2 files changed, 47 insertions, 0 deletions
diff --git a/crates/shirabe-php-shim/src/lib.rs b/crates/shirabe-php-shim/src/lib.rs
index ff9909d..42fb281 100644
--- a/crates/shirabe-php-shim/src/lib.rs
+++ b/crates/shirabe-php-shim/src/lib.rs
@@ -35,6 +35,10 @@ pub struct InvalidArgumentException {
     pub code: i64,
 }
 
+pub fn get_debug_type(value: &PhpMixed) -> String {
+    todo!()
+}
+
 pub fn hash(algo: &str, data: &str) -> String {
     todo!()
 }
diff --git a/crates/shirabe/src/filter/platform_requirement_filter/platform_requirement_filter_factory.rs b/crates/shirabe/src/filter/platform_requirement_filter/platform_requirement_filter_factory.rs
index 4df8cde..8dda266 100644
--- a/crates/shirabe/src/filter/platform_requirement_filter/platform_requirement_filter_factory.rs
+++ b/crates/shirabe/src/filter/platform_requirement_filter/platform_requirement_filter_factory.rs
@@ -1 +1,44 @@
 //! ref: composer/src/Composer/Filter/PlatformRequirementFilter/PlatformRequirementFilterFactory.php
+
+use anyhow::Result;
+use shirabe_php_shim::{InvalidArgumentException, PhpMixed};
+use crate::filter::platform_requirement_filter::{
+    ignore_all_platform_requirement_filter::IgnoreAllPlatformRequirementFilter,
+    ignore_list_platform_requirement_filter::IgnoreListPlatformRequirementFilter,
+    ignore_nothing_platform_requirement_filter::IgnoreNothingPlatformRequirementFilter,
+    platform_requirement_filter_interface::PlatformRequirementFilterInterface,
+};
+
+pub struct PlatformRequirementFilterFactory;
+
+impl PlatformRequirementFilterFactory {
+    pub fn from_bool_or_list(bool_or_list: PhpMixed) -> Result<Box<dyn PlatformRequirementFilterInterface>> {
+        match bool_or_list {
+            PhpMixed::Bool(b) => {
+                if b {
+                    Ok(Self::ignore_all())
+                } else {
+                    Ok(Self::ignore_nothing())
+                }
+            }
+            list_or_array @ (PhpMixed::List(_) | PhpMixed::Array(_)) => {
+                Ok(Box::new(IgnoreListPlatformRequirementFilter::new(list_or_array)))
+            }
+            other => Err(anyhow::anyhow!(InvalidArgumentException {
+                message: format!(
+                    "PlatformRequirementFilter: Unknown $boolOrList parameter {}. Please report at https://github.com/composer/composer/issues/new.",
+                    shirabe_php_shim::get_debug_type(&other)
+                ),
+                code: 0,
+            })),
+        }
+    }
+
+    pub fn ignore_all() -> Box<dyn PlatformRequirementFilterInterface> {
+        Box::new(IgnoreAllPlatformRequirementFilter)
+    }
+
+    pub fn ignore_nothing() -> Box<dyn PlatformRequirementFilterInterface> {
+        Box::new(IgnoreNothingPlatformRequirementFilter)
+    }
+}