use std::borrow::Borrow;
use std::fmt;
use erg_common::{Str};
use erg_common::{
impl_display_for_single_struct,
impl_locational, impl_locational_for_enum,
impl_displayable_stream_for_wrapper,
impl_stream, impl_stream_for_wrapper,
fmt_vec, fmt_option, impl_display_for_enum,
impl_display_from_nested, impl_nested_display_for_enum
};
use erg_common::value::ValueObj;
use erg_common::error::Location;
use erg_common::set::Set;
use erg_common::traits::{Locational, Stream, NestedDisplay};
use erg_common::ty::SubrKind;
use crate::token::{Token, TokenKind};
pub fn fmt_lines<'a, T: NestedDisplay + 'a>(
mut iter: impl Iterator<Item=&'a T>, f: &mut fmt::Formatter<'_>, level: usize
) -> fmt::Result {
if let Some(line) = iter.next() {
line.fmt_nest(f, level)?;
}
for arg in iter {
write!(f, "\n")?;
arg.fmt_nest(f, level)?;
}
Ok(())
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Literal {
pub token: Token,
}
impl NestedDisplay for Literal {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "{}", self.token)
}
}
impl_display_from_nested!(Literal);
impl Locational for Literal {
#[inline]
fn loc(&self) -> Location { self.token.loc() }
}
impl From<Token> for Literal {
#[inline]
fn from(token: Token) -> Self { Self { token } }
}
impl From<&Literal> for ValueObj {
#[inline]
fn from(lit: &Literal) -> ValueObj { ValueObj::from(&lit.token) }
}
impl Literal {
#[inline]
pub fn is(&self, kind: TokenKind) -> bool { self.token.is(kind) }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct PosArg {
pub expr: Expr,
}
impl NestedDisplay for PosArg {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, level: usize) -> std::fmt::Result {
self.expr.fmt_nest(f, level)
}
}
impl_display_from_nested!(PosArg);
impl Locational for PosArg {
fn loc(&self) -> Location { self.expr.loc() }
}
impl PosArg {
pub const fn new(expr: Expr) -> Self { Self { expr } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct KwArg {
pub keyword: Token,
pub expr: Expr,
}
impl NestedDisplay for KwArg {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, level: usize) -> std::fmt::Result {
write!(f, "{}:\n", self.keyword)?;
self.expr.fmt_nest(f, level + 1)
}
}
impl_display_from_nested!(KwArg);
impl Locational for KwArg {
fn loc(&self) -> Location {
Location::concat(&self.keyword, &self.expr)
}
}
impl KwArg {
pub const fn new(keyword: Token, expr: Expr) -> Self { Self { keyword, expr } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Args {
pos_args: Vec<PosArg>,
kw_args: Vec<KwArg>,
paren: Option<(Token, Token)>,
}
impl NestedDisplay for Args {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, level: usize) -> std::fmt::Result {
fmt_lines(self.pos_args.iter(), f, level)
}
}
impl_display_from_nested!(Args);
impl Locational for Args {
fn loc(&self) -> Location {
if let Some((l, r)) = &self.paren { Location::concat(l, r) }
else { Location::concat(&self.pos_args[0], self.pos_args.last().unwrap()) }
}
}
impl Args {
pub const fn new(pos_args: Vec<PosArg>, kw_args: Vec<KwArg>, paren: Option<(Token, Token)>) -> Self {
Self { pos_args, kw_args, paren }
}
pub const fn empty() -> Self { Self::new(vec![], vec![], None) }
pub fn deconstruct(self) -> (Vec<PosArg>, Vec<KwArg>, Option<(Token, Token)>) {
(self.pos_args, self.kw_args, self.paren)
}
pub fn is_empty(&self) -> bool {
self.pos_args.is_empty() && self.kw_args.is_empty()
}
pub fn kw_is_empty(&self) -> bool {
self.kw_args.is_empty()
}
pub fn pos_args(&self) -> &[PosArg] { &self.pos_args[..] }
pub fn kw_args(&self) -> &[KwArg] { &self.kw_args[..] }
pub fn into_iters(self) -> (impl IntoIterator<Item=PosArg>, impl IntoIterator<Item=KwArg>) {
(self.pos_args.into_iter(), self.kw_args.into_iter())
}
pub fn push_pos(&mut self, arg: PosArg) {
self.pos_args.push(arg);
}
pub fn remove_pos(&mut self, index: usize) -> PosArg {
self.pos_args.remove(index)
}
pub fn insert_pos(&mut self, index: usize, arg: PosArg) {
self.pos_args.insert(index, arg);
}
pub fn push_kw(&mut self, arg: KwArg) {
self.kw_args.push(arg);
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Local {
pub symbol: Token,
}
impl_display_for_single_struct!(Local, symbol.content);
impl Locational for Local {
#[inline]
fn loc(&self) -> Location { self.symbol.loc() }
}
impl Local {
pub const fn new(symbol: Token) -> Self { Self{ symbol } }
pub fn dummy(name: &'static str) -> Self {
Self::new(Token::from_str(TokenKind::Symbol, name))
}
pub const fn inspect(&self) -> &Str { &self.symbol.content }
pub fn is_const(&self) -> bool { self.symbol.inspect().chars().next().unwrap().is_uppercase() }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Attribute {
pub obj: Box<Expr>,
pub name: Local,
}
impl fmt::Display for Attribute {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "({}).{}", self.obj, self.name)
}
}
impl_locational!(Attribute, obj, name);
impl Attribute {
pub fn new(obj: Expr, name: Local) -> Self { Self { obj: Box::new(obj), name } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct TupleAttribute {
pub obj: Box<Expr>,
pub index: Literal,
}
impl fmt::Display for TupleAttribute {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "({}).{}", self.obj, self.index)
}
}
impl_locational!(TupleAttribute, obj, index);
impl TupleAttribute {
