/**
* Copyright (C) 2013-2016 The Rythm Engine project
* for LICENSE and other details see:
* https://github.com/rythmengine/rythmengine
*/
package org.rythmengine.internal.parser.build_in;
import org.rythmengine.internal.IContext;
import org.rythmengine.internal.TemplateParser;
import org.rythmengine.internal.Token;
import org.rythmengine.internal.parser.CodeToken;
import org.rythmengine.internal.parser.RemoveLeadingLineBreakAndSpacesParser;
import org.rythmengine.utils.S;
import com.stevesoft.pat.Regex;
/**
* Free Java code parser.
* <p/>
* All code between @{ and }@ will be copied literally into target java source
*
* @author luog
*/
public class ScriptParser extends RemoveLeadingLineBreakAndSpacesParser {
private static final String PTN = "^(%s((?@{}))%s?)";
public ScriptParser(IContext context) {
super(context);
}
@Override
public Token go() {
IContext ctx = ctx();
//if (ctx.currentBlock() == null) return null;
Regex r = new Regex(String.format(PTN, a(), a()));
if (!r.search(ctx.getRemain())) return null;
if (!ctx.getDialect().enableScripting()) {
throw new TemplateParser.ScriptingDisabledException(ctx);
}
String s = r.stringMatched(1);
int curLine = ctx.currentLine();
ctx.step(s.length());
s = r.stringMatched(2);
s = s.substring(1); // strip left "{"
s = s.substring(0, s.length() - 1); // strip right "}"
r = new Regex(".*[ \\t\\n\\r\\}]+if[ \\t]*\\(.*");
boolean hasIfStatement = r.search(" " + s);
String[] lines = s.split("[\\n\\r]+");
int len = lines.length;
StringBuilder sb = new StringBuilder(s.length() * 2);
String lastLine = "";
for (int i = 0; i < len; ++i) {
String line = lines[i];
if (!S.isEmpty(line)) lastLine = line;
curLine = curLine + 1;
sb.append(line).append(" //line: ").append(curLine).append("\n");
}
if (!hasIfStatement && !lastLine.trim().endsWith(";")) sb.append(";");
String code = sb.toString();
checkRestrictedClass(code);
return new CodeToken(code, ctx);
}
public static void main(String[] args) {
String s = "adfs\n\tif (sdfs) {\n...}\n";
Regex r = new Regex(".*[ \\t\\n\\r\\}]+if[ \\t]*\\(.*");
p(s, r);
}
}