rule_parser uses []byte

intern target names: share the same string as much as possible.

$ ./repo/android.sh time kati -c -kati_memstats='alloc={{.Alloc}},total={{.TotalAlloc}},sys={{.Sys}},malloc={{.Mallocs}},free={{.Frees}},heap idle={{.HeapIdle}},inuse={{.HeapInuse}},released={{.HeapReleased}},pause={{.PauseTotalNs}},numGC={{.NumGC}}'
...
alloc=686232544,total=9471977912,sys=990856408,malloc=204647708,free=200142535,heap idle=5914624,inuse=909885440,released=0,pause=10103883229,numGC=341

1 files changed, 2 insertions, 2 deletions

diff --git a/eval.go b/eval.go
index 506ffd5..9dc2815 100644
--- a/eval.go
+++ b/eval.go
@@ -152,7 +152,7 @@ func (ev *Evaluator) evalMaybeRule(ast *MaybeRuleAST) {
 		filename: ast.filename,
 		lineno:   ast.lineno,
 	}
-	assign, err := rule.parse(string(line)) // use []byte?
+	assign, err := rule.parse(line)
 	if err != nil {
 		Error(ast.filename, ast.lineno, "%v", err.Error())
 	}
@@ -168,7 +168,7 @@ func (ev *Evaluator) evalMaybeRule(ast *MaybeRuleAST) {
 			if err != nil {
 				panic(fmt.Errorf("parse %s:%d %v", ev.filename, ev.lineno, err))
 			}
-			assign, err = rule.parse(string(ev.Value(lexpr)))
+			assign, err = rule.parse(ev.Value(lexpr))
 			if err != nil {
 				Error(ast.filename, ast.lineno, "%v", err.Error())
 			}