Write a source map if DebugNames is enabled. #6

src/de/inetsoftware/jwebassembly/binary/BinaryModuleWriter.java

@@ -35,6 +35,7 @@ import de.inetsoftware.jwebassembly.module.ModuleWriter;
 import de.inetsoftware.jwebassembly.module.ValueTypeConvertion;
 import de.inetsoftware.jwebassembly.module.WasmTarget;
 import de.inetsoftware.jwebassembly.sourcemap.SourceMapWriter;
+import de.inetsoftware.jwebassembly.sourcemap.SourceMapping;
 import de.inetsoftware.jwebassembly.wasm.AnyType;
 import de.inetsoftware.jwebassembly.wasm.ArrayOperator;
 import de.inetsoftware.jwebassembly.wasm.NamedStorageType;
@@ -205,14 +206,21 @@ public class BinaryModuleWriter extends ModuleWriter implements InstructionOpcod
         if( size == 0 ) {
             return;
         }
-        SourceMapWriter sourceMap = new SourceMapWriter();
+        SourceMapWriter sourceMap = createSourceMap ? new SourceMapWriter() : null;
+
         WasmOutputStream stream = new WasmOutputStream();
         stream.writeVaruint32( size );
         for( Function func : functions.values() ) {
+            if( sourceMap != null && func.sourceMappings != null ) {
+                for( SourceMapping mapping : func.sourceMappings ) {
+                    mapping.addOffset( wasm.size() );
+                    sourceMap.addMapping( mapping );
+                }
+            }
             func.functionsStream.writeTo( stream );
         }
         wasm.writeSection( SectionType.Code, stream );
-        if( createSourceMap ) {
+        if( sourceMap != null ) {
             sourceMap.generate( target.getSourceMapOutput() );
         }
     }
@@ -412,9 +420,9 @@ public class BinaryModuleWriter extends ModuleWriter implements InstructionOpcod
      * {@inheritDoc}
      */
     @Override
-    protected void markCodePosition( int javaCodePosition ) {
+    protected void markSourceLine( int javaSourceLine ) {
         if( createSourceMap ) {
-            function.markCodePosition( codeStream.size(), javaCodePosition, javaSourceFile );
+            function.markCodePosition( codeStream.size(), javaSourceLine, javaSourceFile );
         }
     }
 

src/de/inetsoftware/jwebassembly/module/ModuleGenerator.java

@@ -109,7 +109,7 @@ public class ModuleGenerator {
                             ClassFile classFile = new ClassFile( new BufferedInputStream( Files.newInputStream( path ) ) );
                             prepare( classFile );
                         }
-                    };
+                    }
                 }
             } catch( Exception e ) {
                 e.printStackTrace();
@@ -370,7 +370,7 @@ public class ModuleGenerator {
         List<WasmInstruction> instructions = codeBuilder.getInstructions();
         optimizer.optimze( instructions );
 
-        int lastCodePosition = -1;
+        int lastJavaSourceLine = -1;
         for( WasmInstruction instruction : instructions ) {
             switch( instruction.getType() ) {
                 case Block:
@@ -390,10 +390,10 @@ public class ModuleGenerator {
                     break;
                 default:
             }
-            int codePosition = instruction.getCodePosition();
+            int javaSourceLine = instruction.getLineNumber();
-            if( codePosition >= 0 && codePosition != lastCodePosition ) {
+            if( javaSourceLine >= 0 && javaSourceLine != lastJavaSourceLine ) {
-                writer.markCodePosition( codePosition );
+                writer.markSourceLine( javaSourceLine );
-                lastCodePosition = codePosition;
+                lastJavaSourceLine = javaSourceLine;
             }
             instruction.writeTo( writer );
         }

src/de/inetsoftware/jwebassembly/module/ModuleWriter.java

@@ -131,10 +131,10 @@ public abstract class ModuleWriter implements Closeable {
     /**
      * Mark the current output position with Java code position for crating of a source map.
      * 
-     * @param javaCodePosition
+     * @param javaSourceLine
-     *            the position in the Java code
+     *            the line number in the Java code
      */
-    protected abstract void markCodePosition( int javaCodePosition );
+    protected abstract void markSourceLine( int javaSourceLine );
 
     /**
      * Complete the method

src/de/inetsoftware/jwebassembly/sourcemap/SourceMapping.java

@@ -19,11 +19,11 @@ package de.inetsoftware.jwebassembly.sourcemap;
  * Mapping for Source Map.
  */
 public class SourceMapping {
-    private final int    generatedColumn;
+    private int    generatedColumn;
 
-    private final int    sourceLine;
+    private int    sourceLine;
 
-    private final String sourceFileName;
+    private String sourceFileName;
 
     /**
      * Create a mapping between a Java code line and a WebAssembly code position
@@ -67,4 +67,12 @@ public class SourceMapping {
     String getSourceFileName() {
         return sourceFileName;
     }
+
+    /**
+     * Ad an offset to the generated column
+     * @param offset the offset
+     */
+    public void addOffset( int offset ) {
+        generatedColumn += offset;
+    }
 }

src/de/inetsoftware/jwebassembly/text/TextModuleWriter.java

@@ -202,7 +202,7 @@ public class TextModuleWriter extends ModuleWriter {
      * {@inheritDoc}
      */
     @Override
-    protected void markCodePosition( int javaCodePosition ) {
+    protected void markSourceLine( int javaSourceLine ) {
         // nothing
     }