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Don't permit variables to be over-written.

This commit is contained in:
Brian Postlethwaite 2024-04-12 11:55:30 +10:00
parent 7b7af6087e
commit 5d612c78b2
1 changed files with 27 additions and 0 deletions
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27
org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/fhirpath/FHIRPathEngine.java
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@ -1056,9 +1056,18 @@ public class FHIRPathEngine {
return definedVariables == null ? makeNull() : definedVariables.get(name);
}
public void setDefinedVariable(String name, List<Base> value) {
if (isSystemVariable(name))
throw new PathEngineException(worker.formatMessage(I18nConstants.FHIRPATH_REDEFINE_VARIABLE, name), I18nConstants.FHIRPATH_REDEFINE_VARIABLE);
if (definedVariables == null) {
definedVariables = new HashMap<String, List<Base>>();
} else {
if (definedVariables.containsKey(name)) {
// Can't do this, so throw an error
throw new PathEngineException(worker.formatMessage(I18nConstants.FHIRPATH_REDEFINE_VARIABLE, name), I18nConstants.FHIRPATH_REDEFINE_VARIABLE);
}
}
definedVariables.put(name, value);
}
}
@ -1093,6 +1102,9 @@ public class FHIRPathEngine {
return definedVariables == null ? null : definedVariables.get(name);
}
public void setDefinedVariable(String name, TypeDetails value) {
if (isSystemVariable(name))
throw new PathEngineException("Redefine of variable "+name, I18nConstants.FHIRPATH_REDEFINE_VARIABLE);
if (definedVariables == null) {
definedVariables = new HashMap<String, TypeDetails>();
} else {
@ -1771,6 +1783,21 @@ public class FHIRPathEngine {
}
}
static boolean isSystemVariable(String name){
if (name.equals("sct"))
return true;
if (name.equals("loinc"))
return true;
if (name.equals("ucum"))
return true;
if (name.equals("resource"))
return true;
if (name.equals("rootResource"))
return true;
if (name.equals("context"))
return true;
return false;
}
private List<Base> resolveConstant(ExecutionContext context, String s, boolean beforeContext, ExpressionNode expr, boolean explicitConstant) throws PathEngineException {
if (s.equals("%sct")) {