/*
* $Id: PrintStatement.java,v 1.19 2002/09/16 08:05:06 jkl Exp $
*
* Copyright (c) 2002 Njet Communications Ltd. All Rights Reserved.
*
* Use is subject to license terms, as defined in
* Anvil Sofware License, Version 1.1. See LICENSE
* file, or http://njet.org/license-1.1.txt
*/
package anvil.script.statements;
import anvil.core.Any;
import anvil.Location;
import anvil.parser.Tag;
import anvil.codec.Code;
import anvil.ErrorListener;
import anvil.script.compiler.ByteCompiler;
import anvil.script.Context;
import anvil.script.expression.Node;
import anvil.script.expression.Expression;
import anvil.script.expression.ExpressionList;
import anvil.script.parser.TemplateParser;
import anvil.script.parser.ExpressionParser;
import anvil.script.Grammar;
import anvil.util.Conversions;
import java.io.IOException;
/**
* class PrintStatement
*
* @author: Jani Lehtim�ki
*/
public class PrintStatement extends Statement
{
protected Expression[] _expressions = null;
protected Converter _converters = new Converter();
protected int _conversions = 0;
protected boolean _newline = false;
public PrintStatement(Statement parent, Location location)
{
super(parent, location);
}
public PrintStatement(Statement parent, Location location, Expression[] expressions, boolean newline)
{
super(parent, location);
_expressions = expressions;
_newline = newline;
}
public PrintStatement(Statement parent, Location location, Expression expr)
{
super(parent, location);
_expressions = new Expression[] { expr };
}
public int typeOf()
{
return ST_PRINT;
}
public String name()
{
return "print";
}
public String toString()
{
StringBuffer buffer = new StringBuffer();
final int n = _expressions.length;
buffer.append(_newline ? "println " : "print");
for(int i=0; i<n; i++) {
if (i>0) {
buffer.append(", ");
}
buffer.append(_expressions[i].toString());
}
buffer.append(';');
return buffer.toString();
}
public void parse(TemplateParser parser, Tag tag)
{
String expr = tag.getValue("value");
if (expr != null) {
ExpressionParser p = new ExpressionParser(parser, getLocation(), expr);
ExpressionList list = p.parseExpressionList();
int n = list.childs();
_expressions = new Expression[n];
for(int i=0; i<n; i++) {
_expressions[i] = new Expression(list.getChild(i), getLocation());
}
}
int n = tag.getLength();
String name;
for(int i=0; i<n; i++) {
name = tag.getName(i);
if (name.equalsIgnoreCase("quote")) {
_conversions++;
_converters = new HtmlConverter(_converters);
} else if (name.equalsIgnoreCase("meta")) {
_conversions++;
_converters = new MetaConverter(_converters);
} else if (name.equalsIgnoreCase("text")) {
_conversions++;
_converters = new TextConverter(_converters);
} else if (name.equalsIgnoreCase("nowrap")) {
_conversions++;
_converters = new NoWrapConverter(_converters);
} else if (name.equalsIgnoreCase("nl2br")) {
_conversions++;
_converters = new NewlineToBreakConverter(_converters);
} else if (name.equalsIgnoreCase("compress")) {
_conversions++;
_converters = new CompressConverter(_converters);
} else if (name.equalsIgnoreCase("caps")) {
_conversions++;
_converters = new CapitalizeConverter(_converters);
} else if (name.equalsIgnoreCase("capsfirst")) {
_conversions++;
_converters = new CapitalizeFirstConverter(_converters);
} else if (name.equalsIgnoreCase("encode")) {
_conversions++;
_converters = new URLEncodeConverter(_converters);
} else if (name.equalsIgnoreCase("decode")) {
_conversions++;
_converters = new URLDecodeConverter(_converters);
} else if (name.equalsIgnoreCase("uppercase")) {
_conversions++;
_converters = new UpperCaseConverter(_converters);
} else if (name.equalsIgnoreCase("lowercase")) {
_conversions++;
_converters = new LowerCaseConverter(_converters);
} else if (name.equalsIgnoreCase("trim")) {
_conversions++;
_converters = new TrimConverter(_converters);
}
}
}
public void check(ErrorListener context)
{
if (_expressions != null) {
int n = _expressions.length;
for(int i=0; i<n; i++) {
_expressions[i].check(context);
}
}
}
public void compile(ByteCompiler context)
{
Code code = context.getCode();
if (_expressions != null) {
Expression expr;
int n = _expressions.length;
if (n>0) {
for(int i=0; i<n; i++) {
expr = _expressions[i];
boolean newline = _newline && i==n-1;
if (expr.isConstant()) {
context.text(code, _converters.convert(expr.constant().toString()), newline);
} else {
if (expr.needLineNumbers()) {
context.location(expr.getLocation());
}
code.aload_first();
if (_conversions == 0) {
expr.compile(context, Expression.GET);
code.invokevirtual(code.getPool().addMethodRef(context.TYPE_CONTEXT,
newline ? "println" : "print" , "(Lanvil/core/Any;)V"));
} else {
_converters.compile(context, expr);
