fix: fix get variable name in InterpolatedString. #12

Author: smeghead

CHANGELOG.md

@@ -5,6 +5,7 @@
  * Fixed command execution to properly return error codes when failures occur
  * Improved error handling in all command implementations
  * fix empty scope error. #11
+ * fix get variable name in InterpolatedString. ex: ${"Hello, {$name}!"} #12
 
 ## v0.0.4 (2025-03-20)
 

src/Parse/VariableParser.php

@@ -6,6 +6,7 @@
 
 use PhpParser\Node\Expr\Variable;
 use PhpParser\Node\FunctionLike;
+use PhpParser\Node\Scalar\InterpolatedString;
 use PhpParser\NodeFinder;
 use PhpParser\NodeTraverser;
 use PhpParser\NodeVisitor\NameResolver;
@@ -65,9 +66,23 @@ private function collectParseResultPerFunctionLike(array $functionLikes): array
             $variables = $this->nodeFinder->findInstanceOf($function, Variable::class);
             foreach ($variables as $variable) {
                 $assigned = $variable->getAttribute('assigned');
-                $func->addVariable(new VarReference($variable->name, $variable->getLine(), $assigned === true)); // @phpstan-ignore-line
+                $func->addVariable(new VarReference($this->getVariableName($variable), $variable->getLine(), $assigned === true)); // @phpstan-ignore-line
             }
             return $func;
         }, $functionLikes);
     }
+
+    private function getVariableName(Variable $variable): string
+    {
+        if ($variable->name instanceof InterpolatedString) {
+            $parts = $variable->name->parts;
+            return sprintf('${"%s"}', implode('', array_map(function($part){
+                if ($part instanceof Variable) {
+                    return sprintf('{$%s}', $part->name);
+                }
+                return $part->value;
+            }, $parts)));
+        }
+        return $variable->name;
+    }
 }

test/VariableParserTest.php

@@ -153,4 +153,29 @@ public function testParseAssignOperator(): void
         $this->assertSame(18, $vars[13]->lineNumber);
         $this->assertSame(true, $vars[13]->assigned);
     }
+
+    public function testInterpolatedStringFunction(): void
+    {
+        $parser = new VariableParser();
+        $content = file_get_contents($this->fixtureDir . '/interpolated_string.php');
+        $result = $parser->parse($content);
+
+        $this->assertInstanceOf(ParseResult::class, $result);
+        $functions = $result->functions;
+        $this->assertCount(1, $functions);
+        $this->assertSame('test', $functions[0]->name);
+        $this->assertSame(null, $functions[0]->namespace);
+        $this->assertCount(3, $functions[0]->getVariables());
+
+        $vars = $functions[0]->getVariables();
+        $this->assertSame('name', $vars[0]->name);
+        $this->assertSame(3, $vars[0]->lineNumber, 'first $name');
+        $this->assertSame(false, $vars[0]->assigned, 'first $name');
+        $this->assertSame('${"Hello, {$name}!"}', $vars[1]->name, '${"Hello, {$name}!');
+        $this->assertSame(5, $vars[1]->lineNumber, 'interpolated_string');
+        $this->assertSame(false, $vars[1]->assigned, 'interpolated_string not reference');
+        $this->assertSame('name', $vars[2]->name);
+        $this->assertSame(5, $vars[2]->lineNumber, 'second $name (10)');
+        $this->assertSame(false, $vars[2]->assigned, 'second $name (10) not reference');
+    }
 }

test/fixtures/interpolated_string.php

@@ -0,0 +1,6 @@
+<?php
+
+function test(string $name): string
+{
+    return ${"Hello, {$name}!"};
+}