类 Profiler
- java.lang.Object
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- org.antlr.runtime.debug.BlankDebugEventListener
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- org.antlr.runtime.debug.Profiler
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- 所有已实现的接口:
DebugEventListener
public class Profiler extends BlankDebugEventListener
Using the debug event interface, track what is happening in the parser and record statistics about the runtime.
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嵌套类概要
嵌套类 修饰符和类型 类 说明 static class
Profiler.DecisionDescriptor
static class
Profiler.DecisionEvent
static class
Profiler.ProfileStats
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字段概要
字段 修饰符和类型 字段 说明 protected int
backtrackDepth
protected java.util.Stack<java.lang.String>
currentGrammarFileName
protected java.util.Stack<java.lang.Integer>
currentLine
protected java.util.Stack<java.lang.Integer>
currentPos
protected java.util.Stack<java.lang.String>
currentRuleName
static java.lang.String
DATA_SEP
protected java.util.List<Profiler.DecisionEvent>
decisionEvents
protected DoubleKeyMap<java.lang.String,java.lang.Integer,Profiler.DecisionDescriptor>
decisions
protected java.util.Stack<Profiler.DecisionEvent>
decisionStack
protected Token
lastRealTokenTouchedInDecision
static java.lang.String
newline
DebugParser
parser
Ack, should not store parser; can't do remote stuff.protected int
ruleLevel
static java.lang.String
RUNTIME_STATS_FILENAME
protected java.util.Set<java.lang.String>
uniqueRules
static java.lang.String
Version
Because I may change the stats, I need to track that for later computations to be consistent.-
从接口继承的字段 org.antlr.runtime.debug.DebugEventListener
FALSE, PROTOCOL_VERSION, TRUE
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构造器概要
构造器 构造器 说明 Profiler()
Profiler(DebugParser parser)
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方法概要
所有方法 静态方法 实例方法 具体方法 修饰符和类型 方法 说明 void
beginBacktrack(int level)
Track backtracking decisions.void
consumeHiddenToken(Token token)
An off-channel input token was consumed.void
consumeToken(Token token)
An input token was consumed; matched by any kind of element.protected Profiler.DecisionEvent
currentDecision()
void
endBacktrack(int level, boolean successful)
Successful or not, track how much lookahead synpreds usevoid
enterDecision(int decisionNumber, boolean couldBacktrack)
Every decision, fixed k or arbitrary, has an enter/exit event so that a GUI can easily track what LT/consume events are associated with prediction.void
enterRule(java.lang.String grammarFileName, java.lang.String ruleName)
The parser has just entered a rule.void
examineRuleMemoization(IntStream input, int ruleIndex, int stopIndex, java.lang.String ruleName)
Track memoization; this is not part of standard debug interface but is triggered by profiling.void
exitDecision(int decisionNumber)
void
exitRule(java.lang.String grammarFileName, java.lang.String ruleName)
This is the last thing executed before leaving a rule.java.util.List<Profiler.DecisionEvent>
getDecisionEvents()
DoubleKeyMap<java.lang.String,java.lang.Integer,Profiler.DecisionDescriptor>
getDecisionStats()
java.lang.String
getDecisionStatsDump()
int
getNumberOfHiddenTokens(int i, int j)
Get num hidden tokens between i..j inclusiveProfiler.ProfileStats
getReport()
boolean
inDecision()
The parser is in a decision if the decision depth > 0.void
location(int line, int pos)
To watch a parser move through the grammar, the parser needs to inform the debugger what line/charPos it is passing in the grammar.protected java.lang.String
locationDescription()
protected java.lang.String
locationDescription(java.lang.String file, java.lang.String rule, int line, int pos)
void
LT(int i, Token t)
Track refs to lookahead if in a fixed/nonfixed decision.void
mark(int i)
The parser is going to look arbitrarily ahead; mark this location, the token stream's marker is sent in case you need it.void
memoize(IntStream input, int ruleIndex, int ruleStartIndex, java.lang.String ruleName)
Warning: doesn't track success/failure, just unique recording eventvoid
recognitionException(RecognitionException e)
A recognition exception occurred such as NoViableAltException.void
rewind()
Rewind to the input position of the last marker.void
rewind(int i)
After an arbitrairly long lookahead as with a cyclic DFA (or with any backtrack), this informs the debugger that stream should be rewound to the position associated with marker.void
semanticPredicate(boolean result, java.lang.String predicate)
A semantic predicate was evaluate with this result and action textvoid
setParser(DebugParser parser)
