Make source, line and column in call site absolute

Part of aligning the imlpementation with tc39/ecma426#188.

Author: szuend

src/decode/decode.ts

@@ -56,9 +56,6 @@ const DEFAULT_RANGE_STATE = {
   line: 0,
   column: 0,
   defScopeIdx: 0,
-  callsiteSourceIdx: 0,
-  callsiteLine: 0,
-  callsiteColumn: 0,
 };
 
 class Decoder {
@@ -173,9 +170,9 @@ class Decoder {
         }
         case Tag.GENERATED_RANGE_CALL_SITE: {
           this.#handleGeneratedRangeCallSite(
-            iter.nextSignedVLQ(),
-            iter.nextSignedVLQ(),
-            iter.nextSignedVLQ(),
+            iter.nextUnsignedVLQ(),
+            iter.nextUnsignedVLQ(),
+            iter.nextUnsignedVLQ(),
           );
           break;
         }
@@ -352,21 +349,10 @@ class Decoder {
       return;
     }
 
-    if (sourceIndex === 0 && line === 0) {
-      this.#rangeState.callsiteColumn += column;
-    } else if (sourceIndex === 0) {
-      this.#rangeState.callsiteLine += line;
-      this.#rangeState.callsiteColumn = column;
-    } else {
-      this.#rangeState.callsiteSourceIdx += sourceIndex;
-      this.#rangeState.callsiteLine = line;
-      this.#rangeState.callsiteColumn = column;
-    }
-
     range.callSite = {
-      sourceIndex: this.#rangeState.callsiteSourceIdx,
-      line: this.#rangeState.callsiteLine,
-      column: this.#rangeState.callsiteColumn,
+      sourceIndex,
+      line,
+      column,
     };
   }
 

src/encode/encoder.ts

@@ -22,9 +22,6 @@ const DEFAULT_RANGE_STATE = {
   line: 0,
   column: 0,
   defScopeIdx: 0,
-  callsiteSourceIdx: 0,
-  callsiteLine: 0,
-  callsiteColumn: 0,
 };
 
 export class Encoder {
@@ -217,21 +214,9 @@ export class Encoder {
 
     // TODO: Throw if stackFrame flag is set or OriginalScope index is invalid or no generated range is here.
 
-    const encodedSourceIndex = sourceIndex - this.#rangeState.callsiteSourceIdx;
-    const encodedLine = encodedSourceIndex == 0
-      ? line - this.#rangeState.callsiteLine
-      : line;
-    const encodedColumn = encodedLine == 0
-      ? column - this.#rangeState.callsiteColumn
-      : column;
-
-    this.#rangeState.callsiteSourceIdx = sourceIndex;
-    this.#rangeState.callsiteLine = line;
-    this.#rangeState.callsiteColumn = column;
-
-    this.#encodeTag(EncodedTag.GENERATED_RANGE_CALL_SITE).#encodeSigned(
-      encodedSourceIndex,
-    ).#encodeSigned(encodedLine).#encodeSigned(encodedColumn).#finishItem();
+    this.#encodeTag(EncodedTag.GENERATED_RANGE_CALL_SITE).#encodeUnsigned(
+      sourceIndex,
+    ).#encodeUnsigned(line).#encodeUnsigned(column).#finishItem();
   }
 
   #encodeGeneratedRangeEnd(range: GeneratedRange) {