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Add more support for evaluating object-like type and fix empty check in foreach

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This commit is contained in:
Matthew Brown 2016-09-21 16:42:39 -04:00
parent 93a5e6775d
commit 520ca5b559
4 changed files with 26 additions and 21 deletions
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4
src/Psalm/Checker/FunctionLikeChecker.php
View File

@ -613,6 +613,10 @@ abstract class FunctionLikeChecker implements StatementsSource
$type_match_found = true;
}
if ($param_type_part->isArray() && $input_type_part->isObjectLike()) {
$type_match_found = true;
}
if ($param_type_part->isScalar() && $input_type_part->isScalarType()) {
$type_match_found = true;
}

30
src/Psalm/Checker/StatementsChecker.php
View File

@ -1692,11 +1692,8 @@ class StatementsChecker
}
}
var_dump($item_value_type . ' ' . ($item_value_type->isSingle() ? ' yes': 'no'));
// if this array looks like an object-like array, let's return that instead
if ($item_value_type && !$item_value_type->isSingle() && $item_key_type && $item_key_type->hasString() && !$item_key_type->hasInt()) {
var_dump('creating object-like array for ' . $item_value_type);
$stmt->inferredType = new Type\Union([new Type\Atomic('object-like')]);
return;
}
@ -1829,7 +1826,7 @@ class StatementsChecker
if ($iterator_type) {
foreach ($iterator_type->types as $return_type) {
// if it's an empty array, we cannot iterate over it
if ((string) $return_type === 'array<empty, empty>') {
if ((string) $return_type === 'array<empty,empty>') {
continue;
}
@ -1945,6 +1942,11 @@ class StatementsChecker
continue;
}
if (!isset($foreach_context->vars_in_scope[$var])) {
unset($context->vars_in_scope[$var]);
continue;
}
if ($foreach_context->vars_in_scope[$var]->isMixed()) {
$context->vars_in_scope[$var] = $foreach_context->vars_in_scope[$var];
}
@ -2285,7 +2287,7 @@ class StatementsChecker
if (isset($stmt->var->inferredType)) {
$return_type = $stmt->var->inferredType;
if ($keyed_var_id) {
if ($keyed_array_var_id) {
// when we have a pattern like
// $a = [];
// $a['b']['c']['d'] = 1;
@ -2309,10 +2311,9 @@ class StatementsChecker
}
$stmt->inferredType = $assignment_value_type;
var_dump('checkArrayAssignment: setting ' . $keyed_array_var_id . ' to ' . $context->vars_in_scope[$keyed_array_var_id]);
}
elseif (!$nesting) {
if (!$nesting) {
$assignment_type = new Type\Union([
new Type\Generic(
'array',
@ -2331,8 +2332,6 @@ class StatementsChecker
}
$context->vars_in_scope[$var_id] = $assignment_type;
var_dump('checkArrayAssignment: setting ' . $var_id . ' to ' . $context->vars_in_scope[$var_id]);
}
}
else {
@ -2365,7 +2364,6 @@ class StatementsChecker
}
if ($type->value === 'string' && $assignment_value_type->hasString() && !$assignment_key_type->hasString()) {
var_dump((string)$assignment_key_type . $line_number);
return;
}
@ -3680,8 +3678,6 @@ class StatementsChecker
}
if ($array_assignment) {
var_dump('checkArrayAccess: in array assignment');
// if we're in an array assignment then we need to create some variables
// e.g.
// $a = [];
@ -3701,8 +3697,6 @@ class StatementsChecker
}
$stmt->inferredType = $keyed_assignment_type;
var_dump('checkArrayAccess: setting ' . $keyed_array_var_id . ' to ' . $context->vars_in_scope[$keyed_array_var_id]);
}
if ($array_var_id === $var_id) {
@ -3725,8 +3719,6 @@ class StatementsChecker
else {
$context->vars_in_scope[$var_id] = $assignment_type;
}
var_dump('checkArrayAccess: setting ' . $var_id . ' to ' . $context->vars_in_scope[$var_id]);
}
if ($type->type_params[$value_index]->isEmpty()) {
@ -3777,6 +3769,10 @@ class StatementsChecker
}
}
if ($keyed_array_var_id && isset($context->vars_in_scope[$keyed_array_var_id])) {
$stmt->inferredType = $context->vars_in_scope[$keyed_array_var_id];
}
if (!isset($stmt->inferredType)) {
$stmt->inferredType = Type::getMixed();
}

9
src/Psalm/Checker/TypeChecker.php
View File

@ -1049,10 +1049,11 @@ class TypeChecker
}
foreach ($simple_declared_types as $simple_declared_type) {
if ($simple_declared_type === 'mixed' ||
($simple_declared_type === 'object' && ClassLikeChecker::classOrInterfaceExists($differing_type)) ||
ClassChecker::classExtendsOrImplements($differing_type, $simple_declared_type) ||
(in_array($differing_type, ['float', 'int']) && in_array($simple_declared_type, ['float', 'int']))
if ($simple_declared_type === 'mixed'
|| ($simple_declared_type === 'object' && ClassLikeChecker::classOrInterfaceExists($differing_type))
|| ClassChecker::classExtendsOrImplements($differing_type, $simple_declared_type)
|| (in_array($differing_type, ['array', 'object-like']) && in_array($simple_declared_type, ['array', 'object-like']))
|| (in_array($differing_type, ['float', 'int']) && in_array($simple_declared_type, ['float', 'int']))
) {
$is_match = true;
break;

4
src/Psalm/Type/Atomic.php
View File

@ -39,6 +39,10 @@ class Atomic extends Type
return true;
}
if ($parent->hasType('array') && $this->isObjectLike()) {
return true;
}
if ($this->value === 'false' && $parent->hasType('bool')) {
// this is fine
return true;