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package org.hl7.fhir.dstu3.model;
import java.util.ArrayList;
import java.util.List;
import org.hl7.fhir.utilities.Utilities;
public class ExpressionNode {
public enum Kind {
Name, Function, Constant, Group
}
public static class SourceLocation {
private int line;
private int column;
public SourceLocation(int line, int column) {
super();
this.line = line;
this.column = column;
}
public int getLine() {
return line;
}
public int getColumn() {
return column;
}
public void setLine(int line) {
this.line = line;
}
public void setColumn(int column) {
this.column = column;
}
public String toString() {
return Integer.toString(line)+", "+Integer.toString(column);
}
}
public enum Function {
Custom,
Empty, Not, Exists, SubsetOf, SupersetOf, IsDistinct, Distinct, Count, Where, Select, All, Repeat, Item /*implicit from name[]*/, As, Is, Single,
First, Last, Tail, Skip, Take, Iif, ToInteger, ToDecimal, ToString, Substring, StartsWith, EndsWith, Matches, ReplaceMatches, Contains, Replace, Length,
Children, Descendants, MemberOf, Trace, Today, Now, Resolve, Extension, HasValue, AliasAs, Alias;
public static Function fromCode(String name) {
if (name.equals("empty")) return Function.Empty;
if (name.equals("not")) return Function.Not;
if (name.equals("exists")) return Function.Exists;
if (name.equals("subsetOf")) return Function.SubsetOf;
if (name.equals("supersetOf")) return Function.SupersetOf;
if (name.equals("isDistinct")) return Function.IsDistinct;
if (name.equals("distinct")) return Function.Distinct;
if (name.equals("count")) return Function.Count;
if (name.equals("where")) return Function.Where;
if (name.equals("select")) return Function.Select;
if (name.equals("all")) return Function.All;
if (name.equals("repeat")) return Function.Repeat;
if (name.equals("item")) return Function.Item;
if (name.equals("as")) return Function.As;
if (name.equals("is")) return Function.Is;
if (name.equals("single")) return Function.Single;
if (name.equals("first")) return Function.First;
if (name.equals("last")) return Function.Last;
if (name.equals("tail")) return Function.Tail;
if (name.equals("skip")) return Function.Skip;
if (name.equals("take")) return Function.Take;
if (name.equals("iif")) return Function.Iif;
if (name.equals("toInteger")) return Function.ToInteger;
if (name.equals("toDecimal")) return Function.ToDecimal;
if (name.equals("toString")) return Function.ToString;
if (name.equals("substring")) return Function.Substring;
if (name.equals("startsWith")) return Function.StartsWith;
if (name.equals("endsWith")) return Function.EndsWith;
if (name.equals("matches")) return Function.Matches;
if (name.equals("replaceMatches")) return Function.ReplaceMatches;
if (name.equals("contains")) return Function.Contains;
if (name.equals("replace")) return Function.Replace;
if (name.equals("length")) return Function.Length;
if (name.equals("children")) return Function.Children;
if (name.equals("descendants")) return Function.Descendants;
if (name.equals("memberOf")) return Function.MemberOf;
if (name.equals("trace")) return Function.Trace;
if (name.equals("today")) return Function.Today;
if (name.equals("now")) return Function.Now;
if (name.equals("resolve")) return Function.Resolve;
if (name.equals("extension")) return Function.Extension;
if (name.equals("hasValue")) return Function.HasValue;
if (name.equals("alias")) return Function.Alias;
if (name.equals("aliasAs")) return Function.AliasAs;
return null;
}
public String toCode() {
switch (this) {
case Empty : return "empty";
case Not : return "not";
case Exists : return "exists";
case SubsetOf : return "subsetOf";
case SupersetOf : return "supersetOf";
case IsDistinct : return "isDistinct";
case Distinct : return "distinct";
case Count : return "count";
case Where : return "where";
case Select : return "select";
case All : return "all";
case Repeat : return "repeat";
case Item : return "item";
case As : return "as";
case Is : return "is";
case Single : return "single";
case First : return "first";
case Last : return "last";
case Tail : return "tail";
case Skip : return "skip";
case Take : return "take";
case Iif : return "iif";
case ToInteger : return "toInteger";
case ToDecimal : return "toDecimal";
case ToString : return "toString";
case Substring : return "substring";
case StartsWith : return "startsWith";
case EndsWith : return "endsWith";
case Matches : return "matches";
case ReplaceMatches : return "replaceMatches";
case Contains : return "contains";
case Replace : return "replace";
case Length : return "length";
case Children : return "children";
case Descendants : return "descendants";
