/* Generated By:JJTree: Do not edit this line. ASTLiteral.java */



package sidekick.ecmascript.parser;



import sidekick.ecmascript.parser.EcmaScript;

import sidekick.ecmascript.parser.EcmaScriptVisitor;

import sidekick.ecmascript.parser.ParseException;

import sidekick.ecmascript.parser.Token;



public class ASTLiteral extends SimpleNode {



    static public final Object NULL = new Object();



    static public final Object REGEX = new Object();



    static public final Object HTML = new Object();



    protected String tokenImage;



    protected Object value;



    public ASTLiteral(int id) {

        super(id);

    }



    public ASTLiteral(EcmaScript p, int id) {

        super(p, id);

    }



    /** Accept the visitor. * */

    @Override

    public Object jjtAccept(EcmaScriptVisitor visitor, Object data) {

        return visitor.visit(this, data);

    }



    public void setValue(Object value) {

        this.value = value;

    }



    public Object getValue() {

        return value;

    }



    public String getTokenImage() {

        return tokenImage;

    }



    static public String unescapedString(String image) {

        image = image.substring(1, image.length() - 1);



        int l = image.length();

        StringBuffer sb = new StringBuffer(l);



        /*

         *

         * \XXX - The character specified by up to three octal digits XXX

         * between 0 and 377 ( example: \251 ) \xXX - The character specified by

         * the two hexadecimal digits XX between 00 and FF ( example: \xA9 ) \

         * uXXXX - The Unicode character specified by the four hexadecimal

         * digits XXXX ( example: \u00A9 )

         */

        for (int i = 0; i < l; i++) {

            char c = image.charAt(i);

            if ((c == '\\') && (i + 1 < l)) {

                i++;

                c = image.charAt(i);

                if (c == 'n') {

                    c = '\n';

                } else if (c == 'b') {

                    c = '\b';

                } else if (c == 'f') {

                    c = '\f';

                } else if (c == 'r') {

                    c = '\r';

                } else if (c == 't') {

                    c = '\t';

                } else if (c == 'x' && l == 4) {

                    c = (char) (hexval(image.charAt(i + 1)) << 4 | hexval(image

                            .charAt(i + 1)));

                    i += 2;

                } else if (c == 'u') {

                    c = (char) (hexval(image.charAt(i + 1)) << 12

                            | hexval(image.charAt(i + 2)) << 8

                            | hexval(image.charAt(i + 3)) << 4 | hexval(image

                            .charAt(i + 4)));

                    i += 4;

                } else if ((c >= '0') && (c <= '7') && l == 4) {

                    c = (char) (octval(image.charAt(i)));

                    if ((image.length() > i) && (image.charAt(i + 1) >= '0')

                            && (image.charAt(i + 1) <= '7')) {

                        i++;

                        c = (char) ((c << 4) | octval(image.charAt(i)));

                    }

                }

            }

            sb.append(c);

        }

        return sb.toString();

    }



    static public String escapedString(String image, char quoteChar) {

        int l = image.length();

        StringBuffer sb = new StringBuffer(l);



        for (int i = 0; i < l; i++) {

            char c = image.charAt(i);



            if (c == '\n') {

                sb.append("\\n");

            } else if (c == '\r') {

                sb.append("\\r");

            } else if (c == '\b') {

                sb.append("\\b");

            } else if (c == '\f') {

                sb.append("\\f");

            } else if (c == '\t') {

                sb.append("\\t");

            } else if (c == quoteChar) {

                sb.append("\\");

                sb.append(quoteChar);

            } else {

                // PENDING(uwe): unicode escapes, hex escapes etc

                sb.append(c);

            }

        }

        return sb.toString();

    }



    public void setStringValue(String image) throws ParseException {

        tokenImage = image;



        value = ASTLiteral.unescapedString(image);



        /*

         * if (!expectActionScript) { if (value.equals("class") ||

         * value.equals("super")) { throw new ParseException( "reserved

         * identifier class or super used"); } }

         */

    }



    public void setUnquotedStringValue(String valueStr) {

        value = valueStr;



