Enum SyntaxKind 

pub enum SyntaxKind {
    ERROR = 0,
    EOF,
    WHITESPACE,
    LINEBREAK,
    COMMENT_LINE,
    COMMENT_BLOCK,
    INTEGER,
    STRING,
    ADDRESS_LIT,
    IDENT_LIT,
    IDENT,
    KW_TRUE,
    KW_FALSE,
    KW_NONE,
    KW_ADDRESS,
    KW_BOOL,
    KW_FIELD,
    KW_GROUP,
    KW_SCALAR,
    KW_SIGNATURE,
    KW_STRING,
    KW_RECORD,
    KW_DYN,
    KW_IDENTIFIER,
    KW_FINAL_UPPER,
    KW_I8,
    KW_I16,
    KW_I32,
    KW_I64,
    KW_I128,
    KW_U8,
    KW_U16,
    KW_U32,
    KW_U64,
    KW_U128,
    KW_IF,
    KW_ELSE,
    KW_FOR,
    KW_IN,
    KW_RETURN,
    KW_LET,
    KW_CONST,
    KW_CONSTANT,
    KW_FINAL,
    KW_VIEW,
    KW_FN,
    KW_FN_UPPER,
    KW_STRUCT,
    KW_CONSTRUCTOR,
    KW_INTERFACE,
    KW_PROGRAM,
    KW_IMPORT,
    KW_MAPPING,
    KW_STORAGE,
    KW_NETWORK,
    KW_ALEO,
    KW_SCRIPT,
    KW_BLOCK,
    KW_PUBLIC,
    KW_PRIVATE,
    KW_AS,
    KW_SELF,
    KW_ASSERT,
    KW_ASSERT_EQ,
    KW_ASSERT_NEQ,
    L_PAREN,
    R_PAREN,
    L_BRACKET,
    R_BRACKET,
    L_BRACE,
    R_BRACE,
    COMMA,
    DOT,
    DOT_DOT,
    DOT_DOT_EQ,
    SEMICOLON,
    COLON,
    COLON_COLON,
    QUESTION,
    ARROW,
    FAT_ARROW,
    UNDERSCORE,
    AT,
    EQ,
    PLUS_EQ,
    MINUS_EQ,
    STAR_EQ,
    SLASH_EQ,
    PERCENT_EQ,
    STAR2_EQ,
    AMP2_EQ,
    PIPE2_EQ,
    AMP_EQ,
    PIPE_EQ,
    CARET_EQ,
    SHL_EQ,
    SHR_EQ,
    PLUS,
    MINUS,
    STAR,
    SLASH,
    PERCENT,
    STAR2,
    EQ2,
    BANG_EQ,
    LT,
    LT_EQ,
    GT,
    GT_EQ,
    AMP2,
    PIPE2,
    BANG,
    AMP,
    PIPE,
    CARET,
    SHL,
    SHR,
    ROOT,
    PROGRAM_DECL,
    IMPORT,
    MAIN_CONTENTS,
    MODULE_CONTENTS,
    FUNCTION_DEF,
    FINAL_FN_DEF,
    VIEW_FN_DEF,
    CONSTRUCTOR_DEF,
    STRUCT_DEF,
    RECORD_DEF,
    STRUCT_MEMBER,
    STRUCT_MEMBER_PUBLIC,
    STRUCT_MEMBER_PRIVATE,
    STRUCT_MEMBER_CONSTANT,
    MAPPING_DEF,
    STORAGE_DEF,
    GLOBAL_CONST,
    INTERFACE_DEF,
    FN_PROTOTYPE_DEF,
    RECORD_PROTOTYPE_DEF,
    ANNOTATION,
    ANNOTATION_PAIR,
    PARAM,
    PARAM_PUBLIC,
    PARAM_PRIVATE,
    PARAM_CONSTANT,
    PARAM_LIST,
    RETURN_TYPE,
    CONST_PARAM,
    CONST_PARAM_LIST,
    CONST_ARG_LIST,
    DYNAMIC_CALL_RETURN_TYPE,
    ARRAY_LENGTH,
    LET_STMT,
    CONST_STMT,
    RETURN_STMT,
    EXPR_STMT,
    ASSIGN_STMT,
    COMPOUND_ASSIGN_STMT,
    IF_STMT,
    FOR_STMT,
    FOR_INCLUSIVE_STMT,
    BLOCK,
    ASSERT_STMT,
    ASSERT_EQ_STMT,
    ASSERT_NEQ_STMT,
    IDENT_PATTERN,
    TUPLE_PATTERN,
    WILDCARD_PATTERN,
    BINARY_EXPR,
    UNARY_EXPR,
    CALL_EXPR,
    METHOD_CALL_EXPR,
    FIELD_EXPR,
    INDEX_EXPR,
    CAST_EXPR,
    TERNARY_EXPR,
    ARRAY_EXPR,
    TUPLE_EXPR,
    STRUCT_EXPR,
    STRUCT_LOCATOR_EXPR,
    STRUCT_FIELD_INIT,
    STRUCT_FIELD_SHORTHAND,
    PATH_EXPR,
    PATH_LOCATOR_EXPR,
    PROGRAM_REF_EXPR,
    SELF_EXPR,
    BLOCK_KW_EXPR,
    NETWORK_KW_EXPR,
    PAREN_EXPR,
    LITERAL_FIELD,
    LITERAL_GROUP,
    LITERAL_SCALAR,
    LITERAL_INT,
    LITERAL_STRING,
    LITERAL_ADDRESS,
    LITERAL_BOOL,
    LITERAL_NONE,
    LITERAL_IDENT,
    REPEAT_EXPR,
    FINAL_EXPR,
    TUPLE_ACCESS_EXPR,
    DYNAMIC_OP_EXPR,
    TYPE_PATH,
    TYPE_PRIMITIVE,
    TYPE_LOCATOR,
    TYPE_ARRAY,
    TYPE_VECTOR,
    TYPE_TUPLE,
    TYPE_OPTIONAL,
    TYPE_FINAL,
    TYPE_MAPPING,
    TYPE_DYN_RECORD,
    PARENT_LIST,
    // some variants omitted
}