pub fn new(obj: Expr, index: Literal) -> Self { Self { obj: Box::new(obj), index } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Subscript {
obj: Box<Expr>,
index: Box<Expr>,
}
impl fmt::Display for Subscript {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "({})[{}]", self.obj, self.index)
}
}
impl_locational!(Subscript, obj, index);
impl Subscript {
pub fn new(obj: Expr, index: Expr) -> Self {
Self { obj: Box::new(obj), index: Box::new(index) }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum Accessor {
Local(Local),
SelfDot(Local),
Attr(Attribute),
TupleAttr(TupleAttribute),
Subscr(Subscript),
}
impl NestedDisplay for Accessor {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
match self {
Self::Local(name) => write!(f, "{}", name),
Self::SelfDot(attr) => write!(f, "self.{}", attr),
Self::Attr(attr) => write!(f, "{}", attr),
Self::TupleAttr(attr) => write!(f, "{}", attr),
Self::Subscr(subscr) => write!(f, "{}", subscr),
}
}
}
impl_display_from_nested!(Accessor);
impl_locational_for_enum!(Accessor; Local, SelfDot, Attr, TupleAttr, Subscr);
impl Accessor {
pub const fn local(symbol: Token) -> Self { Self::Local(Local::new(symbol)) }
pub const fn self_dot(attr: Token) -> Self { Self::SelfDot(Local::new(attr)) }
pub fn attr(obj: Expr, name: Local) -> Self { Self::Attr(Attribute::new(obj, name)) }
pub fn subscr(obj: Expr, index: Expr) -> Self {
Self::Subscr(Subscript::new(obj, index))
}
pub const fn name(&self) -> Option<&Str> {
match self {
Self::Local(local) => Some(local.inspect()),
Self::SelfDot(local) => Some(local.inspect()),
_ => None,
}
}
pub fn is_const(&self) -> bool {
match self {
Self::Local(local)
| Self::SelfDot(local) => local.is_const(),
Self::Subscr(subscr) => subscr.obj.is_const_acc(),
Self::TupleAttr(attr) => attr.obj.is_const_acc(),
Self::Attr(attr) => attr.obj.is_const_acc() && attr.name.is_const(),
}
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Array {
pub l_sqbr: Token,
pub r_sqbr: Token,
pub elems: Args,
pub guard: Option<Box<Expr>>,
}
impl NestedDisplay for Array {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
if let Some(guard) = &self.guard {
write!(f, "[{} | {}]", self.elems, guard)
} else {
write!(f, "[{}]", self.elems)
}
}
}
impl_display_from_nested!(Array);
impl_locational!(Array, l_sqbr, r_sqbr);
impl Array {
pub fn new(l_sqbr: Token, r_sqbr: Token, elems: Args, guard: Option<Expr>) -> Self {
Self { l_sqbr, r_sqbr, elems, guard: guard.map(Box::new) }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Dict {
l_brace: Token,
r_brace: Token,
pub attrs: Args,
guard: Option<Box<Expr>>,
}
impl NestedDisplay for Dict {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
if let Some(guard) = &self.guard {
write!(f, "{{{} | {guard}}}", self.attrs)
} else {
write!(f, "{{{}}}", self.attrs)
}
}
}
impl_display_from_nested!(Dict);
impl_locational!(Dict, l_brace, r_brace);
impl Dict {
pub fn new(l_brace: Token, r_brace: Token, attrs: Args, guard: Option<Expr>) -> Self {
Self { l_brace, r_brace, attrs, guard: guard.map(Box::new) }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct BinOp {
pub op: Token,
pub args: [Box<Expr>; 2],
}
impl NestedDisplay for BinOp {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, level: usize) -> fmt::Result {
write!(f, "`{}`:\n", self.op.content)?;
self.args[0].fmt_nest(f, level + 1)?;
write!(f, "\n")?;
self.args[1].fmt_nest(f, level + 1)
}
}
impl_display_from_nested!(BinOp);
impl Locational for BinOp {
fn loc(&self) -> Location {
Location::concat(&self.op, self.args[1].as_ref())
}
}
impl BinOp {
pub fn new(op: Token, lhs: Expr, rhs: Expr) -> Self {
Self { op, args: [Box::new(lhs), Box::new(rhs)] }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct UnaryOp {
pub op: Token,
pub args: [Box<Expr>; 1],
}
impl NestedDisplay for UnaryOp {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, level: usize) -> fmt::Result {
write!(f, "`{}`:\n", self.op.content)?;
self.args[0].fmt_nest(f, level + 1)
}
}
impl_display_from_nested!(UnaryOp);
impl Locational for UnaryOp {
fn loc(&self) -> Location {
Location::concat(&self.op, self.args[0].as_ref())
}
}
impl UnaryOp {
pub fn new(op: Token, expr: Expr) -> Self { Self { op, args: [Box::new(expr)] } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Call {
pub obj: Box<Expr>,
pub args: Args,
}
impl NestedDisplay for Call {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, level: usize) -> std::fmt::Result {
write!(f, "({}):\n", self.obj)?;
self.args.fmt_nest(f, level + 1)
}
}
impl_display_from_nested!(Call);
impl Locational for Call {
fn loc(&self) -> Location {
if self.args.is_empty() { self.obj.loc() }
else { Location::concat(self.obj.as_ref(), &self.args) }
}
}
impl Call {
pub fn new(obj: Expr, args: Args) -> Self { Self { obj: Box::new(obj), args } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Block(Vec<Expr>);
impl NestedDisplay for Block {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, level: usize) -> fmt::Result {
fmt_lines(self.0.iter(), f, level)
}
}
impl_display_from_nested!(Block);
impl Locational for Block {
fn loc(&self) -> Location {
Location::concat(self.0.first().unwrap(), self.0.last().unwrap())
}
}
impl_stream_for_wrapper!(Block, Expr);
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstLocal {
pub symbol: Token,
}
