Load structure scripts into registry

common/src/main/java/com/dfsek/terra/api/structures/parser/Parser.java

@@ -50,6 +50,7 @@ import java.util.Map;
 public class Parser {
     private final String data;
     private final Map<String, FunctionBuilder<? extends Function<?>>> functions = new HashMap<>();
+    private String id;
 
     public Parser(String data) {
         this.data = data;
@@ -60,6 +61,10 @@ public class Parser {
         return this;
     }
 
+    public String getID() {
+        return id;
+    }
+
     /**
      * Parse input
      *
@@ -75,6 +80,14 @@ public class Parser {
         } catch(TokenizerException e) {
             throw new ParseException("Failed to tokenize input", e);
         }
+
+        // Parse ID
+        ParserUtil.checkType(tokens.remove(0), Token.Type.ID); // First token must be ID
+        Token idToken = tokens.get(0);
+        ParserUtil.checkType(tokens.remove(0), Token.Type.STRING); // Second token must be string literal containing ID
+        ParserUtil.checkType(tokens.remove(0), Token.Type.STATEMENT_END);
+        this.id = idToken.getContent();
+
         // Check for dangling brackets
         int blockLevel = 0;
         for(Token t : tokens) {

common/src/main/java/com/dfsek/terra/api/structures/script/StructureScript.java

@@ -1,4 +1,50 @@
 package com.dfsek.terra.api.structures.script;
 
+import com.dfsek.terra.api.math.vector.Location;
+import com.dfsek.terra.api.platform.TerraPlugin;
+import com.dfsek.terra.api.platform.world.Chunk;
+import com.dfsek.terra.api.structures.parser.Parser;
+import com.dfsek.terra.api.structures.parser.exceptions.ParseException;
+import com.dfsek.terra.api.structures.parser.lang.Block;
+import com.dfsek.terra.api.structures.script.builders.BlockFunctionBuilder;
+import com.dfsek.terra.api.structures.script.builders.CheckFunctionBuilder;
+import com.dfsek.terra.api.structures.structure.Rotation;
+import org.apache.commons.io.IOUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+
 public class StructureScript {
+    private final Block block;
+    private final String id;
+
+    public StructureScript(InputStream inputStream, TerraPlugin main) {
+        Parser parser;
+        try {
+            parser = new Parser(IOUtils.toString(inputStream));
+        } catch(IOException e) {
+            throw new RuntimeException(e);
+        }
+        parser.addFunction("block", new BlockFunctionBuilder(main))
+                .addFunction("check", new CheckFunctionBuilder(main));
+
+        try {
+            block = parser.parse();
+        } catch(ParseException e) {
+            throw new RuntimeException(e);
+        }
+        this.id = parser.getID();
+    }
+
+    public void execute(Location location, Rotation rotation) {
+        block.apply(location, rotation);
+    }
+
+    public void execute(Location location, Chunk chunk, Rotation rotation) {
+        block.apply(location, chunk, rotation);
+    }
+
+    public String getId() {
+        return id;
+    }
 }

common/src/main/java/com/dfsek/terra/api/structures/tokenizer/Token.java

@@ -206,6 +206,10 @@ public class Token {
         /**
          * Break statement
          */
-        BREAK
+        BREAK,
+        /**
+         * ID declaration
+         */
+        ID
     }
 }

common/src/main/java/com/dfsek/terra/api/structures/tokenizer/Tokenizer.java

@@ -141,6 +141,9 @@ public class Tokenizer {
         if(tokenString.equals("break"))
             return new Token(tokenString, Token.Type.BREAK, new Position(reader.getLine(), reader.getIndex()));
 
+        if(tokenString.equals("id"))
+            return new Token(tokenString, Token.Type.ID, new Position(reader.getLine(), reader.getIndex()));
+
         return new Token(tokenString, Token.Type.IDENTIFIER, new Position(reader.getLine(), reader.getIndex()));
     }