All syntax kinds for Leo tokens and nodes.

This enum is intentionally flat (not nested) to satisfy rowan’s requirement for a #[repr(u16)] type. Categories are indicated by comments and helper methods like is_trivia() and is_keyword().

Variants

ERROR = 0

Error node for wrapping parse errors and invalid tokens.

EOF

End of file marker.

WHITESPACE

Horizontal whitespace: spaces, tabs, form feeds.

LINEBREAK

Line breaks: \n or \r\n.

COMMENT_LINE

Line comment: // …

COMMENT_BLOCK

Block comment: /* … */

INTEGER

Integer literal: 123, 0xFF, 0b101, 0o77

STRING

String literal: “…”

ADDRESS_LIT

Address literal: aleo1…

IDENT_LIT

Identifier literal: ‘foo’

IDENT

Identifier: foo, Bar, _baz Note: Complex identifiers (paths, program IDs, locators) are deferred to Phase 2. The lexer produces simple IDENT tokens; the parser handles disambiguation of foo::bar, foo.aleo, foo.aleo::bar patterns.

KW_TRUE

true

KW_FALSE

false

KW_NONE

none

KW_ADDRESS

address

KW_BOOL

bool

KW_FIELD

field

KW_GROUP

group

KW_SCALAR

scalar

KW_SIGNATURE

signature

KW_STRING

string

KW_RECORD

record

KW_DYN

dyn

KW_IDENTIFIER

identifier

KW_FINAL_UPPER

Final

KW_I8

i8

KW_I16

i16

KW_I32

i32

KW_I64

i64

KW_I128

i128

KW_U8

u8

KW_U16

u16

KW_U32

u32

KW_U64

u64

KW_U128

u128

KW_IF

if

KW_ELSE

else

KW_FOR

for

KW_IN

in

KW_RETURN

return

KW_LET

let

KW_CONST

const

KW_CONSTANT

constant

KW_FINAL

final

KW_VIEW

view

KW_FN

fn

KW_FN_UPPER

Fn

KW_STRUCT

struct

KW_CONSTRUCTOR

constructor

KW_INTERFACE

interface

KW_PROGRAM

program

KW_IMPORT

import

KW_MAPPING

mapping

KW_STORAGE

storage

KW_NETWORK

network

KW_ALEO

aleo

KW_SCRIPT

script

KW_BLOCK

block

KW_PUBLIC

public

KW_PRIVATE

private

KW_AS

as

KW_SELF

self

KW_ASSERT

assert

KW_ASSERT_EQ

assert_eq

KW_ASSERT_NEQ

assert_neq

L_PAREN

(

R_PAREN

)

L_BRACKET

[

R_BRACKET

]

L_BRACE

{

R_BRACE

}

COMMA

,

DOT

.

