Package org.mozilla.javascript.optimizer
Class Codegen
java.lang.Object
org.mozilla.javascript.optimizer.Codegen
- All Implemented Interfaces:
Evaluator
This class generates code for a given IR tree.
- Author:
- Norris Boyd, Roger Lawrence
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
Capture stack information from the given exception.compile
(CompilerEnvirons compilerEnv, ScriptNode tree, String rawSource, boolean returnFunction) Compile the script or function from intermediate representation tree into an executable form.byte[]
compileToClassFile
(CompilerEnvirons compilerEnv, String mainClassName, ScriptNode scriptOrFn, String rawSource, boolean returnFunction) createFunctionObject
(Context cx, Scriptable scope, Object bytecode, Object staticSecurityDomain) Create a function object.createScriptObject
(Object bytecode, Object staticSecurityDomain) Create a script object.getPatchedStack
(RhinoException ex, String nativeStackTrace) Given a native stack trace, patch it with script-specific source and line informationGet the script stack for the given exceptiongetSourcePositionFromStack
(Context cx, int[] linep) Get the source position information by examining the stack.void
setEvalScriptFlag
(Script script) Mark the given script to indicate it was created by a call to eval() or to a Function constructor.void
setMainMethodClass
(String className)
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Constructor Details
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Codegen
public Codegen()
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Method Details
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captureStackInfo
Description copied from interface:Evaluator
Capture stack information from the given exception.- Specified by:
captureStackInfo
in interfaceEvaluator
- Parameters:
ex
- an exception thrown during execution
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getSourcePositionFromStack
Description copied from interface:Evaluator
Get the source position information by examining the stack.- Specified by:
getSourcePositionFromStack
in interfaceEvaluator
- Parameters:
cx
- Contextlinep
- Array object of length >= 1; getSourcePositionFromStack will assign the line number to linep[0].- Returns:
- the name of the file or other source container
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getPatchedStack
Description copied from interface:Evaluator
Given a native stack trace, patch it with script-specific source and line information- Specified by:
getPatchedStack
in interfaceEvaluator
- Parameters:
ex
- exceptionnativeStackTrace
- the native stack trace- Returns:
- patched stack trace
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getScriptStack
Description copied from interface:Evaluator
Get the script stack for the given exception- Specified by:
getScriptStack
in interfaceEvaluator
- Parameters:
ex
- exception from execution- Returns:
- list of strings for the stack trace
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setEvalScriptFlag
Description copied from interface:Evaluator
Mark the given script to indicate it was created by a call to eval() or to a Function constructor.- Specified by:
setEvalScriptFlag
in interfaceEvaluator
- Parameters:
script
- script to mark as from eval
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compile
public Object compile(CompilerEnvirons compilerEnv, ScriptNode tree, String rawSource, boolean returnFunction) Description copied from interface:Evaluator
Compile the script or function from intermediate representation tree into an executable form.- Specified by:
compile
in interfaceEvaluator
- Parameters:
compilerEnv
- Compiler environmenttree
- parse treerawSource
- the source codereturnFunction
- if true, compiling a function- Returns:
- an opaque object that can be passed to either createFunctionObject or createScriptObject, depending on the value of returnFunction
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createScriptObject
Description copied from interface:Evaluator
Create a script object.- Specified by:
createScriptObject
in interfaceEvaluator
- Parameters:
bytecode
- opaque object returned by compilestaticSecurityDomain
- security domain- Returns:
- Script object that can be evaluated
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createFunctionObject
public Function createFunctionObject(Context cx, Scriptable scope, Object bytecode, Object staticSecurityDomain) Description copied from interface:Evaluator
Create a function object.- Specified by:
createFunctionObject
in interfaceEvaluator
- Parameters:
cx
- Current contextscope
- scope of the functionbytecode
- opaque object returned by compilestaticSecurityDomain
- security domain- Returns:
- Function object that can be called
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compileToClassFile
public byte[] compileToClassFile(CompilerEnvirons compilerEnv, String mainClassName, ScriptNode scriptOrFn, String rawSource, boolean returnFunction) -
setMainMethodClass
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