impl NestedDisplay for ConstLocal {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "{}", self.symbol)
}
}
impl_display_from_nested!(ConstLocal);
impl Locational for ConstLocal {
#[inline]
fn loc(&self) -> Location { self.symbol.loc() }
}
impl ConstLocal {
pub const fn new(symbol: Token) -> Self { Self{ symbol } }
pub fn dummy(name: &'static str) -> Self {
Self::new(Token::from_str(TokenKind::Symbol, name))
}
pub const fn inspect(&self) -> &Str { &self.symbol.content }
}
pub type ConstVar = ConstLocal;
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstAttribute {
pub obj: Box<ConstExpr>,
pub name: ConstLocal,
}
impl NestedDisplay for ConstAttribute {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "({}).{}", self.obj, self.name)
}
}
impl_display_from_nested!(ConstAttribute);
impl_locational!(ConstAttribute, obj, name);
impl ConstAttribute {
pub fn new(expr: ConstExpr, name: ConstLocal) -> Self { Self { obj: Box::new(expr), name } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstSubscript {
obj: Box<ConstExpr>,
index: Box<ConstExpr>,
}
impl NestedDisplay for ConstSubscript {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "({})[{}]", self.obj, self.index)
}
}
impl_display_from_nested!(ConstSubscript);
impl_locational!(ConstSubscript, obj, index);
impl ConstSubscript {
pub fn new(obj: ConstExpr, index: ConstExpr) -> Self {
Self { obj: Box::new(obj), index: Box::new(index) }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum ConstAccessor {
Local(ConstLocal),
SelfDot(ConstLocal),
Attr(ConstAttribute),
Subscr(ConstSubscript),
}
impl_nested_display_for_enum!(ConstAccessor; Local, SelfDot, Attr, Subscr);
impl_display_from_nested!(ConstAccessor);
impl_locational_for_enum!(ConstAccessor; Local, SelfDot, Attr, Subscr);
impl ConstAccessor {
pub const fn local(symbol: Token) -> Self { Self::Local(ConstLocal::new(symbol)) }
pub const fn dot_self(attr: Token) -> Self { Self::SelfDot(ConstLocal::new(attr)) }
pub fn attr(obj: ConstExpr, name: ConstLocal) -> Self {
Self::Attr(ConstAttribute::new(obj, name))
}
pub fn subscr(obj: ConstExpr, index: ConstExpr) -> Self {
Self::Subscr(ConstSubscript::new(obj, index))
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstArray {
pub l_sqbr: Token,
pub r_sqbr: Token,
pub elems: ConstArgs,
pub guard: Option<Box<ConstExpr>>,
}
impl NestedDisplay for ConstArray {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
if let Some(guard) = &self.guard {
write!(f, "[{} | {}]", self.elems, guard)
} else {
write!(f, "[{}]", self.elems)
}
}
}
impl_display_from_nested!(ConstArray);
impl_locational!(ConstArray, l_sqbr, r_sqbr);
impl ConstArray {
pub fn new(l_sqbr: Token, r_sqbr: Token, elems: ConstArgs, guard: Option<ConstExpr>) -> Self {
Self { l_sqbr, r_sqbr, elems, guard: guard.map(Box::new) }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstDict {
l_brace: Token,
r_brace: Token,
pub attrs: ConstArgs,
}
impl NestedDisplay for ConstDict {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "{{{}}}", self.attrs)
}
}
impl_display_from_nested!(ConstDict);
impl_locational!(ConstDict, l_brace, r_brace);
impl ConstDict {
pub fn new(l_brace: Token, r_brace: Token, attrs: ConstArgs) -> Self {
Self { l_brace, r_brace, attrs }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstBinOp {
pub op: Token,
pub lhs: Box<ConstExpr>,
pub rhs: Box<ConstExpr>,
}
impl NestedDisplay for ConstBinOp {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "`{}`({}, {})", self.op.content, self.lhs, self.rhs)
}
}
impl_display_from_nested!(ConstBinOp);
impl_locational!(ConstBinOp, lhs, rhs);
impl ConstBinOp {
pub fn new(op: Token, lhs: ConstExpr, rhs: ConstExpr) -> Self {
Self { op, lhs: Box::new(lhs), rhs: Box::new(rhs) }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstUnaryOp {
pub op: Token,
pub expr: Box<ConstExpr>,
}
impl NestedDisplay for ConstUnaryOp {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "`{}`({})", self.op.content, self.expr)
}
}
impl_display_from_nested!(ConstUnaryOp);
impl_locational!(ConstUnaryOp, op, expr);
impl ConstUnaryOp {
pub fn new(op: Token, expr: ConstExpr) -> Self {
Self { op, expr: Box::new(expr) }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstApp {
pub acc: ConstAccessor,
pub args: ConstArgs,
}
impl NestedDisplay for ConstApp {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, level: usize) -> std::fmt::Result {
write!(f, "({})", self.acc)?;
self.args.fmt_nest(f, level + 1)
}
}
impl Locational for ConstApp {
fn loc(&self) -> Location {
if self.args.is_empty() { self.acc.loc() }
else { Location::concat(&self.acc, &self.args) }
}
}
impl ConstApp {
pub const fn new(acc: ConstAccessor, args: ConstArgs) -> Self { Self { acc, args } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum ConstExpr {
Lit(Literal),
Erased(Literal), Accessor(ConstAccessor),
App(ConstApp),
Array(ConstArray),
Dict(ConstDict),
BinOp(ConstBinOp),
UnaryOp(ConstUnaryOp),
}
impl_nested_display_for_enum!(ConstExpr; Lit, Accessor, App, Array, Dict, BinOp, UnaryOp, Erased);
impl_display_from_nested!(ConstExpr);
impl_locational_for_enum!(ConstExpr; Lit, Accessor, App, Array, Dict, BinOp, UnaryOp, Erased);
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstPosArg {
pub expr: ConstExpr,
}
