package com.jpexs.decompiler.flash.abc.avm2.model;
import com.jpexs.decompiler.flash.SourceGeneratorLocalData;
import com.jpexs.decompiler.flash.abc.ABC;
import com.jpexs.decompiler.flash.abc.avm2.AVM2ConstantPool;
import com.jpexs.decompiler.flash.abc.avm2.instructions.AVM2Instructions;
import com.jpexs.decompiler.flash.abc.avm2.parser.script.AVM2SourceGenerator;
import com.jpexs.decompiler.flash.abc.types.Namespace;
import com.jpexs.decompiler.flash.configuration.Configuration;
import com.jpexs.decompiler.flash.ecma.ArrayType;
import com.jpexs.decompiler.flash.ecma.EcmaScript;
import com.jpexs.decompiler.flash.ecma.Null;
import com.jpexs.decompiler.flash.ecma.Undefined;
import com.jpexs.decompiler.flash.helpers.GraphTextWriter;
import com.jpexs.decompiler.graph.CompilationException;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.SourceGenerator;
import com.jpexs.decompiler.graph.TypeItem;
import com.jpexs.decompiler.graph.model.Callable;
import com.jpexs.decompiler.graph.model.LocalData;
import com.jpexs.helpers.Helper;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
*
* @author JPEXS
*/
public class RegExpAvm2Item extends AVM2Item implements Callable {
public String pattern;
public String modifier;
public RegExpAvm2Item(String pattern, String modifier, GraphSourceItem instruction, GraphSourceItem lineStartIns) {
super(instruction, lineStartIns, PRECEDENCE_PRIMARY);
this.pattern = pattern;
this.modifier = modifier;
}
@Override
public boolean isCompileTime() {
return true;
}
public static String escapeRegExpString(String s) {
StringBuilder ret = new StringBuilder(s.length());
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (c == '\n') {
ret.append("\\n");
} else if (c == '\r') {
ret.append("\\r");
} else if (c == '\t') {
ret.append("\\t");
} else if (c == '\b') {
ret.append("\\b");
} else if (c == '\f') {
ret.append("\\f");
} else if (c < 32) {
ret.append("\\x").append(Helper.byteToHex((byte) c));
} else {
ret.append(c);
}
}
return ret.toString();
}
@Override
public GraphTextWriter appendTo(GraphTextWriter writer, LocalData localData) throws InterruptedException {
if (Configuration.useRegExprLiteral.get()) {
writer.append("/");
writer.append(escapeRegExpString(pattern));
writer.append("/");
writer.append(modifier);
} else {
writer.append("new RegExp(");
writer.append("\"" + Helper.escapeActionScriptString(pattern) + "\"");
if (!(modifier == null || modifier.isEmpty())) {
writer.append(",");
writer.append("\"" + modifier + "\"");
}
writer.append(")");
}
return writer;
}
@Override
public boolean hasReturnValue() {
return true;
}
@Override
public GraphTargetItem returnType() {
return new TypeItem("RegExp");
}
@Override
public List<GraphSourceItem> toSource(SourceGeneratorLocalData localData, SourceGenerator generator) throws CompilationException {
AVM2SourceGenerator g = (AVM2SourceGenerator) generator;
ABC abc = g.abcIndex.getSelectedAbc();
AVM2ConstantPool constants = abc.constants;
boolean hasModifier = !(modifier == null || modifier.isEmpty());
return toSourceMerge(localData, generator,
ins(AVM2Instructions.GetLex, constants.getQnameId("RegExp", Namespace.KIND_PACKAGE, "", true)),
new StringAVM2Item(null, null, pattern),
hasModifier ? new StringAVM2Item(null, null, modifier) : null,
ins(AVM2Instructions.Construct, hasModifier ? 2 : 1)
);
}
@Override
public Object call(String methodName, List<Object> args) {
int flags = 0;
for (char c : modifier.toCharArray()) {
switch (c) {
case 'g':
//global (??)
break;
case 'i':
flags |= Pattern.CASE_INSENSITIVE;
break;
case 's':
flags |= Pattern.DOTALL;
break;
case 'm':
flags |= Pattern.MULTILINE;
break;
case 'x':
flags |= Pattern.COMMENTS; //?
break;
default:
//?
break;
}
}
Pattern p = Pattern.compile(pattern, flags);
switch (methodName) {
case "exec":
String estr = EcmaScript.toString(args.get(0));
Matcher m = p.matcher(estr);
if (m.find()) {
List<Object> avals = new ArrayList<>();
for (int i = 0; i <= m.groupCount(); i++) {
avals.add(m.group(i));
}
ArrayType a = new ArrayType(avals);
a.setAttribute("input", estr);
a.setAttribute("index", m.start());
return a;
} else {
return Null.INSTANCE;
}
case "test":
String tstr = EcmaScript.toString(args.get(0));
return p.matcher(tstr).find(); //boolean
}
return Undefined.INSTANCE; //?
}
@Override
public Object call(List<Object> args) {
return call("exec", args);
}
}