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Added caching of global symbols. Results in faster compilation.

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This commit is contained in:
jespergravgaard 2020-04-09 22:38:30 +02:00
parent 096d7c0640
commit 8dac19aca0
2 changed files with 16 additions and 5 deletions
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20
src/main/java/dk/camelot64/kickc/model/symbols/ProgramScope.java
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@ -7,16 +7,21 @@ import dk.camelot64.kickc.model.types.SymbolType;
import dk.camelot64.kickc.model.types.SymbolTypeProgram;
import dk.camelot64.kickc.model.values.*;
import java.util.Arrays;
import java.util.Deque;
import java.util.LinkedList;
import java.util.*;
/** The program scope containing the symbols of a program */
public class ProgramScope extends Scope {
/** Caches the global symbols for fast lookup. */
private Map<String, Symbol> cachedGlobalSymbols;
public ProgramScope() {
super("", null, Scope.SEGMENT_DATA_DEFAULT);
cachedGlobalSymbols = new HashMap<>();
}
public void clearCache() {
this.cachedGlobalSymbols = new HashMap<>();
}
@Override
@ -24,7 +29,6 @@ public class ProgramScope extends Scope {
return new SymbolTypeProgram();
}
/**
* Get a symbol from it's full name.
*
@ -32,6 +36,9 @@ public class ProgramScope extends Scope {
* @return The symbol. Null if not found.
*/
public Symbol getGlobalSymbol(String fullName) {
final Symbol cachedSymbol = cachedGlobalSymbols.get(fullName);
if(cachedSymbol != null)
return cachedSymbol;
final Deque<String> names = new LinkedList<>(Arrays.asList(fullName.split("::")));
Scope scope = this;
while(names.size() > 1) {
@ -40,7 +47,10 @@ public class ProgramScope extends Scope {
if(scope == null)
return null;
}
return scope.getLocalSymbol(names.removeFirst());
final Symbol symbol = scope.getLocalSymbol(names.removeFirst());
if(symbol != null)
cachedGlobalSymbols.put(fullName, symbol);
return symbol;
}
public Symbol getSymbol(SymbolRef symbolRef) {

1
src/main/java/dk/camelot64/kickc/model/symbols/Scope.java
View File

@ -99,6 +99,7 @@ public abstract class Scope implements Symbol, Serializable {
public void remove(Symbol symbol) {
symbols.remove(symbol.getLocalName());
getProgramScope().clearCache();
}