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Handwrite Stmt

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This commit is contained in:
Aleksey Kladov 2020-07-31 15:40:48 +02:00
parent 4d38b0dce1
commit a7ca6583fb
4 changed files with 62 additions and 52 deletions
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51
xtask/src/codegen/gen_syntax.rs
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@ -153,25 +153,10 @@ fn generate_nodes(kinds: KindsSrc<'_>, grammar: &AstSrc) -> Result<String> {
quote!(impl ast::#trait_name for #name {})
});
(
let ast_node = if en.name == "Stmt" {
quote! {}
} else {
quote! {
#[pretty_doc_comment_placeholder_workaround]
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum #name {
#(#variants(#variants),)*
}
#(#traits)*
},
quote! {
#(
impl From<#variants> for #name {
fn from(node: #variants) -> #name {
#name::#variants(node)
}
}
)*
impl AstNode for #name {
fn can_cast(kind: SyntaxKind) -> bool {
match kind {
@ -196,6 +181,28 @@ fn generate_nodes(kinds: KindsSrc<'_>, grammar: &AstSrc) -> Result<String> {
}
}
}
}
};
(
quote! {
#[pretty_doc_comment_placeholder_workaround]
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum #name {
#(#variants(#variants),)*
}
#(#traits)*
},
quote! {
#(
impl From<#variants> for #name {
fn from(node: #variants) -> #name {
#name::#variants(node)
}
}
)*
#ast_node
},
)
})
@ -497,13 +504,7 @@ fn lower(grammar: &Grammar) -> AstSrc {
let mut res = AstSrc::default();
res.tokens = vec!["Whitespace".into(), "Comment".into(), "String".into(), "RawString".into()];
let nodes = grammar
.iter()
.filter(|&node| match grammar[node].rule {
Rule::Node(it) if it == node => false,
_ => true,
})
.collect::<Vec<_>>();
let nodes = grammar.iter().collect::<Vec<_>>();
for &node in &nodes {
let name = grammar[node].name.clone();