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antlr
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merge sam's pulls

This commit is contained in:
Terence Parr 2012-09-04 18:59:20 -07:00
parent a0563656f7 dd12508f5d
commit 201db8b6d0
4 changed files with 88 additions and 44 deletions
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21
runtime/Java/src/org/antlr/v4/runtime/ParserRuleContext.java
View File

@ -28,10 +28,7 @@
*/
package org.antlr.v4.runtime;
import org.antlr.v4.runtime.atn.ATN;
import org.antlr.v4.runtime.atn.ATNState;
import org.antlr.v4.runtime.misc.Interval;
import org.antlr.v4.runtime.misc.NotNull;
import org.antlr.v4.runtime.misc.Nullable;
import org.antlr.v4.runtime.tree.ErrorNode;
import org.antlr.v4.runtime.tree.ErrorNodeImpl;
@ -297,24 +294,6 @@ public class ParserRuleContext<Symbol extends Token> extends RuleContext {
public Symbol getStart() { return start; }
public Symbol getStop() { return stop; }
@Override
public String toString(@NotNull Recognizer<?,?> recog, RuleContext stop) {
if ( recog==null ) return super.toString(recog, stop);
StringBuilder buf = new StringBuilder();
RuleContext p = this;
buf.append("[");
String[] ruleNames = recog.getRuleNames();
while ( p != null && p != stop ) {
int ruleIndex = p.getRuleIndex();
String ruleName = ruleIndex >= 0 && ruleIndex < ruleNames.length ? ruleNames[ruleIndex] : Integer.toString(ruleIndex);
buf.append(ruleName);
if ( p.parent != null ) buf.append(" ");
p = p.parent;
}
buf.append("]");
return buf.toString();
}
/** Used for rule context info debugging during parse-time, not so much for ATN debugging */
public String toInfoString(Parser recognizer) {
List<String> rules = recognizer.getRuleInvocationStack(this);

49
runtime/Java/src/org/antlr/v4/runtime/RuleContext.java
View File

@ -38,6 +38,8 @@ import org.antlr.v4.runtime.tree.gui.TreeViewer;
import javax.print.PrintException;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
/** A rule context is a record of a single rule invocation. It knows
* which context invoked it, if any. If there is no parent context, then
@ -290,32 +292,65 @@ public class RuleContext implements RuleNode {
* (root child1 .. childN). Print just a node if this is a leaf.
* We have to know the recognizer so we can get rule names.
*/
public String toStringTree(Parser recog) {
public String toStringTree(@Nullable Parser recog) {
return Trees.toStringTree(this, recog);
}
/** Print out a whole tree, not just a node, in LISP format
* (root child1 .. childN). Print just a node if this is a leaf.
*/
public String toStringTree(@Nullable List<String> ruleNames) {
return Trees.toStringTree(this, ruleNames);
}
@Override
public String toStringTree() { return toStringTree(null); }
public String toStringTree() {
return toStringTree((List<String>)null);
}
@Override
public String toString() {
return toString(null);
return toString((List<String>)null, (RuleContext)null);
}
public String toString(@Nullable Recognizer<?,?> recog) {
public final String toString(@Nullable Recognizer<?,?> recog) {
return toString(recog, ParserRuleContext.EMPTY);
}
public final String toString(@Nullable List<String> ruleNames) {
return toString(ruleNames, null);
}
// recog null unless ParserRuleContext, in which case we use subclass toString(...)
public String toString(@Nullable Recognizer<?,?> recog, RuleContext stop) {
public String toString(@Nullable Recognizer<?,?> recog, @Nullable RuleContext stop) {
String[] ruleNames = recog != null ? recog.getRuleNames() : null;
List<String> ruleNamesList = ruleNames != null ? Arrays.asList(ruleNames) : null;
return toString(ruleNamesList, stop);
}
public String toString(@Nullable List<String> ruleNames, @Nullable RuleContext stop) {
StringBuilder buf = new StringBuilder();
RuleContext p = this;
buf.append("[");
while (p != null && p != stop) {
if ( !p.isEmpty() ) buf.append(p.invokingState);
if ( p.parent != null && !p.parent.isEmpty() ) buf.append(" ");
if (ruleNames == null) {
if (!p.isEmpty()) {
buf.append(p.invokingState);
}
}
else {
int ruleIndex = p.getRuleIndex();
String ruleName = ruleIndex >= 0 && ruleIndex < ruleNames.size() ? ruleNames.get(ruleIndex) : Integer.toString(ruleIndex);
buf.append(ruleName);
}
if (p.parent != null && (ruleNames != null || !p.parent.isEmpty())) {
buf.append(" ");
}
p = p.parent;
}
buf.append("]");
return buf.toString();
}

