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SOURCE_FILE
FN
FN_KW "fn"
WHITESPACE " "
NAME
IDENT "foo"
PARAM_LIST
L_PAREN "("
R_PAREN ")"
WHITESPACE " "
BLOCK_EXPR
STMT_LIST
L_CURLY "{"
WHITESPACE " "
CLOSURE_EXPR
PARAM_LIST
PIPE "|"
PIPE "|"
WHITESPACE " "
RET_TYPE
THIN_ARROW "->"
WHITESPACE " "
PATH_TYPE
PATH
PATH_SEGMENT
NAME_REF
IDENT "A"
ERROR
R_ANGLE ">"
WHITESPACE " "
BLOCK_EXPR
STMT_LIST
L_CURLY "{"
WHITESPACE " "
LET_STMT
LET_KW "let"
WHITESPACE " "
IDENT_PAT
NAME
IDENT "x"
WHITESPACE " "
EQ "="
WHITESPACE " "
LITERAL
INT_NUMBER "1"
SEMICOLON ";"
WHITESPACE " "
R_CURLY "}"
WHITESPACE " "
R_CURLY "}"
WHITESPACE "\n"
error 18: expected a curly brace