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use oak_core::{ElementType, UniversalElementRole};
/// Element types for the Erlang language.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[repr(u8)]
pub enum ErlangElementType {
/// Whitespace characters.
Whitespace,
/// Newline characters.
Newline,
/// Comments.
Comment,
/// Identifiers.
Identifier,
/// Atoms.
Atom,
/// Variables.
Variable,
/// Numbers.
Number,
/// Strings.
String,
/// Characters.
Character,
/// `after` keyword.
After,
/// `and` keyword.
And,
/// `andalso` keyword.
Andalso,
/// `band` keyword.
Band,
/// `begin` keyword.
Begin,
/// `bnot` keyword.
Bnot,
/// `bor` keyword.
Bor,
/// `bsl` keyword.
Bsl,
/// `bsr` keyword.
Bsr,
/// `bxor` keyword.
Bxor,
/// `case` keyword.
Case,
/// `catch` keyword.
Catch,
/// `cond` keyword.
Cond,
/// `div` keyword.
Div,
/// `end` keyword.
End,
/// `fun` keyword.
Fun,
/// `if` keyword.
If,
/// `let` keyword.
Let,
/// `not` keyword.
Not,
/// `of` keyword.
Of,
/// `or` keyword.
Or,
/// `orelse` keyword.
Orelse,
/// `query` keyword.
Query,
/// `receive` keyword.
Receive,
/// `rem` keyword.
Rem,
/// `try` keyword.
Try,
/// `when` keyword.
When,
/// `xor` keyword.
Xor,
/// Plus operator (`+`).
Plus,
/// Minus operator (`-`).
Minus,
/// Star operator (`*`).
Star,
/// Slash operator (`/`).
Slash,
/// Equal operator (`=`).
Equal,
/// EqualEqual operator (`==`).
EqualEqual,
/// SlashEqual operator (`/=`).
SlashEqual,
/// EqualColonEqual operator (`=:=`).
EqualColonEqual,
/// EqualSlashEqual operator (`=/=`).
EqualSlashEqual,
/// Less operator (`<`).
Less,
/// Greater operator (`>`).
Greater,
/// LessEqual operator (`=<`).
LessEqual,
/// GreaterEqual operator (`>=`).
GreaterEqual,
/// PlusPlus operator (`++`).
PlusPlus,
/// MinusMinus operator (`--`).
MinusMinus,
/// Exclamation operator (`!`).
Exclamation,
/// Question operator (`?`).
Question,
/// Left parenthesis (`(`).
LeftParen,
/// Right parenthesis (`)`).
RightParen,
/// Left brace (`{`).
LeftBrace,
/// Right brace (`}`).
RightBrace,
/// Left bracket (`[`).
LeftBracket,
/// Right bracket (`]`).
RightBracket,
/// Comma (`,`).
Comma,
/// Semicolon (`;`).
Semicolon,
/// Dot (`.`).
Dot,
/// Colon (`:`).
Colon,
/// Arrow (`->`).
Arrow,
/// Pipe (`|`).
Pipe,
/// PipePipe (`||`).
PipePipe,
/// Hash (`#`).
Hash,
/// Root node of the Erlang AST.
Root,
/// An item in the module.
Item,
/// Module declaration.
Module,
/// Export attribute.
Export,
/// Generic attribute.
Attribute,
/// Function declaration.
Function,
/// A clause of a function.
FunctionClause,
/// A pattern matching expression.
Pattern,
/// A record pattern.
RecordPattern,
/// A statement.
Statement,
/// An expression.
Expr,
/// A binary expression.
BinaryExpr,
/// A function call.
CallExpr,
/// A fun expression.
FunExpr,
/// A case expression.
CaseExpr,
/// A clause in a case expression.
CaseClause,
/// An if expression.
IfExpr,
/// A clause in an if expression.
IfClause,
/// A try expression.
TryExpr,
/// A catch clause.
CatchClause,
/// A receive expression.
ReceiveExpr,
/// A clause in a receive expression.
ReceiveClause,
/// A record expression.
RecordExpr,
/// Error node.
Error,
/// End of file.
Eof,
}
impl ErlangElementType {
/// Returns `true` if the element type is a keyword.
pub fn is_keyword(&self) -> bool {
matches!(
self,
Self::After
| Self::And
| Self::Andalso
| Self::Band
| Self::Begin
| Self::Bnot
| Self::Bor
| Self::Bsl
| Self::Bsr
| Self::Bxor
| Self::Case
| Self::Catch
| Self::Cond
| Self::Div
| Self::End
| Self::Fun
| Self::If
| Self::Let
| Self::Not
| Self::Of
| Self::Or
| Self::Orelse
| Self::Query
| Self::Receive
| Self::Rem
| Self::Try
| Self::When
| Self::Xor
)
}
/// Returns `true` if the element type is an operator.
pub fn is_operator(&self) -> bool {
matches!(
self,
Self::Plus
| Self::Minus
| Self::Star
| Self::Slash
| Self::Equal
| Self::EqualEqual
| Self::SlashEqual
| Self::EqualColonEqual
| Self::EqualSlashEqual
| Self::Less
| Self::Greater
| Self::LessEqual
| Self::GreaterEqual
| Self::PlusPlus
| Self::MinusMinus
| Self::Exclamation
| Self::Question
)
}
/// Returns `true` if the element type is a punctuation.
