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Remote Debugging Protocol: Difference between revisions
[whitespace af248e3] Remove trailing whitespace, to placate git.
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| (void 0) | | (void 0) | ||
| { "type":"undefined" } | | { "type":"undefined" } | ||
|- | |- | ||
| ({x:1}) | | ({x:1}) | ||
| { "type":"object", "class":"Object", "actor":"24" } | | { "type":"object", "class":"Object", "actor":"24" } | ||
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{ "from":<i>thread</i>, "type":"detached" } | { "from":<i>thread</i>, "type":"detached" } | ||
This indicates that the client has detached from the thread. The thread is now in the <b>Detached</b> state: it can run freely, and no longer reports events to the client. Communications with <i>thread</i> are closed, and the actor name is available for reuse. If the thread had been in the <b>Paused</b> state, the pause actor is closed (because the pause actor is a child of <i>thread</i>). | This indicates that the client has detached from the thread. The thread is now in the <b>Detached</b> state: it can run freely, and no longer reports events to the client. Communications with <i>thread</i> are closed, and the actor name is available for reuse. If the thread had been in the <b>Paused</b> state, the pause actor is closed (because the pause actor is a child of <i>thread</i>). | ||
{ "from":<i>thread</i>, "type":"paused", ... } | { "from":<i>thread</i>, "type":"paused", ... } | ||
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where: | where: | ||
* <i>location</i> is the source location of the current point of execution in the global code (see [[#Source_Locations|Source Locations]]); | * <i>location</i> is the source location of the current point of execution in the global code (see [[#Source_Locations|Source Locations]]); | ||
* <i>environment</i> is a value representing the lexical environment of the current point of execution (see [[#Lexical_Environments|Lexical Environments]]); | * <i>environment</i> is a value representing the lexical environment of the current point of execution (see [[#Lexical_Environments|Lexical Environments]]); | ||
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A frame for an ordinary JavaScript function call has the form: | A frame for an ordinary JavaScript function call has the form: | ||
{ "actor":<i>actor</i>, "depth":<i>depth</i>, "type":"call", "this":<i>this</i>, | { "actor":<i>actor</i>, "depth":<i>depth</i>, "type":"call", "this":<i>this</i>, | ||
"where":<i>location</i>, "environment":<i>environment</i>, | "where":<i>location</i>, "environment":<i>environment</i>, | ||
"callee":<i>callee</i>, "calleeName":<i>calleeName</i>, "arguments":<i>arguments</i> } | "callee":<i>callee</i>, "calleeName":<i>calleeName</i>, "arguments":<i>arguments</i> } | ||
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You can see here the three nested environment forms, starting with the <tt>environment</tt> property of the top stack frame, reported in the pause: | You can see here the three nested environment forms, starting with the <tt>environment</tt> property of the top stack frame, reported in the pause: | ||
* The first environment form shows the environment record created by the call to <tt>g</tt>, with the string <tt>"argument to g"</tt> passed as the value of <tt>y</tt>. | * The first environment form shows the environment record created by the call to <tt>g</tt>, with the string <tt>"argument to g"</tt> passed as the value of <tt>y</tt>. | ||
* Because <tt>g</tt> is nested within <tt>f</tt>, each function object generated for <tt>g</tt> captures the environment of a call to the enclosing function <tt>f</tt>. Thus, the next thing on <tt>g</tt>'s scope chain is an environment form for the call to <tt>f</tt>, where <tt>"argument to f"</tt> was passed as the vale of <tt>x</tt>. | * Because <tt>g</tt> is nested within <tt>f</tt>, each function object generated for <tt>g</tt> captures the environment of a call to the enclosing function <tt>f</tt>. Thus, the next thing on <tt>g</tt>'s scope chain is an environment form for the call to <tt>f</tt>, where <tt>"argument to f"</tt> was passed as the vale of <tt>x</tt>. | ||
* Because <tt>f</tt> is a top-level function, the (only) function object for <tt>f</tt> closes over the global object. This is the "type":"object" environment shown as the parent of <tt>f</tt>'s environment record. | * Because <tt>f</tt> is a top-level function, the (only) function object for <tt>f</tt> closes over the global object. This is the "type":"object" environment shown as the parent of <tt>f</tt>'s environment record. | ||