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#0000 Review: Optimizations
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@seanox
seanox committed Aug 11, 2022
1 parent 67fb5bd commit 8994c9b
Showing 1 changed file with 24 additions and 24 deletions.
48 changes: 24 additions & 24 deletions src/main/java/com/seanox/pdf/Generator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -159,12 +159,12 @@
* produce final results that correspond to the call of {@link #set(Map)} in
* combination with {@link #extract()}, but focus on only one structure.<br>
* <br>
* Generator 4.1.0 20220803<br>
* Generator 4.1.0 20220811<br>
* Copyright (C) 2022 Seanox Software Solutions<br>
* Alle Rechte vorbehalten.
*
* @author Seanox Software Solutions
* @version 4.1.0 20220803
* @version 4.1.0 20220811
*/
class Generator {

Expand Down Expand Up @@ -215,7 +215,7 @@ private Generator() {
* @return the generator with the template passed as bytes
*/
static Generator parse(byte[] model) {
Generator generator = new Generator();
final var generator = new Generator();
generator.model = generator.scan(model);
return generator;
}
Expand Down Expand Up @@ -246,14 +246,14 @@ private static int scan(byte[] model, int cursor) {
|| model[cursor +1] != '[')
return 0;

int offset = cursor;
int deep = 0;
var offset = cursor;
var deep = 0;

int[] stack = new int[65535];
var stack = new int[65535];
while (cursor < model.length) {

// The current mode is determined.
int mode = deep > 0 ? Math.abs(stack[deep]) : 0;
var mode = deep > 0 ? Math.abs(stack[deep]) : 0;

// Phase 0-1: Recognition of the start of a placeholder
// - supported formats: #[...], #[...[[...]]], #[...{{...}}]
Expand Down Expand Up @@ -306,7 +306,7 @@ private static int scan(byte[] model, int cursor) {
// completed.
if (cursor +2 < model.length
&& mode == 2) {
int symbol = mode == 2 ? stack[deep] > 0 ? ']' : '}' : 0;
final var symbol = mode == 2 ? stack[deep] > 0 ? ']' : '}' : 0;
if (model[cursor +0] == symbol
&& model[cursor +1] == symbol
&& model[cursor +2] == ']') {
Expand Down Expand Up @@ -351,27 +351,27 @@ private byte[] scan(byte[] model) {
if (model == null)
return new byte[0];

int cursor = 0;
var cursor = 0;
while (true) {
int offset = Generator.scan(model, cursor++);
var offset = Generator.scan(model, cursor++);
if (offset < 0)
break;
if (offset == 0)
continue;

cursor--;

byte[] patch = new byte[0];
String fetch = new String(model, cursor, offset);
var patch = new byte[0];
var fetch = new String(model, cursor, offset);
if (fetch.matches(TEXT_PATTERN_PLACEHOLDER_STRUCTURE)) {

// scope is determined from: #[scope[[structure]]
String scope = fetch.substring(2);
var scope = fetch.substring(2);
scope = scope.substring(0, scope.indexOf('['));
scope = scope.toLowerCase();

// structure is extracted from the model
byte[] cache = new byte[offset -scope.length() -7];
final var cache = new byte[offset -scope.length() -7];
System.arraycopy(model, cursor +scope.length() +4, cache, 0, cache.length);

// scope and structure are registered if scope does not exist
Expand All @@ -384,12 +384,12 @@ private byte[] scan(byte[] model) {
} else if (fetch.matches(TEXT_PATTERN_PLACEHOLDER_STRUCTURE_DISPOSABLE)) {

// scope is determined from: #[scope{{structure}}]
String scope = fetch.substring(2);
var scope = fetch.substring(2);
scope = scope.substring(0, scope.indexOf('{'));
scope = scope.toLowerCase();

// structure is extracted from the model
byte[] cache = new byte[offset - scope.length() - 7];
final var cache = new byte[offset - scope.length() - 7];
System.arraycopy(model, cursor + scope.length() + 4, cache, 0, cache.length);

// unique scope is registered with the structure
Expand Down Expand Up @@ -426,7 +426,7 @@ private byte[] scan(byte[] model) {
}

// model is rebuilt with the patch
byte[] cache = new byte[model.length -offset +patch.length];
final var cache = new byte[model.length -offset +patch.length];
System.arraycopy(model, 0, cache, 0, cursor);
System.arraycopy(patch, 0, cache, cursor, patch.length);
System.arraycopy(model, cursor +offset, cache, cursor +patch.length, model.length -cursor -offset);
Expand Down Expand Up @@ -459,7 +459,7 @@ private byte[] assemble(String scope, Map<String, Object> values) {

// Internally, a copy of the generator is created for the structure
// (partial model) and thus partially filled.
Generator generator = new Generator();
final var generator = new Generator();
generator.scopes = (HashMap)this.scopes.clone();
generator.scopes.remove(scope);
generator.model = this.scopes.get(scope).data;
Expand Down Expand Up @@ -519,7 +519,7 @@ private byte[] assemble(String scope, Map<String, Object> values, boolean clean)

int cursor = 0;
while (true) {
int offset = Generator.scan(this.model, cursor++);
final var offset = Generator.scan(this.model, cursor++);
if (offset < 0)
break;
if (offset == 0)
Expand All @@ -536,7 +536,7 @@ private byte[] assemble(String scope, Map<String, Object> values, boolean clean)

// the placeholders of not transmitted keys are ignored, with
// 'clean' the placeholders are deleted
String key = scope.replaceAll(":\\d+$", "");
final var key = scope.replaceAll(":\\d+$", "");
if (!values.containsKey(key)
&& !clean) {
cursor += scope.length() +3 +1;
Expand Down Expand Up @@ -587,7 +587,7 @@ private byte[] assemble(String scope, Map<String, Object> values, boolean clean)

// if necessary the # characters are encoded to protect the
// placeholders and structure in the model
int index = 0;
var index = 0;
while (index < patch.length) {
if (patch[index++] != '#')
continue;
Expand Down Expand Up @@ -721,15 +721,15 @@ private Structure(byte[] data) {

this.data = data;

int cursor = 0;
var cursor = 0;
while (true) {
int offset = Generator.scan(data, cursor++);
final var offset = Generator.scan(data, cursor++);
if (offset < 0)
break;
if (offset == 0)
continue;
cursor--;
String fetch = new String(data, cursor, offset);
final var fetch = new String(data, cursor, offset);
if (!fetch.matches(TEXT_PATTERN_PLACEHOLDER_STRUCTURE)
&& !fetch.matches(TEXT_PATTERN_PLACEHOLDER_STRUCTURE_DISPOSABLE)
&& !fetch.matches(TEXT_PATTERN_PLACEHOLDER_VALUE)) {
Expand Down

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