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SOURCE_FILE
FN
COMMENT "// 2015"
WHITESPACE "\n"
FN_KW "fn"
WHITESPACE " "
NAME
IDENT "foo"
PARAM_LIST
L_PAREN "("
R_PAREN ")"
WHITESPACE " "
BLOCK_EXPR
STMT_LIST
L_CURLY "{"
WHITESPACE " "
EXPR_STMT
MACRO_EXPR
MACRO_CALL
PATH
PATH_SEGMENT
NAME_REF
IDENT "try"
BANG "!"
TOKEN_TREE
L_PAREN "("
IDENT "Ok"
TOKEN_TREE
L_PAREN "("
TOKEN_TREE
L_PAREN "("
R_PAREN ")"
R_PAREN ")"
R_PAREN ")"
SEMICOLON ";"
WHITESPACE " "
R_CURLY "}"
WHITESPACE "\n"