pub fn is_punctuation(&self) -> bool {
matches!(self, Self::LeftParen | Self::RightParen | Self::LeftBrace | Self::RightBrace | Self::LeftBracket | Self::RightBracket | Self::Comma | Self::Semicolon | Self::Dot | Self::Colon | Self::Arrow | Self::Pipe | Self::PipePipe | Self::Hash)
}
}
impl ElementType for ErlangElementType {
type Role = UniversalElementRole;
fn role(&self) -> Self::Role {
match self {
Self::Root => UniversalElementRole::Root,
_ => UniversalElementRole::None,
}
}
}
impl From<crate::lexer::token_type::ErlangTokenType> for ErlangElementType {
fn from(token: crate::lexer::token_type::ErlangTokenType) -> Self {
use crate::lexer::token_type::ErlangTokenType;
match token {
ErlangTokenType::Whitespace => Self::Whitespace,
ErlangTokenType::Newline => Self::Newline,
ErlangTokenType::Comment => Self::Comment,
ErlangTokenType::Identifier => Self::Identifier,
ErlangTokenType::Atom => Self::Atom,
ErlangTokenType::Variable => Self::Variable,
ErlangTokenType::Number => Self::Number,
ErlangTokenType::String => Self::String,
ErlangTokenType::Character => Self::Character,
ErlangTokenType::After => Self::After,
ErlangTokenType::And => Self::And,
ErlangTokenType::Andalso => Self::Andalso,
ErlangTokenType::Band => Self::Band,
ErlangTokenType::Begin => Self::Begin,
ErlangTokenType::Bnot => Self::Bnot,
ErlangTokenType::Bor => Self::Bor,
ErlangTokenType::Bsl => Self::Bsl,
ErlangTokenType::Bsr => Self::Bsr,
ErlangTokenType::Bxor => Self::Bxor,
ErlangTokenType::Case => Self::Case,
ErlangTokenType::Catch => Self::Catch,
ErlangTokenType::Cond => Self::Cond,
ErlangTokenType::Div => Self::Div,
ErlangTokenType::End => Self::End,
ErlangTokenType::Fun => Self::Fun,
ErlangTokenType::If => Self::If,
ErlangTokenType::Let => Self::Let,
ErlangTokenType::Not => Self::Not,
ErlangTokenType::Of => Self::Of,
ErlangTokenType::Or => Self::Or,
ErlangTokenType::Orelse => Self::Orelse,
ErlangTokenType::Query => Self::Query,
ErlangTokenType::Receive => Self::Receive,
ErlangTokenType::Rem => Self::Rem,
ErlangTokenType::Try => Self::Try,
ErlangTokenType::When => Self::When,
ErlangTokenType::Xor => Self::Xor,
ErlangTokenType::Plus => Self::Plus,
ErlangTokenType::Minus => Self::Minus,
ErlangTokenType::Star => Self::Star,
ErlangTokenType::Slash => Self::Slash,
ErlangTokenType::Equal => Self::Equal,
ErlangTokenType::EqualEqual => Self::EqualEqual,
ErlangTokenType::SlashEqual => Self::SlashEqual,
ErlangTokenType::EqualColonEqual => Self::EqualColonEqual,
ErlangTokenType::EqualSlashEqual => Self::EqualSlashEqual,
ErlangTokenType::Less => Self::Less,
ErlangTokenType::Greater => Self::Greater,
ErlangTokenType::LessEqual => Self::LessEqual,
ErlangTokenType::GreaterEqual => Self::GreaterEqual,
ErlangTokenType::PlusPlus => Self::PlusPlus,
ErlangTokenType::MinusMinus => Self::MinusMinus,
ErlangTokenType::Exclamation => Self::Exclamation,
ErlangTokenType::Question => Self::Question,
ErlangTokenType::LeftParen => Self::LeftParen,
ErlangTokenType::RightParen => Self::RightParen,
ErlangTokenType::LeftBrace => Self::LeftBrace,
ErlangTokenType::RightBrace => Self::RightBrace,
ErlangTokenType::LeftBracket => Self::LeftBracket,
ErlangTokenType::RightBracket => Self::RightBracket,
ErlangTokenType::Comma => Self::Comma,
ErlangTokenType::Semicolon => Self::Semicolon,
ErlangTokenType::Dot => Self::Dot,
ErlangTokenType::Colon => Self::Colon,
ErlangTokenType::Arrow => Self::Arrow,
ErlangTokenType::Pipe => Self::Pipe,
ErlangTokenType::PipePipe => Self::PipePipe,
ErlangTokenType::Hash => Self::Hash,
ErlangTokenType::Root => Self::Root,
ErlangTokenType::Item => Self::Item,
ErlangTokenType::Module => Self::Module,
ErlangTokenType::Export => Self::Export,
ErlangTokenType::Attribute => Self::Attribute,
ErlangTokenType::Function => Self::Function,
ErlangTokenType::FunctionClause => Self::FunctionClause,
ErlangTokenType::Pattern => Self::Pattern,
ErlangTokenType::RecordPattern => Self::RecordPattern,
ErlangTokenType::Statement => Self::Statement,
ErlangTokenType::Expr => Self::Expr,
ErlangTokenType::BinaryExpr => Self::BinaryExpr,
ErlangTokenType::CallExpr => Self::CallExpr,
ErlangTokenType::FunExpr => Self::FunExpr,
ErlangTokenType::CaseExpr => Self::CaseExpr,
ErlangTokenType::CaseClause => Self::CaseClause,
ErlangTokenType::IfExpr => Self::IfExpr,
ErlangTokenType::IfClause => Self::IfClause,
ErlangTokenType::TryExpr => Self::TryExpr,
ErlangTokenType::CatchClause => Self::CatchClause,
ErlangTokenType::ReceiveExpr => Self::ReceiveExpr,
ErlangTokenType::ReceiveClause => Self::ReceiveClause,
ErlangTokenType::RecordExpr => Self::RecordExpr,
ErlangTokenType::Error => Self::Error,
ErlangTokenType::Eof => Self::Eof,
}
}
}