void
terminate()
Parsing is over; successfully or not.protected int[]
toArray(java.util.List<java.lang.Integer> a)
java.lang.String
toNotifyString()
java.lang.String
toString()
static java.lang.String
toString(Profiler.ProfileStats stats)
protected int[]
trim(int[] X, int n)
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从类继承的方法 org.antlr.runtime.debug.BlankDebugEventListener
addChild, becomeRoot, beginResync, commence, consumeNode, createNode, createNode, endResync, enterAlt, enterSubRule, errorNode, exitSubRule, LT, nilNode, setTokenBoundaries
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字段详细资料
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DATA_SEP
public static final java.lang.String DATA_SEP
- 另请参阅:
- 常量字段值
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newline
public static final java.lang.String newline
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Version
public static final java.lang.String Version
Because I may change the stats, I need to track that for later computations to be consistent.- 另请参阅:
- 常量字段值
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RUNTIME_STATS_FILENAME
public static final java.lang.String RUNTIME_STATS_FILENAME
- 另请参阅:
- 常量字段值
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parser
public DebugParser parser
Ack, should not store parser; can't do remote stuff. Well, we pass input stream around too so I guess it's ok.
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ruleLevel
protected int ruleLevel
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lastRealTokenTouchedInDecision
protected Token lastRealTokenTouchedInDecision
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uniqueRules
protected java.util.Set<java.lang.String> uniqueRules
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currentGrammarFileName
protected java.util.Stack<java.lang.String> currentGrammarFileName
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currentRuleName
protected java.util.Stack<java.lang.String> currentRuleName
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currentLine
protected java.util.Stack<java.lang.Integer> currentLine
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currentPos
protected java.util.Stack<java.lang.Integer> currentPos
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decisions
protected DoubleKeyMap<java.lang.String,java.lang.Integer,Profiler.DecisionDescriptor> decisions
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decisionEvents
protected java.util.List<Profiler.DecisionEvent> decisionEvents
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decisionStack
protected java.util.Stack<Profiler.DecisionEvent> decisionStack
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backtrackDepth
protected int backtrackDepth
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构造器详细资料
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Profiler
public Profiler()
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Profiler
public Profiler(DebugParser parser)
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方法详细资料
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enterRule
public void enterRule(java.lang.String grammarFileName, java.lang.String ruleName)
从接口复制的说明:DebugEventListener
The parser has just entered a rule. No decision has been made about which alt is predicted. This is fired AFTER init actions have been executed. Attributes are defined and available etc... The grammarFileName allows composite grammars to jump around among multiple grammar files.- 指定者:
enterRule
在接口中DebugEventListener
- 覆盖:
enterRule
在类中BlankDebugEventListener
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exitRule
public void exitRule(java.lang.String grammarFileName, java.lang.String ruleName)
从接口复制的说明:DebugEventListener
This is the last thing executed before leaving a rule. It is executed even if an exception is thrown. This is triggered after error reporting and recovery have occurred (unless the exception is not caught in this rule). This implies an "exitAlt" event. The grammarFileName allows composite grammars to jump around among multiple grammar files.- 指定者:
exitRule
在接口中DebugEventListener
- 覆盖:
exitRule
在类中BlankDebugEventListener
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examineRuleMemoization
public void examineRuleMemoization(IntStream input, int ruleIndex, int stopIndex, java.lang.String ruleName)
Track memoization; this is not part of standard debug interface but is triggered by profiling. Code gen inserts an override for this method in the recognizer, which triggers this method. Called from alreadyParsedRule().
