From c7c0f8bd6bce2bb14c2766f17265ba790de89fea Mon Sep 17 00:00:00 2001
From: "Anantachai Saothong (Manta)" <thisismanta@outlook.com>
Date: Mon, 24 Sep 2018 18:07:08 +0700
Subject: [PATCH] Fixed removing parentheses around negation in an expression
 list See https://github.com/ThisIsManta/vscode-stylus-supremacy/issues/25

---
 edge/format.js                                      | 13 ++++++++-----
 .../input.styl                                      |  3 ++-
 .../output.styl                                     |  1 +
 .../input.styl                                      |  3 ++-
 .../output.styl                                     |  1 +
 5 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/edge/format.js b/edge/format.js
index 248de42..2ebe6de 100644
--- a/edge/format.js
+++ b/edge/format.js
@@ -625,12 +625,11 @@ function format(content, options = {}) {
 					inputNode.parent.op !== '[]' &&
 					inputNode.parent.op !== '[]='
 				)
-			const parentIsStringInterpolation = (
+			const parentIsStringInterpolation =
 				inputNode.parent instanceof Stylus.nodes.BinOp &&
 				inputNode.parent.op === '%' &&
 				inputNode.parent.right === inputNode &&
 				inputNode.nodes.length > 1
-			)
 			const parentIsNestedExpression =
 				inputNode.nodes.length === 1 &&
 				inputNode.parent instanceof Stylus.nodes.Expression &&
@@ -646,16 +645,19 @@ function format(content, options = {}) {
 					inputNode.parent.parent instanceof Stylus.nodes.Object ||
 					inputNode.parent.parent instanceof Stylus.nodes.BinOp && inputNode.parent.parent.op === '[]'
 				) === false
-			const currentIsEmpty = (
+			const currentIsEmpty =
 				inputNode.nodes.length === 0 &&
 				inputNode.parent instanceof Stylus.nodes.Expression &&
 				!(inputNode.parent instanceof Stylus.nodes.Arguments) && // Note that `Arguments` type inherits `Expression` type
 				inputNode.parent.nodes.length === 1
-			)
 			const currentIsDivision =
 				inputNode.nodes.length === 1 &&
 				inputNode.nodes[0] instanceof Stylus.nodes.BinOp &&
 				inputNode.nodes[0].op === '/'
+			const currentIsNegation =
+				inputNode.nodes.length === 1 &&
+				inputNode.nodes[0] instanceof Stylus.nodes.UnaryOp &&
+				inputNode.nodes[0].op === '-'
 			const currentHasUnitSuffix =
 				inputNode.nodes.length === 2 &&
 				inputNode.nodes[0] instanceof Stylus.nodes.BinOp &&
@@ -665,7 +667,8 @@ function format(content, options = {}) {
 				parentIsStringInterpolation ||
 				parentIsNestedExpression ||
 				currentIsEmpty ||
-				currentIsDivision
+				currentIsDivision ||
+				currentIsNegation
 			if (currentHasParenthesis || currentHasUnitSuffix) {
 				outputBuffer.append(openParen)
 			}
diff --git a/spec/option-insert-parenthesis-after-negation-false/input.styl b/spec/option-insert-parenthesis-after-negation-false/input.styl
index b3e55a1..8f6b88f 100644
--- a/spec/option-insert-parenthesis-after-negation-false/input.styl
+++ b/spec/option-insert-parenthesis-after-negation-false/input.styl
@@ -5,4 +5,5 @@
 .class2
   top -x
   left - x
-  right -(x)
\ No newline at end of file
+  right -(x)
+  padding 1px (- x)
\ No newline at end of file
diff --git a/spec/option-insert-parenthesis-after-negation-false/output.styl b/spec/option-insert-parenthesis-after-negation-false/output.styl
index 1e1f3e6..2bfad62 100644
--- a/spec/option-insert-parenthesis-after-negation-false/output.styl
+++ b/spec/option-insert-parenthesis-after-negation-false/output.styl
@@ -8,4 +8,5 @@
 	top: -x;
 	left: - x;
 	right: -(x);
+	padding: 1px (- x);
 }
\ No newline at end of file
diff --git a/spec/option-insert-parenthesis-after-negation-true/input.styl b/spec/option-insert-parenthesis-after-negation-true/input.styl
index b3e55a1..8f6b88f 100644
--- a/spec/option-insert-parenthesis-after-negation-true/input.styl
+++ b/spec/option-insert-parenthesis-after-negation-true/input.styl
@@ -5,4 +5,5 @@
 .class2
   top -x
   left - x
-  right -(x)
\ No newline at end of file
+  right -(x)
+  padding 1px (- x)
\ No newline at end of file
diff --git a/spec/option-insert-parenthesis-after-negation-true/output.styl b/spec/option-insert-parenthesis-after-negation-true/output.styl
index 2be0050..82b4bfc 100644
--- a/spec/option-insert-parenthesis-after-negation-true/output.styl
+++ b/spec/option-insert-parenthesis-after-negation-true/output.styl
@@ -8,4 +8,5 @@
 	top: -x;
 	left: -(x);
 	right: -(x);
+	padding: 1px (-(x));
 }
\ No newline at end of file