impl NestedDisplay for ConstPosArg {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, level: usize) -> std::fmt::Result {
self.expr.fmt_nest(f, level)
}
}
impl Locational for ConstPosArg {
fn loc(&self) -> Location { self.expr.loc() }
}
impl ConstPosArg {
pub const fn new(expr: ConstExpr) -> Self { Self { expr } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstKwArg {
pub keyword: Token,
pub expr: ConstExpr,
}
impl NestedDisplay for ConstKwArg {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, level: usize) -> std::fmt::Result {
write!(f, "{}: ", self.keyword.inspect())?;
self.expr.fmt_nest(f, level + 1)
}
}
impl Locational for ConstKwArg {
fn loc(&self) -> Location {
Location::concat(&self.keyword, &self.expr)
}
}
impl ConstKwArg {
pub const fn new(keyword: Token, expr: ConstExpr) -> Self { Self { keyword, expr } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ConstArgs {
pos_args: Vec<ConstPosArg>,
kw_args: Vec<ConstKwArg>,
paren: Option<(Token, Token)>,
}
impl NestedDisplay for ConstArgs {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, level: usize) -> std::fmt::Result {
for arg in self.pos_args.iter() {
arg.fmt_nest(f, level)?;
write!(f, ", ")?;
}
write!(f, "?")?;
for arg in self.kw_args.iter() {
arg.fmt_nest(f, level)?;
write!(f, ", ")?;
}
Ok(())
}
}
impl_display_from_nested!(ConstArgs);
impl Locational for ConstArgs {
fn loc(&self) -> Location {
if let Some((l, r)) = &self.paren {
Location::concat(l, r)
} else if let Some(last) = self.kw_args.last() {
Location::concat(self.pos_args.first().unwrap(), last)
} else if let Some(last) = self.pos_args.last() {
Location::concat(self.pos_args.first().unwrap(), last)
} else { unreachable!() }
}
}
impl ConstArgs {
pub const fn new(pos_args: Vec<ConstPosArg>, kw_args: Vec<ConstKwArg>, paren: Option<(Token, Token)>) -> Self {
Self { pos_args, kw_args, paren }
}
pub const fn empty() -> Self {
Self::new(vec![], vec![], None)
}
pub fn is_empty(&self) -> bool {
self.pos_args.is_empty() && self.kw_args.is_empty()
}
pub fn pos_args(&self) -> impl Iterator<Item=&ConstPosArg> {
self.pos_args.iter()
}
pub fn kw_args(&self) -> impl Iterator<Item=&ConstKwArg> {
self.kw_args.iter()
}
pub fn into_iters(self) -> (impl IntoIterator<Item=ConstPosArg>, impl IntoIterator<Item=ConstKwArg>) {
(self.pos_args.into_iter(), self.kw_args.into_iter())
}
pub fn push_pos(&mut self, arg: ConstPosArg) {
self.pos_args.push(arg);
}
pub fn push_kw(&mut self, arg: ConstKwArg) {
self.kw_args.push(arg);
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct SimpleTypeSpec {
pub name: VarName,
pub args: ConstArgs, }
impl fmt::Display for SimpleTypeSpec {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if self.args.is_empty() {
write!(f, "{}", self.name)
} else {
write!(f, "{}{}", self.name, self.args)
}
}
}
impl Locational for SimpleTypeSpec {
fn loc(&self) -> Location {
if let Some(last) = self.args.kw_args.last() {
Location::concat(&self.name, last)
} else if let Some(last) = self.args.pos_args.last() {
Location::concat(&self.name, last)
} else {
self.name.loc()
}
}
}
impl SimpleTypeSpec {
pub const fn new(name: VarName, args: ConstArgs) -> Self { Self { name, args } }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum PreDeclTypeSpec {
Simple(SimpleTypeSpec),
Attr{ namespace: Vec<VarName>, t: SimpleTypeSpec },
Subscr{ namespace: Vec<VarName>, name: VarName, index: Token },
}
impl fmt::Display for PreDeclTypeSpec {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
PreDeclTypeSpec::Simple(ts) => write!(f, "{}", ts),
PreDeclTypeSpec::Attr{ namespace, t } => {
write!(f, "{}.{}", namespace.join("."), t)
}
PreDeclTypeSpec::Subscr{ namespace, name, index } => {
write!(f, "{}.{}[{}]", namespace.join("."), name, index)
}
}
}
}
impl Locational for PreDeclTypeSpec {
fn loc(&self) -> Location {
match self {
Self::Simple(s) => s.loc(),
Self::Attr{ namespace, t } => Location::concat(
&namespace[0],
t,
),
Self::Subscr{ namespace, index, .. } => Location::concat(
&namespace[0],
index,
),
}
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct ParamTySpec {
pub name: Option<Token>,
pub ty: TypeSpec,
}
impl fmt::Display for ParamTySpec {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if let Some(name) = &self.name {
write!(f, "{}: {}", name.inspect(), self.ty)
} else {
write!(f, "{}", self.ty)
}
}
}
impl Locational for ParamTySpec {
fn loc(&self) -> Location {
if let Some(name) = &self.name {
Location::concat(name, &self.ty)
} else {
self.ty.loc()
}
}
}
impl ParamTySpec {
pub const fn new(name: Option<Token>, ty: TypeSpec) -> Self { Self { name, ty } }
pub const fn anonymous(ty: TypeSpec) -> Self { Self::new(None, ty) }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct SubrTySpec {
pub kind: SubrKind,
pub lparen: Option<Token>,
pub non_defaults: Vec<ParamTySpec>,
pub defaults: Vec<ParamTySpec>,
pub return_t: Box<TypeSpec>,
}
impl fmt::Display for SubrTySpec {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "({}, ? {}) {} {}", fmt_vec(&self.non_defaults), fmt_vec(&self.defaults), self.kind.arrow(), self.return_t)
}
}
impl Locational for SubrTySpec {
fn loc(&self) -> Location {
if let Some(lparen) = &self.lparen {
Location::concat(lparen, self.return_t.as_ref())
} else {
Location::concat(self.non_defaults.first().unwrap(), self.return_t.as_ref())
