SCL compiler generates line numbers to bytecode

[simantics/platform.git] / bundles / org.simantics.scl.compiler / src / org / simantics / scl / compiler / internal / parsing / utils / LineLocator.java

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/parsing/utils/LineLocator.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/parsing/utils/LineLocator.java
new file mode 100644 (file)
index 0000000..f447451
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/parsing/utils/LineLocator.java
@@ -0,0 +1,15 @@
+package org.simantics.scl.compiler.internal.parsing.utils;
+
+public abstract class LineLocator {
+    final protected int[] rowStarts;
+    
+    public LineLocator(int[] rowStarts) {
+        this.rowStarts = rowStarts;
+    }
+    
+    public abstract int lineNumberFromPosition(int position);
+    
+    public int columnNumber(int line, int position) {
+        return position - rowStarts[line];
+    }
+}