/**
* 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.*;
import org.rythmengine.internal.parser.ParserBase;
import org.rythmengine.utils.S;
import com.stevesoft.pat.Regex;
/**
* Parse @def [return-type] tagname(Type var,...) {template...}
*/
public class DefTagParser extends KeywordParserFactory {
private static class DefStaticCodeToken extends BlockToken {
String code;
DefStaticCodeToken(String body, IContext context) {
super("", context);
ctx.getCodeBuilder().addStaticCode(body);
code = body;
}
@Override
public String closeBlock() {
return "";
}
}
private static class DefClassToken extends BlockToken {
String className;
CodeBuilder.InlineClass clz;
public DefClassToken(String className, String body, IContext context) {
super("", context);
this.className = className;
clz = ctx.getCodeBuilder().defClass(className, body);
}
@Override
public void openBlock() {
}
@Override
public String closeBlock() {
return "";
}
}
private static class DefTagToken extends BlockToken {
String tagName;
String signature;
String retType;
CodeBuilder.InlineTag tag;
public DefTagToken(String tagName, String retType, String signature, String body, IContext context) {
super("", context);
this.retType = retType;
this.tagName = tagName;
this.signature = signature;
tag = ctx.getCodeBuilder().defTag(tagName, retType, signature, body);
}
@Override
public void openBlock() {
}
@Override
public String closeBlock() {
ctx.getCodeBuilder().endTag(tag);
return "";
}
}
@Override
public Keyword keyword() {
return Keyword.TAG;
}
public IParser create(final IContext ctx) {
return new ParserBase(ctx) {
private Token goClass() {
Regex r = new Regex(String.format(classPatternStr(), dialect().a(), keyword()));
if (!r.search(remain())) {
return goStaticCode();
}
final String matched = r.stringMatched();
if (matched.startsWith("\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));
}
}
}
step(matched.length());
String className = r.stringMatched(6);
r = new Regex("^(\\s*((?@{})))");
String remain = ctx.getRemain();
if (!r.search("{" + remain)) {
// short notation?
r = new Regex("^(\\s*((?@@@)))");
if (!r.search("@" + remain)) {
this.raiseParseException("code blocked expected after @def tag");
}
}
String s = r.stringMatched(1);
int curLine = ctx().currentLine();
ctx().step(s.length() - 1);
if (s.startsWith("{")) {
while (ctx().peek() != '}') ctx().step(-1);
} else {
while (ctx().peek() != '@') ctx().step(-1);
}
s = r.stringMatched(2);
s = s.substring(1); // strip left "{"
s = s.substring(0, s.length() - 1); // strip right "}"
String[] lines = s.split("[\\n\\r]+");
int len = lines.length;
StringBuilder sb = new StringBuilder(s.length() * 2);
for (int i = 0; i < len; ++i) {
String line = lines[i];
sb.append(line).append(" //line: ").append(curLine++).append("\n");
}
return new DefClassToken(className, sb.toString(), ctx());
}
private Token goStaticCode () {
Regex r = new Regex(String.format(staticCodePatternStr(), dialect().a(), keyword()));
if (!r.search(remain())) {
raiseParseException("Error parsing @def, correct usage: @def (class|[type] tagName)([arguments...])");
}
final String matched = r.stringMatched();
if (matched.startsWith("\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));
}
}
}
step(matched.length());
r = new Regex("^(\\s*((?@{})))");
String remain = ctx.getRemain();
if (!r.search("{" + remain)) {
// short notation?
r = new Regex("^(\\s*((?@@@)))");
if (!r.search("@" + remain)) {
this.raiseParseException("code blocked expected after @def tag");
}
}
String s = r.stringMatched(1);
int curLine = ctx().currentLine();
ctx().step(s.length() - 1);
if (s.startsWith("{")) {
while (ctx().peek() != '}') ctx().step(-1);
} else {
while (ctx().peek() != '@') ctx().step(-1);
}
s = r.stringMatched(2);
s = s.substring(1); // strip left "{"
s = s.substring(0, s.length() - 1); // strip right "}"
String[] lines = s.split("[\\n\\r]+");
int len = lines.length;
StringBuilder sb = new StringBuilder(s.length() * 2);
for (int i = 0; i < len; ++i) {
String line = lines[i];
sb.append(line).append(" //line: ").append(curLine++).append("\n");
}
return new DefStaticCodeToken(sb.toString(), ctx());
}
public Token go() {
Regex r = reg(dialect());
if (!r.search(remain())) {
return goClass();
}
final String matched = r.stringMatched();
if (matched.startsWith("\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));
}
}
}
step(matched.length());
String retType = r.stringMatched(3);
String tagName = r.stringMatched(6);
String signature = r.stringMatched(7);
if (null != retType && !"void".equals(retType)) {
r = new Regex("^(\\s*((?@{})))");
String remain = ctx.getRemain();
if (!r.search("{" + remain)) {
// short notation?
r = new Regex("^(\\s*((?@@@)))");
if (!r.search("@" + remain)) {
this.raiseParseException("code blocked expected after @def tag");
}
}
String s = r.stringMatched(1);
int curLine = ctx().currentLine();
ctx().step(s.length() - 1);
if (s.startsWith("{")) {
while (ctx().peek() != '}') ctx().step(-1);
} else {
while (ctx().peek() != '@') ctx().step(-1);
}
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;
sb.append(line).append(" //line: ").append(curLine++).append("\n");
}
if (!hasIfStatement && !lastLine.trim().endsWith(";")) sb.append(";");
return new DefTagToken(tagName, retType, signature, sb.toString(), ctx());
}
return new DefTagToken(tagName, retType, signature, null, ctx());
}
};
}
@Override
protected String patternStr() {
return "^\\n?[ \\t\\x0B\\f]*%s%s\\s+(([_a-zA-Z][\\w_\\.$]*(\\s*((?@<>)|(?@[])))?)\\s+)?([_a-zA-Z][\\w_$]*)\\s*((?@()))\\s*{?[ \\t\\x0B\\f]*\\n?";
}
protected String classPatternStr() {
return "^\\n?[ \\t\\x0B\\f]*%s%s\\s+class\\s+(([_a-zA-Z][\\w_\\.$]*(\\s*((?@<>)|(?@[])))?)\\s+)?([_a-zA-Z][\\w_$]*)\\s*{?[ \\t\\x0B\\f]*\\n?";
}
protected String staticCodePatternStr() {
return "^\\n?[ \\t\\x0B\\f]*%s%s\\s+static\\s*{?[ \\t\\x0B\\f]*\\n?";
}
}