Examples with FHIRLexerException org.hl7.fhir.dstu3.utils.FHIRLexer.FHIRLexerException used on opensource projects

Example 26 with FHIRLexerException

use of org.hl7.fhir.dstu3.utils.FHIRLexer.FHIRLexerException in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method parseExpression.

private ExpressionNode parseExpression(FHIRLexer lexer, boolean proximal) throws FHIRLexerException {
    ExpressionNode result = new ExpressionNode(lexer.nextId());
    ExpressionNode wrapper = null;
    SourceLocation c = lexer.getCurrentStartLocation();
    result.setStart(lexer.getCurrentLocation());
    // so we back correct for both +/- and as part of a numeric constant below.
    if (Utilities.existsInList(lexer.getCurrent(), "-", "+")) {
        wrapper = new ExpressionNode(lexer.nextId());
        wrapper.setKind(Kind.Unary);
        wrapper.setOperation(ExpressionNode.Operation.fromCode(lexer.take()));
        wrapper.setProximal(proximal);
    }
    if (lexer.isConstant()) {
        boolean isString = lexer.isStringConstant();
        if (!isString && (lexer.getCurrent().startsWith("-") || lexer.getCurrent().startsWith("+"))) {
            // the grammar says that this is a unary operation; it affects the correct processing order of the inner operations
            wrapper = new ExpressionNode(lexer.nextId());
            wrapper.setKind(Kind.Unary);
            wrapper.setOperation(ExpressionNode.Operation.fromCode(lexer.getCurrent().substring(0, 1)));
            wrapper.setProximal(proximal);
            lexer.setCurrent(lexer.getCurrent().substring(1));
        }
        result.setConstant(processConstant(lexer));
        result.setKind(Kind.Constant);
        if (!isString && !lexer.done() && (result.getConstant() instanceof IntegerType || result.getConstant() instanceof DecimalType) && (lexer.isStringConstant() || lexer.hasToken("year", "years", "month", "months", "week", "weeks", "day", "days", "hour", "hours", "minute", "minutes", "second", "seconds", "millisecond", "milliseconds"))) {
            // it's a quantity
            String ucum = null;
            if (lexer.hasToken("year", "years", "month", "months", "week", "weeks", "day", "days", "hour", "hours", "minute", "minutes", "second", "seconds", "millisecond", "milliseconds")) {
                String s = lexer.take();
                if (s.equals("year") || s.equals("years"))
                    ucum = "a";
                else if (s.equals("month") || s.equals("months"))
                    ucum = "mo";
                else if (s.equals("week") || s.equals("weeks"))
                    ucum = "wk";
                else if (s.equals("day") || s.equals("days"))
                    ucum = "d";
                else if (s.equals("hour") || s.equals("hours"))
                    ucum = "h";
                else if (s.equals("minute") || s.equals("minutes"))
                    ucum = "min";
                else if (s.equals("second") || s.equals("seconds"))
                    ucum = "s";
                else
                    // (s.equals("millisecond") || s.equals("milliseconds"))
                    ucum = "ms";
            } else
                ucum = lexer.readConstant("units");
            result.setConstant(new Quantity().setValue(new BigDecimal(result.getConstant().primitiveValue())).setSystem("http://unitsofmeasure.org").setCode(ucum));
        }
        result.setEnd(lexer.getCurrentLocation());
    } else if ("(".equals(lexer.getCurrent())) {
        lexer.next();
        result.setKind(Kind.Group);
        result.setGroup(parseExpression(lexer, true));
        if (!")".equals(lexer.getCurrent()))
            throw lexer.error("Found " + lexer.getCurrent() + " expecting a \")\"");
        result.setEnd(lexer.getCurrentLocation());
        lexer.next();
    } else {
        if (!lexer.isToken() && !lexer.getCurrent().startsWith("`"))
            throw lexer.error("Found " + lexer.getCurrent() + " expecting a token name");
        if (lexer.isFixedName())
            result.setName(lexer.readFixedName("Path Name"));
        else
            result.setName(lexer.take());
        result.setEnd(lexer.getCurrentLocation());
        if (!result.checkName())
            throw lexer.error("Found " + result.getName() + " expecting a valid token name");
        if ("(".equals(lexer.getCurrent())) {
            Function f = Function.fromCode(result.getName());
            FunctionDetails details = null;
            if (f == null) {
                if (hostServices != null)
                    details = hostServices.resolveFunction(result.getName());
                if (details == null)
                    throw lexer.error("The name " + result.getName() + " is not a valid function name");
                f = Function.Custom;
            }
            result.setKind(Kind.Function);
            result.setFunction(f);
            lexer.next();
            while (!")".equals(lexer.getCurrent())) {
                result.getParameters().add(parseExpression(lexer, true));
                if (",".equals(lexer.getCurrent()))
                    lexer.next();
                else if (!")".equals(lexer.getCurrent()))
                    throw lexer.error("The token " + lexer.getCurrent() + " is not expected here - either a \",\" or a \")\" expected");
            }
            result.setEnd(lexer.getCurrentLocation());
            lexer.next();
            checkParameters(lexer, c, result, details);
        } else
            result.setKind(Kind.Name);
    }
    ExpressionNode focus = result;
    if ("[".equals(lexer.getCurrent())) {
        lexer.next();
        ExpressionNode item = new ExpressionNode(lexer.nextId());
        item.setKind(Kind.Function);
        item.setFunction(ExpressionNode.Function.Item);
        item.getParameters().add(parseExpression(lexer, true));
        if (!lexer.getCurrent().equals("]"))
            throw lexer.error("The token " + lexer.getCurrent() + " is not expected here - a \"]\" expected");
        lexer.next();
        result.setInner(item);
        focus = item;
    }
    if (".".equals(lexer.getCurrent())) {
        lexer.next();
        focus.setInner(parseExpression(lexer, false));
    }
    result.setProximal(proximal);
    if (proximal) {
        while (lexer.isOp()) {
            focus.setOperation(ExpressionNode.Operation.fromCode(lexer.getCurrent()));
            focus.setOpStart(lexer.getCurrentStartLocation());
            focus.setOpEnd(lexer.getCurrentLocation());
            lexer.next();
            focus.setOpNext(parseExpression(lexer, false));
            focus = focus.getOpNext();
        }
        result = organisePrecedence(lexer, result);
    }
    if (wrapper != null) {
        wrapper.setOpNext(result);
        result.setProximal(false);
        result = wrapper;
    }
    return result;
}

