iowo/crates/lang/src/ast.rs

80 lines
1.9 KiB
Rust

use crate::lst_parser::syntax_kind::SyntaxKind::*;
use crate::SyntaxNode;
use rowan::Language;
// Heavily modified version of https://github.com/rust-analyzer/rowan/blob/e2d2e93e16c5104b136d0bc738a0d48346922200/examples/s_expressions.rs#L250-L266
macro_rules! ast_nodes {
($($ast:ident, $kind:ident);+) => {
$(
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
#[repr(transparent)]
pub struct $ast(SyntaxNode);
impl rowan::ast::AstNode for $ast {
type Language = crate::Lang;
fn can_cast(kind: <Self::Language as Language>::Kind) -> bool {
kind == $kind
}
fn cast(node: SyntaxNode) -> Option<Self> {
if node.kind() == $kind {
Some(Self(node))
} else {
None
}
}
fn syntax(&self) -> &SyntaxNode {
&self.0
}
}
)+
};
}
ast_nodes!(
Def, DEF;
DefName, DEF_NAME;
DefBody, DEF_BODY;
Mod, MODULE;
ModName, MODULE_NAME;
ModBody, MODULE_BODY;
Use, USE;
UsePat, USE_PAT;
PatItem, PAT_ITEM;
PatGlob, PAT_GLOB;
PatGroup, PAT_GROUP;
Literal, LITERAL;
IntLit, INT_NUM;
FloatLit, FLOAT_NUM;
StringLit, STRING;
Matrix, MATRIX;
MatrixRow, MAT_ROW;
Vector, VEC;
List, LIST;
CollectionItem, COLLECTION_ITEM;
ParenthesizedExpr, PARENTHESIZED_EXPR;
Expression, EXPR;
Pipeline, PIPELINE;
Instruction, INSTR;
InstructionName, INSTR_NAME;
InstructionParams, INSTR_PARAMS;
AttributeSet, ATTR_SET;
Attribute, ATTR;
AttributeName, ATTR_NAME;
AttributeValue, ATTR_VALUE;
ParseError, PARSE_ERR;
LexError, LEX_ERR;
Root, ROOT;
Eof, EOF
);