Added a statement to check if an API is present in configs

src/net/bdew/lib/recipes/DataClasses.scala

@@ -125,6 +125,16 @@ case class StClassMacro(id: String, cls: String) extends DelayedStatement
  */
 case class StIfHaveMod(mod: String, thn: List[Statement], els: List[Statement]) extends Statement
 
+/**
+ * Conditional block - checks if api is loaded
+ * Syntax: ifAPI {string} { {statements} } [else { {statements} }]
+ * Parser: [[net.bdew.lib.recipes.RecipeParser.ifApi]]
+ * @param mod API modid
+ * @param thn Statements to run if present
+ * @param els Statements to run otherwise
+ */
+case class StIfHaveAPI(mod: String, thn: List[Statement], els: List[Statement]) extends Statement
+
 /**
  * Conditional block - checks if mod is loaded
  * Can contain only delayed statements

src/net/bdew/lib/recipes/RecipeLoader.scala

@@ -11,6 +11,7 @@ package net.bdew.lib.recipes
 
 import java.io.Reader
 
+import cpw.mods.fml.common.ModAPIManager
 import cpw.mods.fml.common.registry.GameRegistry
 import net.bdew.lib.{BdLib, Misc}
 import net.minecraft.block.Block
@@ -220,6 +221,15 @@ class RecipeLoader {
         processStatementsSafe(els)
       }
 
+    case StIfHaveAPI(mod, thn, els) =>
+      if (ModAPIManager.INSTANCE.hasAPI(mod)) {
+        BdLib.logInfo("ifAPI: %s found", mod)
+        processStatementsSafe(thn)
+      } else {
+        BdLib.logInfo("ifAPI: %s not found", mod)
+        processStatementsSafe(els)
+      }
+
     case StClearRecipes(res) =>
       BdLib.logInfo("Clearing recipes that produce %s", res)
       delayedStatements = delayedStatements.filter({

src/net/bdew/lib/recipes/RecipeParser.scala

@@ -82,6 +82,10 @@ class RecipeParser extends JavaTokenParsers {
     case mod ~ thn ~ els => new StIfHaveMod(mod, thn, els.getOrElse(List.empty[Statement]))
   }
 
+  def ifAPI = ("ifAPI" ~> str) ~ ("{" ~> statements <~ "}") ~ ("else" ~> "{" ~> statements <~ "}").? ^^ {
+    case mod ~ thn ~ els => new StIfHaveAPI(mod, thn, els.getOrElse(List.empty[Statement]))
+  }
+
   def ifOreDict = ("ifOreDict" ~> str) ~ ("{" ~> delayedStatements <~ "}") ~ ("else" ~> "{" ~> delayedStatements <~ "}").? ^^ {
     case id ~ thn ~ els => new StIfHaveOD(id, thn, els.getOrElse(List.empty[DelayedStatement]))
   }
@@ -119,7 +123,7 @@ class RecipeParser extends JavaTokenParsers {
       | recipeSmelting
     )
 
-  def statement: Parser[Statement] = delayedStatement | ifMod | clearRecipes
+  def statement: Parser[Statement] = delayedStatement | ifMod | ifAPI | clearRecipes
 
   def statements = statement.*
   def delayedStatements = delayedStatement.*