call", _) => ClauseType::CallN,
("call_with_inference_limit", 3) => ClauseType::CallWithInferenceLimit,
("catch", 3) => ClauseType::Catch,
("compare", 3) => ClauseType::Compare,
("cyclic_term", 1) => ClauseType::CyclicTerm,
("$cyclic_term", 1) => ClauseType::CyclicTerm,
("@>", 2) => ClauseType::CompareTerm(CompareTermQT::GreaterThan),
("@<", 2) => ClauseType::CompareTerm(CompareTermQT::LessThan),
("@>=", 2) => ClauseType::CompareTerm(CompareTermQT::GreaterThanOrEqual),
@@ -835,11 +855,10 @@ impl ClauseType {
("functor", 3) => ClauseType::Functor,
("ground", 1) => ClauseType::Ground,
("is", 2) => ClauseType::Is,
("keysort", 2) => ClauseType::KeySort,
("$keysort", 2) => ClauseType::KeySort,
("\\==", 2) => ClauseType::NotEq,
("setup_call_cleanup", 3) => ClauseType::SetupCallCleanup,
("$skip_max_list", 4) => ClauseType::SkipMaxList,
("sort", 2) => ClauseType::Sort,
("setup_call_cleanup", 3) => ClauseType::SetupCallCleanup,
("$sort", 2) => ClauseType::Sort,
("throw", 1) => ClauseType::Throw,
_ => if let Some(fixity) = fixity {
ClauseType::Op(name, fixity, CodeIndex::default())