ANTLR 4 Runtime 4.13.1 · org.antlr.v4.runtime.tree.pattern.ParseTreeMatch

Modifier and Type	Field and Description
private final MultiMap<String, ParseTree>	labels This is the backing field for `getLabels()`.
private final ParseTree	mismatchedNode This is the backing field for `getMismatchedNode()`.
private final ParseTreePattern	pattern This is the backing field for `getPattern()`.
private final ParseTree	tree This is the backing field for `getTree()`.

Access	Constructor and Description
public	ParseTreeMatch(ParseTree The parse tree to match against the pattern. tree, ParseTreePattern The parse tree pattern. pattern, MultiMap<String, ParseTree> A mapping from label names to collections of `ParseTree` objects located by the tree pattern matching process. labels, ParseTree The first node which failed to match the tree pattern during the matching process. mismatchedNode) Constructs a new instance of `ParseTreeMatch` from the specified parse tree and pattern.

Method Summary

Modifier and Type	Method and Description
public ParseTree	Returns: The last `ParseTree` to match a tag with the specified label, or `null` if no parse tree matched a tag with the label. get(String The label to check. label) Get the last node associated with a specific `label`.
public List<ParseTree>	Returns: A collection of all `ParseTree` nodes matching tags with the specified `label`. If no nodes matched the label, an empty list is returned. getAll(String The label. label) Return all nodes matching a rule or token tag with the specified label.
public MultiMap<String, ParseTree>	Returns: A mapping from labels to parse tree nodes. If the parse tree pattern did not contain any rule or token tags, this map will be empty. getLabels() Return a mapping from label → [list of nodes].
public ParseTree	Returns: the node at which we first detected a mismatch, or `null` if the match was successful. getMismatchedNode() Get the node at which we first detected a mismatch.
public ParseTreePattern	Returns: The tree pattern we are matching against. getPattern() Get the tree pattern we are matching against.
public ParseTree	Returns: The `ParseTree` we are trying to match to a pattern. getTree() Get the parse tree we are trying to match to a pattern.
public boolean	Returns: `true` if the match operation succeeded; otherwise, `false`. succeeded() Gets a value indicating whether the match operation succeeded.
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll wait wait wait

Field Detail

labels	back to summary
private final MultiMap<String, ParseTree> labels This is the backing field for `getLabels()`.

mismatchedNode	back to summary
private final ParseTree mismatchedNode This is the backing field for `getMismatchedNode()`.

pattern	back to summary
private final ParseTreePattern pattern This is the backing field for `getPattern()`.

tree	back to summary
private final ParseTree tree This is the backing field for `getTree()`.

Constructor Detail

ParseTreeMatch back to summary

ParseTreeMatch	back to summary
public ParseTreeMatch(ParseTree tree, ParseTreePattern pattern, MultiMap<String, ParseTree> labels, ParseTree mismatchedNode) Constructs a new instance of `ParseTreeMatch` from the specified parse tree and pattern. Parameters tree:ParseTree The parse tree to match against the pattern. pattern:ParseTreePattern The parse tree pattern. labels:MultiMap<String, ParseTree> A mapping from label names to collections of `ParseTree` objects located by the tree pattern matching process. mismatchedNode:ParseTree The first node which failed to match the tree pattern during the matching process. Exceptions IllegalArgumentException: if `tree` is `null` if `pattern` is `null` if `labels` is `null`

public ParseTreeMatch(ParseTree tree, ParseTreePattern pattern, MultiMap<String, ParseTree> labels, ParseTree mismatchedNode)

Constructs a new instance of ParseTreeMatch from the specified parse tree and pattern.

Parameters

tree:ParseTree: The parse tree to match against the pattern.
pattern:ParseTreePattern: The parse tree pattern.
labels:MultiMap<String, ParseTree>: A mapping from label names to collections of ParseTree objects located by the tree pattern matching process.
mismatchedNode:ParseTree: The first node which failed to match the tree pattern during the matching process.

Exceptions

IllegalArgumentException:

if tree is null
if pattern is null
if labels is null

Method Detail

get back to summary

get	back to summary
public ParseTree get(String label) Get the last node associated with a specific `label`. For example, for pattern `<id:ID>`, `get("id")` returns the node matched for that `ID`. If more than one node matched the specified label, only the last is returned. If there is no node associated with the label, this returns `null`. Pattern tags like `<ID>` and `<expr>` without labels are considered to be labeled with `ID` and `expr`, respectively. Parameters label:String The label to check. Returns:ParseTree The last `ParseTree` to match a tag with the specified label, or `null` if no parse tree matched a tag with the label.

public ParseTree get(String label)

Get the last node associated with a specific label.

