- First commit of first draft

src/Compiler.php

@@ -0,0 +1,84 @@
+<?php declare(strict_types=1);
+
+namespace Picea;
+
+class Compiler
+{
+    protected string $sourceCode = "";
+
+    protected array $syntaxObjectList = [];
+
+    protected array $tagList = [];
+
+    protected string $tagTokenOpen = "\{%";
+
+    protected string $tagTokenClose = "%\}";
+
+    protected array $extensionList = [];
+
+    public function compile(Compiler\Context $context) : string
+    {
+        $context->compiler = $this;
+
+        /**
+         * Syntaxes such as {{ echo }} & {{= echo raw }} && {# comment #}
+         */
+        foreach($this->syntaxObjectList as $syntax) {
+            $syntax->parse($context, $this->sourceCode);
+        }
+
+        /**
+         * Control structures & functions {% functionName arguments %}
+         */
+        $replace = "#({$this->tagTokenOpen})(.*?)({$this->tagTokenClose})#s";
+
+        $this->sourceCode = preg_replace_callback($replace, function ($matches) use (&$context) {
+            $matches[2] = trim($matches[2]);
+
+            list($token, $arguments) = array_pad(array_filter(explode(' ', $matches[2], 2), 'strlen'), 2, null);
+
+            # @TODO Refractor this parts to allows registration to the tag's name
+            if ( $this->tagList[$token] ?? false ) {
+                return $this->tagList[$token]->parse($context, $arguments);
+            }
+            elseif ( $this->extensionList[$token] ?? false ) {
+                return $this->extensionList[$token]->parse($context, $arguments);
+            }
+            else {
+                throw new \LogicException("Impossible to find token `$token` declared in `{$matches[2]}`. Perhapse you forgot to add a custom token to Picea's engine ?");
+            }
+
+        }, $this->sourceCode);
+
+        return $this->sourceCode;
+    }
+    
+    public function loadSourceCode($html) : self
+    {
+        $this->sourceCode = $html;
+        return $this;
+    }
+
+    public function registerExtension(Extension\Extension $extension) : self
+    {
+        $this->extensionList[$extension->token] = $extension;
+        return $this;
+    }
+
+    public function registerCaching(CachingStrategy $cachingStrategy) : self
+    {
+    	return $this;
+    }
+
+    public function registerSyntax(Syntax\Syntax $syntaxObject) : self
+    {
+        $this->syntaxObjectList[] = $syntaxObject;
+        return $this;
+    }
+
+    public function registerControlStructure(ControlStructure\ControlStructure $controlStructureObject) : self
+    {
+        $this->tagList[$controlStructureObject->token] = $controlStructureObject;
+        return $this;
+    }
+}