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added a statement cache

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This commit is contained in:
hneemann 2019-07-11 09:33:10 +02:00
parent 470b8f19a9
commit e0b8254f54
2 changed files with 50 additions and 16 deletions
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20
src/main/java/de/neemann/digital/draw/library/ElementTypeDescriptionCustom.java
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@ -25,7 +25,6 @@ import de.neemann.digital.lang.Lang;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.TreeSet;
/**
@ -36,7 +35,7 @@ public final class ElementTypeDescriptionCustom extends ElementTypeDescription {
private static final int MAX_DEPTH = 30;
private final File file;
private final Circuit circuit;
private final HashMap<String, Statement> map;
private final StatementCache statementCache;
private String description;
private NetList netList;
private boolean isCustom = true;
@ -53,7 +52,7 @@ public final class ElementTypeDescriptionCustom extends ElementTypeDescription {
super(file.getName(), (ElementFactory) null, circuit.getInputNames());
this.file = file;
this.circuit = circuit;
map = new HashMap<>();
statementCache=new StatementCache();
setShortName(file.getName());
addAttribute(Keys.ROTATE);
addAttribute(Keys.LABEL);
@ -130,10 +129,8 @@ public final class ElementTypeDescriptionCustom extends ElementTypeDescription {
if (args == null) {
String argsCode = containingVisualElement.getElementAttributes().get(Keys.GENERIC);
try {
Statement s = getStatement(argsCode);
Statement s = statementCache.getStatement(argsCode);
args = new Context();
if (containingVisualElement.getGenericArgs() != null)
args.declareVar("args", containingVisualElement.getGenericArgs());
s.execute(args);
} catch (HGSEvalException | ParserException | IOException e) {
final NodeException ex = new NodeException(Lang.get("err_evaluatingGenericsCode_N_N", containingVisualElement, argsCode), e);
@ -150,7 +147,7 @@ public final class ElementTypeDescriptionCustom extends ElementTypeDescription {
try {
if (!gen.isEmpty()) {
boolean isCustom = library.getElementType(ve.getElementName(), ve.getElementAttributes()).isCustom();
Statement genS = getStatement(gen);
Statement genS = statementCache.getStatement(gen);
if (isCustom) {
Context mod = new Context()
.declareVar("args", args)
@ -182,15 +179,6 @@ public final class ElementTypeDescriptionCustom extends ElementTypeDescription {
return new ModelCreator(circuit, library, true, new NetList(netList, errorVisualElement), subName, depth, errorVisualElement);
}
private Statement getStatement(String code) throws IOException, ParserException {
Statement genS = map.get(code);
if (genS == null) {
genS = new Parser(code).parse(false);
map.put(code, genS);
}
return genS;
}
@Override
public boolean isCustom() {
return isCustom;

46
src/main/java/de/neemann/digital/draw/library/StatementCache.java Normal file
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@ -0,0 +1,46 @@
/*
* Copyright (c) 2019 Helmut Neemann.
* Use of this source code is governed by the GPL v3 license
* that can be found in the LICENSE file.
*/
package de.neemann.digital.draw.library;
import de.neemann.digital.hdl.hgs.Parser;
import de.neemann.digital.hdl.hgs.ParserException;
import de.neemann.digital.hdl.hgs.Statement;
import java.io.IOException;
import java.util.HashMap;
/**
* Implements a cache for statements
*/
public class StatementCache {
private final HashMap<String, Statement> map;
/**
* Creates a new instance
*/
public StatementCache() {
map = new HashMap<>();
}
/**
* Gets the analysed statements.
* If the statements are not present in the cache, they are generated.
*
* @param code the code
* @return the statements
* @throws IOException IOException
* @throws ParserException ParserException
*/
public Statement getStatement(String code) throws IOException, ParserException {
Statement genS = map.get(code);
if (genS == null) {
genS = new Parser(code).parse(false);
map.put(code, genS);
}
return genS;
}
}