From 276f2b319188ea905ebfc39ebaab684a2255c012 Mon Sep 17 00:00:00 2001
From: Evan Martin <martine@danga.com>
Date: Wed, 7 Dec 2011 08:33:49 -0800
Subject: refactor to remove Node::ready()

---
 src/build.cc | 6 ++----
 src/graph.cc | 9 +++++++++
 src/graph.h  | 4 +++-
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/src/build.cc b/src/build.cc
index d074d2b..3da915d 100644
--- a/src/build.cc
+++ b/src/build.cc
@@ -220,8 +220,7 @@ bool Plan::AddSubTarget(Node* node, vector<Node*>* stack, string* err) {
   if (node->dirty() && !want) {
     want = true;
     ++wanted_edges_;
-    if (find_if(edge->inputs_.begin(), edge->inputs_.end(),
-                not1(mem_fun(&Node::ready))) == edge->inputs_.end())
+    if (edge->AllInputsReady())
       ready_.insert(edge);
     if (!edge->is_phony())
       ++command_edges_;
@@ -295,8 +294,7 @@ void Plan::NodeFinished(Node* node) {
       continue;
 
     // See if the edge is now ready.
-    if (find_if((*i)->inputs_.begin(), (*i)->inputs_.end(),
-                not1(mem_fun(&Node::ready))) == (*i)->inputs_.end()) {
+    if ((*i)->AllInputsReady()) {
       if (want_i->second) {
         ready_.insert(*i);
       } else {
diff --git a/src/graph.cc b/src/graph.cc
index 424f941..818eb4f 100644
--- a/src/graph.cc
+++ b/src/graph.cc
@@ -143,6 +143,15 @@ bool Edge::RecomputeOutputDirty(BuildLog* build_log, time_t most_recent_input,
   return false;
 }
 
+bool Edge::AllInputsReady() const {
+  for (vector<Node*>::const_iterator i = inputs_.begin();
+       i != inputs_.end(); ++i) {
+    if ((*i)->in_edge_ && !(*i)->in_edge_->outputs_ready())
+      return false;
+  }
+  return true;
+}
+
 /// An Env for an Edge, providing $in and $out.
 struct EdgeEnv : public Env {
   EdgeEnv(Edge* edge) : edge_(edge) {}
diff --git a/src/graph.h b/src/graph.h
index 1a0b624..810d4ec 100644
--- a/src/graph.h
+++ b/src/graph.h
@@ -91,6 +91,9 @@ struct Edge {
   bool RecomputeOutputDirty(BuildLog* build_log, time_t most_recent_input,
                             const string& command, Node* output);
 
+  /// Return true if all inputs' in-edges are ready.
+  bool AllInputsReady() const;
+
   string EvaluateCommand();  // XXX move to env, take env ptr
   string EvaluateDepFile();
   string GetDescription();
@@ -137,7 +140,6 @@ struct Node {
   Node(FileStat* file) : file_(file), dirty_(false), in_edge_(NULL) {}
 
   bool dirty() const { return dirty_; }
-  bool ready() const { return !in_edge_ || in_edge_->outputs_ready(); }
 
   FileStat* file_;
   bool dirty_;
-- 
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