}
}
}
impl SubrTySpec {
pub fn new(kind: SubrKind, lparen: Option<Token>, non_defaults: Vec<ParamTySpec>, defaults: Vec<ParamTySpec>, return_t: TypeSpec) -> Self {
Self { kind, lparen, non_defaults, defaults, return_t: Box::new(return_t) }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum TypeSpec {
PreDeclTy(PreDeclTypeSpec),
Array{ t: PreDeclTypeSpec, len: ConstExpr },
Tuple(Vec<TypeSpec>),
And(Box<TypeSpec>, Box<TypeSpec>),
Not(Box<TypeSpec>, Box<TypeSpec>),
Or(Box<TypeSpec>, Box<TypeSpec>),
Enum(ConstArgs),
Interval{ op: Token, lhs: ConstExpr, rhs: ConstExpr },
Subr(SubrTySpec),
}
impl fmt::Display for TypeSpec {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::PreDeclTy(ty) => write!(f, "{ty}"),
Self::And(lhs, rhs) => write!(f, "{lhs} and {rhs}"),
Self::Not(lhs, rhs) => write!(f, "{lhs} not {rhs}"),
Self::Or(lhs, rhs) => write!(f, "{lhs} or {rhs}"),
Self::Array{ t, len } => write!(f, "[{t}; {len}]"),
Self::Tuple(tys) => write!(f, "({})", fmt_vec(&tys)),
Self::Enum(elems) => write!(f, "{{{elems}}}"),
Self::Interval{ op, lhs, rhs } => write!(f, "{lhs}{}{rhs}", op.inspect()),
Self::Subr(s) => write!(f, "{s}"),
}
}
}
impl Locational for TypeSpec {
fn loc(&self) -> Location {
match self {
Self::PreDeclTy(sig) => sig.loc(),
Self::And(lhs, rhs)
| Self::Not(lhs, rhs)
| Self::Or(lhs, rhs) => Location::concat(lhs.as_ref(), rhs.as_ref()),
Self::Array{ t, len } => Location::concat(t, len),
Self::Tuple(tys) => Location::concat(tys.first().unwrap(), tys.last().unwrap()),
Self::Enum(set) => set.loc(),
Self::Interval{ lhs, rhs, .. } => Location::concat(lhs, rhs),
Self::Subr(s) => s.loc(),
}
}
}
impl TypeSpec {
pub fn and(lhs: TypeSpec, rhs: TypeSpec) -> Self {
Self::And(Box::new(lhs), Box::new(rhs))
}
pub fn not(lhs: TypeSpec, rhs: TypeSpec) -> Self {
Self::Not(Box::new(lhs), Box::new(rhs))
}
pub fn or(lhs: TypeSpec, rhs: TypeSpec) -> Self {
Self::Or(Box::new(lhs), Box::new(rhs))
}
pub const fn interval(op: Token, lhs: ConstExpr, rhs: ConstExpr) -> Self {
Self::Interval{ op, lhs, rhs }
}
pub fn func(lparen: Option<Token>, non_defaults: Vec<ParamTySpec>, defaults: Vec<ParamTySpec>, return_t: TypeSpec) -> Self {
Self::Subr(SubrTySpec::new(SubrKind::Func, lparen, non_defaults, defaults, return_t))
}
pub fn proc(lparen: Option<Token>, non_defaults: Vec<ParamTySpec>, defaults: Vec<ParamTySpec>, return_t: TypeSpec) -> Self {
Self::Subr(SubrTySpec::new(SubrKind::Proc, lparen, non_defaults, defaults, return_t))
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum TypeBoundSpec {
Subtype{ sub: VarName, sup: TypeSpec }, Instance{ name: VarName, ty: TypeSpec }, }
impl NestedDisplay for TypeBoundSpec {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
match self {
Self::Subtype{ sub, sup } => write!(f, "{} <: {}", sub, sup),
Self::Instance{ name, ty } => write!(f, "{} : {}", name, ty),
}
}
}
impl_display_from_nested!(TypeBoundSpec);
impl Locational for TypeBoundSpec {
fn loc(&self) -> Location {
match self {
Self::Subtype { sub: l, sup: r }
| Self::Instance { name: l, ty: r } => Location::concat(l, r),
}
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct TypeBoundSpecs(Vec<TypeBoundSpec>);
impl_displayable_stream_for_wrapper!(TypeBoundSpecs, TypeBoundSpec);
impl Locational for TypeBoundSpecs {
fn loc(&self) -> Location {
Location::concat(self.first().unwrap(), self.last().unwrap())
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Decorator(Expr);
impl Decorator {
pub const fn new(expr: Expr) -> Self { Self(expr) }
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct VarName(Token);
impl Borrow<str> for VarName {
#[inline]
fn borrow(&self) -> &str { &self.0.content[..] }
}
impl Borrow<Str> for VarName {
#[inline]
fn borrow(&self) -> &Str { &self.0.content }
}
impl Locational for VarName {
#[inline]
fn loc(&self) -> Location { self.0.loc() }
}
impl fmt::Display for VarName {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{}", self.0.inspect())
}
}
impl VarName {
pub const fn new(symbol: Token) -> Self { Self(symbol) }
pub const fn from_static(symbol: &'static str) -> Self { Self(Token::static_symbol(symbol)) }
pub fn from_str(symbol: Str) -> Self { Self(Token::from_str(TokenKind::Symbol, &symbol)) }
#[inline]
pub fn is_const(&self) -> bool {
self.0.content.chars().next().map(|c| c.is_uppercase()).unwrap_or(false)
}
#[inline]
pub fn is_procedural(&self) -> bool {
self.0.content.chars().last().map(|c| c == '!').unwrap_or(false)
}
pub const fn token(&self) -> &Token { &self.0 }
pub fn into_token(self) -> Token { self.0 }
pub const fn inspect(&self) -> &Str { &self.0.content }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct VarArrayPattern {
l_sqbr: Token,
pub(crate) elems: Vars,
r_sqbr: Token,
}
impl fmt::Display for VarArrayPattern {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "[{}]", self.elems)
}
}
impl_locational!(VarArrayPattern, l_sqbr, r_sqbr);
impl Stream<VarSignature> for VarArrayPattern {
#[inline]
fn payload(self) -> Vec<VarSignature> { self.elems.payload() }
#[inline]
fn ref_payload(&self) -> &Vec<VarSignature> { self.elems.ref_payload() }
#[inline]
fn ref_mut_payload(&mut self) -> &mut Vec<VarSignature> { self.elems.ref_mut_payload() }
}
impl VarArrayPattern {
