use crate::plan::CustomFieldAccess;
use crate::plan::{
BoolExpr, CaptureArg, ConstantStringFunctionInstantiation, FloatExpr, FunctionFunctionExpr,
FunctionInstantiation, FunctionListExpr, FunctionType, IntExpr, PanicExpr, Step, StringExpr,
StringFunctionLocalId, StringFunctionReference, TupleExpr,
};
use ecow::EcoString;
use num_bigint::BigInt;
#[derive(Debug, Clone, PartialEq)]
pub struct StringFunctionExpr {
type_: FunctionType,
kind: StringFunctionExprKind,
}
#[derive(Debug, Clone, PartialEq)]
pub(crate) enum StringFunctionExprKind {
Constant(ConstantStringFunctionInstantiation),
Reference(StringFunctionReference),
Closure {
function: FunctionInstantiation,
captures: Vec<CaptureArg>,
},
LocalGet {
local: StringFunctionLocalId,
name: EcoString,
},
Call {
function: FunctionInstantiation,
args: Vec<crate::plan::CallArg>,
type_: FunctionType,
site: crate::plan::HostCallSite,
},
FunctionCall {
function: Box<FunctionFunctionExpr>,
args: Vec<crate::plan::CallArg>,
type_: FunctionType,
site: crate::plan::HostCallSite,
},
TupleIndex {
tuple: Box<TupleExpr>,
index: usize,
type_: FunctionType,
},
CustomField(CustomFieldAccess),
ListIndex {
list: Box<FunctionListExpr>,
index: usize,
type_: FunctionType,
},
Panic(PanicExpr),
BoolCase {
subject: Box<BoolExpr>,
true_: Box<StringFunctionExpr>,
false_: Box<StringFunctionExpr>,
},
IntCase {
subject: Box<IntExpr>,
clauses: Vec<(BigInt, StringFunctionExpr)>,
fallback: Box<StringFunctionExpr>,
},
StringCase {
subject: Box<StringExpr>,
clauses: Vec<(EcoString, StringFunctionExpr)>,
fallback: Box<StringFunctionExpr>,
},
FloatCase {
subject: Box<FloatExpr>,
clauses: Vec<(f64, StringFunctionExpr)>,
fallback: Box<StringFunctionExpr>,
},
Block {
steps: Vec<Step>,
return_: Box<StringFunctionExpr>,
},
}
impl StringFunctionExpr {
pub(crate) fn constant(
value: ConstantStringFunctionInstantiation,
type_: FunctionType,
) -> Self {
Self {
type_,
kind: StringFunctionExprKind::Constant(value),
}
}
pub(crate) fn reference(value: StringFunctionReference) -> Self {
let type_ = value.instantiation().shape().type_();
Self {
type_,
kind: StringFunctionExprKind::Reference(value),
}
}
pub(crate) fn closure(
function: FunctionInstantiation,
captures: Vec<CaptureArg>,
type_: FunctionType,
) -> Self {
Self {
type_,
kind: StringFunctionExprKind::Closure { function, captures },
}
}
pub(crate) fn local_get(
local: StringFunctionLocalId,
name: EcoString,
type_: FunctionType,
) -> Self {
Self {
type_,
kind: StringFunctionExprKind::LocalGet { local, name },
}
}
#[cfg(test)]
pub(crate) fn call(
function: FunctionInstantiation,
args: Vec<crate::plan::CallArg>,
type_: FunctionType,
) -> Self {
Self::call_at(function, args, type_, crate::plan::HostCallSite::unknown())
}
pub(crate) fn call_at(
function: FunctionInstantiation,
args: Vec<crate::plan::CallArg>,
type_: FunctionType,
site: crate::plan::HostCallSite,
) -> Self {
Self {
type_: type_.clone(),
kind: StringFunctionExprKind::Call {
function,
args,
type_,
site,
},
}
}
#[cfg(test)]
pub(crate) fn function_call(
function: FunctionFunctionExpr,
args: Vec<crate::plan::CallArg>,
type_: FunctionType,
) -> Self {
Self::function_call_at(function, args, type_, crate::plan::HostCallSite::unknown())
}
pub(crate) fn function_call_at(
function: FunctionFunctionExpr,
args: Vec<crate::plan::CallArg>,
type_: FunctionType,
