From 187f9d6bb039147a6bb3f3234cfb515c56fb2a99 Mon Sep 17 00:00:00 2001
From: David Majda <david@majda.cz>
Date: Tue, 3 Dec 2013 21:20:57 +0100
Subject: [PATCH] Remove the |NIP_CURR_POS| bytecode instruction

After the previous commit is is not used anywhere.
---
 lib/compiler/opcodes.js                    |  1 -
 lib/compiler/passes/generate-bytecode.js   |  6 ------
 lib/compiler/passes/generate-javascript.js | 12 ------------
 3 files changed, 19 deletions(-)

diff --git a/lib/compiler/opcodes.js b/lib/compiler/opcodes.js
index fb3fa71..614925e 100644
--- a/lib/compiler/opcodes.js
+++ b/lib/compiler/opcodes.js
@@ -7,7 +7,6 @@ module.exports = {
   POP_CURR_POS:     3,    // POP_CURR_POS
   POP_N:            4,    // POP_N n
   NIP:              5,    // NIP
-  NIP_CURR_POS:     6,    // NIP_CURR_POS
   APPEND:           7,    // APPEND
   WRAP:             8,    // WRAP n
   TEXT:             9,    // TEXT
diff --git a/lib/compiler/passes/generate-bytecode.js b/lib/compiler/passes/generate-bytecode.js
index ddfae84..e00c59a 100644
--- a/lib/compiler/passes/generate-bytecode.js
+++ b/lib/compiler/passes/generate-bytecode.js
@@ -35,12 +35,6 @@ var utils = require("../../utils"),
  *        stack.pop();
  *        stack.push(value);
  *
- *  [6] NIP_CURR_POS
- *
- *        value = stack.pop();
- *        currPos = stack.pop();
- *        stack.push(value);
- *
  *  [7] APPEND
  *
  *        value = stack.pop();
diff --git a/lib/compiler/passes/generate-javascript.js b/lib/compiler/passes/generate-javascript.js
index 816957e..41ba34e 100644
--- a/lib/compiler/passes/generate-javascript.js
+++ b/lib/compiler/passes/generate-javascript.js
@@ -197,11 +197,6 @@ module.exports = function(ast, options) {
       '          ip++;',
       '          break;',
       '',
-      '        case ' + op.NIP_CURR_POS + ':',     // NIP_CURR_POS
-      '          peg$currPos = stack.splice(-2, 1)[0];',
-      '          ip++;',
-      '          break;',
-      '',
       '        case ' + op.APPEND + ':',           // APPEND
       '          stack[stack.length - 2].push(stack.pop());',
       '          ip++;',
@@ -482,13 +477,6 @@ module.exports = function(ast, options) {
             ip++;
             break;
 
-          case op.NIP_CURR_POS:     // NIP_CURR_POS
-            value = stack.pop();
-            parts.push('peg$currPos = ' + stack.pop() + ';');
-            parts.push(stack.push(value));
-            ip++;
-            break;
-
           case op.APPEND:           // APPEND
             value = stack.pop();
             parts.push(stack.top() + '.push(' + value + ');');