42
runtime/Java/src/org/antlr/v4/runtime/tree/Trees.java
View File

@ -32,6 +32,7 @@ package org.antlr.v4.runtime.tree;
import org.antlr.v4.runtime.Parser;
import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.misc.NotNull;
import org.antlr.v4.runtime.misc.Nullable;
import org.antlr.v4.runtime.misc.Utils;
import org.antlr.v4.runtime.tree.gui.TreePostScriptGenerator;
@ -39,6 +40,7 @@ import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
@ -75,31 +77,55 @@ public class Trees {
writePS(t, recog, fileName, "Helvetica", 11);
}
/** Print out a whole tree in LISP form. getNodeText is used on the
/** Print out a whole tree in LISP form. {@link #getNodeText} is used on the
* node payloads to get the text for the nodes. Detect
* parse trees and extract data appropriately.
*/
public static String toStringTree(Tree t, Parser recog) {
String s = Utils.escapeWhitespace(getNodeText(t, recog), false);
public static String toStringTree(@NotNull Tree t) {
return toStringTree(t, (List<String>)null);
}
/** Print out a whole tree in LISP form. {@link #getNodeText} is used on the
* node payloads to get the text for the nodes. Detect
* parse trees and extract data appropriately.
*/
public static String toStringTree(@NotNull Tree t, @Nullable Parser recog) {
String[] ruleNames = recog != null ? recog.getRuleNames() : null;
List<String> ruleNamesList = ruleNames != null ? Arrays.asList(ruleNames) : null;
return toStringTree(t, ruleNamesList);
}
/** Print out a whole tree in LISP form. {@link #getNodeText} is used on the
* node payloads to get the text for the nodes. Detect
* parse trees and extract data appropriately.
*/
public static String toStringTree(@NotNull Tree t, @Nullable List<String> ruleNames) {
String s = Utils.escapeWhitespace(getNodeText(t, ruleNames), false);
if ( t.getChildCount()==0 ) return s;
StringBuilder buf = new StringBuilder();
buf.append("(");
s = Utils.escapeWhitespace(getNodeText(t, recog), false);
s = Utils.escapeWhitespace(getNodeText(t, ruleNames), false);
buf.append(s);
buf.append(' ');
for (int i = 0; i<t.getChildCount(); i++) {
if ( i>0 ) buf.append(' ');
buf.append(toStringTree(t.getChild(i), recog));
buf.append(toStringTree(t.getChild(i), ruleNames));
}
buf.append(")");
return buf.toString();
}
public static String getNodeText(Tree t, Parser recog) {
if ( recog!=null ) {
public static String getNodeText(@NotNull Tree t, @Nullable Parser recog) {
String[] ruleNames = recog != null ? recog.getRuleNames() : null;
List<String> ruleNamesList = ruleNames != null ? Arrays.asList(ruleNames) : null;
return getNodeText(t, ruleNamesList);
}
public static String getNodeText(@NotNull Tree t, @Nullable List<String> ruleNames) {
if ( ruleNames!=null ) {
if ( t instanceof RuleNode ) {
int ruleIndex = ((RuleNode)t).getRuleContext().getRuleIndex();
String ruleName = recog.getRuleNames()[ruleIndex];
String ruleName = ruleNames.get(ruleIndex);
return ruleName;
}
else if ( t instanceof ErrorNode) {

16
tool/playground/T.g
View File

@ -1,10 +1,14 @@
grammar T;
s : e ';' ;
options
{
output=AST;
backtrack=true;
}
e : e '+' e
| INT
;
Integer : '0' .. '9';
INT : [0-9]+ ;
WS : [ \r\n\t]+ -> skip ;
myID : Integer*;
public json : myID+ -> ^(myID);