1 files changed, 92 insertions, 0 deletions
diff --git a/engine/src/core/com/jme3/util/blockparser/BlockLanguageParser.java b/engine/src/core/com/jme3/util/blockparser/BlockLanguageParser.java
new file mode 100644
index 0000000..6dfa6b8
--- /dev/null
+++ b/engine/src/core/com/jme3/util/blockparser/BlockLanguageParser.java
@@ -0,0 +1,92 @@
+package com.jme3.util.blockparser;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.util.ArrayList;
+import java.util.List;
+
+public class BlockLanguageParser {
+    
+    private Reader reader;
+    private ArrayList<Statement> statementStack = new ArrayList<Statement>();
+    private Statement lastStatement;
+    private int lineNumber = 1;
+    
+    private BlockLanguageParser(){
+    }
+    
+    private void reset(){
+        statementStack.clear();
+        statementStack.add(new Statement(0, "<root>"));
+        lastStatement = null;
+        lineNumber = 1;
+    }
+    
+    private void pushStatement(StringBuilder buffer){
+        String content = buffer.toString().trim();
+        if (content.length() > 0){
+            // push last statement onto the list
+            lastStatement = new Statement(lineNumber, content);
+
+            Statement parent = statementStack.get(statementStack.size()-1);
+            parent.addStatement(lastStatement);
+
+            buffer.setLength(0);
+        }
+    }
+    
+    private void load(InputStream in) throws IOException{
+        reset();
+        
+        reader = new InputStreamReader(in);
+        
+        StringBuilder buffer = new StringBuilder();
+        boolean insideComment = false;
+        char lastChar = '\0';
+        
+        while (true){
+            int ci = reader.read();
+            char c = (char) ci;
+            if (c == '\r'){
+                continue;
+            }
+            if (insideComment && c == '\n'){
+                insideComment = false;
+            }else if (c == '/' && lastChar == '/'){
+                buffer.deleteCharAt(buffer.length()-1);
+                insideComment = true;
+                pushStatement(buffer);
+                lastChar = '\0';
+            }else if (!insideComment){
+                if (ci == -1 || c == '{' || c == '}' || c == '\n' || c == ';'){
+                    pushStatement(buffer);
+                    lastChar = '\0';
+                    if (c == '{'){
+                        // push last statement onto the stack
+                        statementStack.add(lastStatement);
+                        continue;
+                    }else if (c == '}'){
+                        // pop statement from stack
+                        statementStack.remove(statementStack.size()-1);
+                        continue;
+                    }else if (c == '\n'){
+                        lineNumber++;
+                    }else if (ci == -1){
+                        break;
+                    }
+                }else{
+                    buffer.append(c);
+                    lastChar = c;
+                }
+            }
+        }
+    }
+    
+    public static List<Statement> parse(InputStream in) throws IOException {
+        BlockLanguageParser parser = new BlockLanguageParser();
+        parser.load(in);
+        return parser.statementStack.get(0).getContents();
+    }
+}