WIP: Cursor

cursor.go

@@ -41,6 +41,20 @@ func (c *Cursor) Previous() bool {
 	return true
 }
 
+func (c *Cursor) PeekNext() bool {
+	c.Save()
+	defer c.Reset()
+
+	return c.Next()
+}
+
+func (c *Cursor) PeekPrevious() bool {
+	c.Save()
+	defer c.Reset()
+
+	return c.Previous()
+}
+
 func (c *Cursor) Stmt() ast.Stmt {
 	return c.statements[c.currentIdx]
 }

testdata/src/wip/wip.go

@@ -1 +1,10 @@
 package testpkg
+
+func fn1() {
+	if foo := 1; foo != 2 {
+		panic(foo)
+	}
+	if foo := 2; foo != 2 { // want "missing whitespace decreases readability"
+		panic(bar)
+	}
+}

testdata/src/wip/wip.go.golden

@@ -1 +1,11 @@
 package testpkg
+
+func fn1() {
+	if foo := 1; foo != 2 {
+		panic(foo)
+	}
+
+	if foo := 2; foo != 2 { // want "missing whitespace decreases readability"
+		panic(bar)
+	}
+}

wsl.go

@@ -75,12 +75,17 @@ func (w *WSL) CheckIf(stmt *ast.IfStmt, cursor *Cursor) {
 	previousIdents := []*ast.Ident{}
 	if cursor.Previous() {
 		previousIdents = allIdents(cursor.Stmt())
+		cursor.Next()
 	}
 
 	n := w.numberOfStatementsAbove(cursor)
 	if n > 0 {
 		intersects := identIntersection(currentIdents, previousIdents)
 
+		fmt.Println(currentIdents)
+		fmt.Println(previousIdents)
+		fmt.Println(intersects)
+
 		// No idents above share name with one in the if statement.
 		if len(intersects) == 0 {
 			w.addError(