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pub mod code_block;
pub mod declaration;
pub mod expression;
pub mod modes;
pub(crate) use expression::*;
pub(crate) use modes::*;
use crate::{
language::{parsed::*, ty},
semantic_analysis::*,
type_system::*,
Engines, Ident,
};
use sway_error::{
handler::{ErrorEmitted, Handler},
warning::{CompileWarning, Warning},
};
use sway_types::{span::Span, Spanned};
use super::collection_context::SymbolCollectionContext;
impl ty::TyAstNode {
pub(crate) fn collect(
handler: &Handler,
engines: &Engines,
ctx: &mut SymbolCollectionContext,
node: &AstNode,
) -> Result<(), ErrorEmitted> {
match node.content.clone() {
AstNodeContent::UseStatement(_a) => {}
AstNodeContent::IncludeStatement(_i) => (),
AstNodeContent::Declaration(decl) => ty::TyDecl::collect(handler, engines, ctx, decl)?,
AstNodeContent::Expression(_expr) => (),
AstNodeContent::Error(_spans, _err) => (),
};
Ok(())
}
pub(crate) fn type_check(
handler: &Handler,
mut ctx: TypeCheckContext,
node: &AstNode,
) -> Result<Self, ErrorEmitted> {
let type_engine = ctx.engines.te();
let decl_engine = ctx.engines.de();
let engines = ctx.engines();
let node = ty::TyAstNode {
content: match node.content.clone() {
AstNodeContent::UseStatement(a) => {
let mut is_external = false;
if let Some(submodule) = ctx
.namespace()
.module(engines)
.submodule(engines, &[a.call_path[0].clone()])
{
is_external = submodule.read(engines, |m| m.is_external);
}
let path = if is_external || a.is_absolute {
a.call_path.clone()
} else {
ctx.namespace().prepend_module_path(&a.call_path)
};
let _ = match a.import_type {
ImportType::Star => {
// try a standard starimport first
let star_import_handler = Handler::default();
let import = ctx.star_import(&star_import_handler, &path);
if import.is_ok() {
handler.append(star_import_handler);
import
} else {
// if it doesn't work it could be an enum star import
if let Some((enum_name, path)) = path.split_last() {
let variant_import_handler = Handler::default();
let variant_import = ctx.variant_star_import(
&variant_import_handler,
path,
enum_name,
);
if variant_import.is_ok() {
handler.append(variant_import_handler);
variant_import
} else {
handler.append(star_import_handler);
import
}
} else {
handler.append(star_import_handler);
import
}
}
}
ImportType::SelfImport(_) => {
ctx.self_import(handler, &path, a.alias.clone())
}
ImportType::Item(ref s) => {
// try a standard item import first
let item_import_handler = Handler::default();
let import =
ctx.item_import(&item_import_handler, &path, s, a.alias.clone());
if import.is_ok() {
handler.append(item_import_handler);
import
} else {
// if it doesn't work it could be an enum variant import
if let Some((enum_name, path)) = path.split_last() {
let variant_import_handler = Handler::default();
let variant_import = ctx.variant_import(
&variant_import_handler,
path,
enum_name,
s,
a.alias.clone(),
);
if variant_import.is_ok() {
handler.append(variant_import_handler);
variant_import
} else {
handler.append(item_import_handler);
import
}
} else {
handler.append(item_import_handler);
import
}
}
}
};
ty::TyAstNodeContent::SideEffect(ty::TySideEffect {
side_effect: ty::TySideEffectVariant::UseStatement(ty::TyUseStatement {
alias: a.alias,
call_path: a.call_path,
span: a.span,
is_absolute: a.is_absolute,
import_type: a.import_type,
}),
})
}
AstNodeContent::IncludeStatement(i) => {
ty::TyAstNodeContent::SideEffect(ty::TySideEffect {
side_effect: ty::TySideEffectVariant::IncludeStatement(
ty::TyIncludeStatement {
mod_name: i.mod_name,
span: i.span,
visibility: i.visibility,
},
),
})
}
AstNodeContent::Declaration(decl) => {
ty::TyAstNodeContent::Declaration(ty::TyDecl::type_check(handler, ctx, decl)?)
}
AstNodeContent::Expression(expr) => {
let mut ctx = ctx;
match expr.kind {
ExpressionKind::ImplicitReturn(_) => {
// Do not use any type annotation with implicit returns as that
// will later cause type inference errors when matching implicit block
// types.
}
_ => {
ctx = ctx
.with_help_text("")
.with_type_annotation(type_engine.insert(
engines,
TypeInfo::Unknown,
None,
));
}
}
let inner = ty::TyExpression::type_check(handler, ctx, &expr)
.unwrap_or_else(|err| ty::TyExpression::error(err, expr.span(), engines));
ty::TyAstNodeContent::Expression(inner)
}
AstNodeContent::Error(spans, err) => ty::TyAstNodeContent::Error(spans, err),
},
span: node.span.clone(),
};
if let ty::TyAstNode {
content: ty::TyAstNodeContent::Expression(ty::TyExpression { expression, .. }),
..
} = &node
{
match expression {
ty::TyExpressionVariant::ImplicitReturn(_) => {}
_ => {
if !node
.type_info(type_engine)
.can_safely_ignore(type_engine, decl_engine)
{
handler.emit_warn(CompileWarning {
warning_content: Warning::UnusedReturnValue {
r#type: engines.help_out(node.type_info(type_engine)).to_string(),
},
span: node.span.clone(),
})
};
}
}
}
Ok(node)
}
}