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Recover from leading comma in tuple pat and expr

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This commit is contained in:
Lukas Wirth 2023-06-01 08:40:50 +02:00
parent 42450d2511
commit 7d1bf7023d
7 changed files with 89 additions and 4 deletions
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24
crates/parser/test_data/parser/inline/err/0019_tuple_expr_leading_comma.rast Normal file
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@ -0,0 +1,24 @@
SOURCE_FILE
FN
FN_KW "fn"
WHITESPACE " "
NAME
IDENT "foo"
PARAM_LIST
L_PAREN "("
R_PAREN ")"
WHITESPACE " "
BLOCK_EXPR
STMT_LIST
L_CURLY "{"
WHITESPACE "\n "
EXPR_STMT
TUPLE_EXPR
L_PAREN "("
COMMA ","
R_PAREN ")"
SEMICOLON ";"
WHITESPACE "\n"
R_CURLY "}"
WHITESPACE "\n"
error 17: expected expression

3
crates/parser/test_data/parser/inline/err/0019_tuple_expr_leading_comma.rs Normal file
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@ -0,0 +1,3 @@
fn foo() {
(,);
}

26
crates/parser/test_data/parser/inline/err/0020_tuple_pat_leading_comma.rast Normal file
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@ -0,0 +1,26 @@
SOURCE_FILE
FN
FN_KW "fn"
WHITESPACE " "
NAME
IDENT "foo"
PARAM_LIST
L_PAREN "("
R_PAREN ")"
WHITESPACE " "
BLOCK_EXPR
STMT_LIST
L_CURLY "{"
WHITESPACE "\n "
LET_STMT
LET_KW "let"
WHITESPACE " "
TUPLE_PAT
L_PAREN "("
COMMA ","
R_PAREN ")"
SEMICOLON ";"
WHITESPACE "\n"
R_CURLY "}"
WHITESPACE "\n"
error 21: expected pattern

3
crates/parser/test_data/parser/inline/err/0020_tuple_pat_leading_comma.rs Normal file
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@ -0,0 +1,3 @@
fn foo() {
let (,);
}