For example, for pattern <id:ID>, get("id") returns the node matched for that ID. If more than one node matched the specified label, only the last is returned. If there is no node associated with the label, this returns null.

Pattern tags like <ID> and <expr> without labels are considered to be labeled with ID and expr, respectively.

Parameters

label:String: The label to check.

Returns:ParseTree

The last ParseTree to match a tag with the specified label, or null if no parse tree matched a tag with the label.

getAll back to summary

getAll	back to summary
public List<ParseTree> getAll(String label) Return all nodes matching a rule or token tag with the specified label. If the `label` is the name of a parser rule or token in the grammar, the resulting list will contain both the parse trees matching rule or tags explicitly labeled with the label and the complete set of parse trees matching the labeled and unlabeled tags in the pattern for the parser rule or token. For example, if `label` is `"foo"`, the result will contain all of the following. Parse tree nodes matching tags of the form `<foo:anyRuleName>` and `<foo:AnyTokenName>`. Parse tree nodes matching tags of the form `<anyLabel:foo>`. Parse tree nodes matching tags of the form `<foo>`. Parameters label:String The label. Returns:List<ParseTree> A collection of all `ParseTree` nodes matching tags with the specified `label`. If no nodes matched the label, an empty list is returned.

public List<ParseTree> getAll(String label)

Return all nodes matching a rule or token tag with the specified label.

If the label is the name of a parser rule or token in the grammar, the resulting list will contain both the parse trees matching rule or tags explicitly labeled with the label and the complete set of parse trees matching the labeled and unlabeled tags in the pattern for the parser rule or token. For example, if label is "foo", the result will contain all of the following.

Parse tree nodes matching tags of the form <foo:anyRuleName> and <foo:AnyTokenName>.
Parse tree nodes matching tags of the form <anyLabel:foo>.
Parse tree nodes matching tags of the form <foo>.

Parameters

label:String: The label.

Returns:List<ParseTree>

A collection of all ParseTree nodes matching tags with the specified label. If no nodes matched the label, an empty list is returned.

getLabels back to summary

getLabels	back to summary
public MultiMap<String, ParseTree> getLabels() Return a mapping from label → [list of nodes]. The map includes special entries corresponding to the names of rules and tokens referenced in tags in the original pattern. For additional information, see the description of `getAll(String)`. Returns:MultiMap<String, ParseTree> A mapping from labels to parse tree nodes. If the parse tree pattern did not contain any rule or token tags, this map will be empty.

public MultiMap<String, ParseTree> getLabels()

Return a mapping from label → [list of nodes].

The map includes special entries corresponding to the names of rules and tokens referenced in tags in the original pattern. For additional information, see the description of getAll(String).

Returns:MultiMap<String, ParseTree>: A mapping from labels to parse tree nodes. If the parse tree pattern did not contain any rule or token tags, this map will be empty.

getMismatchedNode back to summary

getMismatchedNode	back to summary
public ParseTree getMismatchedNode() Get the node at which we first detected a mismatch. Returns:ParseTree the node at which we first detected a mismatch, or `null` if the match was successful.

public ParseTree getMismatchedNode()

Get the node at which we first detected a mismatch.

Returns:ParseTree: the node at which we first detected a mismatch, or null if the match was successful.

getPattern	back to summary
public ParseTreePattern getPattern() Get the tree pattern we are matching against. Returns:ParseTreePattern The tree pattern we are matching against.

getPattern

back to summary

public ParseTreePattern getPattern()

Get the tree pattern we are matching against.

Returns:ParseTreePattern: The tree pattern we are matching against.

getTree back to summary

getTree	back to summary
public ParseTree getTree() Get the parse tree we are trying to match to a pattern. Returns:ParseTree The `ParseTree` we are trying to match to a pattern.

public ParseTree getTree()

Get the parse tree we are trying to match to a pattern.

Returns:ParseTree: The ParseTree we are trying to match to a pattern.

succeeded back to summary

succeeded	back to summary
public boolean succeeded() Gets a value indicating whether the match operation succeeded. Returns:boolean `true` if the match operation succeeded; otherwise, `false`.

public boolean succeeded()

Gets a value indicating whether the match operation succeeded.

Returns:boolean: true if the match operation succeeded; otherwise, false.

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Returns:String a string representation of the object. Annotations @Override

toString

back to summary

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object.

Returns:String

a string representation of the object.

Annotations

@Override

public Class ParseTreeMatch

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