        // PENDING(uwe): clean up and other value types

        // PENDING(uwe): serious shit here -> escaping/unescaping, quotes etc

        Token token = getBeginToken();



        char quoteChar = token.image.charAt(0);

        if (quoteChar == '"') {

            token.image = "\"" + ASTLiteral.escapedString(valueStr, quoteChar)

                    + "\"";

        } else {

            token.image = "'" + ASTLiteral.escapedString(valueStr, quoteChar)

                    + "'";

        }

    }



    public void setRegexValue(String image) {

        tokenImage = image;

        value = ASTLiteral.REGEX;

    }



    public void setHtmlValue(String image) {

        tokenImage = image;

        value = ASTLiteral.HTML;

    }



    public void setDecimalValue(String image) {

        tokenImage = image;



        try {

            value = new Long(image);

        } catch (NumberFormatException e) {

            // it's a floating point

            value = new Double(image);

        }

    }



    public void setHexValue(String image) {

        tokenImage = image;



        value = new Long(Long.parseLong(image.substring(2), 16));

    }



    public void setFloatingPointValue(String image) {

        tokenImage = image;



        value = new Double(image);

    }



    public void setBooleanValue(String image) {

        tokenImage = image;



        value = new Boolean(image);



    }



    public void setNullValue() {

        value = ASTLiteral.NULL;

    }



    @Override

    public String toString() {

        return "Literal[" + value.toString() + "]";

    }



    /**

     * Overwrites <code>equals</code> from <code>Object</code>.

     *

     * @param obj

     *            a object

     * @return true if specified object equal to receiver

     * @see java.lang.Object#equals(Object)

     */

    @Override

    public boolean equals(Object obj) {

        if ((obj != null) && (obj.getClass().equals(this.getClass()))) {

            ASTLiteral other = (ASTLiteral) obj;

            boolean result = true;



            if (tokenImage != null) {

                result = tokenImage.equals(other.tokenImage);

            } else {

                result = (other.tokenImage == null);

            }



            if (result) {

                result = value.equals(other.value);

            }



            return result;

        }



        return false;

    }



    /**

     * Overwrites <code>hashCode</code> from <code>Object</code>.

     *

     * @return hash code of receiver

     * @see java.lang.Object#hashCode()

     */

    @Override

    public int hashCode() {

        int result = 17;



        if (tokenImage != null) {

            result = 37 * result + tokenImage.hashCode();

        } else {

            result = 37 * result;

        }



        if (value != null) {

            result = 37 * result + value.hashCode();

        } else {

            result = 37 * result;

        }



        return result;

    }



    static final int hexval(char c) {

        switch (c) {

        case '0':

            return 0;

        case '1':

            return 1;

        case '2':

            return 2;

        case '3':

            return 3;

        case '4':

            return 4;

        case '5':

            return 5;

        case '6':

            return 6;

        case '7':

            return 7;

        case '8':

            return 8;

        case '9':

            return 9;



        case 'a':

        case 'A':

            return 10;

        case 'b':

        case 'B':

            return 11;

        case 'c':

        case 'C':

            return 12;

        case 'd':

        case 'D':

            return 13;

        case 'e':

        case 'E':

            return 14;

        case 'f':

        case 'F':

            return 15;

        }



        throw new IllegalStateException("Illegal hex or unicode constant"); // Should

        // never

        // come

        // here

    }



    static final int octval(char c) {

        switch (c) {

        case '0':

            return 0;

        case '1':

            return 1;

        case '2':

            return 2;

        case '3':

            return 3;

        case '4':

            return 4;

        case '5':

            return 5;

        case '6':

            return 6;

        case '7':

            return 7;

        case '8':

            return 8;

        case '9':

            return 9;



        case 'a':

        case 'A':

            return 10;

        case 'b':

        case 'B':

            return 11;

        case 'c':

        case 'C':

            return 12;

        case 'd':

        case 'D':

            return 13;

        case 'e':

        case 'E':

            return 14;

        case 'f':

        case 'F':

            return 15;

        }



        throw new IllegalStateException("Illegal octal constant"); // Should

        // never

        // come here

    }



}