DOT_DOT

..

DOT_DOT_EQ

..=

SEMICOLON

;

COLON

:

COLON_COLON

::

QUESTION

?

ARROW

->

FAT_ARROW

=>

UNDERSCORE

_

AT

@

EQ

=

PLUS_EQ

+=

MINUS_EQ

-=

STAR_EQ

*=

SLASH_EQ

/=

PERCENT_EQ

%=

STAR2_EQ

**=

AMP2_EQ

&&=

PIPE2_EQ

||=

AMP_EQ

&=

PIPE_EQ

|=

CARET_EQ

^=

SHL_EQ

<<=

SHR_EQ

>>=

PLUS

+

MINUS

-

STAR

*

SLASH

/

PERCENT

%

STAR2

**

EQ2

==

BANG_EQ

!=

LT

<

LT_EQ

<=

GT

>

GT_EQ

>=

AMP2

&&

PIPE2

||

BANG

!

AMP

&

PIPE

|

CARET

^

SHL

<<

SHR

>>

ROOT

Root node of the syntax tree.

PROGRAM_DECL

Program declaration: program foo.aleo { ... }

IMPORT

Import statement: import foo.aleo;

MAIN_CONTENTS

Main file contents.

MODULE_CONTENTS

Module file contents.

FUNCTION_DEF

Function definition.

FINAL_FN_DEF

Final function definition: final fn ...

VIEW_FN_DEF

View function definition: view fn .... Read-only V15 entry point.

CONSTRUCTOR_DEF

Constructor definition.

STRUCT_DEF

Struct definition.

RECORD_DEF

Record definition.

STRUCT_MEMBER

Struct member declaration.

STRUCT_MEMBER_PUBLIC

Public struct member: public name: Type

STRUCT_MEMBER_PRIVATE

Private struct member: private name: Type

STRUCT_MEMBER_CONSTANT

Constant struct member: constant name: Type

MAPPING_DEF

Mapping definition.

STORAGE_DEF

Storage definition.

GLOBAL_CONST

Global constant definition.

INTERFACE_DEF

Interface declaration.

FN_PROTOTYPE_DEF

Function prototype (in interface).

RECORD_PROTOTYPE_DEF

Record prototype (in interface).

ANNOTATION

Annotation: @foo

ANNOTATION_PAIR

Annotation key-value pair: key = "value"

PARAM

Parameter in a function signature.

PARAM_PUBLIC

Public parameter: public name: Type

PARAM_PRIVATE

Private parameter: private name: Type

PARAM_CONSTANT

Constant parameter: constant name: Type

PARAM_LIST

Parameter list: (a: u32, b: u32)

RETURN_TYPE

Function output type.

CONST_PARAM

Const generic parameter.

CONST_PARAM_LIST

Const generic parameter list.

CONST_ARG_LIST

Const generic argument list.

DYNAMIC_CALL_RETURN_TYPE

Visibility-annotated return type for _dynamic_call (e.g. public u64).

ARRAY_LENGTH

Array length expression wrapper in [T; N].

LET_STMT

Let statement: let x = ...;

CONST_STMT

Const statement: const x = ...;

RETURN_STMT

Return statement: return ...;

EXPR_STMT

Expression statement: foo();

ASSIGN_STMT

Assignment statement: x = ...;

COMPOUND_ASSIGN_STMT

Compound assignment statement: x += ...;, x -= ...;, etc.

IF_STMT

If statement: if ... { } else { }

FOR_STMT

For loop: for i in 0..10 { }

FOR_INCLUSIVE_STMT

Inclusive for loop: for i in 0..=10 { }

BLOCK

Block: { ... }

ASSERT_STMT

Assert statement: assert(...);

ASSERT_EQ_STMT

Assert equals statement: assert_eq(...);

ASSERT_NEQ_STMT

Assert not equals statement: assert_neq(...);

IDENT_PATTERN

Identifier pattern: x

TUPLE_PATTERN

Tuple pattern: (a, b, c)

WILDCARD_PATTERN

Wildcard pattern: _

BINARY_EXPR

Binary expression: a + b

UNARY_EXPR

Unary expression: !a, -a

CALL_EXPR

Function call: foo(a, b)

