relooper input is ascii, emit it to the heap more efficiently with writeAsciiToMemory1.6.1

2 files changed, 15 insertions, 4 deletions

diff --git a/src/preamble.js b/src/preamble.js
index 8e70cb74..acff665f 100644
--- a/src/preamble.js
+++ b/src/preamble.js
@@ -908,6 +908,17 @@ function writeArrayToMemory(array, buffer) {
 }
 Module['writeArrayToMemory'] = writeArrayToMemory;
 
+function writeAsciiToMemory(str, buffer, dontAddNull) {
+  for (var i = 0; i < str.length; i++) {
+#if ASSERTIONS
+    assert(str.charCodeAt(i) === str.charCodeAt(i)&0xff);
+#endif
+    {{{ makeSetValue('buffer', 'i', 'str.charCodeAt(i)', 'i8') }}}
+  }
+  if (!dontAddNull) {{{ makeSetValue('buffer', 'str.length', 0, 'i8') }}}
+}
+Module['writeAsciiToMemory'] = writeAsciiToMemory;
+
 {{{ unSign }}}
 {{{ reSign }}}
 
diff --git a/src/relooper/emscripten/glue.js b/src/relooper/emscripten/glue.js
index f5b9e142..587cf529 100644
--- a/src/relooper/emscripten/glue.js
+++ b/src/relooper/emscripten/glue.js
@@ -19,10 +19,10 @@
   RelooperGlue['addBlock'] = function(text, branchVar) {
     assert(this.r);
     assert(text.length+1 < TBUFFER_SIZE, 'buffer too small, increase RELOOPER_BUFFER_SIZE');
-    writeStringToMemory(text, tbuffer);
+    writeAsciiToMemory(text, tbuffer);
     if (branchVar) {
       assert(branchVar.length+1 < VBUFFER_SIZE, 'buffer too small, increase RELOOPER_BUFFER_SIZE');
-      writeStringToMemory(branchVar, vbuffer);
+      writeAsciiToMemory(branchVar, vbuffer);
     }
     var b = _rl_new_block(tbuffer, branchVar ? vbuffer : 0);
     _rl_relooper_add_block(this.r, b);
@@ -32,14 +32,14 @@
     assert(this.r);
     if (condition) {
       assert(condition.length+1 < TBUFFER_SIZE/2, 'buffer too small, increase RELOOPER_BUFFER_SIZE');
-      writeStringToMemory(condition, tbuffer);
+      writeAsciiToMemory(condition, tbuffer);
       condition = tbuffer;
     } else {
       condition = 0; // allow undefined, null, etc. as inputs
     }
     if (code) {
       assert(code.length+1 < TBUFFER_SIZE/2, 'buffer too small, increase RELOOPER_BUFFER_SIZE');
-      writeStringToMemory(code, tbuffer + TBUFFER_SIZE/2);
+      writeAsciiToMemory(code, tbuffer + TBUFFER_SIZE/2);
       code = tbuffer + TBUFFER_SIZE/2;
     } else {
       code = 0; // allow undefined, null, etc. as inputs