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Add back support for unused method checks

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This commit is contained in:
Brown 2020-03-09 18:55:35 -04:00
parent a5672db9f9
commit 2a72990d62
2 changed files with 151 additions and 147 deletions
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296
src/Psalm/Internal/Analyzer/Statements/Expression/Call/MethodCallAnalyzer.php
View File

@ -1278,162 +1278,166 @@ class MethodCallAnalyzer extends \Psalm\Internal\Analyzer\Statements\Expression\
$returns_by_ref
|| $codebase->methods->getMethodReturnsByRef($method_id);
}
}
}
$method_storage = $codebase->methods->getUserMethodStorage($method_id);
try {
$method_storage = $codebase->methods->getStorage($declaring_method_id ?: $method_id);
} catch (\UnexpectedValueException $e) {
$method_storage = null;
}
if ($method_storage) {
if (!$context->collect_mutations && !$context->collect_initializations) {
$method_pure_compatible = $method_storage->external_mutation_free
&& $statements_analyzer->node_data->isPureCompatible($stmt->var);
if ($method_storage) {
if (!$context->collect_mutations && !$context->collect_initializations) {
$method_pure_compatible = $method_storage->external_mutation_free
&& $statements_analyzer->node_data->isPureCompatible($stmt->var);
if ($context->pure
&& !$method_storage->mutation_free
&& !$method_pure_compatible
) {
if (IssueBuffer::accepts(
new ImpureMethodCall(
'Cannot call an mutation-free method '
. $cased_method_id . ' from a pure context',
new CodeLocation($source, $stmt->name)
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} elseif ($context->mutation_free
&& !$method_storage->mutation_free
&& !$method_pure_compatible
) {
if (IssueBuffer::accepts(
new ImpureMethodCall(
'Cannot call an possibly-mutating method '
. $cased_method_id . ' from a mutation-free context',
new CodeLocation($source, $stmt->name)
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} elseif ($context->external_mutation_free
&& !$method_storage->mutation_free
&& $fq_class_name !== $context->self
&& !$method_pure_compatible
) {
if (IssueBuffer::accepts(
new ImpureMethodCall(
'Cannot call an possibly-mutating method '
. $cased_method_id . ' from a mutation-free context',
new CodeLocation($source, $stmt->name)
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} elseif (($method_storage->mutation_free
|| ($method_storage->external_mutation_free
&& (isset($stmt->var->external_mutation_free) || isset($stmt->var->pure))))
&& !$context->inside_unset
) {
if ($method_storage->mutation_free && !$method_storage->mutation_free_inferred) {
if ($context->inside_conditional) {
/** @psalm-suppress UndefinedPropertyAssignment */
$stmt->pure = true;
}
$can_memoize = true;
}
if ($codebase->find_unused_variables && !$context->inside_conditional) {
if (!$context->inside_assignment && !$context->inside_call) {
if (IssueBuffer::accepts(
new \Psalm\Issue\UnusedMethodCall(
'The call to ' . $cased_method_id . ' is not used',
new CodeLocation($statements_analyzer, $stmt->name),
(string) $method_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} elseif (!$method_storage->mutation_free_inferred) {
/** @psalm-suppress UndefinedPropertyAssignment */
$stmt->pure = true;
}
}
if ($context->pure
&& !$method_storage->mutation_free
&& !$method_pure_compatible
) {
if (IssueBuffer::accepts(
new ImpureMethodCall(
'Cannot call an mutation-free method '
. $cased_method_id . ' from a pure context',
new CodeLocation($source, $stmt->name)
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} elseif ($context->mutation_free
&& !$method_storage->mutation_free
&& !$method_pure_compatible
) {
if (IssueBuffer::accepts(
new ImpureMethodCall(
'Cannot call an possibly-mutating method '
. $cased_method_id . ' from a mutation-free context',
new CodeLocation($source, $stmt->name)
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} elseif ($context->external_mutation_free
&& !$method_storage->mutation_free
&& $fq_class_name !== $context->self
&& !$method_pure_compatible
) {
if (IssueBuffer::accepts(
new ImpureMethodCall(
'Cannot call an possibly-mutating method '
. $cased_method_id . ' from a mutation-free context',
new CodeLocation($source, $stmt->name)
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} elseif (($method_storage->mutation_free
