类 BaseTreeAdaptor
- java.lang.Object
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- org.antlr.runtime.tree.BaseTreeAdaptor
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- 所有已实现的接口:
TreeAdaptor
- 直接已知子类:
CommonTreeAdaptor
public abstract class BaseTreeAdaptor extends java.lang.Object implements TreeAdaptor
A TreeAdaptor that works with any Tree implementation.
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字段概要
字段 修饰符和类型 字段 说明 protected java.util.Map<java.lang.Object,java.lang.Integer>
treeToUniqueIDMap
System.identityHashCode() is not always unique; we have to track ourselves.protected int
uniqueNodeID
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构造器概要
构造器 构造器 说明 BaseTreeAdaptor()
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方法概要
所有方法 实例方法 抽象方法 具体方法 修饰符和类型 方法 说明 void
addChild(java.lang.Object t, java.lang.Object child)
Add a child to the tree t.java.lang.Object
becomeRoot(java.lang.Object newRoot, java.lang.Object oldRoot)
If oldRoot is a nil root, just copy or move the children to newRoot.java.lang.Object
becomeRoot(Token newRoot, java.lang.Object oldRoot)
Create a node for newRoot make it the root of oldRoot.java.lang.Object
create(int tokenType, java.lang.String text)
Create a new node derived from a token, with a new token type.java.lang.Object
create(int tokenType, Token fromToken)
Create a new node derived from a token, with a new token type.java.lang.Object
create(int tokenType, Token fromToken, java.lang.String text)
Same as create(tokenType,fromToken) except set the text too.abstract Token
createToken(int tokenType, java.lang.String text)
Tell me how to create a token for use with imaginary token nodes.abstract Token
createToken(Token fromToken)
Tell me how to create a token for use with imaginary token nodes.java.lang.Object
deleteChild(java.lang.Object t, int i)
Remove ith child and shift children down from right.java.lang.Object
dupTree(java.lang.Object tree)
Duplicate tree recursively, using dupNode() for each nodejava.lang.Object
dupTree(java.lang.Object t, java.lang.Object parent)
This is generic in the sense that it will work with any kind of tree (not just Tree interface).java.lang.Object
errorNode(TokenStream input, Token start, Token stop, RecognitionException e)
create tree node that holds the start and stop tokens associated with an error.java.lang.Object
getChild(java.lang.Object t, int i)
Get a child 0..n-1 nodeint
getChildCount(java.lang.Object t)
How many children? If 0, then this is a leaf nodejava.lang.String
getText(java.lang.Object t)
int
getType(java.lang.Object t)
For tree parsing, I need to know the token type of a nodeint
getUniqueID(java.lang.Object node)
For identifying trees.boolean
isNil(java.lang.Object tree)
Is tree considered a nil node used to make lists of child nodes?java.lang.Object
nil()
Return a nil node (an empty but non-null node) that can hold a list of element as the children.java.lang.Object
rulePostProcessing(java.lang.Object root)
Transform ^(nil x) to x and nil to nullvoid
setChild(java.lang.Object t, int i, java.lang.Object child)
Set ith child (0..n-1) to t; t must be non-null and non-nil nodevoid
setText(java.lang.Object t, java.lang.String text)
Node constructors can set the text of a nodevoid
setType(java.lang.Object t, int type)
Node constructors can set the type of a node-
从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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从接口继承的方法 org.antlr.runtime.tree.TreeAdaptor
create, dupNode, getChildIndex, getParent, getToken, getTokenStartIndex, getTokenStopIndex, replaceChildren, setChildIndex, setParent, setTokenBoundaries
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字段详细资料
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treeToUniqueIDMap
protected java.util.Map<java.lang.Object,java.lang.Integer> treeToUniqueIDMap
System.identityHashCode() is not always unique; we have to track ourselves. That's ok, it's only for debugging, though it's expensive: we have to create a hashtable with all tree nodes in it.