Example 27 with FHIRLexerException

use of org.hl7.fhir.dstu3.utils.FHIRLexer.FHIRLexerException in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method parseExpression.

private ExpressionNode parseExpression(FHIRLexer lexer, boolean proximal) throws FHIRLexerException {
    ExpressionNode result = new ExpressionNode(lexer.nextId());
    ExpressionNode wrapper = null;
    SourceLocation c = lexer.getCurrentStartLocation();
    result.setStart(lexer.getCurrentLocation());
    // so we back correct for both +/- and as part of a numeric constant below.
    if (Utilities.existsInList(lexer.getCurrent(), "-", "+")) {
        wrapper = new ExpressionNode(lexer.nextId());
        wrapper.setKind(Kind.Unary);
        wrapper.setOperation(ExpressionNode.Operation.fromCode(lexer.take()));
        wrapper.setStart(lexer.getCurrentLocation());
        wrapper.setProximal(proximal);
    }
    if (lexer.getCurrent() == null) {
        throw lexer.error("Expression terminated unexpectedly");
    } else if (lexer.isConstant()) {
        boolean isString = lexer.isStringConstant();
        if (!isString && (lexer.getCurrent().startsWith("-") || lexer.getCurrent().startsWith("+"))) {
            // the grammar says that this is a unary operation; it affects the correct processing order of the inner operations
            wrapper = new ExpressionNode(lexer.nextId());
            wrapper.setKind(Kind.Unary);
            wrapper.setOperation(ExpressionNode.Operation.fromCode(lexer.getCurrent().substring(0, 1)));
            wrapper.setProximal(proximal);
            wrapper.setStart(lexer.getCurrentLocation());
            lexer.setCurrent(lexer.getCurrent().substring(1));
        }
        result.setConstant(processConstant(lexer));
        result.setKind(Kind.Constant);
        if (!isString && !lexer.done() && (result.getConstant() instanceof IntegerType || result.getConstant() instanceof DecimalType) && (lexer.isStringConstant() || lexer.hasToken("year", "years", "month", "months", "week", "weeks", "day", "days", "hour", "hours", "minute", "minutes", "second", "seconds", "millisecond", "milliseconds"))) {
            // it's a quantity
            String ucum = null;
            String unit = null;
            if (lexer.hasToken("year", "years", "month", "months", "week", "weeks", "day", "days", "hour", "hours", "minute", "minutes", "second", "seconds", "millisecond", "milliseconds")) {
                String s = lexer.take();
                unit = s;
                if (s.equals("year") || s.equals("years")) {
                // this is not the UCUM year
                } else if (s.equals("month") || s.equals("months")) {
                // this is not the UCUM month
                } else if (s.equals("week") || s.equals("weeks")) {
                    ucum = "wk";
                } else if (s.equals("day") || s.equals("days")) {
                    ucum = "d";
                } else if (s.equals("hour") || s.equals("hours")) {
                    ucum = "h";
                } else if (s.equals("minute") || s.equals("minutes")) {
                    ucum = "min";
                } else if (s.equals("second") || s.equals("seconds")) {
                    ucum = "s";
                } else {
                    // (s.equals("millisecond") || s.equals("milliseconds"))
                    ucum = "ms";
                }
            } else {
                ucum = lexer.readConstant("units");
            }
            result.setConstant(new Quantity().setValue(new BigDecimal(result.getConstant().primitiveValue())).setUnit(unit).setSystem(ucum == null ? null : "http://unitsofmeasure.org").setCode(ucum));