|| ($method_storage->external_mutation_free
&& (isset($stmt->var->external_mutation_free) || isset($stmt->var->pure))))
&& !$context->inside_unset
) {
if ($method_storage->mutation_free && !$method_storage->mutation_free_inferred) {
if ($context->inside_conditional) {
/** @psalm-suppress UndefinedPropertyAssignment */
$stmt->pure = true;
}
if (!$config->remember_property_assignments_after_call
&& !$method_storage->mutation_free
&& !$method_pure_compatible
) {
$context->removeAllObjectVars();
} elseif ($method_storage->this_property_mutations) {
foreach ($method_storage->this_property_mutations as $name => $_) {
$mutation_var_id = $lhs_var_id . '->' . $name;
$can_memoize = true;
}
$this_property_didnt_exist = $lhs_var_id === '$this'
&& isset($context->vars_in_scope[$mutation_var_id])
&& !isset($class_storage->declaring_property_ids[$name]);
$context->remove($mutation_var_id);
if ($this_property_didnt_exist) {
$context->vars_in_scope[$mutation_var_id] = Type::getMixed();
}
if ($codebase->find_unused_variables && !$context->inside_conditional) {
if (!$context->inside_assignment && !$context->inside_call) {
if (IssueBuffer::accepts(
new \Psalm\Issue\UnusedMethodCall(
'The call to ' . $cased_method_id . ' is not used',
new CodeLocation($statements_analyzer, $stmt->name),
(string) $method_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} elseif (!$method_storage->mutation_free_inferred) {
/** @psalm-suppress UndefinedPropertyAssignment */
$stmt->pure = true;
}
}
$class_template_params = $template_result->generic_params;
if ($method_storage->assertions) {
self::applyAssertionsToContext(
$stmt->name,
ExpressionAnalyzer::getArrayVarId($stmt->var, null, $statements_analyzer),
$method_storage->assertions,
$args,
$class_template_params,
$context,
$statements_analyzer
);
}
if ($method_storage->if_true_assertions) {
$statements_analyzer->node_data->setIfTrueAssertions(
$stmt,
array_map(
function (Assertion $assertion) use (
$class_template_params,
$lhs_var_id
) : Assertion {
return $assertion->getUntemplatedCopy(
$class_template_params ?: [],
$lhs_var_id
);
},
$method_storage->if_true_assertions
)
);
}
if ($method_storage->if_false_assertions) {
$statements_analyzer->node_data->setIfFalseAssertions(
$stmt,
array_map(
function (Assertion $assertion) use (
$class_template_params,
$lhs_var_id
) : Assertion {
return $assertion->getUntemplatedCopy(
$class_template_params ?: [],
$lhs_var_id
);
},
$method_storage->if_false_assertions
)
);
}
}
if (!$config->remember_property_assignments_after_call
&& !$method_storage->mutation_free
&& !$method_pure_compatible
) {
$context->removeAllObjectVars();
} elseif ($method_storage->this_property_mutations) {
foreach ($method_storage->this_property_mutations as $name => $_) {
$mutation_var_id = $lhs_var_id . '->' . $name;
$this_property_didnt_exist = $lhs_var_id === '$this'
&& isset($context->vars_in_scope[$mutation_var_id])
&& !isset($class_storage->declaring_property_ids[$name]);
$context->remove($mutation_var_id);
if ($this_property_didnt_exist) {
$context->vars_in_scope[$mutation_var_id] = Type::getMixed();
}
}
}
}
$class_template_params = $template_result->generic_params;
if ($method_storage->assertions) {
self::applyAssertionsToContext(
$stmt->name,
ExpressionAnalyzer::getArrayVarId($stmt->var, null, $statements_analyzer),
$method_storage->assertions,
$args,
$class_template_params,
$context,
$statements_analyzer
);
}
if ($method_storage->if_true_assertions) {
$statements_analyzer->node_data->setIfTrueAssertions(
$stmt,
array_map(
function (Assertion $assertion) use (
$class_template_params,
$lhs_var_id
) : Assertion {
return $assertion->getUntemplatedCopy(
$class_template_params ?: [],
$lhs_var_id
);
},
$method_storage->if_true_assertions
)
);
}
if ($method_storage->if_false_assertions) {
$statements_analyzer->node_data->setIfFalseAssertions(
$stmt,
array_map(
function (Assertion $assertion) use (
$class_template_params,
$lhs_var_id
) : Assertion {
return $assertion->getUntemplatedCopy(
$class_template_params ?: [],
$lhs_var_id
);
},
$method_storage->if_false_assertions
)
);
}
}

2
tests/UnusedCodeTest.php
View File

@ -948,7 +948,7 @@ class UnusedCodeTest extends TestCase
$a->getShort();',
'error_message' => 'UnusedMethodCall',
],
'SKIPPED-dateTimeImmutable' => [
'dateTimeImmutable' => [
'<?php
function foo(DateTimeImmutable $dt) : void {
$dt->modify("+1 day");