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[ruby/prism] Check whether the predicate is closed for conditionals

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https://github.com/ruby/prism/commit/bf43006d0a
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Haldun Bayhantopcu 2023-09-28 11:45:35 +02:00 committed by git
parent 7799fe90da
commit 834560a923
2 changed files with 13 additions and 12 deletions
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20
prism/prism.c
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@ -9843,12 +9843,10 @@ parse_arguments_list(pm_parser_t *parser, pm_arguments_t *arguments, bool accept
}
static inline pm_node_t *
parse_conditional(pm_parser_t *parser, pm_context_t context) {
pm_token_t keyword = parser->previous;
parse_predicate(pm_parser_t *parser, pm_binding_power_t binding_power, pm_context_t context) {
context_push(parser, PM_CONTEXT_PREDICATE);
pm_diagnostic_id_t error_id = context == PM_CONTEXT_IF ? PM_ERR_CONDITIONAL_IF_PREDICATE : PM_ERR_CONDITIONAL_UNLESS_PREDICATE;
pm_node_t *predicate = parse_expression(parser, PM_BINDING_POWER_MODIFIER, error_id);
pm_node_t *predicate = parse_expression(parser, binding_power, error_id);
// Predicates are closed by a term, a "then", or a term and then a "then".
bool predicate_closed = accept2(parser, PM_TOKEN_NEWLINE, PM_TOKEN_SEMICOLON);
@ -9858,6 +9856,13 @@ parse_conditional(pm_parser_t *parser, pm_context_t context) {
}
context_pop(parser);
return predicate;
}
static inline pm_node_t *
parse_conditional(pm_parser_t *parser, pm_context_t context) {
pm_token_t keyword = parser->previous;
pm_node_t *predicate = parse_predicate(parser, PM_BINDING_POWER_MODIFIER, context);
pm_statements_node_t *statements = NULL;
if (!match3(parser, PM_TOKEN_KEYWORD_ELSIF, PM_TOKEN_KEYWORD_ELSE, PM_TOKEN_KEYWORD_END)) {
@ -9889,12 +9894,7 @@ parse_conditional(pm_parser_t *parser, pm_context_t context) {
if (context == PM_CONTEXT_IF) {
while (accept1(parser, PM_TOKEN_KEYWORD_ELSIF)) {
pm_token_t elsif_keyword = parser->previous;
pm_node_t *predicate = parse_expression(parser, PM_BINDING_POWER_MODIFIER, PM_ERR_CONDITIONAL_ELSIF_PREDICATE);
// Predicates are closed by a term, a "then", or a term and then a "then".
accept2(parser, PM_TOKEN_NEWLINE, PM_TOKEN_SEMICOLON);
accept1(parser, PM_TOKEN_KEYWORD_THEN);
pm_node_t *predicate = parse_predicate(parser, PM_BINDING_POWER_MODIFIER, PM_CONTEXT_ELSIF);
pm_accepts_block_stack_push(parser, true);
pm_statements_node_t *statements = parse_statements(parser, PM_CONTEXT_ELSIF);
pm_accepts_block_stack_pop(parser);

5
test/prism/errors_test.rb
View File

@ -1317,10 +1317,11 @@ module Prism
end
def test_conditional_predicate_closed
source = "if 0 0; end\nunless 0 0; end"
source = "if 0 0; elsif 0 0; end\nunless 0 0; end"
assert_errors expression(source), source, [
["Expected `then` or `;` or '\n" + "'", 5..6],
["Expected `then` or `;` or '\n" + "'", 21..22],
["Expected `then` or `;` or '\n" + "'", 16..17],
["Expected `then` or `;` or '\n" + "'", 32..33],
]
end