?? resolveids.java
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * This file is part of SableCC. * * See the file "LICENSE" for copyright information and the * * terms and conditions for copying, distribution and * * modification of SableCC. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */package org.sablecc.sablecc;import org.sablecc.sablecc.analysis.*;import org.sablecc.sablecc.node.*;import java.util.*;import java.io.*;public class ResolveIds extends DepthFirstAdapter{ public final Map helpers = new TypedTreeMap( StringComparator.instance, StringCast.instance, NodeCast.instance); public final Map states = new TypedTreeMap( StringComparator.instance, StringCast.instance, NodeCast.instance); public final Map tokens = new TypedTreeMap( StringComparator.instance, StringCast.instance, NodeCast.instance); public final Map ignTokens = new TypedTreeMap( StringComparator.instance, StringCast.instance, NodeCast.instance); public final Map prods = new TypedTreeMap( StringComparator.instance, StringCast.instance, NodeCast.instance); public final Map alts = new TypedTreeMap( StringComparator.instance, StringCast.instance, NodeCast.instance); public final Map elems = new TypedTreeMap( StringComparator.instance, StringCast.instance, NodeCast.instance); public final Map names = new TypedHashMap( NodeCast.instance, StringCast.instance); public final Map errorNames = new TypedHashMap( NodeCast.instance, StringCast.instance); public final Map elemTypes = new TypedHashMap( NodeCast.instance, StringCast.instance); public final Map fixedTokens = new TypedHashMap( NodeCast.instance, BooleanCast.instance); public final List tokenList = new TypedLinkedList(StringCast.instance); public final LinkedList stateList = new TypedLinkedList(StringCast.instance); public File pkgDir; public String pkgName = ""; private boolean processingStates; private boolean processingIgnTokens; String currentProd; String currentAlt; private int lastLine; private int lastPos; public ResolveIds(File currentDir) { pkgDir = currentDir; } public void inAPkgName(APkgName node) { pkgName = node.getPkgId().getText(); pkgDir = new File(pkgDir, node.getPkgId().getText()); if(!pkgDir.exists()) { if(!pkgDir.mkdir()) { throw new RuntimeException("Unable to create " + pkgDir.getAbsolutePath()); } } } public void inAPkgNameTail(APkgNameTail node) { pkgName += "." + node.getPkgId().getText(); pkgDir = new File(pkgDir, node.getPkgId().getText()); if(!pkgDir.exists()) { if(!pkgDir.mkdir()) { throw new RuntimeException("Unable to create " + pkgDir.getAbsolutePath()); } } } public void caseAIdBasic(AIdBasic node) { String name = node.getId().getText(); if(helpers.get(name) == null) { error2(node.getId(), name); } } public void outAHelperDef(AHelperDef node) { String name = node.getId().getText(); if(helpers.put(name, node) != null) { error(node.getId(), name); } names.put(node, name); } public void outATokenDef(ATokenDef node) { String name = "T" + name(node.getId().getText()); String errorName = errorName(node.getId().getText()); if(tokens.put(name, node) != null) { error(node.getId(), name); } names.put(node, name); errorNames.put(node, errorName); tokenList.add(name); } public void inAStates(AStates node) { processingStates = true; } public void outAStates(AStates node) { processingStates = false; } public void inAIgnTokens(AIgnTokens node) { processingIgnTokens = true; } public void outAIgnTokens(AIgnTokens node) { processingIgnTokens = false; } public void inAIdList(AIdList node) { if(processingStates) { String name = node.getId().getText().toUpperCase(); if(states.put(name, node.getId()) != null) { error(node.getId(), name); } names.put(node.getId(), name); stateList.add(name); } if(processingIgnTokens) { String name = "T" + name(node.getId().getText()); if(tokens.get(name) == null) { error2(node.getId(), name); } if(ignTokens.put(name, node.getId()) != null) { error(node.getId(), name); } names.put(node.getId(), name); } } public void inAIdListTail(AIdListTail node) { if(processingStates) { String name = node.getId().getText().toUpperCase(); if(states.put(name, node.getId()) != null) { error(node.getId(), name); } names.put(node.getId(), name); stateList.add(name); } if(processingIgnTokens) { String name = "T" + name(node.getId().getText()); if(tokens.get(name) == null) { error2(node.getId(), name); } if(ignTokens.put(name, node.getId()) != null) { error(node.getId(), name); } names.put(node.getId(), name); } } private Map stateMap; public void inAStateList(AStateList node) { stateMap = new TypedTreeMap( StringComparator.instance, StringCast.instance, NodeCast.instance); String name = node.getId().getText().toUpperCase(); if(states.get(name) == null) { error2(node.getId(), name); } if(stateMap.put(name, node) != null) { error(node.getId(), name); } } public void outAStateList(AStateList node) { stateMap = null; } public void inAStateListTail(AStateListTail node) { String name = node.getId().getText().toUpperCase(); if(states.get(name) == null) { error2(node.getId(), name); } if(stateMap.put(name, node) != null) { error(node.getId(), name); } } public void inATransition(ATransition node) { String name = node.getId().getText().toUpperCase(); if(states.get(name) == null) { error2(node.getId(), name); } } public void inAProd(AProd node) { currentProd = name(node.getId().getText()); String name = "P" + currentProd; if(prods.put(name, node) != null) { error(node.getId(), name); } names.put(node, name); } public void inAParsedAlt(AParsedAlt alt) { if(alt.getAltName() != null) { currentAlt = "A" + name(((AAltName) alt.getAltName()).getId().getText()) + currentProd; if(alts.put(currentAlt, alt) != null) { error(((AAltName) alt.getAltName()).getId(), currentAlt); } names.put(alt, currentAlt); } else { currentAlt = "A" + currentProd; if(alts.put(currentAlt, alt) != null) { error(currentAlt); } names.put(alt, currentAlt); } } public void inAIgnoredAlt (AIgnoredAlt alt) { if(alt.getAltName() != null) { currentAlt = "A" + name(((AAltName) alt.getAltName()).getId().getText()) + currentProd; if(alts.put(currentAlt, alt) != null) { error(((AAltName) alt.getAltName()).getId(), currentAlt); } names.put(alt, currentAlt); } else { currentAlt = "A" + currentProd; if(alts.put(currentAlt, alt) != null) { } names.put(alt, currentAlt); } } public void inALookAhead(ALookAhead node) { Token token = (Token) node.getSlash(); throw new RuntimeException( "[" + token.getLine() + "," + token.getPos() + "] " + "Look ahead not yet supported."); } public void caseAElem(AElem elem) { if(elem.getElemName() != null) { String name = currentAlt + "." + name(((AElemName)elem.getElemName()).getId().getText()); if(elems.put(name, elem) != null) { error(((AElemName)elem.getElemName()).getId(), name); } if(((AElemName)elem.getElemName()).getId().getText().equals("class")) { error5(((AElemName)elem.getElemName()).getId()); } names.put(elem, name(((AElemName)elem.getElemName()).getId().getText())); } else { String name = currentAlt + "." + name(elem.getId().getText()); if(elems.put(name, elem) != null) { error(elem.getId(), name); } if(elem.getId().getText().equals("class")) { error5(elem.getId()); } names.put(elem, name(elem.getId().getText())); } } public void outAProductions(AProductions prod) { prod.apply(new DepthFirstAdapter() { public void caseAElem(AElem node) { String name = name(node.getId().getText()); if(node.getSpecifier() != null) { if(node.getSpecifier() instanceof ATokenSpecifier) { if(tokens.get("T" + name) == null) { error2(node.getId(), "T" + name); } if(ignTokens.get("T" + name) != null) { error3(node.getId(), "T" + name); } elemTypes.put(node, "T" + name); } else { if(prods.get("P" + name) == null) { error2(node.getId(), "P" + name); } elemTypes.put(node, "P" + name); } } else { Object token = tokens.get("T" + name); Object ignToken = ignTokens.get("T" + name); Object production = prods.get("P" + name); if((token == null) && (production == null)) { error2(node.getId(), "P" + name + " and T" + name); } if(token != null) { if(production != null) { error4(node.getId(), "P" + name + " and T" + name); } if(ignToken != null) { error3(node.getId(), "T" + name); } elemTypes.put(node, "T" + name); } else { elemTypes.put(node, "P" + name); } } } } ); } public void defaultcase(Node node) { if(node instanceof Token) { Token t = (Token) node; lastLine = t.getLine(); lastPos = t.getPos() + t.getText().length(); } } public static String name(String s) { StringBuffer result = new StringBuffer(); boolean upcase = true; int length = s.length(); char c; for(int i = 0; i < length; i++) { c = s.charAt(i); switch(c) { case '_': upcase = true; break; default: if(upcase) { result.append(Character.toUpperCase(c)); upcase = false; } else { result.append(c); } break; } } return result.toString(); } public static String errorName(String s) { StringBuffer result = new StringBuffer(); int length = s.length(); char c; for(int i = 0; i < length; i++) { c = s.charAt(i); switch(c) { case '_': { result.append(' '); } break; default: { result.append(c); } break; } } return result.toString(); } private static void error(Token token, String name) { throw new RuntimeException( "[" + token.getLine() + "," + token.getPos() + "] " + "Redefinition of " + name + "."); } private void error(String name) { throw new RuntimeException( "[" + lastLine + "," + lastPos + "] " + "Redefinition of " + name + "."); } private static void error2(Token token, String name) { throw new RuntimeException( "[" + token.getLine() + "," + token.getPos() + "] " + name + " undefined."); } private static void error3(Token token, String name) { throw new RuntimeException( "[" + token.getLine() + "," + token.getPos() + "] " + name + " is ignored."); } private static void error4(Token token, String name) { throw new RuntimeException( "[" + token.getLine() + "," + token.getPos() + "] " + "ambiguous " + name + "."); } private static void error5(Token token) { throw new RuntimeException( "[" + token.getLine() + "," + token.getPos() + "] " + "class is an invalid element name."); } public String toString() { StringBuffer s = new StringBuffer(); String nl = System.getProperty("line.separator"); s.append("Helpers:"); s.append(nl); s.append(helpers); s.append(nl); s.append("States:"); s.append(nl); s.append(states); s.append(nl); s.append("Tokens:"); s.append(nl); s.append(tokens); s.append(nl); s.append("Ignored Tokens:"); s.append(nl); s.append(ignTokens); s.append(nl); s.append("Productions:"); s.append(nl); s.append(prods); s.append(nl); s.append("Alternatives:"); s.append(nl); s.append(alts); s.append(nl); s.append("Elements:"); s.append(nl); s.append(elems); s.append(nl); return s.toString(); }}?? 快捷鍵說明
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