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TypeSingletonName broken out

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greg 2018-02-12 00:25:48 -08:00
parent 1f2a4c706f
commit ef4620e90a
2 changed files with 15 additions and 12 deletions
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23
src/schala_lang/parsing.rs
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@ -396,15 +396,15 @@ pub enum Statement {
} }
type ParamName = Rc<String>; type ParamName = Rc<String>;
type TraitName = Rc<String>; type TraitName = Rc<String>; //should be a singleton I think??
type FormalParam = (ParamName, Option<TypeName>); type FormalParam = (ParamName, Option<TypeName>);
#[derive(Debug, PartialEq, Clone)] #[derive(Debug, PartialEq, Clone)]
pub enum Declaration { pub enum Declaration {
FuncSig(Signature), FuncSig(Signature),
FuncDecl(Signature, Vec<Statement>), FuncDecl(Signature, Vec<Statement>),
TypeDecl(Rc<String>, TypeBody), TypeDecl(Rc<String>, TypeBody), //should have TypeSingletonName in it
TypeAlias(Rc<String>, Rc<String>), TypeAlias(Rc<String>, Rc<String>), //should have TypeSingletonName in it, or maybe just String, not sure
Binding { Binding {
name: Rc<String>, name: Rc<String>,
constant: bool, constant: bool,
@ -440,10 +440,13 @@ pub struct Expression(pub ExpressionType, pub Option<TypeName>);
#[derive(Debug, PartialEq, Clone)] #[derive(Debug, PartialEq, Clone)]
pub enum TypeName { pub enum TypeName {
Tuple(Vec<TypeName>), Tuple(Vec<TypeName>),
Singleton { Singleton(TypeSingletonName)
name: Rc<String>, }
params: Vec<TypeName>,
} #[derive(Debug, PartialEq, Clone)]
pub struct TypeSingletonName {
pub name: Rc<String>,
pub params: Vec<TypeName>,
} }
#[derive(Debug, PartialEq, Clone)] #[derive(Debug, PartialEq, Clone)]
@ -710,7 +713,7 @@ impl Parser {
let result = match (first, second) { let result = match (first, second) {
(first, Some(second)) => { (first, Some(second)) => {
match first { match first {
TypeName::Singleton { ref name, ref params } if params.len() == 0 => TypeName::Singleton(TypeSingletonName { ref name, ref params }) if params.len() == 0 =>
Declaration::Impl { type_name: second, trait_name: Some(name.clone()), block }, Declaration::Impl { type_name: second, trait_name: Some(name.clone()), block },
_ => return ParseError::new(&format!("Invalid name for a trait")), _ => return ParseError::new(&format!("Invalid name for a trait")),
} }
@ -746,13 +749,13 @@ impl Parser {
use self::TypeName::*; use self::TypeName::*;
Ok(match self.peek() { Ok(match self.peek() {
LParen => Tuple(delimited!(self, LParen, '(', type_name, Comma, RParen, ')')), LParen => Tuple(delimited!(self, LParen, '(', type_name, Comma, RParen, ')')),
_ => Singleton { _ => Singleton(TypeSingletonName {
name: self.identifier()?, name: self.identifier()?,
params: match self.peek() { params: match self.peek() {
LAngleBracket => delimited!(self, LAngleBracket, '<', type_name, Comma, RAngleBracket, '>'), LAngleBracket => delimited!(self, LAngleBracket, '<', type_name, Comma, RAngleBracket, '>'),
_ => vec![], _ => vec![],
} }
} })
}) })
}); });

4
src/schala_lang/type_check.rs
View File

@ -2,7 +2,7 @@ use std::collections::HashMap;
use std::rc::Rc; use std::rc::Rc;
use schala_lang::parsing::{AST, Statement, Declaration, Signature, Expression, ExpressionType, Operation, Variant, TypeName}; use schala_lang::parsing::{AST, Statement, Declaration, Signature, Expression, ExpressionType, Operation, Variant, TypeName, TypeSingletonName};
// from Niko's talk // from Niko's talk
/* fn type_check(expression, expected_ty) -> Ty { /* fn type_check(expression, expected_ty) -> Ty {
@ -234,7 +234,7 @@ impl TypeContext {
use self::TypeConst::*; use self::TypeConst::*;
match anno { match anno {
&TypeName::Singleton { ref name, .. } => { &TypeName::Singleton(TypeSingletonName { ref name, .. }) => {
match name.as_ref().as_ref() { match name.as_ref().as_ref() {
"Int" => TConst(Integer), "Int" => TConst(Integer),
"Float" => TConst(Float), "Float" => TConst(Float),