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uniqueNodeID
protected int uniqueNodeID
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方法详细资料
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nil
public java.lang.Object nil()
从接口复制的说明:TreeAdaptor
Return a nil node (an empty but non-null node) that can hold a list of element as the children. If you want a flat tree (a list) use "t=adaptor.nil(); t.addChild(x); t.addChild(y);"- 指定者:
nil
在接口中TreeAdaptor
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errorNode
public java.lang.Object errorNode(TokenStream input, Token start, Token stop, RecognitionException e)
create tree node that holds the start and stop tokens associated with an error. If you specify your own kind of tree nodes, you will likely have to override this method. CommonTree returns Token.INVALID_TOKEN_TYPE if no token payload but you might have to set token type for diff node type. You don't have to subclass CommonErrorNode; you will likely need to subclass your own tree node class to avoid class cast exception.- 指定者:
errorNode
在接口中TreeAdaptor
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isNil
public boolean isNil(java.lang.Object tree)
从接口复制的说明:TreeAdaptor
Is tree considered a nil node used to make lists of child nodes?- 指定者:
isNil
在接口中TreeAdaptor
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dupTree
public java.lang.Object dupTree(java.lang.Object tree)
从接口复制的说明:TreeAdaptor
Duplicate tree recursively, using dupNode() for each node- 指定者:
dupTree
在接口中TreeAdaptor
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dupTree
public java.lang.Object dupTree(java.lang.Object t, java.lang.Object parent)
This is generic in the sense that it will work with any kind of tree (not just Tree interface). It invokes the adaptor routines not the tree node routines to do the construction.
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addChild
public void addChild(java.lang.Object t, java.lang.Object child)
Add a child to the tree t. If child is a flat tree (a list), make all in list children of t. Warning: if t has no children, but child does and child isNil then you can decide it is ok to move children to t via t.children = child.children; i.e., without copying the array. Just make sure that this is consistent with have the user will build ASTs.- 指定者:
addChild
在接口中TreeAdaptor
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becomeRoot
public java.lang.Object becomeRoot(java.lang.Object newRoot, java.lang.Object oldRoot)
If oldRoot is a nil root, just copy or move the children to newRoot. If not a nil root, make oldRoot a child of newRoot. old=^(nil a b c), new=r yields ^(r a b c) old=^(a b c), new=r yields ^(r ^(a b c)) If newRoot is a nil-rooted single child tree, use the single child as the new root node. old=^(nil a b c), new=^(nil r) yields ^(r a b c) old=^(a b c), new=^(nil r) yields ^(r ^(a b c)) If oldRoot was null, it's ok, just return newRoot (even if isNil). old=null, new=r yields r old=null, new=^(nil r) yields ^(nil r) Return newRoot. Throw an exception if newRoot is not a simple node or nil root with a single child node--it must be a root node. If newRoot is ^(nil x) return x as newRoot. Be advised that it's ok for newRoot to point at oldRoot's children; i.e., you don't have to copy the list. We are constructing these nodes so we should have this control for efficiency.- 指定者:
becomeRoot
在接口中TreeAdaptor
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rulePostProcessing
public java.lang.Object rulePostProcessing(java.lang.Object root)
Transform ^(nil x) to x and nil to null- 指定者:
rulePostProcessing
在接口中TreeAdaptor
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becomeRoot
public java.lang.Object becomeRoot(Token newRoot, java.lang.Object oldRoot)
从接口复制的说明:TreeAdaptor
Create a node for newRoot make it the root of oldRoot. If oldRoot is a nil root, just copy or move the children to newRoot. If not a nil root, make oldRoot a child of newRoot. Return node created for newRoot. Be advised: when debugging ASTs, the DebugTreeAdaptor manually calls create(Token child) and then plain becomeRoot(node, node) because it needs to trap calls to create, but it can't since it delegates to not inherits from the TreeAdaptor.- 指定者:
becomeRoot
在接口中TreeAdaptor
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create
