Fix case when block statement is multi-line

Author: gmickus

resources/functionalTests/block/56function-block-multiple-line/input.p

@@ -0,0 +1,7 @@
+/* formatterSettingsOverride */
+/*  { "AblFormatter.blockFormatting": true}*/
+
+function GetDLC returns character
+():
+      define variable cValue as character no-undo.
+end function.

resources/functionalTests/block/56function-block-multiple-line/target.p

@@ -0,0 +1,7 @@
+/* formatterSettingsOverride */
+/*  { "AblFormatter.blockFormatting": true}*/
+
+function GetDLC returns character
+():
+    define variable cValue as character no-undo.
+end function.

resources/functionalTests/block/57class-block-multiple-line/input.p

@@ -0,0 +1,14 @@
+/* formatterSettingsOverride */
+/*  { "AblFormatter.blockFormatting": true}*/
+
+CLASS Validation.Something
+    INHERITS BaseStuff
+    IMPLEMENTS IThing
+    {&SERIALIZABLE}:
+
+        METHOD PUBLIC OVERRIDE IType GetType():
+         DEFINE VARIABLE oType AS IType NO-UNDO .
+              RETURN oType .
+        END METHOD.
+
+END CLASS.

resources/functionalTests/block/57class-block-multiple-line/target.p

@@ -0,0 +1,14 @@
+/* formatterSettingsOverride */
+/*  { "AblFormatter.blockFormatting": true}*/
+
+CLASS Validation.Something
+    INHERITS BaseStuff
+    IMPLEMENTS IThing
+    {&SERIALIZABLE}:
+
+    METHOD PUBLIC OVERRIDE IType GetType():
+        define VARIABLE oType AS IType NO-UNDO.
+        RETURN oType .
+    END METHOD.
+
+END CLASS.

src/v2/formatters/block/BlockFormatter.ts

@@ -65,10 +65,13 @@ export class BlockFormater extends AFormatter implements IFormatter {
 
         const indentationStep = this.settings.tabSize();
         let indexOfColon = -1;
+        let deltaBetweenStartAndColon = 0;
         let blockStatementsStartRows = node.children
             .filter((child) => {
                 if (child.type === SyntaxNodeType.ColonKeyword) {
                     indexOfColon = child.startPosition.column;
+                    deltaBetweenStartAndColon =
+                        child.startPosition.row - parent.startPosition.row;
                     return false;
                 }
                 return true;
@@ -82,9 +85,19 @@ export class BlockFormater extends AFormatter implements IFormatter {
                     )
             );
 
+        let linesBeforeColumn = FormatterHelper.getCurrentText(parent, fullText)
+            .split(fullText.eolDelimiter)
+            .slice(0, deltaBetweenStartAndColon);
+        const onlyWhiteSpacesBeforeColumnLine = linesBeforeColumn.every(
+            (line) => line.trim() === ""
+        );
+
         let codeLines = FormatterHelper.getCurrentText(parent, fullText).split(
             fullText.eolDelimiter
         );
+        if (!onlyWhiteSpacesBeforeColumnLine) {
+            codeLines = codeLines.slice(deltaBetweenStartAndColon);
+        }
 
         // Do not do any changes for one-liner blocks
         if (codeLines.length <= 1) {
@@ -99,7 +112,7 @@ export class BlockFormater extends AFormatter implements IFormatter {
             codeLines.pop();
         }
 
-        if (indexOfColon !== -1) {
+        if (indexOfColon !== -1 && deltaBetweenStartAndColon === 0) {
             // indexOfColon += parentIndentation;
             indexOfColon -= parent.startPosition.column;
             for (let i = indexOfColon + 1; i >= indexOfColon - 1; i--) {
@@ -129,6 +142,11 @@ export class BlockFormater extends AFormatter implements IFormatter {
             }
         }
 
+        // Add back the first lines before column of the block statement
+        if (!onlyWhiteSpacesBeforeColumnLine) {
+            codeLines = linesBeforeColumn.concat(codeLines);
+        }
+
         let n = 0;
         let lineChangeDelta = 0;
         codeLines.forEach((codeLine, index) => {