pub const fn new(l_sqbr: Token, elems: Vars, r_sqbr: Token) -> Self {
Self{ l_sqbr, elems, r_sqbr }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct VarTuplePattern {
paren: Option<(Token, Token)>,
pub(crate) elems: Vars,
}
impl fmt::Display for VarTuplePattern {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "({})", self.elems)
}
}
impl Locational for VarTuplePattern {
fn loc(&self) -> Location {
match &self.paren {
Some((l, r)) => Location::concat(l, r),
None => Location::concat(&self.elems[0], self.elems.last().unwrap()),
}
}
}
impl Stream<VarSignature> for VarTuplePattern {
#[inline]
fn payload(self) -> Vec<VarSignature> { self.elems.payload() }
#[inline]
fn ref_payload(&self) -> &Vec<VarSignature> { self.elems.ref_payload() }
#[inline]
fn ref_mut_payload(&mut self) -> &mut Vec<VarSignature> { self.elems.ref_mut_payload() }
}
impl VarTuplePattern {
pub const fn new(paren: Option<(Token, Token)>, elems: Vars) -> Self {
Self{ paren, elems }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct VarRecordPattern {
l_brace: Token,
pub(crate) elems: Vars,
r_brace: Token,
}
impl fmt::Display for VarRecordPattern {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{{{}}}", self.elems)
}
}
impl_locational!(VarRecordPattern, l_brace, r_brace);
impl VarRecordPattern {
pub const fn new(l_brace: Token, elems: Vars, r_brace: Token) -> Self {
Self{ l_brace, elems, r_brace }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum VarPattern {
Discard(Token),
VarName(VarName),
SelfDot(VarName), Array(VarArrayPattern),
Tuple(VarTuplePattern),
Record(VarRecordPattern),
}
impl NestedDisplay for VarPattern {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
match self {
Self::Discard(_) => write!(f, "_"),
Self::VarName(n) => write!(f, "{}", n),
Self::SelfDot(n) => write!(f, "self.{}", n),
Self::Array(a) => write!(f, "{}", a),
Self::Tuple(t) => write!(f, "{}", t),
Self::Record(r) => write!(f, "{}", r),
}
}
}
impl_display_from_nested!(VarPattern);
impl_locational_for_enum!(VarPattern; Discard, VarName, SelfDot, Array, Tuple, Record);
impl VarPattern {
pub const fn inspect(&self) -> Option<&Str> {
match self {
Self::VarName(n) | Self::SelfDot(n) => Some(n.inspect()),
_ => None,
}
}
pub fn inspects(&self) -> Vec<&Str> {
match self {
Self::VarName(n) | Self::SelfDot(n) => vec![n.inspect()],
Self::Array(VarArrayPattern{ elems, .. })
| Self::Tuple(VarTuplePattern{ elems, .. })
| Self::Record(VarRecordPattern{ elems, .. }) => {
elems.iter().map(|s| s.pat.inspects()).flatten().collect()
}
_ => vec![],
}
}
pub fn is_procedural(&self) -> bool {
match self {
Self::VarName(n) | Self::SelfDot(n) => n.is_procedural(),
_ => false,
}
}
pub fn is_const(&self) -> bool {
match self {
Self::VarName(n) | Self::SelfDot(n) => n.is_const(),
_ => false,
}
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct VarSignature {
pub pat: VarPattern,
pub t_spec: Option<TypeSpec>,
}
impl NestedDisplay for VarSignature {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "{}{}", self.pat, fmt_option!(pre ": ", &self.t_spec))
}
}
impl_display_from_nested!(VarSignature);
impl Locational for VarSignature {
fn loc(&self) -> Location {
if let Some(t_spec) = &self.t_spec {
Location::concat(&self.pat, t_spec)
} else {
self.pat.loc()
}
}
}
impl VarSignature {
pub const fn new(pat: VarPattern, t_spec: Option<TypeSpec>) -> Self { Self{ pat, t_spec } }
pub const fn inspect(&self) -> Option<&Str> { self.pat.inspect() }
pub fn is_const(&self) -> bool { self.pat.is_const() }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Vars {
elems: Vec<VarSignature>,
}
impl NestedDisplay for Vars {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "{}", fmt_vec(&self.elems))
}
}
impl_display_from_nested!(Vars);
impl_stream!(Vars, VarSignature, elems);
impl Vars {
pub const fn new(elems: Vec<VarSignature>) -> Self { Self { elems } }
pub const fn empty() -> Self { Self::new(vec![]) }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ParamArrayPattern {
l_sqbr: Token,
pub elems: Params,
r_sqbr: Token,
}
impl NestedDisplay for ParamArrayPattern {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "[{}]", self.elems)
}
}
impl_display_from_nested!(ParamArrayPattern);
impl_locational!(ParamArrayPattern, l_sqbr, r_sqbr);
impl ParamArrayPattern {
pub const fn new(l_sqbr: Token, elems: Params, r_sqbr: Token) -> Self {
Self{ l_sqbr, elems, r_sqbr }
}
pub fn is_empty(&self) -> bool { self.elems.is_empty() }
pub fn len(&self) -> usize { self.elems.len() }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct ParamRecordPattern {
l_brace: Token,
pub(crate) elems: Params,
r_brace: Token,
}
impl NestedDisplay for ParamRecordPattern {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
write!(f, "{{{}}}", self.elems)
}
}
impl_display_from_nested!(ParamRecordPattern);
impl_locational!(ParamRecordPattern, l_brace, r_brace);
impl ParamRecordPattern {
pub const fn new(l_brace: Token, elems: Params, r_brace: Token) -> Self {
Self{ l_brace, elems, r_brace }
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum ParamPattern {
Discard(Token),
VarName(VarName),
VarArgsName(VarName),
Lit(Literal),
Array(ParamArrayPattern),
Record(ParamRecordPattern),
}
impl_display_for_enum!(ParamPattern; Discard, VarName, VarArgsName, Lit, Array, Record);