METHOD_CALL_EXPR

Method call: a.foo(b)

FIELD_EXPR

Member access: a.b

INDEX_EXPR

Array/tuple index: a[0]

CAST_EXPR

Cast expression: a as u32

TERNARY_EXPR

Ternary expression: a ? b : c

ARRAY_EXPR

Array literal: [1, 2, 3]

TUPLE_EXPR

Tuple literal: (1, 2, 3)

STRUCT_EXPR

Struct literal: Foo { a: 1, b: 2 }

STRUCT_LOCATOR_EXPR

Struct locator literal: program.aleo::Type { a: 1, b: 2 }

STRUCT_FIELD_INIT

Struct field initializer: a: 1

STRUCT_FIELD_SHORTHAND

Struct field shorthand: { x } (equivalent to { x: x })

PATH_EXPR

Path expression: foo::bar

PATH_LOCATOR_EXPR

Path locator expression: program.aleo::function

PROGRAM_REF_EXPR

Program reference expression: name.aleo (without ::Type suffix).

SELF_EXPR

Self expression: self

BLOCK_KW_EXPR

Block keyword expression: block

NETWORK_KW_EXPR

Network keyword expression: network

PAREN_EXPR

Parenthesized expression: (a + b)

LITERAL_FIELD

Field literal: 42field

LITERAL_GROUP

Group literal: 42group

LITERAL_SCALAR

Scalar literal: 42scalar

LITERAL_INT

Integer literal: 42u32, 42 (unsuffixed)

LITERAL_STRING

String literal: "hello"

LITERAL_ADDRESS

Address literal: aleo1...

LITERAL_BOOL

Boolean literal: true, false

LITERAL_NONE

None literal: none

LITERAL_IDENT

Identifier literal: 'foo'

REPEAT_EXPR

Repeat expression: [0u8; 32]

FINAL_EXPR

Async expression: async foo()

TUPLE_ACCESS_EXPR

Tuple access: a.0

DYNAMIC_OP_EXPR

Dynamic interface access. Covers three surface forms:

• function call: Interface @ (target) :: func(args)
• storage/vector op: Interface @ (target) :: member.op(args)
• singleton bare read: Interface @ (target) :: storage

TYPE_PATH

Named/path type: Foo, foo::Bar

TYPE_PRIMITIVE

Primitive type: u32, bool, field, etc.

TYPE_LOCATOR

Locator type: program.aleo::Type

TYPE_ARRAY

Array type: [u32; 10]

TYPE_VECTOR

Vector type: [u32]

TYPE_TUPLE

Tuple type: (u32, u32)

TYPE_OPTIONAL

Optional type: u32? (Future feature)

TYPE_FINAL

Final type: Final<Foo>

TYPE_MAPPING

Mapping type in storage.

TYPE_DYN_RECORD

Dynamic record type: dyn record

PARENT_LIST

Parent list: Foo + Bar

Implementations

impl SyntaxKind

pub fn is_trivia(self) -> bool

Check if this is a trivia token (whitespace or comment).

pub fn is_keyword(self) -> bool

Check if this is a keyword.

pub fn is_type_keyword(self) -> bool

Check if this is a type keyword.

pub fn is_literal(self) -> bool

Check if this is a literal token.

pub fn is_literal_node(self) -> bool

Check if this is a literal node kind.

pub fn is_type(self) -> bool

Check if this is a type node kind.

pub fn is_expression(self) -> bool

Check if this is an expression node kind.

pub fn is_statement(self) -> bool

Check if this is a statement node kind.

pub fn is_punctuation(self) -> bool

Check if this is a punctuation token.

pub fn is_operator(self) -> bool

Check if this is an operator token.

pub fn user_friendly_name(self) -> &'static str

Returns a user-friendly name for this token kind, suitable for error messages.

Trait Implementations

impl Clone for SyntaxKind

fn clone(&self) -> SyntaxKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SyntaxKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<SyntaxKind> for SyntaxKind

fn from(kind: SyntaxKind) -> Self

Converts to this type from the input type.

impl Hash for SyntaxKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SyntaxKind

fn cmp(&self, other: &SyntaxKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SyntaxKind

fn eq(&self, other: &SyntaxKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for SyntaxKind

fn partial_cmp(&self, other: &SyntaxKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for SyntaxKind

impl Eq for SyntaxKind

impl StructuralPartialEq for SyntaxKind