use of org.hl7.fhir.r4b.utils.FHIRLexer in project org.hl7.fhir.core by hapifhir.
the class FHIRPathEngine method newGroup.
private ExpressionNode newGroup(FHIRLexer lexer, ExpressionNode next) {
ExpressionNode result = new ExpressionNode(lexer.nextId());
result.setKind(Kind.Group);
result.setGroup(next);
result.getGroup().setProximal(true);
return result;
}
use of org.hl7.fhir.r4b.utils.FHIRLexer 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());
SourceLocation c = lexer.getCurrentStartLocation();
result.setStart(lexer.getCurrentLocation());
// special:
if (lexer.getCurrent().equals("-")) {
lexer.take();
lexer.setCurrent("-" + lexer.getCurrent());
}
if (lexer.isConstant(false)) {
checkConstant(lexer.getCurrent(), lexer);
result.setConstant(lexer.take());
result.setKind(Kind.Constant);
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.getCurrent().startsWith("\""))
result.setName(lexer.readConstant("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) {
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);
}
return result;
}
use of org.hl7.fhir.r4b.utils.FHIRLexer in project org.hl7.fhir.core by hapifhir.
the class StructureMapUtilities method parseGroup.
private void parseGroup(StructureMap result, FHIRLexer lexer) throws FHIRException {
lexer.token("group");
StructureMapGroupComponent group = result.addGroup();
group.setName(lexer.take());
if (lexer.hasToken("extends")) {
lexer.next();
group.setExtends(lexer.take());
}
lexer.skipComments();
while (lexer.hasToken("input")) parseInput(group, lexer);
while (!lexer.hasToken("endgroup")) {
if (lexer.done())
throw lexer.error("premature termination expecting 'endgroup'");
parseRule(group.getRule(), lexer);
}
lexer.next();
lexer.skipComments();
}
use of org.hl7.fhir.r4b.utils.FHIRLexer in project org.hl7.fhir.core by hapifhir.
the class StructureMapUtilities method parseConceptMap.
private void parseConceptMap(StructureMap result, FHIRLexer lexer) throws FHIRLexerException {
lexer.token("conceptmap");
ConceptMap map = new ConceptMap();
String id = lexer.readConstant("map id");
if (!id.startsWith("#"))
lexer.error("Concept Map identifier must start with #");
map.setId(id.substring(1));
result.getContained().add(map);
lexer.token("{");
lexer.skipComments();
// lexer.token("source");
// map.setSource(new UriType(lexer.readConstant("source")));
// lexer.token("target");
// map.setSource(new UriType(lexer.readConstant("target")));
Map<String, String> prefixes = new HashMap<String, String>();
while (lexer.hasToken("prefix")) {
lexer.token("prefix");
String n = lexer.take();
lexer.token("=");
String v = lexer.readConstant("prefix url");
prefixes.put(n, v);
}
while (!lexer.hasToken("}")) {
SourceElementComponent e = map.addElement();
e.setSystem(readPrefix(prefixes, lexer));
lexer.token(":");
e.setCode(lexer.take());
TargetElementComponent tgt = e.addTarget();
tgt.setEquivalence(readEquivalence(lexer));
if (tgt.getEquivalence() != ConceptMapEquivalence.UNMATCHED) {
tgt.setSystem(readPrefix(prefixes, lexer));
lexer.token(":");
tgt.setCode(lexer.take());
}
if (lexer.hasComment())
tgt.setComments(lexer.take().substring(2).trim());
}
lexer.token("}");
}
use of org.hl7.fhir.r4b.utils.FHIRLexer in project org.hl7.fhir.core by hapifhir.
the class StructureMapUtilities method parseRuleReference.
private void parseRuleReference(StructureMapGroupRuleComponent rule, FHIRLexer lexer) throws FHIRLexerException {
StructureMapGroupRuleDependentComponent ref = rule.addDependent();
ref.setName(lexer.take());
lexer.token("(");
boolean done = false;
while (!done) {
ref.addVariable(lexer.take());
done = !lexer.hasToken(",");
if (!done)
lexer.next();
}
lexer.token(")");
}
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