Merge pull request #13 from php-etl/feature/transform-into-string

Added a new function to transform an integer into a string

Author: gplanchat

.github/workflows/phpstan-6.yaml

@@ -1,7 +1,7 @@
 name: PHPStan level 6
 on: push
 jobs:
-  phpstan:
+  phpstan6:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

.github/workflows/phpstan-7.yaml

@@ -1,7 +1,7 @@
 name: PHPStan level 7
 on: push
 jobs:
-  phpstan:
+  phpstan7:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

.github/workflows/phpstan-8.yaml

@@ -1,7 +1,7 @@
 name: PHPStan level 8
 on: push
 jobs:
-  phpstan:
+  phpstan8:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

src/AsFloat.php

@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Kiboko\Component\StringExpressionLanguage;
 
@@ -18,7 +20,7 @@ public function __construct($name)
     private function compile(string $value): string
     {
         return <<<PHP
-                ((float) $value)
+                ((float) {$value})
             PHP;
     }
 

src/AsInteger.php

@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Kiboko\Component\StringExpressionLanguage;
 
@@ -18,7 +20,7 @@ public function __construct($name)
     private function compile(string $value): string
     {
         return <<<PHP
-                ((int) $value)
+                ((int) {$value})
             PHP;
     }
 

src/AsString.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Kiboko\Component\StringExpressionLanguage;
+
+use Symfony\Component\ExpressionLanguage\ExpressionFunction;
+
+final class AsString extends ExpressionFunction
+{
+    public function __construct($name)
+    {
+        parent::__construct(
+            $name,
+            $this->compile(...)->bindTo($this),
+            $this->evaluate(...)->bindTo($this)
+        );
+    }
+
+    private function compile(string $value): string
+    {
+        return <<<PHP
+                ((string) {$value})
+            PHP;
+    }
+
+    private function evaluate(array $context, int|float|string $value): string
+    {
+        return (string) $value;
+    }
+}

src/ConvertCharCode.php

@@ -20,7 +20,7 @@ public function __construct($name)
     private function compile(string $text, string $sourceCharCode, string $destinationCharCode): string
     {
         return <<<"PHP"
-            iconv($sourceCharCode, $destinationCharCode, $text)
+            iconv({$sourceCharCode}, {$destinationCharCode}, {$text})
             PHP;
     }
 

src/StringExpressionLanguageProvider.php

@@ -35,6 +35,7 @@ public function getFunctions(): array
             new ConvertCharCode('convertCharCode'),
             new AsFloat('asFloat'),
             new AsInteger('asInteger'),
+            new AsString('asString'),
         ];
     }
 }