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memoize
public void memoize(IntStream input, int ruleIndex, int ruleStartIndex, java.lang.String ruleName)
Warning: doesn't track success/failure, just unique recording event
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location
public void location(int line, int pos)
从接口复制的说明:DebugEventListener
To watch a parser move through the grammar, the parser needs to inform the debugger what line/charPos it is passing in the grammar. For now, this does not know how to switch from one grammar to the other and back for island grammars etc... This should also allow breakpoints because the debugger can stop the parser whenever it hits this line/pos.- 指定者:
location
在接口中DebugEventListener
- 覆盖:
location
在类中BlankDebugEventListener
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enterDecision
public void enterDecision(int decisionNumber, boolean couldBacktrack)
从接口复制的说明:DebugEventListener
Every decision, fixed k or arbitrary, has an enter/exit event so that a GUI can easily track what LT/consume events are associated with prediction. You will see a single enter/exit subrule but multiple enter/exit decision events, one for each loop iteration.- 指定者:
enterDecision
在接口中DebugEventListener
- 覆盖:
enterDecision
在类中BlankDebugEventListener
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exitDecision
public void exitDecision(int decisionNumber)
- 指定者:
exitDecision
在接口中DebugEventListener
- 覆盖:
exitDecision
在类中BlankDebugEventListener
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consumeToken
public void consumeToken(Token token)
从接口复制的说明:DebugEventListener
An input token was consumed; matched by any kind of element. Trigger after the token was matched by things like match(), matchAny().- 指定者:
consumeToken
在接口中DebugEventListener
- 覆盖:
consumeToken
在类中BlankDebugEventListener
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inDecision
public boolean inDecision()
The parser is in a decision if the decision depth > 0. This works for backtracking also, which can have nested decisions.
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consumeHiddenToken
public void consumeHiddenToken(Token token)
从接口复制的说明:DebugEventListener
An off-channel input token was consumed. Trigger after the token was matched by things like match(), matchAny(). (unless of course the hidden token is first stuff in the input stream).- 指定者:
consumeHiddenToken
在接口中DebugEventListener
- 覆盖:
consumeHiddenToken
在类中BlankDebugEventListener
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LT
public void LT(int i, Token t)
Track refs to lookahead if in a fixed/nonfixed decision.- 指定者:
LT
在接口中DebugEventListener
- 覆盖:
LT
在类中BlankDebugEventListener
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beginBacktrack
public void beginBacktrack(int level)
Track backtracking decisions. You'll see a fixed or cyclic decision and then a backtrack. enter rule ... enter decision LA and possibly consumes (for cyclic DFAs) begin backtrack level mark m rewind m end backtrack level, success exit decision ... exit rule- 指定者:
beginBacktrack
在接口中DebugEventListener
- 覆盖:
beginBacktrack
在类中BlankDebugEventListener
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endBacktrack
public void endBacktrack(int level, boolean successful)
Successful or not, track how much lookahead synpreds use- 指定者:
endBacktrack
在接口中DebugEventListener
- 覆盖:
endBacktrack
在类中BlankDebugEventListener
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mark
public void mark(int i)
从接口复制的说明:DebugEventListener
The parser is going to look arbitrarily ahead; mark this location, the token stream's marker is sent in case you need it.- 指定者:
mark
在接口中DebugEventListener
- 覆盖:
mark
在类中BlankDebugEventListener
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rewind
public void rewind(int i)
从接口复制的说明:DebugEventListener
After an arbitrairly long lookahead as with a cyclic DFA (or with any backtrack), this informs the debugger that stream should be rewound to the position associated with marker.- 指定者:
rewind
在接口中DebugEventListener
- 覆盖:
rewind
在类中BlankDebugEventListener
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rewind
public void rewind()
从接口复制的说明:DebugEventListener
Rewind to the input position of the last marker. Used currently only after a cyclic DFA and just before starting a sem/syn predicate to get the input position back to the start of the decision. Do not "pop" the marker off the state. mark(i) and rewind(i) should balance still.- 指定者:
rewind
在接口中DebugEventListener
- 覆盖:
rewind
在类中BlankDebugEventListener
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currentDecision
protected Profiler.DecisionEvent currentDecision()
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recognitionException
public void recognitionException(RecognitionException e)
从接口复制的说明:DebugEventListener
A recognition exception occurred such as NoViableAltException. I made this a generic event so that I can alter the exception hierachy later without having to alter all the debug objects. Upon error, the stack of enter rule/subrule must be properly unwound. If no viable alt occurs it is within an enter/exit decision, which also must be rewound. Even the rewind for each mark must be unwount. In the Java target this is pretty easy using try/finally, if a bit ugly in the generated code. The rewind is generated in DFA.predict() actually so no code needs to be generated for that. For languages w/o this "finally" feature (C++?), the target implementor will have to build an event stack or something. Across a socket for remote debugging, only the RecognitionException data fields are transmitted. The token object or whatever that caused the problem was the last object referenced by LT. The immediately preceding LT event should hold the unexpected Token or char. Here is a sample event trace for grammar: b : C ({;}A|B) // {;} is there to prevent A|B becoming a set | D ; The sequence for this rule (with no viable alt in the subrule) for input 'c c' (there are 3 tokens) is: commence LT(1) enterRule b location 7 1 enter decision 3 LT(1) exit decision 3 enterAlt1 location 7 5 LT(1) consumeToken [c/<4>,1:0] location 7 7 enterSubRule 2 enter decision 2 LT(1) LT(1) recognitionException NoViableAltException 2 1 2 exit decision 2 exitSubRule 2 beginResync LT(1) consumeToken [c/<4>,1:1] LT(1) endResync LT(-1) exitRule b terminate- 指定者:
recognitionException
在接口中DebugEventListener
- 覆盖:
recognitionException
在类中BlankDebugEventListener
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semanticPredicate
public void semanticPredicate(boolean result, java.lang.String predicate)
从接口复制的说明:DebugEventListener
A semantic predicate was evaluate with this result and action text- 指定者:
semanticPredicate
在接口中DebugEventListener
- 覆盖:
semanticPredicate
在类中BlankDebugEventListener
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terminate
public void terminate()
从接口复制的说明:DebugEventListener
Parsing is over; successfully or not. Mostly useful for telling remote debugging listeners that it's time to quit. When the rule invocation level goes to zero at the end of a rule, we are done parsing.- 指定者:
terminate
在接口中DebugEventListener
- 覆盖:
terminate
在类中BlankDebugEventListener
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setParser
public void setParser(DebugParser parser)
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toNotifyString
public java.lang.String toNotifyString()
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toString
public java.lang.String toString()
- 覆盖:
toString
在类中java.lang.Object
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getReport
public Profiler.ProfileStats getReport()
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getDecisionStats
public DoubleKeyMap<java.lang.String,java.lang.Integer,Profiler.DecisionDescriptor> getDecisionStats()
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getDecisionEvents
public java.util.List<Profiler.DecisionEvent> getDecisionEvents()
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toString
public static java.lang.String toString(Profiler.ProfileStats stats)
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getDecisionStatsDump
public java.lang.String getDecisionStatsDump()
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trim
protected int[] trim(int[] X, int n)
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toArray
protected int[] toArray(java.util.List<java.lang.Integer> a)
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getNumberOfHiddenTokens
public int getNumberOfHiddenTokens(int i, int j)
Get num hidden tokens between i..j inclusive
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locationDescription
protected java.lang.String locationDescription()
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locationDescription
protected java.lang.String locationDescription(java.lang.String file, java.lang.String rule, int line, int pos)
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