From d46b09ac32143e1b958af693afffe958082a12b4 Mon Sep 17 00:00:00 2001
From: yann300 <yann.levreau@gmail.com>
Date: Mon, 25 Sep 2017 11:22:39 +0200
Subject: [PATCH 1/3] add decode fn

---
 src/util/sourceMappingDecoder.js | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/util/sourceMappingDecoder.js b/src/util/sourceMappingDecoder.js
index 39ea602a7a..eb1154499d 100644
--- a/src/util/sourceMappingDecoder.js
+++ b/src/util/sourceMappingDecoder.js
@@ -18,6 +18,23 @@ function SourceMappingDecoder () {
  */
 SourceMappingDecoder.prototype.atIndex = atIndex
 
+/**
+ * Decode the given @arg value
+ *
+ * @param {string} value      - source location to decode ( should be start:length:file )
+ * @return {Object} returns the decompressed source mapping {start, length, file}
+ */
+SourceMappingDecoder.prototype.decode = function (value) {
+  if (value) {
+    value = value.split(':')
+    return {
+      start: parseInt(value[0]),
+      length: parseInt(value[1]),
+      file: parseInt(value[2])
+    }
+  }
+}
+
 /**
  * Decode the source mapping for the given compressed mapping
  *

From 8351bdf6a57bb7a735d85ccb573d7984caf7ecc0 Mon Sep 17 00:00:00 2001
From: yann300 <yann.levreau@gmail.com>
Date: Mon, 25 Sep 2017 11:22:50 +0200
Subject: [PATCH 2/3] nodesAtCursorPosition

---
 src/util/sourceMappingDecoder.js | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/util/sourceMappingDecoder.js b/src/util/sourceMappingDecoder.js
index eb1154499d..a0dc4bdc4d 100644
--- a/src/util/sourceMappingDecoder.js
+++ b/src/util/sourceMappingDecoder.js
@@ -9,6 +9,15 @@ function SourceMappingDecoder () {
   // s:l:f:j
 }
 
+/**
+ * get a list of nodes that are at the given @arg position
+ *
+ * @param {String} astNodeType      - type of node to return
+ * @param {Int} position     - cursor position
+ * @return {Object} ast object given by the compiler
+ */
+SourceMappingDecoder.prototype.nodesAtPosition = nodesAtPosition
+
 /**
  * Decode the source mapping for the given @arg index
  *
@@ -156,6 +165,29 @@ function findNodeAtSourceLocation (astNodeType, sourceLocation, ast) {
   return found
 }
 
+function nodesAtPosition (astNodeType, position, ast) {
+  var astWalker = new AstWalker()
+  var callback = {}
+  var found = {}
+  callback['*'] = function (node) {
+    var nodeLocation = sourceLocationFromAstNode(node)
+    if (!nodeLocation) {
+      return
+    }
+    if (nodeLocation.start <= position && nodeLocation.start + nodeLocation.length >= position) {
+      if (!astNodeType || astNodeType === node.name) {
+        found[node.name] = node
+        if (astNodeType) return false
+      }
+      return true
+    } else {
+      return false
+    }
+  }
+  astWalker.walk(ast.AST, callback)
+  return found
+}
+
 function atIndex (index, mapping) {
   var ret = {}
   var map = mapping.split(';')

From 6866d26561b73fd80e7115830273a26649f5a9fc Mon Sep 17 00:00:00 2001
From: yann300 <yann.levreau@gmail.com>
Date: Mon, 25 Sep 2017 13:04:05 +0200
Subject: [PATCH 3/3] return array instead of object

---
 src/util/sourceMappingDecoder.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/util/sourceMappingDecoder.js b/src/util/sourceMappingDecoder.js
index a0dc4bdc4d..aef1b66269 100644
--- a/src/util/sourceMappingDecoder.js
+++ b/src/util/sourceMappingDecoder.js
@@ -168,7 +168,7 @@ function findNodeAtSourceLocation (astNodeType, sourceLocation, ast) {
 function nodesAtPosition (astNodeType, position, ast) {
   var astWalker = new AstWalker()
   var callback = {}
-  var found = {}
+  var found = []
   callback['*'] = function (node) {
     var nodeLocation = sourceLocationFromAstNode(node)
     if (!nodeLocation) {
@@ -176,7 +176,7 @@ function nodesAtPosition (astNodeType, position, ast) {
     }
     if (nodeLocation.start <= position && nodeLocation.start + nodeLocation.length >= position) {
       if (!astNodeType || astNodeType === node.name) {
-        found[node.name] = node
+        found.push(node)
         if (astNodeType) return false
       }
       return true