impl_locational_for_enum!(ParamPattern; Discard, VarName, VarArgsName, Lit, Array, Record);
impl ParamPattern {
pub const fn inspect(&self) -> Option<&Str> {
match self {
Self::VarName(n)
| Self::VarArgsName(n) => Some(n.inspect()),
_ => None,
}
}
pub const fn is_lit(&self) -> bool { matches!(self, Self::Lit(_)) }
pub fn is_procedural(&self) -> bool {
match self {
Self::Discard(_) => true,
Self::VarName(n)
| Self::VarArgsName(n) => n.is_procedural(),
_ => false,
}
}
pub fn is_const(&self) -> bool {
match self {
Self::Discard(_) => true,
Self::VarName(n)
| Self::VarArgsName(n) => n.is_const(),
_ => false,
}
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct NonDefaultParamSignature {
pub pat: ParamPattern,
pub t_spec: Option<TypeSpec>,
}
impl NestedDisplay for NonDefaultParamSignature {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, _level: usize) -> std::fmt::Result {
write!(f, "{}{}", self.pat, fmt_option!(pre ": ", &self.t_spec))
}
}
impl_display_from_nested!(NonDefaultParamSignature);
impl Locational for NonDefaultParamSignature {
fn loc(&self) -> Location {
if let Some(t_spec) = &self.t_spec { Location::concat(&self.pat, t_spec) }
else { self.pat.loc() }
}
}
impl NonDefaultParamSignature {
pub const fn new(pat: ParamPattern, t_spec: Option<TypeSpec>) -> Self {
Self{ pat, t_spec }
}
pub const fn inspect(&self) -> Option<&Str> { self.pat.inspect() }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct DefaultParamSignature {
pub pat: ParamPattern,
pub t_spec: Option<TypeSpec>,
pub val: ConstExpr,
}
impl NestedDisplay for DefaultParamSignature {
fn fmt_nest(&self, f: &mut std::fmt::Formatter<'_>, _level: usize) -> std::fmt::Result {
write!(f, "{}{} |= {}", self.pat, fmt_option!(pre ": ", &self.t_spec), self.val)
}
}
impl_display_from_nested!(DefaultParamSignature);
impl Locational for DefaultParamSignature {
fn loc(&self) -> Location {
Location::concat(&self.pat, &self.val)
}
}
impl DefaultParamSignature {
pub const fn new(pat: ParamPattern, t_spec: Option<TypeSpec>, val: ConstExpr) -> Self {
Self{ pat, t_spec, val }
}
pub const fn inspect(&self) -> Option<&Str> { self.pat.inspect() }
}
pub trait ParamSig {
fn pat(&self) -> &ParamPattern;
fn t_spec(&self) -> Option<&TypeSpec>;
}
impl ParamSig for NonDefaultParamSignature {
fn pat(&self) -> &ParamPattern { &self.pat }
fn t_spec(&self) -> Option<&TypeSpec> { self.t_spec.as_ref() }
}
impl ParamSig for DefaultParamSignature {
fn pat(&self) -> &ParamPattern { &self.pat }
fn t_spec(&self) -> Option<&TypeSpec> { self.t_spec.as_ref() }
}
impl ParamSig for &NonDefaultParamSignature {
fn pat(&self) -> &ParamPattern { &self.pat }
fn t_spec(&self) -> Option<&TypeSpec> { self.t_spec.as_ref() }
}
impl ParamSig for &DefaultParamSignature {
fn pat(&self) -> &ParamPattern { &self.pat }
fn t_spec(&self) -> Option<&TypeSpec> { self.t_spec.as_ref() }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Params {
pub non_defaults: Vec<NonDefaultParamSignature>,
pub defaults: Vec<DefaultParamSignature>,
pub parens: Option<(Token, Token)>,
}
impl fmt::Display for Params {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "({}, {})", fmt_vec(&self.non_defaults), fmt_vec(&self.defaults))
}
}
impl Locational for Params {
fn loc(&self) -> Location {
if let Some((l, r)) = &self.parens {
Location::concat(l, r)
} else if !self.non_defaults.is_empty() {
Location::concat(&self.non_defaults[0], self.non_defaults.last().unwrap())
} else if !self.defaults.is_empty() {
Location::concat(&self.defaults[0], self.defaults.last().unwrap())
} else {
panic!()
}
}
}
impl Params {
pub const fn new(non_defaults: Vec<NonDefaultParamSignature>, defaults: Vec<DefaultParamSignature>, parens: Option<(Token, Token)>) -> Self {
Self { non_defaults, defaults, parens }
}
pub fn deconstruct(self) -> (Vec<NonDefaultParamSignature>, Vec<DefaultParamSignature>, Option<(Token, Token)>) {
(self.non_defaults, self.defaults, self.parens)
}
#[inline]
pub fn len(&self) -> usize { self.non_defaults.len() + self.defaults.len() }
#[inline]
pub fn is_empty(&self) -> bool { self.len() == 0 }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct SubrSignature {
pub decorators: Set<Decorator>,
pub name: VarName,
pub params: Params,
pub return_t_spec: Option<TypeSpec>,
pub bounds: TypeBoundSpecs,
}
impl NestedDisplay for SubrSignature {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, _level: usize) -> fmt::Result {
if self.bounds.is_empty() {
write!(f, "{}{}{}", self.name, self.params, fmt_option!(pre ": ", &self.return_t_spec))
} else {
write!(f, "{}|{}|{}{}", self.name, self.bounds, self.params, fmt_option!(pre ": ", &self.return_t_spec))
}
}
}
impl_display_from_nested!(SubrSignature);
impl Locational for SubrSignature {
fn loc(&self) -> Location {
if !self.bounds.is_empty() {
Location::concat(&self.name, &self.bounds)
} else if let Some(return_t) = &self.return_t_spec {
Location::concat(&self.name, return_t)
} else {
Location::concat(&self.name, &self.params)
}
}
}
impl SubrSignature {
pub const fn new(
decorators: Set<Decorator>,
name: VarName,
params: Params,
return_t: Option<TypeSpec>,
bounds: TypeBoundSpecs) -> Self {
Self{ decorators, name, params, return_t_spec: return_t, bounds }
}
pub fn is_const(&self) -> bool { self.name.is_const() }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct LambdaSignature {