code.invokevirtual(code.getPool().addMethodRef(context.TYPE_CONTEXT,
newline ? "println" : "print" , "(Ljava/lang/String;)V"));
}
}
}
} else if (_newline) {
code.aload_first();
code.invokevirtual(code.getPool().addMethodRef(context.TYPE_CONTEXT, "println", "()V"));
}
}
}
public void onCharacters(TemplateParser parser, String cdata)
{
//ignore
}
public boolean onTag(TemplateParser parser, int type, Tag tag)
{
return false;
}
protected class Converter {
protected Converter _converter;
protected Converter()
{
_converter = null;
}
protected Converter(Converter converter)
{
_converter = converter;
}
protected String convert(String value)
{
return value;
}
protected void compile(ByteCompiler context, Expression expr)
{
expr.compile(context, Node.GET);
context.getCode().invokevirtual(context.getPool().addMethodRef(
"java/lang/Object", "toString", "()Ljava/lang/String;"));
}
}
protected class HtmlConverter extends Converter {
protected HtmlConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.encodeEntities(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "encodeEntities", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class MetaConverter extends Converter {
protected MetaConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.encodeMetaEntities(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "encodeMetaEntities", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class TextConverter extends Converter {
protected TextConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.encodeText(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "encodeText", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class NoWrapConverter extends Converter {
protected NoWrapConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.nowrap(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "nowrap", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class NewlineToBreakConverter extends Converter {
protected NewlineToBreakConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.nl2br(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "nl2br", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class CompressConverter extends Converter {
protected CompressConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.compress(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "compress", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class CapitalizeConverter extends Converter {
protected CapitalizeConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.capitalizeAllWords(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "capitalizeAllWords", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class CapitalizeFirstConverter extends Converter {
protected CapitalizeFirstConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.capitalizeFirstWord(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "capitalizeFirstWord", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class URLEncodeConverter extends Converter {
protected URLEncodeConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.URLEncode(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "URLEncode", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class URLDecodeConverter extends Converter {
protected URLDecodeConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return Conversions.URLDecode(_converter.convert(value));
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokestatic(context.getPool().addMethodRef(
"anvil/util/Conversions", "URLDecode", "(Ljava/lang/String;)Ljava/lang/String;"));
}
}
protected class UpperCaseConverter extends Converter {
protected UpperCaseConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return _converter.convert(value).toUpperCase();
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokevirtual(context.getPool().addMethodRef(
"java/lang/String", "toUpperCase", "()Ljava/lang/String;"));
}
}
protected class LowerCaseConverter extends Converter {
protected LowerCaseConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return _converter.convert(value).toLowerCase();
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokevirtual(context.getPool().addMethodRef(
"java/lang/String", "toLowerCase", "()Ljava/lang/String;"));
}
}
protected class TrimConverter extends Converter {
protected TrimConverter(Converter converter)
{
super(converter);
}
protected String convert(String value)
{
return _converter.convert(value).trim();
}
protected void compile(ByteCompiler context, Expression expr)
{
_converter.compile(context, expr);
context.getCode().invokevirtual(context.getPool().addMethodRef(
"java/lang/String", "trim", "()Ljava/lang/String;"));
}
}
}