site: crate::plan::HostCallSite,
) -> Self {
Self {
type_: type_.clone(),
kind: StringFunctionExprKind::FunctionCall {
function: Box::new(function),
args,
type_,
site,
},
}
}
pub(crate) fn tuple_index(tuple: TupleExpr, index: usize, type_: FunctionType) -> Self {
Self {
type_: type_.clone(),
kind: StringFunctionExprKind::TupleIndex {
tuple: Box::new(tuple),
index,
type_,
},
}
}
pub(crate) fn custom_field(access: CustomFieldAccess, type_: FunctionType) -> Self {
Self {
type_,
kind: StringFunctionExprKind::CustomField(access),
}
}
pub(crate) fn list_index(
list: impl Into<FunctionListExpr>,
index: usize,
type_: FunctionType,
) -> Self {
Self {
type_: type_.clone(),
kind: StringFunctionExprKind::ListIndex {
list: Box::new(list.into()),
index,
type_,
},
}
}
pub(crate) fn panic(panic: PanicExpr, type_: FunctionType) -> Self {
Self {
type_,
kind: StringFunctionExprKind::Panic(panic),
}
}
pub(crate) fn bool_case(
subject: BoolExpr,
true_: StringFunctionExpr,
false_: StringFunctionExpr,
) -> Self {
Self {
type_: true_.type_.clone(),
kind: StringFunctionExprKind::BoolCase {
subject: Box::new(subject),
true_: Box::new(true_),
false_: Box::new(false_),
},
}
}
pub(crate) fn int_case(
subject: IntExpr,
clauses: Vec<(BigInt, StringFunctionExpr)>,
fallback: StringFunctionExpr,
) -> Self {
Self {
type_: fallback.type_.clone(),
kind: StringFunctionExprKind::IntCase {
subject: Box::new(subject),
clauses,
fallback: Box::new(fallback),
},
}
}
pub(crate) fn string_case(
subject: StringExpr,
clauses: Vec<(EcoString, StringFunctionExpr)>,
fallback: StringFunctionExpr,
) -> Self {
Self {
type_: fallback.type_.clone(),
kind: StringFunctionExprKind::StringCase {
subject: Box::new(subject),
clauses,
fallback: Box::new(fallback),
},
}
}
pub(crate) fn float_case(
subject: FloatExpr,
clauses: Vec<(f64, StringFunctionExpr)>,
fallback: StringFunctionExpr,
) -> Self {
Self {
type_: fallback.type_.clone(),
kind: StringFunctionExprKind::FloatCase {
subject: Box::new(subject),
clauses,
fallback: Box::new(fallback),
},
}
}
pub(crate) fn block(steps: Vec<Step>, return_: StringFunctionExpr) -> Self {
Self {
type_: return_.type_.clone(),
kind: StringFunctionExprKind::Block {
steps,
return_: Box::new(return_),
},
}
}
pub fn type_(&self) -> &FunctionType {
&self.type_
}
pub(crate) fn kind(&self) -> &StringFunctionExprKind {
&self.kind
}
}
#[cfg(test)]
mod tests {
use super::{StringFunctionExpr, StringFunctionExprKind};
use crate::plan::{
BoolExpr, Expr, FunctionFunctionExpr, FunctionFunctionReference, FunctionInstantiation,
FunctionShape, FunctionType, IntExpr, Step, StringExpr, StringFunctionLocalId,
StringFunctionReference, ValueShape, ValueType, monomorphic_function_instantiation,
};
#[test]
fn string_function_expr_kind_accessors() {
assert_eq!(
function_value().kind(),
&StringFunctionExprKind::Reference(StringFunctionReference::new(
function_instantiation()
)),
);
assert_eq!(
StringFunctionExpr::closure(function_instantiation(), Vec::new(), function_type(),)
.kind(),
&StringFunctionExprKind::Closure {
function: function_instantiation(),
captures: Vec::new(),
},
);
assert_eq!(
StringFunctionExpr::local_get(StringFunctionLocalId(0), "f".into(), function_type())
.kind(),
&StringFunctionExprKind::LocalGet {
local: StringFunctionLocalId(0),
name: "f".into(),
},
);
assert_eq!(
StringFunctionExpr::call(