pub params: Params,
pub return_t_spec: Option<TypeSpec>,
pub bounds: TypeBoundSpecs,
}
impl fmt::Display for LambdaSignature {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if self.bounds.is_empty() {
write!(f, "{}{}", self.params, fmt_option!(pre ": ", &self.return_t_spec))
} else {
write!(f, "|{}|{}{}", self.bounds, self.params, fmt_option!(pre ": ", &self.return_t_spec))
}
}
}
impl Locational for LambdaSignature {
fn loc(&self) -> Location {
if !self.bounds.is_empty() {
Location::concat(&self.params, &self.bounds)
} else if let Some(return_t) = &self.return_t_spec {
Location::concat(&self.params, return_t)
} else if self.params.is_empty() && self.params.parens.is_none() {
unreachable!()
} else {
self.params.loc()
}
}
}
impl LambdaSignature {
pub const fn new(params: Params, return_t: Option<TypeSpec>, bounds: TypeBoundSpecs) -> Self {
Self { params, return_t_spec: return_t, bounds }
}
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub struct DefId(pub usize);
impl DefId {
pub fn inc(&mut self) { self.0 += 1; }
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Lambda {
pub sig: LambdaSignature,
pub op: Token,
pub body: Block,
pub id: DefId,
}
impl NestedDisplay for Lambda {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, level: usize) -> fmt::Result {
write!(f, "{} {}\n", self.sig, self.op.content)?;
self.body.fmt_nest(f, level + 1)
}
}
impl_display_from_nested!(Lambda);
impl Lambda {
pub const fn new(sig: LambdaSignature, op: Token, body: Block, id : DefId) -> Self {
Self { sig, op, body, id }
}
pub fn is_procedural(&self) -> bool { self.op.is(TokenKind::ProcArrow) }
}
impl_locational!(Lambda, sig, body);
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub enum Signature {
Var(VarSignature),
Subr(SubrSignature),
}
impl_nested_display_for_enum!(Signature; Var, Subr);
impl_display_from_nested!(Signature);
impl_locational_for_enum!(Signature; Var, Subr);
impl Signature {
pub fn name_as_str(&self) -> &Str {
match self {
Self::Var(v) => v.pat.inspect().unwrap(),
Self::Subr(s) => &s.name.inspect(),
}
}
pub fn name(&self) -> Option<&VarName> {
match self {
Self::Var(v) => if let VarPattern::VarName(v) = &v.pat { Some(v) } else { None },
Self::Subr(s) => Some(&s.name),
}
}
pub fn t_spec(&self) -> Option<&TypeSpec> {
match self {
Self::Var(v) => v.t_spec.as_ref(),
Self::Subr(c) => c.return_t_spec.as_ref(),
}
}
pub fn is_const(&self) -> bool {
match self {
Self::Var(v) => v.is_const(),
Self::Subr(s) => s.is_const(),
}
}
}
pub type Decl = Signature;
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct DefBody {
pub op: Token,
pub block: Block,
pub id : DefId,
}
impl_locational!(DefBody, op, block);
impl DefBody {
pub const fn new(op: Token, block: Block, id: DefId) -> Self { Self { op, block, id } }
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Def {
pub sig: Signature,
pub body: DefBody,
}
impl NestedDisplay for Def {
fn fmt_nest(&self, f: &mut fmt::Formatter<'_>, level: usize) -> fmt::Result {
write!(f, "{} {}\n", self.sig, self.body.op.content)?;
self.body.block.fmt_nest(f, level + 1)
}
}
impl_display_from_nested!(Def);
impl_locational!(Def, sig, body);
impl Def {
pub const fn new(sig: Signature, body: DefBody) -> Self { Self { sig, body } }
pub fn is_const(&self) -> bool { self.sig.is_const() }
pub const fn is_subr(&self) -> bool {
matches!(&self.sig, Signature::Subr(_))
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum Expr {
Lit(Literal),
Accessor(Accessor),
Array(Array),
Dict(Dict),
BinOp(BinOp),
UnaryOp(UnaryOp),
Call(Call),
Lambda(Lambda),
Decl(Decl),
Def(Def),
}
impl_nested_display_for_enum!(Expr; Lit, Accessor, Array, Dict, BinOp, UnaryOp, Call, Lambda, Decl, Def);
impl_display_from_nested!(Expr);
impl_locational_for_enum!(Expr; Lit, Accessor, Array, Dict, BinOp, UnaryOp, Call, Lambda, Decl, Def);
impl Expr {
pub fn is_match_call(&self) -> bool {
matches!(self, Expr::Call(Call{ obj, .. }) if obj.get_name().map(|s| &s[..] == "match").unwrap_or(false))
}
pub fn is_const_acc(&self) -> bool {
matches!(self, Expr::Accessor(acc) if acc.is_const())
}
pub fn get_name(&self) -> Option<&Str> {
match self {
Expr::Accessor(acc) => acc.name(),
_ => None,
}
}
pub fn local(name: &str, lineno: usize, col_begin: usize) -> Self {
Self::Accessor(Accessor::local(Token::new(TokenKind::Symbol, Str::rc(name), lineno, col_begin)))
}
pub fn dummy_local(name: &str) -> Self {
Self::Accessor(Accessor::local(Token::from_str(TokenKind::Symbol, name)))
}
pub fn static_local(name: &'static str) -> Self {
Self::Accessor(Accessor::local(Token::static_symbol(name)))
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Module(Vec<Expr>);
impl fmt::Display for Module {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt_lines(self.0.iter(), f, 0)
}
}
impl Locational for Module {
fn loc(&self) -> Location {
Location::concat(self.0.first().unwrap(), self.0.last().unwrap())
}
}
impl_stream_for_wrapper!(Module, Expr);
#[derive(Debug)]
pub struct AST {
pub name: Str,
pub module: Module,
}
impl_display_for_single_struct!(AST, module);
impl AST {
pub const fn new(name: Str, module: Module) -> Self { Self { name, module } }
pub fn is_empty(&self) -> bool { self.module.is_empty() }
}