breakpoint manager

src/code/breakpointManager.js

@@ -0,0 +1,83 @@
+'use strict'
+var EventManager = require('../lib/eventManager')
+
+class breakpointManager {
+  constructor (_debugger) {
+    this.event = new EventManager()
+    this.debugger = _debugger
+    this.breakpoints = {}
+    this.isPlaying = false
+    this.breakpointHits = {}
+  }
+
+  async play () {
+    if (this.hasBreakpoint()) {
+      this.isPlaying = true
+      var sourceLocation
+      for (var currentStep = this.debugger.currentStepIndex; currentStep < this.debugger.traceManager.trace.length; currentStep++) {
+        try {
+          sourceLocation = await this.debugger.callTree.extractSourceLocation(currentStep)
+        } catch (e) {
+          console.log('cannot jump to breakpoint ' + e.message)
+        }
+        if (this.checkSourceLocation(sourceLocation)) {
+          this.debugger.stepManager.jumpTo(currentStep)
+          this.event.trigger('breakpointHit', [sourceLocation])
+          break
+        }
+      }
+    }
+  }
+
+  checkSourceLocation (sourceLocation) {
+    if (this.breakpoints[sourceLocation.file]) {
+      var sources = this.breakpoints[sourceLocation.file]
+      for (var k in sources) {
+        var source = sources[k]
+        if (sourceLocation.start >= source.start &&
+          sourceLocation.start < source.end &&
+          (this.breakpointHits[source.file][source.row] === this.debugger.currentStepIndex || this.breakpointHits[source.file][source.row] === -1)) {
+          this.breakpointHits[source.file][source.row] = this.debugger.currentStepIndex
+          return true
+        }
+      }
+    }
+    return false
+  }
+
+  hasBreakpoint () {
+    for (var k in this.breakpoints) {
+      if (this.breakpoints[k].length) {
+        return true
+      }
+    }
+    return false
+  }
+
+  add (sourceLocation) {
+    if (!this.breakpoints[sourceLocation.file]) {
+      this.breakpoints[sourceLocation.file] = []
+    }
+    this.breakpoints[sourceLocation.file].push(sourceLocation)
+    if (!this.breakpointHits[sourceLocation.file]) {
+      this.breakpointHits[sourceLocation.file] = {}
+    }
+    this.breakpointHits[sourceLocation.file][sourceLocation.row] = -1
+  }
+
+  remove (sourceLocation) {
+    if (this.breakpoints[sourceLocation.file]) {
+      var sources = this.breakpoints[sourceLocation.file]
+      for (var k in sources) {
+        var source = sources[k]
+        if (sourceLocation.start === source.start && sourceLocation.length === source.length) {
+          sources.splice(k, 1)
+          this.breakpointHits[sourceLocation.file][source.row] = undefined
+          break
+        }
+      }
+    }
+  }
+}
+
+module.exports = breakpointManager