        }
        result.setEnd(lexer.getCurrentLocation());
    } else if ("(".equals(lexer.getCurrent())) {
        lexer.next();
        result.setKind(Kind.Group);
        result.setGroup(parseExpression(lexer, true));
        if (!")".equals(lexer.getCurrent())) {
            throw lexer.error("Found " + lexer.getCurrent() + " expecting a \")\"");
        }
        result.setEnd(lexer.getCurrentLocation());
        lexer.next();
    } else {
        if (!lexer.isToken() && !lexer.getCurrent().startsWith("`")) {
            throw lexer.error("Found " + lexer.getCurrent() + " expecting a token name");
        }
        if (lexer.isFixedName()) {
            result.setName(lexer.readFixedName("Path Name"));
        } else {
            result.setName(lexer.take());
        }
        result.setEnd(lexer.getCurrentLocation());
        if (!result.checkName()) {
            throw lexer.error("Found " + result.getName() + " expecting a valid token name");
        }
        if ("(".equals(lexer.getCurrent())) {
            Function f = Function.fromCode(result.getName());
            FunctionDetails details = null;
            if (f == null) {
                if (hostServices != null) {
                    details = hostServices.resolveFunction(result.getName());
                }
                if (details == null) {
                    throw lexer.error("The name " + result.getName() + " is not a valid function name");
                }
                f = Function.Custom;
            }
            result.setKind(Kind.Function);
            result.setFunction(f);
            lexer.next();
            while (!")".equals(lexer.getCurrent())) {
                result.getParameters().add(parseExpression(lexer, true));
                if (",".equals(lexer.getCurrent())) {
                    lexer.next();
                } else if (!")".equals(lexer.getCurrent())) {
                    throw lexer.error("The token " + lexer.getCurrent() + " is not expected here - either a \",\" or a \")\" expected");
                }
            }
            result.setEnd(lexer.getCurrentLocation());
            lexer.next();
            checkParameters(lexer, c, result, details);
        } else {
            result.setKind(Kind.Name);
        }
    }
    ExpressionNode focus = result;
    if ("[".equals(lexer.getCurrent())) {
        lexer.next();
        ExpressionNode item = new ExpressionNode(lexer.nextId());
        item.setKind(Kind.Function);
        item.setFunction(ExpressionNode.Function.Item);
        item.getParameters().add(parseExpression(lexer, true));
        if (!lexer.getCurrent().equals("]")) {
            throw lexer.error("The token " + lexer.getCurrent() + " is not expected here - a \"]\" expected");
        }
        lexer.next();
        result.setInner(item);
        focus = item;
    }
    if (".".equals(lexer.getCurrent())) {
        lexer.next();
        focus.setInner(parseExpression(lexer, false));
    }
    result.setProximal(proximal);
    if (proximal) {
        while (lexer.isOp()) {
            focus.setOperation(ExpressionNode.Operation.fromCode(lexer.getCurrent()));
            focus.setOpStart(lexer.getCurrentStartLocation());
            focus.setOpEnd(lexer.getCurrentLocation());
            lexer.next();
            focus.setOpNext(parseExpression(lexer, false));
            focus = focus.getOpNext();
        }
        result = organisePrecedence(lexer, result);
    }
    if (wrapper != null) {
        wrapper.setOpNext(result);
        result.setProximal(false);
        result = wrapper;
    }
    return result;
}

