package foundation.io.freemarker;

import freemarker.core.ParseException;
import freemarker.template.Template;

public class TokenMgrError extends Error {
	
	private static final long serialVersionUID = 1L;
	static final int LEXICAL_ERROR = 0;
    static final int STATIC_LEXER_ERROR = 1;
    static final int INVALID_LEXICAL_STATE = 2;
    static final int LOOP_DETECTED = 3;
    int errorCode;
    private String detail;
    private Integer lineNumber;
    private Integer columnNumber;
    private Integer endLineNumber;
    private Integer endColumnNumber;

    protected static final String addEscapes(String str) {
        StringBuilder retval = new StringBuilder();

        for(int i = 0; i < str.length(); ++i) {
            switch(str.charAt(i)) {
                case '\u0000':
                    break;
                case '\b':
                    retval.append("\\b");
                    break;
                case '\t':
                    retval.append("\\t");
                    break;
                case '\n':
                    retval.append("\\n");
                    break;
                case '\f':
                    retval.append("\\f");
                    break;
                case '\r':
                    retval.append("\\r");
                    break;
                case '"':
                    retval.append("\\\"");
                    break;
                case '\'':
                    retval.append("\\'");
                    break;
                case '\\':
                    retval.append("\\\\");
                    break;
                default:
                    char ch;
                    if ((ch = str.charAt(i)) >= ' ' && ch <= '~') {
                        retval.append(ch);
                    } else {
                        String s = "0000" + Integer.toString(ch, 16);
                        retval.append("\\u" + s.substring(s.length() - 4, s.length()));
                    }
            }
        }

        return retval.toString();
    }

    protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
        return "Lexical error: encountered " + (EOFSeen ? "<EOF> " : "\"" + addEscapes(String.valueOf(curChar)) + "\"" + " (" + curChar + "), ") + "after \"" + addEscapes(errorAfter) + "\".";
    }

    public String getMessage() {
        return super.getMessage();
    }

    public TokenMgrError() {
    }

    public TokenMgrError(String detail, int reason) {
        super(detail);
        this.detail = detail;
        this.errorCode = reason;
    }

    /** @deprecated */
    @Deprecated
    public TokenMgrError(String detail, int reason, int errorLine, int errorColumn) {
        this(detail, reason, errorLine, errorColumn, 0, 0);
        this.endLineNumber = null;
        this.endColumnNumber = null;
    }

    public TokenMgrError(String detail, int reason, int errorLine, int errorColumn, int endLineNumber, int endColumnNumber) {
        super(detail);
        this.detail = detail;
        this.errorCode = reason;
        this.lineNumber = errorLine;
        this.columnNumber = errorColumn;
        this.endLineNumber = endLineNumber;
        this.endColumnNumber = endColumnNumber;
    }

    TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, int curChar, int reason) {
        this(EOFSeen, lexState, errorLine, errorColumn, errorAfter, (char)curChar, reason);
    }

    public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
        this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
        this.lineNumber = errorLine;
        this.columnNumber = errorColumn;
        this.endLineNumber = this.lineNumber;
        this.endColumnNumber = this.columnNumber;
    }

    public Integer getLineNumber() {
        return this.lineNumber;
    }

    public Integer getColumnNumber() {
        return this.columnNumber;
    }

    public Integer getEndLineNumber() {
        return this.endLineNumber;
    }

    public Integer getEndColumnNumber() {
        return this.endColumnNumber;
    }

    public String getDetail() {
        return this.detail;
    }

    public ParseException toParseException(Template template) {
        return new ParseException(this.getDetail(), template, this.getLineNumber() != null ? this.getLineNumber() : 0, this.getColumnNumber() != null ? this.getColumnNumber() : 0, this.getEndLineNumber() != null ? this.getEndLineNumber() : 0, this.getEndColumnNumber() != null ? this.getEndColumnNumber() : 0);
    }
}