feat: AssignOp has been added to the assignment decision in addition …

CHANGELOG.md

@@ -3,6 +3,7 @@
 ### Features
 
  * The base of deviation of local variable abuse has been changed from the average number of rows to the first number of rows.
+ * AssignOp has been added to the assignment decision in addition to Assign.
 
 
 ## v0.0.2 (2025-03-19)

src/Parse/Visitor/FunctionLikeFindingVisitor.php

@@ -6,6 +6,7 @@
 
 use PhpParser\Node;
 use PhpParser\Node\Expr\Assign;
+use PhpParser\Node\Expr\AssignOp;
 use PhpParser\Node\FunctionLike;
 use PhpParser\NodeVisitor\FindingVisitor;
 use PhpParser\Node\Stmt\Class_;
@@ -31,7 +32,7 @@ public function enterNode(Node $node) {
             $this->currentNamespace = $node->name ? $node->name->name : null;
         }
 
-        if ($node instanceof Assign) {
+        if ($node instanceof Assign || $node instanceof AssignOp) {
             $node->var->setAttribute('assigned', true); // Mark as assigned
         }
         if ($node instanceof FunctionLike) {

test/VariableParserTest.php

@@ -97,4 +97,60 @@ public function testParseNamespace(): void
         $this->assertCount(0, $functions[1]->getVariables());
     }
 
+    public function testParseAssignOperator(): void
+    {
+        $parser = new VariableParser();
+        $content = file_get_contents($this->fixtureDir . '/assign_operator.php');
+        $result = $parser->parse($content);
+
+        $this->assertInstanceOf(ParseResult::class, $result);
+        $functions = $result->functions;
+        $this->assertCount(1, $functions);
+        $this->assertSame('assignFunction', $functions[0]->name);
+        $this->assertCount(14, $functions[0]->getVariables());
+
+        $vars = $functions[0]->getVariables();
+        $this->assertSame('num', $vars[0]->name);
+        $this->assertSame(5, $vars[0]->lineNumber);
+        $this->assertSame(true, $vars[0]->assigned, '$num = 1;');
+        $this->assertSame('num', $vars[1]->name);
+        $this->assertSame(6, $vars[1]->lineNumber);
+        $this->assertSame(true, $vars[1]->assigned, '$num += 1;');
+        $this->assertSame('num', $vars[2]->name);
+        $this->assertSame(7, $vars[2]->lineNumber);
+        $this->assertSame(true, $vars[2]->assigned, '$num -= 1;');
+        $this->assertSame('num', $vars[3]->name);
+        $this->assertSame(8, $vars[3]->lineNumber);
+        $this->assertSame(true, $vars[3]->assigned, '$num *= 1;');
+        $this->assertSame('num', $vars[4]->name);
+        $this->assertSame(9, $vars[4]->lineNumber);
+        $this->assertSame(true, $vars[4]->assigned);
+        $this->assertSame('num', $vars[5]->name);
+        $this->assertSame(10, $vars[5]->lineNumber);
+        $this->assertSame(true, $vars[5]->assigned);
+        $this->assertSame('num', $vars[6]->name);
+        $this->assertSame(11, $vars[6]->lineNumber);
+        $this->assertSame(true, $vars[6]->assigned);
+        $this->assertSame('num', $vars[7]->name);
+        $this->assertSame(12, $vars[7]->lineNumber);
+        $this->assertSame(true, $vars[7]->assigned);
+        $this->assertSame('num', $vars[8]->name);
+        $this->assertSame(13, $vars[8]->lineNumber);
+        $this->assertSame(true, $vars[8]->assigned);
+        $this->assertSame('num', $vars[9]->name);
+        $this->assertSame(14, $vars[9]->lineNumber);
+        $this->assertSame(true, $vars[9]->assigned);
+        $this->assertSame('num', $vars[10]->name);
+        $this->assertSame(15, $vars[10]->lineNumber);
+        $this->assertSame(true, $vars[10]->assigned);
+        $this->assertSame('num', $vars[11]->name);
+        $this->assertSame(16, $vars[11]->lineNumber);
+        $this->assertSame(true, $vars[11]->assigned);
+        $this->assertSame('num', $vars[12]->name);
+        $this->assertSame(17, $vars[12]->lineNumber);
+        $this->assertSame(true, $vars[12]->assigned);
+        $this->assertSame('num', $vars[13]->name);
+        $this->assertSame(18, $vars[13]->lineNumber);
+        $this->assertSame(true, $vars[13]->assigned);
+    }
 }

test/fixtures/assign_operator.php

@@ -0,0 +1,19 @@
+<?php
+
+function assignFunction(): void
+{
+    $num = 1; // 5行目
+    $num += 1; // 6行目
+    $num -= 1; // 7行目
+    $num *= 1; // 8行目
+    $num /= 1; // 9行目
+    $num %= 1; // 10行目
+    $num **= 1; // 11行目
+    $num &= 1; // 12行目
+    $num |= 1; // 13行目
+    $num ^= 1; // 14行目
+    $num <<= 1; // 15行目
+    $num >>= 1; // 16行目
+    $num .= 1; // 17行目
+    $num ??= 1; // 18行目
+}