Add progress for scanning stage

src/Psalm/Internal/Codebase/Scanner.php

@@ -317,6 +317,7 @@ final class Scanner
             $pool_size = 1;
         }
 
+        $this->progress->expand(count($files_to_scan));
         if ($pool_size > 1) {
             $process_file_paths = [];
 
@@ -355,7 +356,6 @@ final class Scanner
                  */
                 function () {
                     $this->progress->debug('Collecting data from forked scanner process' . PHP_EOL);
-
                     $project_analyzer = ProjectAnalyzer::getInstance();
                     $codebase = $project_analyzer->getCodebase();
                     $statements_provider = $codebase->statements_provider;
@@ -377,6 +377,9 @@ final class Scanner
                         'taint_data' => $codebase->taint_flow_graph,
                     ];
                 },
+                function (): void {
+                    $this->progress->taskDone(0);
+                },
             );
 
             // Wait for all tasks to complete and collect the results.
@@ -427,6 +430,7 @@ final class Scanner
             $i = 0;
 
             foreach ($files_to_scan as $file_path => $_) {
+                $this->progress->taskDone(0);
                 $this->scanAPath($i, $file_path);
                 ++$i;
             }

src/Psalm/Progress/DefaultProgress.php

@@ -22,7 +22,7 @@ class DefaultProgress extends LongProgress
 
     public function taskDone(int $level): void
     {
-        if ($this->number_of_tasks > self::TOO_MANY_FILES) {
+        if ($this->fixed_size && $this->number_of_tasks > self::TOO_MANY_FILES) {
             ++$this->progress;
 
             // Source for rate limiting:

src/Psalm/Progress/LongProgress.php

@@ -25,6 +25,8 @@ class LongProgress extends Progress
 
     protected bool $print_infos = false;
 
+    protected bool $fixed_size = true;
+
     public function __construct(bool $print_errors = true, bool $print_infos = true)
     {
         $this->print_errors = $print_errors;
@@ -33,16 +35,19 @@ class LongProgress extends Progress
 
     public function startScanningFiles(): void
     {
+        $this->fixed_size = false;
         $this->write('Scanning files...' . "\n");
     }
 
     public function startAnalyzingFiles(): void
     {
-        $this->write('Analyzing files...' . "\n\n");
+        $this->fixed_size = true;
+        $this->write("\n" . 'Analyzing files...' . "\n\n");
     }
 
     public function startAlteringFiles(): void
     {
+        $this->fixed_size = true;
         $this->write('Altering files...' . "\n");
     }
 
@@ -57,8 +62,30 @@ class LongProgress extends Progress
         $this->progress = 0;
     }
 
+    public function expand(int $number_of_tasks): void
+    {
+        $this->number_of_tasks += $number_of_tasks;
+    }
+
     public function taskDone(int $level): void
     {
+        if ($this->number_of_tasks === null) {
+            throw new LogicException('Progress::start() should be called before Progress::taskDone()');
+        }
+
+        ++$this->progress;
+
+        if (!$this->fixed_size) {
+            if ($this->progress == 1 || $this->progress == $this->number_of_tasks || $this->progress % 10 == 0) {
+                $this->write(sprintf(
+                    "\r%s / %s?",
+                    $this->progress,
+                    $this->number_of_tasks,
+                ));
+            }
+            return;
+        }
+
         if ($level === 0 || ($level === 1 && !$this->print_infos) || !$this->print_errors) {
             $this->write(self::doesTerminalSupportUtf8() ? '░' : '_');
         } elseif ($level === 1) {
@@ -67,7 +94,6 @@ class LongProgress extends Progress
             $this->write('E');
         }
 
-        ++$this->progress;
 
         if (($this->progress % self::NUMBER_OF_COLUMNS) !== 0) {
             return;

src/Psalm/Progress/Progress.php

@@ -46,6 +46,10 @@ abstract class Progress
     {
     }
 
+    public function expand(int $number_of_tasks): void
+    {
+    }
+
     public function taskDone(int $level): void
     {
     }