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ANTLR Tool Source Code
ANTLR is a powerful parser generator for multiple programming languages including Java.
ANTLR contains 2 major modules:
ANTLR Tool Source Code files are provided in the distribution packge (antlr4-4.10.1.zip). You can download them at ANTLR Website.
You can also browse the source code below:
✍: FYIcenter
⏎ org/antlr/v4/tool/AttributeDict.java
/* * Copyright (c) 2012-2017 The ANTLR Project. All rights reserved. * Use of this file is governed by the BSD 3-clause license that * can be found in the LICENSE.txt file in the project root. */ package org.antlr.v4.tool; import org.antlr.v4.runtime.Token; import org.antlr.v4.tool.ast.GrammarAST; import java.util.Collections; import java.util.HashSet; import java.util.LinkedHashMap; import java.util.Set; /** Track the attributes within retval, arg lists etc... * <p> * Each rule has potentially 3 scopes: return values, * parameters, and an implicitly-named scope (i.e., a scope defined in a rule). * Implicitly-defined scopes are named after the rule; rules and scopes then * must live in the same name space--no collisions allowed. */ public class AttributeDict { public String name; public GrammarAST ast; public DictType type; /** All {@link Token} scopes (token labels) share the same fixed scope of * of predefined attributes. I keep this out of the {@link Token} * interface to avoid a runtime type leakage. */ public static final AttributeDict predefinedTokenDict = new AttributeDict(DictType.TOKEN); static { predefinedTokenDict.add(new Attribute("text")); predefinedTokenDict.add(new Attribute("type")); predefinedTokenDict.add(new Attribute("line")); predefinedTokenDict.add(new Attribute("index")); predefinedTokenDict.add(new Attribute("pos")); predefinedTokenDict.add(new Attribute("channel")); predefinedTokenDict.add(new Attribute("int")); } public enum DictType { ARG, RET, LOCAL, TOKEN, PREDEFINED_RULE, PREDEFINED_LEXER_RULE, } /** The list of {@link Attribute} objects. */ public final LinkedHashMap<String, Attribute> attributes = new LinkedHashMap<String, Attribute>(); public AttributeDict() {} public AttributeDict(DictType type) { this.type = type; } public Attribute add(Attribute a) { a.dict = this; return attributes.put(a.name, a); } public Attribute get(String name) { return attributes.get(name); } public String getName() { return name; } public int size() { return attributes.size(); } /** Return the set of keys that collide from * {@code this} and {@code other}. */ public Set<String> intersection(AttributeDict other) { if ( other==null || other.size()==0 || size()==0 ) { return Collections.emptySet(); } Set<String> result = new HashSet<String>(attributes.keySet()); result.retainAll(other.attributes.keySet()); return result; } @Override public String toString() { return getName()+":"+attributes; } }
⏎ org/antlr/v4/tool/AttributeDict.java
Or download all of them as a single archive file:
File name: antlr-tool-4.10.1-sources.jar File size: 347718 bytes Release date: 2022-04-15 Download
2022-04-24, 26794👍, 0💬
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