X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Ferrors%2FLocations.java;fp=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Ferrors%2FLocations.java;h=d22a69442625708d37b98e13f204574ef0666522;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/errors/Locations.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/errors/Locations.java
new file mode 100644
index 000000000..d22a69442
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/errors/Locations.java
@@ -0,0 +1,43 @@
+package org.simantics.scl.compiler.errors;
+
+public class Locations {
+
+    public static final long NO_LOCATION = 0x7fffffff80000000L;
+    
+    public static long location(int begin, int end) {
+        return (((long)begin) << 32) | (((long)end) );
+    }
+    
+    public static int beginOf(long location) {
+        return (int)(location >>> 32);
+    }
+    
+    public static int endOf(long location) {
+        return (int)location;
+    }
+    
+    public static int length(long location) {
+        return endOf(location) - beginOf(location);
+    }
+
+    
+    public static long combine(long a, long b) {
+        return location(Math.min(beginOf(a), beginOf(b)), Math.max(endOf(a), endOf(b)));
+    }
+    
+    public static int compare(long a, long b) {
+        if(a < b) 
+            return -1;
+        if(a > b) 
+            return 1;
+        return 0;
+    }
+
+    public static String annotatate(String annotationBegin, String annotationEnd, String formula, long location) {
+        if(location == NO_LOCATION)
+            return annotationBegin + formula + annotationEnd;
+        int begin = beginOf(location);
+        int end = endOf(location);
+        return formula.substring(0, begin) + annotationBegin + formula.substring(begin, end) + annotationEnd + formula.substring(end);
+    }
+}