function_returning_function_instantiation(),
Vec::new(),
function_type(),
)
.kind(),
&StringFunctionExprKind::Call {
function: function_returning_function_instantiation(),
args: Vec::new(),
type_: function_type(),
site: crate::plan::HostCallSite::unknown(),
},
);
assert_eq!(
StringFunctionExpr::function_call(
function_function_value(),
Vec::new(),
function_type(),
)
.kind(),
&StringFunctionExprKind::FunctionCall {
function: Box::new(function_function_value()),
args: Vec::new(),
type_: function_type(),
site: crate::plan::HostCallSite::unknown(),
},
);
assert_eq!(
StringFunctionExpr::tuple_index(tuple_expr(), 0, function_type()).kind(),
&StringFunctionExprKind::TupleIndex {
tuple: Box::new(tuple_expr()),
index: 0,
type_: function_type(),
},
);
assert_eq!(
StringFunctionExpr::bool_case(
BoolExpr::value(true),
function_value(),
function_value(),
)
.kind(),
&StringFunctionExprKind::BoolCase {
subject: Box::new(BoolExpr::value(true)),
true_: Box::new(function_value()),
false_: Box::new(function_value()),
},
);
assert_eq!(
StringFunctionExpr::int_case(
IntExpr::value(1.into()),
vec![(1.into(), function_value())],
function_value(),
)
.kind(),
&StringFunctionExprKind::IntCase {
subject: Box::new(IntExpr::value(1.into())),
clauses: vec![(1.into(), function_value())],
fallback: Box::new(function_value()),
},
);
assert_eq!(
StringFunctionExpr::string_case(
StringExpr::value("one".into()),
vec![("one".into(), function_value())],
function_value(),
)
.kind(),
&StringFunctionExprKind::StringCase {
subject: Box::new(StringExpr::value("one".into())),
clauses: vec![("one".into(), function_value())],
fallback: Box::new(function_value()),
},
);
assert_eq!(
StringFunctionExpr::float_case(
crate::plan::FloatExpr::value(1.0),
vec![(1.0, function_value())],
function_value(),
)
.kind(),
&StringFunctionExprKind::FloatCase {
subject: Box::new(crate::plan::FloatExpr::value(1.0)),
clauses: vec![(1.0, function_value())],
fallback: Box::new(function_value()),
},
);
assert_eq!(
StringFunctionExpr::block(
vec![Step::evaluate(Expr::int(IntExpr::value(1.into())))],
function_value(),
)
.kind(),
&StringFunctionExprKind::Block {
steps: vec![Step::evaluate(Expr::int(IntExpr::value(1.into())))],
return_: Box::new(function_value()),
},
);
}
#[test]
fn string_function_expr_type() {
assert_eq!(function_value().type_(), &function_type());
}
fn function_value() -> StringFunctionExpr {
StringFunctionExpr::reference(StringFunctionReference::new(function_instantiation()))
}
fn function_type() -> FunctionType {
FunctionType::new(vec![ValueType::String], ValueType::String)
}
fn function_function_value() -> FunctionFunctionExpr {
FunctionFunctionExpr::reference(
FunctionFunctionReference::new(function_returning_function_instantiation()),
function_type(),
)
}
fn function_instantiation() -> FunctionInstantiation {
monomorphic_function_instantiation(0, FunctionShape::from_function_type(function_type()))
}
fn function_returning_function_instantiation() -> FunctionInstantiation {
monomorphic_function_instantiation(
1,
FunctionShape::new(
Vec::new(),
ValueShape::Function(Box::new(FunctionShape::from_function_type(function_type()))),
),
)
}
fn tuple_expr() -> crate::plan::TupleExpr {
crate::plan::TupleExpr::value(
vec![Expr::function(crate::plan::FunctionExpr::string(
function_value(),
))],
vec![ValueType::Function(Box::new(function_type()))],
)
}
}