/**
* 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.IParser;
import org.rythmengine.internal.Keyword;
import org.rythmengine.internal.Token;
import org.rythmengine.internal.parser.RemoveLeadingLineBreakAndSpacesParser;
import org.rythmengine.utils.S;
import org.rythmengine.utils.TextBuilder;
import com.stevesoft.pat.Regex;
/**
* Parse @exec("myMacro")
*/
public class ExecParser extends KeywordParserFactory {
private static final String R = "(^\\n?[ \\t\\x0B\\f]*%s(%s\\s*((?@()))\\s*))";
public ExecParser() {
}
protected String patternStr() {
return R;
}
public IParser create(final IContext ctx) {
return new RemoveLeadingLineBreakAndSpacesParser(ctx) {
public Token go() {
Regex r = reg(dialect());
if (!r.search(remain())) {
raiseParseException("Error parsing @exec statement. Correct usage: @exec(myMacro)");
}
final int curLine = ctx().currentLine();
final String matched = r.stringMatched();
step(matched.length());
if (matched.startsWith("\n") || matched.endsWith("\n")) {
ctx.getCodeBuilder().addBuilder(new Token.StringToken("\n", ctx));
Regex r0 = new Regex("\\n([ \\t\\x0B\\f]*).*");
if (r0.search(matched)) {
String blank = r0.stringMatched(1);
if (blank.length() > 0) {
ctx.getCodeBuilder().addBuilder(new Token.StringToken(blank, ctx));
}
}
} else {
Regex r0 = new Regex("([ \\t\\x0B\\f]*).*");
if (r0.search(matched)) {
String blank = r0.stringMatched(1);
if (blank.length() > 0) {
ctx.getCodeBuilder().addBuilder(new Token.StringToken(blank, ctx));
}
}
}
String s = r.stringMatched(3);
if (S.isEmpty(s)) {
raiseParseException("Error parsing @exec statement. Correct usage: @exec(\"my-macro\")");
}
final String macro = S.stripBraceAndQuotation(s);
return new ExecMacroToken(macro, ctx(), curLine);
}
};
}
@Override
public Keyword keyword() {
return Keyword.EXEC;
}
}