Example 28 with FHIRLexerException

use of org.hl7.fhir.dstu3.utils.FHIRLexer.FHIRLexerException in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method parse.

public ExpressionNode parse(String path, String name) throws FHIRLexerException {
    FHIRLexer lexer = new FHIRLexer(path, name);
    if (lexer.done()) {
        throw lexer.error("Path cannot be empty");
    }
    ExpressionNode result = parseExpression(lexer, true);
    if (!lexer.done()) {
        throw lexer.error("Premature ExpressionNode termination at unexpected token \"" + lexer.getCurrent() + "\"");
    }
    result.check();
    return result;
}

Example 29 with FHIRLexerException

use of org.hl7.fhir.dstu3.utils.FHIRLexer.FHIRLexerException in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method parse.

/**
 * Parse a path that is part of some other syntax
 *
 * @return
 * @throws PathEngineException
 * @throws Exception
 */
public ExpressionNode parse(FHIRLexer lexer) throws FHIRLexerException {
    ExpressionNode result = parseExpression(lexer, true);
    result.check();
    return result;
}

Example 30 with FHIRLexerException

use of org.hl7.fhir.dstu3.utils.FHIRLexer.FHIRLexerException in project org.hl7.fhir.core by hapifhir.

the class FHIRLexer method processConstant.

public String processConstant(String s) throws FHIRLexerException {
    StringBuilder b = new StringBuilder();
    int i = 1;
    while (i < s.length() - 1) {
        char ch = s.charAt(i);
        if (ch == '\\') {
            i++;
            switch(s.charAt(i)) {
                case 't':
                    b.append('\t');
                    break;
                case 'r':
                    b.append('\r');
                    break;
                case 'n':
                    b.append('\n');
                    break;
                case 'f':
                    b.append('\f');
                    break;
                case '\'':
                    b.append('\'');
                    break;
                case '"':
                    b.append('"');
                    break;
                case '`':
                    b.append('`');
                    break;
                case '\\':
                    b.append('\\');
                    break;
                case '/':
                    b.append('/');
                    break;
                case 'u':
                    i++;
                    int uc = Integer.parseInt(s.substring(i, i + 4), 16);
                    b.append((char) uc);
                    i = i + 4;
                    break;
                default:
                    throw new FHIRLexerException("Unknown character escape \\" + s.charAt(i));
            }
        } else {
            b.append(ch);
            i++;
        }
    }
    return b.toString();
}