From d20aabdc8f1e633f0eaf63df51473e0d4ea111de Mon Sep 17 00:00:00 2001
From: Tom Beckmann <tomjonabc@gmail.com>
Date: Sun, 24 Sep 2023 12:29:51 +0200
Subject: [PATCH] dc: keep empty lines

---
 packages/DomainCode-Parser/DCBlock.class.st   | 16 ++++++++--
 .../DCPairCompleteTest.class.st               | 12 +++++++
 .../DomainCode-Parser/DCParseTest.class.st    | 31 +++++++++++++++++++
 packages/DomainCode-Parser/DCUnknown.class.st |  6 ++++
 .../SBTSCursorRaw.class.st                    | 17 ++++++++++
 5 files changed, 79 insertions(+), 3 deletions(-)
 create mode 100644 packages/DomainCode-Parser/DCParseTest.class.st

diff --git a/packages/DomainCode-Parser/DCBlock.class.st b/packages/DomainCode-Parser/DCBlock.class.st
index d656243..4df95c7 100644
--- a/packages/DomainCode-Parser/DCBlock.class.st
+++ b/packages/DomainCode-Parser/DCBlock.class.st
@@ -24,7 +24,9 @@ DCBlock class >> fromCursor: aCursor language: aLanguage [
 			
 			aCursor gotoFirstChild
 				ifTrue: [
-					[node addMorphBack: (self fromCursor: aCursor language: aLanguage)] doWhileFalse: [aCursor gotoNextSibling].
+					[
+						aCursor numberOfNewLinesToNext - 1 timesRepeat: [node addMorphBack: (DCUnknown new language: aLanguage)].
+						node addMorphBack: (self fromCursor: aCursor language: aLanguage)] doWhileFalse: [aCursor gotoNextSibling].
 					aCursor gotoParent]
 				ifFalse: [
 					aCursor text ifNotEmpty: [:text |
@@ -96,7 +98,7 @@ DCBlock >> deleteBeforeCursor [
 								before contents: before contents, m contents.
 								m contents: '']
 							ifFalse: [before contents ifNotEmpty: [before contents: before contents allButLast]]]]
-				ifFalse: [m deleteBeforeCursor]]
+				ifFalse: [m contents ifEmpty: [self deleteBlock] ifNotEmpty: [m deleteBeforeCursor]]]
 		input: Character backspace asString
 ]
 
@@ -162,7 +164,9 @@ DCBlock >> handleInsertEvent: anEvent in: textMorph [
 	input := anEvent keyCharacter asString.
 	pairMap at: input ifPresent: [:complete |
 		"do not autocomplete quotes in words"
-		(textMorph contents notEmpty and: [complete = '''']) ifTrue: [^ textMorph insertString: input].
+		((textMorph characterBeforeCursor
+			ifNotNil: #isAlphaNumeric
+			ifNil: [false]) and: [complete = '''']) ifTrue: [^ textMorph insertString: input].
 		
 		"do not autocomplete after backslash"
 		textMorph characterBeforeCursor = $\ ifTrue: [^ textMorph insertString: input].
@@ -282,6 +286,12 @@ DCBlock >> insertStatementAboveOrBelow: anAboveBoolean [
 			morph: (DCUnknown new language: self language))]
 ]
 
+{ #category : #'as yet unclassified' }
+DCBlock >> insertStatementHasCandidate [
+
+	^ true
+]
+
 { #category : #'as yet unclassified' }
 DCBlock >> isBlockBody [
 
diff --git a/packages/DomainCode-Parser/DCPairCompleteTest.class.st b/packages/DomainCode-Parser/DCPairCompleteTest.class.st
index 25e3284..92a8c34 100644
--- a/packages/DomainCode-Parser/DCPairCompleteTest.class.st
+++ b/packages/DomainCode-Parser/DCPairCompleteTest.class.st
@@ -21,6 +21,18 @@ DCPairCompleteTest >> testDeleteInPair [
 	self assert: '' equals: editor childSandblocks first sourceString
 ]
 
+{ #category : #'as yet unclassified' }
+DCPairCompleteTest >> testDontSkipInsertQuoteAfterSpace [
+
+	| program editor |
+	program := DCBlock parse: 'a' language: SBJavascript.
+	editor := self editorAndWorldFor: program.
+	program lastDeepChild startInputAtEnd.
+	self type: ' ''' in: editor.
+	self assert: 'a
+''''' equals: editor childSandblocks first sourceString
+]
+
 { #category : #'as yet unclassified' }
 DCPairCompleteTest >> testIgnoreAfterBackslash [
 
diff --git a/packages/DomainCode-Parser/DCParseTest.class.st b/packages/DomainCode-Parser/DCParseTest.class.st
new file mode 100644
index 0000000..e74ff36
--- /dev/null
+++ b/packages/DomainCode-Parser/DCParseTest.class.st
@@ -0,0 +1,31 @@
+Class {
+	#name : #DCParseTest,
+	#superclass : #SBTest,
+	#category : #'DomainCode-Parser'
+}
+
+{ #category : #'as yet unclassified' }
+DCParseTest >> testDeleteEmptyLine [
+
+	| program editor |
+	program := DCBlock parse: 'a;
+
+b;' language: SBJavascript.
+	editor := self editorAndWorldFor: program.
+	program childSandblocks second startInputAtEnd.
+	editor handle: (self keyboardEvent: Character backspace).
+	self assert: 2 equals: editor childSandblocks first childSandblocks size
+]
+
+{ #category : #'as yet unclassified' }
+DCParseTest >> testKeepEmptyLine [
+
+	| program editor |
+	program := DCBlock parse: 'a;
+
+b;' language: SBJavascript.
+	editor := self editorAndWorldFor: program.
+	program lastDeepChild startInputAtEnd.
+	self type: 'b' in: editor.
+	self assert: 3 equals: editor childSandblocks first childSandblocks size
+]
diff --git a/packages/DomainCode-Parser/DCUnknown.class.st b/packages/DomainCode-Parser/DCUnknown.class.st
index 9b5a47b..ed20797 100644
--- a/packages/DomainCode-Parser/DCUnknown.class.st
+++ b/packages/DomainCode-Parser/DCUnknown.class.st
@@ -15,3 +15,9 @@ DCUnknown >> initialize [
 		contents: '';
 		range: SBTSRange null)
 ]
+
+{ #category : #'as yet unclassified' }
+DCUnknown >> prefersNoBorder [
+
+	^ true
+]
diff --git a/packages/Sandblocks-TreeSitter/SBTSCursorRaw.class.st b/packages/Sandblocks-TreeSitter/SBTSCursorRaw.class.st
index 52a5f66..7c8edf2 100644
--- a/packages/Sandblocks-TreeSitter/SBTSCursorRaw.class.st
+++ b/packages/Sandblocks-TreeSitter/SBTSCursorRaw.class.st
@@ -181,6 +181,23 @@ SBTSCursorRaw >> node [
 		do: {[cursor currentNode]. [library cursorCurrentNode: cursor]}
 ]
 
+{ #category : #'as yet unclassified' }
+SBTSCursorRaw >> numberOfNewLinesToNext [
+
+	| current previous text |
+	self atEnd
+		ifTrue: [
+			current := nil.
+			previous := self node]
+		ifFalse: [
+			current := self node.
+			previous := self previousNode: current.
+			previous ifNil: [^ 0]].
+	self position > (self endByteIndex: previous) ifTrue: [^ 0].
+	text := self textBetween: previous and: current.
+	^ text occurrencesOf: Character lf
+]
+
 { #category : #'as yet unclassified' }
 SBTSCursorRaw >> parent [