public java.lang.Object create(int tokenType, Token fromToken)
从接口复制的说明:TreeAdaptor
Create a new node derived from a token, with a new token type. This is invoked from an imaginary node ref on right side of a rewrite rule as IMAG[$tokenLabel]. This should invoke createToken(Token).- 指定者:
create
在接口中TreeAdaptor
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create
public java.lang.Object create(int tokenType, Token fromToken, java.lang.String text)
从接口复制的说明:TreeAdaptor
Same as create(tokenType,fromToken) except set the text too. This is invoked from an imaginary node ref on right side of a rewrite rule as IMAG[$tokenLabel, "IMAG"]. This should invoke createToken(Token).- 指定者:
create
在接口中TreeAdaptor
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create
public java.lang.Object create(int tokenType, java.lang.String text)
从接口复制的说明:TreeAdaptor
Create a new node derived from a token, with a new token type. This is invoked from an imaginary node ref on right side of a rewrite rule as IMAG["IMAG"]. This should invoke createToken(int,String).- 指定者:
create
在接口中TreeAdaptor
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getType
public int getType(java.lang.Object t)
从接口复制的说明:TreeAdaptor
For tree parsing, I need to know the token type of a node- 指定者:
getType
在接口中TreeAdaptor
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setType
public void setType(java.lang.Object t, int type)
从接口复制的说明:TreeAdaptor
Node constructors can set the type of a node- 指定者:
setType
在接口中TreeAdaptor
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getText
public java.lang.String getText(java.lang.Object t)
- 指定者:
getText
在接口中TreeAdaptor
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setText
public void setText(java.lang.Object t, java.lang.String text)
从接口复制的说明:TreeAdaptor
Node constructors can set the text of a node- 指定者:
setText
在接口中TreeAdaptor
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getChild
public java.lang.Object getChild(java.lang.Object t, int i)
从接口复制的说明:TreeAdaptor
Get a child 0..n-1 node- 指定者:
getChild
在接口中TreeAdaptor
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setChild
public void setChild(java.lang.Object t, int i, java.lang.Object child)
从接口复制的说明:TreeAdaptor
Set ith child (0..n-1) to t; t must be non-null and non-nil node- 指定者:
setChild
在接口中TreeAdaptor
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deleteChild
public java.lang.Object deleteChild(java.lang.Object t, int i)
从接口复制的说明:TreeAdaptor
Remove ith child and shift children down from right.- 指定者:
deleteChild
在接口中TreeAdaptor
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getChildCount
public int getChildCount(java.lang.Object t)
从接口复制的说明:TreeAdaptor
How many children? If 0, then this is a leaf node- 指定者:
getChildCount
在接口中TreeAdaptor
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getUniqueID
public int getUniqueID(java.lang.Object node)
从接口复制的说明:TreeAdaptor
For identifying trees. How to identify nodes so we can say "add node to a prior node"? Even becomeRoot is an issue. Use System.identityHashCode(node) usually.- 指定者:
getUniqueID
在接口中TreeAdaptor
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createToken
public abstract Token createToken(int tokenType, java.lang.String text)
Tell me how to create a token for use with imaginary token nodes. For example, there is probably no input symbol associated with imaginary token DECL, but you need to create it as a payload or whatever for the DECL node as in ^(DECL type ID). If you care what the token payload objects' type is, you should override this method and any other createToken variant.
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createToken
public abstract Token createToken(Token fromToken)
Tell me how to create a token for use with imaginary token nodes. For example, there is probably no input symbol associated with imaginary token DECL, but you need to create it as a payload or whatever for the DECL node as in ^(DECL type ID). This is a variant of createToken where the new token is derived from an actual real input token. Typically this is for converting '{' tokens to BLOCK etc... You'll see r : lc='{' ID+ '}' -> ^(BLOCK[$lc] ID+) ; If you care what the token payload objects' type is, you should override this method and any other createToken variant.
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