cairo-lang-parser 2.18.0

Cairo parser.
Documentation 
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//! > Test let-else

//! > test_runner_name
test_partial_parser_tree(expect_diagnostics: false)

//! > cairo_code
fn f() {
    let Some(x): u32 = 5 else {
        return;
    };
}

//! > top_level_kind
StatementLet

//! > ignored_kinds

//! > expected_diagnostics

//! > expected_tree
└── Top level kind: StatementLet
    ├── attributes (kind: AttributeList) []
    ├── let_kw (kind: TokenLet): 'let'
    ├── pattern (kind: PatternEnum)
    │   ├── path (kind: ExprPath)
    │   │   ├── dollar (kind: OptionTerminalDollarEmpty) []
    │   │   └── segments (kind: ExprPathInner)
    │   │       └── item #0 (kind: PathSegmentSimple)
    │   │           └── ident (kind: TokenIdentifier): 'Some'
    │   └── pattern (kind: PatternEnumInnerPattern)
    │       ├── lparen (kind: TokenLParen): '('
    │       ├── pattern (kind: ExprPath)
    │       │   ├── dollar (kind: OptionTerminalDollarEmpty) []
    │       │   └── segments (kind: ExprPathInner)
    │       │       └── item #0 (kind: PathSegmentSimple)
    │       │           └── ident (kind: TokenIdentifier): 'x'
    │       └── rparen (kind: TokenRParen): ')'
    ├── type_clause (kind: TypeClause)
    │   ├── colon (kind: TokenColon): ':'
    │   └── ty (kind: ExprPath)
    │       ├── dollar (kind: OptionTerminalDollarEmpty) []
    │       └── segments (kind: ExprPathInner)
    │           └── item #0 (kind: PathSegmentSimple)
    │               └── ident (kind: TokenIdentifier): 'u32'
    ├── eq (kind: TokenEq): '='
    ├── rhs (kind: TokenLiteralNumber): '5'
    ├── let_else_clause (kind: LetElseClause)
    │   ├── else_kw (kind: TokenElse): 'else'
    │   └── else_block (kind: ExprBlock)
    │       ├── lbrace (kind: TokenLBrace): '{'
    │       ├── statements (kind: StatementList)
    │       │   └── child #0 (kind: StatementReturn)
    │       │       ├── attributes (kind: AttributeList) []
    │       │       ├── return_kw (kind: TokenReturn): 'return'
    │       │       ├── expr_clause (kind: OptionExprClauseEmpty) []
    │       │       └── semicolon (kind: TokenSemicolon): ';'
    │       └── rbrace (kind: TokenRBrace): '}'
    └── semicolon (kind: TokenSemicolon): ';'

//! > ==========================================================================

//! > Test let-else with missing expression and pattern

//! > test_runner_name
test_partial_parser_tree(expect_diagnostics: true)

//! > cairo_code
fn f() {
    let  = else {
        return;
    };
}

//! > top_level_kind
StatementLet

//! > ignored_kinds

//! > expected_diagnostics
error[E1001]: Missing token '_'.
 --> dummy_file.cairo:2:8
    let  = else {
       ^

error[E1002]: Missing tokens. Expected an expression.
 --> dummy_file.cairo:2:11
    let  = else {
          ^

//! > expected_tree
└── Top level kind: StatementLet
    ├── attributes (kind: AttributeList) []
    ├── let_kw (kind: TokenLet): 'let'
    ├── pattern: Missing
    ├── type_clause (kind: OptionTypeClauseEmpty) []
    ├── eq (kind: TokenEq): '='
    ├── rhs: Missing []
    ├── let_else_clause (kind: LetElseClause)
    │   ├── else_kw (kind: TokenElse): 'else'
    │   └── else_block (kind: ExprBlock)
    │       ├── lbrace (kind: TokenLBrace): '{'
    │       ├── statements (kind: StatementList)
    │       │   └── child #0 (kind: StatementReturn)
    │       │       ├── attributes (kind: AttributeList) []
    │       │       ├── return_kw (kind: TokenReturn): 'return'
    │       │       ├── expr_clause (kind: OptionExprClauseEmpty) []
    │       │       └── semicolon (kind: TokenSemicolon): ';'
    │       └── rbrace (kind: TokenRBrace): '}'
    └── semicolon (kind: TokenSemicolon): ';'