mirror of https://github.com/octoleo/plantuml.git
217 lines
6.6 KiB
Java
217 lines
6.6 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2024, Arnaud Roques
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*
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* Project Info: https://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* https://plantuml.com/patreon (only 1$ per month!)
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* https://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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*
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*/
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package net.sourceforge.plantuml.tim;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import net.sourceforge.plantuml.text.StringLocated;
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import net.sourceforge.plantuml.text.TLineType;
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import net.sourceforge.plantuml.tim.expression.TValue;
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import net.sourceforge.plantuml.utils.LineLocation;
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public class TFunctionImpl implements TFunction {
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private final TFunctionSignature signature;
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private final List<TFunctionArgument> args;
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private final List<StringLocated> body = new ArrayList<>();
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private final boolean unquoted;
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private /* final */ TFunctionType functionType;// = TFunctionType.VOID;
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private String legacyDefinition;
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private boolean containsReturn;
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public TFunctionImpl(String functionName, List<TFunctionArgument> args, boolean unquoted,
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TFunctionType functionType) {
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final Set<String> names = new HashSet<>();
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for (TFunctionArgument tmp : args)
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names.add(tmp.getName());
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this.signature = new TFunctionSignature(functionName, args.size(), names);
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this.args = args;
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this.unquoted = unquoted;
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this.functionType = functionType;
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}
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@Override
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public boolean canCover(int nbArg, Set<String> namedArguments) {
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for (String n : namedArguments)
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if (signature.getNamedArguments().contains(n) == false)
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return false;
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if (nbArg > args.size())
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return false;
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assert nbArg <= args.size();
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int neededArgument = 0;
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for (TFunctionArgument arg : args) {
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if (namedArguments.contains(arg.getName()))
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continue;
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if (arg.getOptionalDefaultValue() == null)
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neededArgument++;
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}
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if (nbArg < neededArgument)
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return false;
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assert nbArg >= neededArgument;
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return true;
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}
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private TMemory getNewMemory(TMemory memory, List<TValue> values, Map<String, TValue> namedArguments) {
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final Map<String, TValue> result = new HashMap<String, TValue>();
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int ivalue = 0;
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for (TFunctionArgument arg : args) {
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final TValue value;
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if (namedArguments.containsKey(arg.getName())) {
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value = namedArguments.get(arg.getName());
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} else if (ivalue < values.size()) {
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value = values.get(ivalue);
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ivalue++;
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} else {
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value = arg.getOptionalDefaultValue();
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}
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if (value == null)
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throw new IllegalStateException();
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result.put(arg.getName(), value);
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}
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return memory.forkFromGlobal(result);
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}
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@Override
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public String toString() {
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return "FUNCTION " + signature + " " + args;
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}
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public void addBody(StringLocated s) throws EaterExceptionLocated {
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body.add(s);
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if (s.getType() == TLineType.RETURN) {
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this.containsReturn = true;
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if (functionType == TFunctionType.PROCEDURE)
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throw EaterExceptionLocated
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.located("A procedure cannot have !return directive. Declare it as a function instead ?", s);
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}
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}
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@Override
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public void executeProcedureInternal(TContext context, TMemory memory, StringLocated location, List<TValue> args,
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Map<String, TValue> named) throws EaterExceptionLocated {
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if (functionType != TFunctionType.PROCEDURE && functionType != TFunctionType.LEGACY_DEFINELONG)
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throw new IllegalStateException();
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final TMemory copy = getNewMemory(memory, args, named);
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context.executeLines(copy, body, TFunctionType.PROCEDURE, false);
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}
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@Override
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public TValue executeReturnFunction(TContext context, TMemory memory, StringLocated location, List<TValue> args,
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Map<String, TValue> named) throws EaterExceptionLocated {
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if (functionType == TFunctionType.LEGACY_DEFINE)
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return executeReturnLegacyDefine(location.getLocation(), context, memory, args);
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if (functionType != TFunctionType.RETURN_FUNCTION)
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throw EaterExceptionLocated.unlocated("Illegal call here. Is there a return directive in your function?",
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location);
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final TMemory copy = getNewMemory(memory, args, named);
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final TValue result = context.executeLines(copy, body, TFunctionType.RETURN_FUNCTION, true);
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if (result == null)
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throw EaterExceptionLocated.unlocated("No return directive found in your function", location);
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return result;
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}
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private TValue executeReturnLegacyDefine(LineLocation location, TContext context, TMemory memory, List<TValue> args)
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throws EaterExceptionLocated {
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if (legacyDefinition == null)
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throw new IllegalStateException();
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final TMemory copy = getNewMemory(memory, args, Collections.<String, TValue>emptyMap());
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final String tmp = context.applyFunctionsAndVariables(copy, new StringLocated(legacyDefinition, location));
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if (tmp == null)
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return TValue.fromString("");
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return TValue.fromString(tmp);
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// eaterReturn.execute(context, copy);
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// // System.err.println("s3=" + eaterReturn.getValue2());
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// return eaterReturn.getValue2();
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}
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public final TFunctionType getFunctionType() {
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return functionType;
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}
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public final TFunctionSignature getSignature() {
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return signature;
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}
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// public void setFunctionType(TFunctionType type) {
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// this.functionType = type;
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// }
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public void setLegacyDefinition(String legacyDefinition) {
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this.legacyDefinition = legacyDefinition;
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}
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public boolean isUnquoted() {
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return unquoted;
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}
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public boolean hasBody() {
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return body.size() > 0;
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}
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public void finalizeEnddefinelong() {
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if (functionType != TFunctionType.LEGACY_DEFINELONG)
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throw new UnsupportedOperationException();
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if (body.size() == 1) {
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this.functionType = TFunctionType.LEGACY_DEFINE;
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this.legacyDefinition = body.get(0).getString();
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}
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}
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public final boolean doesContainReturn() {
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return containsReturn;
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}
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}
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