Merge pull request #2934 from ethereum/fixdisablingparser

smarter disabling

apps/remix-ide/src/app/plugins/parser/services/code-parser-antlr-service.ts

@@ -30,9 +30,9 @@ export default class CodeParserAntlrService {
             text: string,
             ast: antlr.ParseResult | null,
             duration?: number,
-            blockDuration?: number,
             parsingEnabled?: boolean,
-            blocks?: BlockDefinition[]
+            blocks?: BlockDefinition[],
+            blockDurations?: number[]
         }
     } = {};
     constructor(plugin: CodeParser) {
@@ -52,15 +52,15 @@ export default class CodeParserAntlrService {
             switch (ev.data.cmd) {
                 case 'parsed':
                     if (ev.data.ast && self.parserStartTime === ev.data.timestamp) {
-                        self.setFileParsingState(ev.data.file, ev.data.blockDuration)
                         self.cache[ev.data.file] = {
                             ...self.cache[ev.data.file],
                             text: ev.data.text,
                             ast: ev.data.ast,
                             duration: ev.data.duration,
-                            blockDuration: ev.data.blockDuration,
                             blocks: ev.data.blocks,
+                            blockDurations: self.cache[ev.data.file].blockDurations? [...self.cache[ev.data.file].blockDurations.slice(-3), ev.data.blockDuration]: [ev.data.blockDuration]
                         }
+                        self.setFileParsingState(ev.data.file)
                     }
                     break;
             }
@@ -68,16 +68,19 @@ export default class CodeParserAntlrService {
         });
     }
 
-    setFileParsingState(file: string, duration: number) {
-
+    setFileParsingState(file: string) {
         if (this.cache[file]) {
-            if (this.cache[file].blockDuration) {
-                if (this.cache[file].blockDuration > this.parserTreshHold && duration > this.parserTreshHold) {
+            if (this.cache[file].blockDurations && this.cache[file].blockDurations.length > 3) {
+                // calculate average of durations to determine if the parsing should be disabled
+                const values = [...this.cache[file].blockDurations]
+                const average = values.reduce((a, b) => a + b, 0) / values.length
+                if (average > this.parserTreshHold) {
                     this.cache[file].parsingEnabled = false
-                    this.plugin.call('notification', 'toast', `This file is big so some autocomplete features will be disabled.`)
+                    this.plugin.call('notification', 'toast','Some autocomplete features will be temporarily disabled because the file takes too long to process.')
                 } else {
                     this.cache[file].parsingEnabled = true
                 }
+                
             }
         }
     }
@@ -127,7 +130,8 @@ export default class CodeParserAntlrService {
                     this.cache[this.plugin.currentFile] = {
                         text: '',
                         ast: null,
-                        parsingEnabled: true
+                        parsingEnabled: true,
+                        blockDurations: []
                     }
                 }
                 if (this.cache[this.plugin.currentFile] && this.cache[this.plugin.currentFile].text !== fileContent) {
@@ -244,7 +248,10 @@ export default class CodeParserAntlrService {
             try {
                 const startTime = Date.now()
                 const blocks = (SolidityParser as any).parseBlock(fileContent, { loc: true, range: true, tolerant: true })
-                this.setFileParsingState(this.plugin.currentFile, Date.now() - startTime)
+                if(this.cache[this.plugin.currentFile] && this.cache[this.plugin.currentFile].blockDurations){
+                    this.cache[this.plugin.currentFile].blockDurations = [...this.cache[this.plugin.currentFile].blockDurations.slice(-3), Date.now() - startTime]
+                    this.setFileParsingState(this.plugin.currentFile)
+                }
                 if (blocks) this.cache[this.plugin.currentFile].blocks = blocks
                 return blocks
             } catch (e) {
@@ -279,4 +286,4 @@ export default class CodeParserAntlrService {
         return block
     }
 
-}
+}