feat(muscript): prepare for extractSideEffects

muscript-ast/src/main/java/io/gitlab/jfronny/muscript/ast/extensible/ExtensibleBoolExpr.java

@@ -1,10 +1,18 @@
 package io.gitlab.jfronny.muscript.ast.extensible;
 
 import io.gitlab.jfronny.muscript.ast.BoolExpr;
+import io.gitlab.jfronny.muscript.ast.Expr;
+
+import java.util.stream.Stream;
 
 public non-sealed interface ExtensibleBoolExpr extends BoolExpr, ExtensibleExpr {
     @Override
     default BoolExpr optimize() {
         return this;
     }
+
+    @Override
+    default Stream<Expr> extractSideEffects() {
+        return Stream.of(this);
+    }
 }

muscript-ast/src/main/java/io/gitlab/jfronny/muscript/ast/extensible/ExtensibleDynamicExpr.java

@@ -1,10 +1,18 @@
 package io.gitlab.jfronny.muscript.ast.extensible;
 
 import io.gitlab.jfronny.muscript.ast.DynamicExpr;
+import io.gitlab.jfronny.muscript.ast.Expr;
+
+import java.util.stream.Stream;
 
 public non-sealed interface ExtensibleDynamicExpr extends DynamicExpr, ExtensibleExpr {
     @Override
     default DynamicExpr optimize() {
         return this;
     }
+
+    @Override
+    default Stream<Expr> extractSideEffects() {
+        return Stream.of(this);
+    }
 }

muscript-ast/src/main/java/io/gitlab/jfronny/muscript/ast/extensible/ExtensibleExpr.java

@@ -3,7 +3,10 @@ package io.gitlab.jfronny.muscript.ast.extensible;
 import io.gitlab.jfronny.muscript.ast.Expr;
 import io.gitlab.jfronny.muscript.core.ExprWriter;
 
+import java.util.stream.Stream;
+
 public sealed interface ExtensibleExpr permits ExtensibleBoolExpr, ExtensibleDynamicExpr, ExtensibleNumberExpr, ExtensibleStringExpr {
     void decompile(ExprWriter writer);
     Expr optimize();
+    Stream<Expr> extractSideEffects();
 }

muscript-ast/src/main/java/io/gitlab/jfronny/muscript/ast/extensible/ExtensibleNumberExpr.java

@@ -1,10 +1,18 @@
 package io.gitlab.jfronny.muscript.ast.extensible;
 
+import io.gitlab.jfronny.muscript.ast.Expr;
 import io.gitlab.jfronny.muscript.ast.NumberExpr;
 
+import java.util.stream.Stream;
+
 public non-sealed interface ExtensibleNumberExpr extends NumberExpr, ExtensibleExpr {
     @Override
     default NumberExpr optimize() {
         return this;
     }
+
+    @Override
+    default Stream<Expr> extractSideEffects() {
+        return Stream.of(this);
+    }
 }

muscript-ast/src/main/java/io/gitlab/jfronny/muscript/ast/extensible/ExtensibleStringExpr.java

@@ -1,10 +1,18 @@
 package io.gitlab.jfronny.muscript.ast.extensible;
 
+import io.gitlab.jfronny.muscript.ast.Expr;
 import io.gitlab.jfronny.muscript.ast.StringExpr;
 
+import java.util.stream.Stream;
+
 public non-sealed interface ExtensibleStringExpr extends StringExpr, ExtensibleExpr {
     @Override
     default StringExpr optimize() {
         return this;
     }
+
+    @Override
+    default Stream<Expr> extractSideEffects() {
+        return Stream.of(this);
+    }
 }