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cleanup casts

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This commit is contained in:
Aleksey Kladov 2019-07-19 18:22:00 +03:00
parent 8718a47088
commit 5c594bcb48
6 changed files with 975 additions and 850 deletions
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56
crates/ra_syntax/src/ast/generated.rs.tera
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@ -12,18 +12,34 @@ the below applies to the result of this template
#![cfg_attr(rustfmt, rustfmt_skip)]
use crate::{
SyntaxNode, SyntaxKind::*,
SyntaxNode, SyntaxKind::{self, *},
ast::{self, AstNode},
};
{% for node, methods in ast %}
// {{ node }}
{%- if methods.enum %}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct {{ node }} {
pub(crate) syntax: SyntaxNode,
}
impl AstNode for {{ node }} {
fn can_cast(kind: SyntaxKind) -> bool {
match kind {
{%- if methods.enum %}
{% for kind in methods.enum %} | {{ kind | SCREAM }} {%- endfor -%}
{% else %}
{{ node | SCREAM }}
{%- endif %} => true,
_ => false,
}
}
fn cast(syntax: SyntaxNode) -> Option<Self> {
if Self::can_cast(syntax.kind()) { Some({{ node }} { syntax }) } else { None }
}
fn syntax(&self) -> &SyntaxNode { &self.syntax }
}
{% if methods.enum %}
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum {{ node }}Kind {
{%- for kind in methods.enum %}
@ -33,25 +49,9 @@ pub enum {{ node }}Kind {
{%- for kind in methods.enum %}
impl From<{{ kind }}> for {{ node }} {
fn from(n: {{ kind }}) -> {{ node }} {
{{ node }}::cast(n.syntax).unwrap()
}
fn from(n: {{ kind }}) -> {{ node }} { {{ node }} { syntax: n.syntax } }
}
{%- endfor %}
impl AstNode for {{ node }} {
fn cast(syntax: SyntaxNode) -> Option<Self> {
match syntax.kind() {
{%- for kind in methods.enum %}
| {{ kind | SCREAM }}
{%- endfor %} => Some({{ node }} { syntax }),
_ => None,
}
}
fn syntax(&self) -> &SyntaxNode { &self.syntax }
}
impl {{ node }} {
pub fn kind(&self) -> {{ node }}Kind {
match self.syntax.kind() {
@ -62,22 +62,6 @@ impl {{ node }} {
}
}
}
{% else %}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct {{ node }} {
pub(crate) syntax: SyntaxNode,
}
impl AstNode for {{ node }} {
fn cast(syntax: SyntaxNode) -> Option<Self> {
match syntax.kind() {
{{ node | SCREAM }} => Some({{ node }} { syntax }),
_ => None,
}
}
fn syntax(&self) -> &SyntaxNode { &self.syntax }
}
{% endif %}
{% if methods.traits -%}