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Add a few operators. Needs parser work

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This commit is contained in:
JT
2021-08-26 07:29:36 +12:00
parent 739425431a
commit 35c3622405
6 changed files with 546 additions and 21 deletions
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30
crates/nu-parser/src/parser.rs
View File

@ -8,6 +8,7 @@ use crate::{
parser_state::{Type, VarId},
signature::{Flag, PositionalArg},
BlockId, DeclId, Declaration, LiteBlock, ParseError, ParserWorkingSet, Signature, Span, Token,
TokenContents,
};
/// The syntactic shapes that values must match to be passed into a command. You can think of this as the type-checking that occurs when you call a function.
@ -1028,7 +1029,7 @@ impl<'a> ParserWorkingSet<'a> {
Expression {
expr: Expr::Float(x),
span,
ty: Type::Int,
ty: Type::Float,
},
None,
)
@ -1450,6 +1451,7 @@ impl<'a> ParserWorkingSet<'a> {
error = error.or(err);
let mut args: Vec<Arg> = vec![];
let mut rest: Option<Arg> = None;
let mut parse_mode = ParseMode::ArgMode;
for token in &output {
@ -1947,6 +1949,32 @@ impl<'a> ParserWorkingSet<'a> {
let (output, err) = lex(source, start, &[], &[]);
error = error.or(err);
// Check to see if we have parameters
let params = if matches!(
output.first(),
Some(Token {
contents: TokenContents::Pipe,
..
})
) {
// We've found a parameter list
let mut param_tokens = vec![];
let mut token_iter = output.iter().skip(1);
for token in &mut token_iter {
if matches!(
token,
Token {
contents: TokenContents::Pipe,
..
}
) {
break;
} else {
param_tokens.push(token);
}
}
};
let (output, err) = lite_parse(&output);
error = error.or(err);

211
crates/nu-parser/src/type_check.rs
View File

@ -18,27 +18,11 @@ impl<'a> ParserWorkingSet<'a> {
) -> (Type, Option<ParseError>) {
match &op.expr {
Expr::Operator(operator) => match operator {
Operator::Equal => (Type::Bool, None),
Operator::Multiply => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Int, None),
(Type::Unknown, _) => (Type::Unknown, None),
(_, Type::Unknown) => (Type::Unknown, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::Plus => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Int, None),
(Type::Float, Type::Int) => (Type::Float, None),
(Type::Int, Type::Float) => (Type::Float, None),
(Type::Float, Type::Float) => (Type::Float, None),
(Type::String, Type::String) => (Type::String, None),
(Type::Unknown, _) => (Type::Unknown, None),
(_, Type::Unknown) => (Type::Unknown, None),
@ -69,6 +53,195 @@ impl<'a> ParserWorkingSet<'a> {
)
}
},
Operator::Minus => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Int, None),
(Type::Float, Type::Int) => (Type::Float, None),
(Type::Int, Type::Float) => (Type::Float, None),
(Type::Float, Type::Float) => (Type::Float, None),
(Type::Unknown, _) => (Type::Unknown, None),
(_, Type::Unknown) => (Type::Unknown, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::Multiply => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Int, None),
(Type::Float, Type::Int) => (Type::Float, None),
(Type::Int, Type::Float) => (Type::Float, None),
(Type::Float, Type::Float) => (Type::Float, None),
(Type::Unknown, _) => (Type::Unknown, None),
(_, Type::Unknown) => (Type::Unknown, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::Divide => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Int, None),
(Type::Float, Type::Int) => (Type::Float, None),
(Type::Int, Type::Float) => (Type::Float, None),
(Type::Float, Type::Float) => (Type::Float, None),
(Type::Unknown, _) => (Type::Unknown, None),
(_, Type::Unknown) => (Type::Unknown, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::LessThan => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Bool, None),
(Type::Float, Type::Int) => (Type::Bool, None),
(Type::Int, Type::Float) => (Type::Bool, None),
(Type::Float, Type::Float) => (Type::Bool, None),
(Type::Unknown, _) => (Type::Bool, None),
(_, Type::Unknown) => (Type::Bool, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::LessThanOrEqual => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Bool, None),
(Type::Float, Type::Int) => (Type::Bool, None),
(Type::Int, Type::Float) => (Type::Bool, None),
(Type::Float, Type::Float) => (Type::Bool, None),
(Type::Unknown, _) => (Type::Bool, None),
(_, Type::Unknown) => (Type::Bool, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::GreaterThan => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Bool, None),
(Type::Float, Type::Int) => (Type::Bool, None),
(Type::Int, Type::Float) => (Type::Bool, None),
(Type::Float, Type::Float) => (Type::Bool, None),
(Type::Unknown, _) => (Type::Bool, None),
(_, Type::Unknown) => (Type::Bool, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::GreaterThanOrEqual => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Bool, None),
(Type::Float, Type::Int) => (Type::Bool, None),
(Type::Int, Type::Float) => (Type::Bool, None),
(Type::Float, Type::Float) => (Type::Bool, None),
(Type::Unknown, _) => (Type::Bool, None),
(_, Type::Unknown) => (Type::Bool, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::Equal => match (&lhs.ty, &rhs.ty) {
(Type::Float, Type::Int) => (Type::Bool, None),
(Type::Int, Type::Float) => (Type::Bool, None),
(x, y) if x == y => (Type::Bool, None),
(Type::Unknown, _) => (Type::Bool, None),
(_, Type::Unknown) => (Type::Bool, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
Operator::NotEqual => match (&lhs.ty, &rhs.ty) {
(Type::Int, Type::Int) => (Type::Bool, None),
(Type::Float, Type::Int) => (Type::Bool, None),
(Type::Int, Type::Float) => (Type::Bool, None),
(Type::Float, Type::Float) => (Type::Bool, None),
(Type::Unknown, _) => (Type::Bool, None),
(_, Type::Unknown) => (Type::Bool, None),
_ => {
*op = Expression::garbage(op.span);
(
Type::Unknown,
Some(ParseError::UnsupportedOperation(
op.span,
lhs.span,
lhs.ty.clone(),
rhs.span,
rhs.ty.clone(),
)),
)
}
},
_ => {
*op = Expression::garbage(op.span);