lezer - npm Package Compare versions

Comparing version 0.4.0 to 0.4.1

CHANGELOG.md

@@ -0,1 +1,7 @@
+## 0.4.1 (2019-10-14)
+
+### Bug fixes
+
+Fix an infinite loop where error recovery keeps finding zero-length tokens and imagining it's making progress.
+
 ## 0.4.0 (2019-09-10)
@@ -2,0 +8,0 @@

dist/index.js

@@ -239,2 +239,4 @@ 'use strict';
             var start = this.pos, nextState = action, parser = this.cx.parser;
+            if (nextEnd > this.pos)
+                this.badness = (this.badness >> 1) + (this.badness >> 2); // (* 0.75)
             if (nextEnd > this.pos || next <= parser.maxNode) {
@@ -248,5 +250,4 @@ this.pos = nextEnd;
                 this.buffer.push(next, start, nextEnd, 4);
-            this.badness = (this.badness >> 1) + (this.badness >> 2); // (* 0.75)
         }
-        else { // Shift-and-stay, which means this is skipped token
+        else { // Shift-and-stay, which means this is a skipped token
             if (next <= this.cx.parser.maxNode)
@@ -253,0 +254,0 @@ this.buffer.push(next, this.pos, nextEnd, 4);

package.json

 {
   "name": "lezer",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Incremental parser",
@@ -5,0 +5,0 @@ "main": "dist/index.js",

src/stack.ts

@@ -199,2 +199,4 @@ import {Action, Term, StateFlag, ParseState} from "./constants"
       let start = this.pos, nextState = action, {parser} = this.cx
+      if (nextEnd > this.pos)
+        this.badness = (this.badness >> 1) + (this.badness >> 2) // (* 0.75)
       if (nextEnd > this.pos || next <= parser.maxNode) {
@@ -206,4 +208,3 @@ this.pos = nextEnd
       if (next <= parser.maxNode) this.buffer.push(next, start, nextEnd, 4)
-      this.badness = (this.badness >> 1) + (this.badness >> 2) // (* 0.75)
-    } else { // Shift-and-stay, which means this is skipped token
+    } else { // Shift-and-stay, which means this is a skipped token
       if (next <= this.cx.parser.maxNode) this.buffer.push(next, this.pos, nextEnd, 4)
@@ -210,0 +211,0 @@ this.pos = nextEnd

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Improved metrics

Total package byte prevSize

1974688

increased by0.02%

Lines of code

3009

increased by0.07%

No dependency changes