case MemberOf : return "memberOf";
case Trace : return "trace";
case Today : return "today";
case Now : return "now";
case Resolve : return "resolve";
case Extension : return "extension";
case HasValue : return "hasValue";
case Alias : return "alias";
case AliasAs : return "aliasAs";
default: return "??";
}
}
}
public enum Operation {
Equals, Equivalent, NotEquals, NotEquivalent, LessThen, Greater, LessOrEqual, GreaterOrEqual, Is, As, Union, Or, And, Xor, Implies,
Times, DivideBy, Plus, Minus, Concatenate, Div, Mod, In, Contains;
public static Operation fromCode(String name) {
if (Utilities.noString(name))
return null;
if (name.equals("="))
return Operation.Equals;
if (name.equals("~"))
return Operation.Equivalent;
if (name.equals("!="))
return Operation.NotEquals;
if (name.equals("!~"))
return Operation.NotEquivalent;
if (name.equals(">"))
return Operation.Greater;
if (name.equals("<"))
return Operation.LessThen;
if (name.equals(">="))
return Operation.GreaterOrEqual;
if (name.equals("<="))
return Operation.LessOrEqual;
if (name.equals("|"))
return Operation.Union;
if (name.equals("or"))
return Operation.Or;
if (name.equals("and"))
return Operation.And;
if (name.equals("xor"))
return Operation.Xor;
if (name.equals("is"))
return Operation.Is;
if (name.equals("as"))
return Operation.As;
if (name.equals("*"))
return Operation.Times;
if (name.equals("/"))
return Operation.DivideBy;
if (name.equals("+"))
return Operation.Plus;
if (name.equals("-"))
return Operation.Minus;
if (name.equals("&"))
return Operation.Concatenate;
if (name.equals("implies"))
return Operation.Implies;
if (name.equals("div"))
return Operation.Div;
if (name.equals("mod"))
return Operation.Mod;
if (name.equals("in"))
return Operation.In;
if (name.equals("contains"))
return Operation.Contains;
return null;
}
public String toCode() {
switch (this) {
case Equals : return "=";
case Equivalent : return "~";
case NotEquals : return "!=";
case NotEquivalent : return "!~";
case Greater : return ">";
case LessThen : return "<";
case GreaterOrEqual : return ">=";
case LessOrEqual : return "<=";
case Union : return "|";
case Or : return "or";
case And : return "and";
case Xor : return "xor";
case Times : return "*";
case DivideBy : return "/";
case Plus : return "+";
case Minus : return "-";
case Concatenate : return "&";
case Implies : return "implies";
case Is : return "is";
case As : return "as";
case Div : return "div";
case Mod : return "mod";
case In : return "in";
case Contains : return "contains";
default: return "??";
}
}
}
public enum CollectionStatus {
SINGLETON, ORDERED, UNORDERED;
}
//the expression will have one of either name or constant
private String uniqueId;
private Kind kind;
private String name;
private String constant;
private Function function;
private List parameters; // will be created if there is a function
private ExpressionNode inner;
private ExpressionNode group;
private Operation operation;
private boolean proximal; // a proximal operation is the first in the sequence of operations. This is significant when evaluating the outcomes
private ExpressionNode opNext;
private SourceLocation start;
private SourceLocation end;
private SourceLocation opStart;
private SourceLocation opEnd;
private TypeDetails types;
private TypeDetails opTypes;
public ExpressionNode(int uniqueId) {
super();
this.uniqueId = Integer.toString(uniqueId);
}
public String toString() {
StringBuilder b = new StringBuilder();
switch (kind) {
case Name:
b.append(name);
break;
case Function:
if (function == Function.Item)
b.append("[");
else {
b.append(name);
b.append("(");
}
boolean first = true;
for (ExpressionNode n : parameters) {
if (first)
first = false;
else
b.append(", ");
b.append(n.toString());
}
if (function == Function.Item)
b.append("]");
else {
b.append(")");
}
break;
case Constant:
b.append(Utilities.escapeJava(constant));
break;
case Group:
b.append("(");
b.append(group.toString());
b.append(")");
}
if (inner != null) {
b.append(".");
b.append(inner.toString());
}
if (operation != null) {
b.append(" ");
b.append(operation.toCode());
b.append(" ");
b.append(opNext.toString());
}
return b.toString();
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getConstant() {
return constant;
}
public void setConstant(String constant) {
this.constant = constant;
}
public Function getFunction() {
return function;
}
public void setFunction(Function function) {
this.function = function;
if (parameters == null)
parameters = new ArrayList();
}
public boolean isProximal() {
return proximal;
}
public void setProximal(boolean proximal) {
this.proximal = proximal;
}
public Operation getOperation() {
return operation;
}
public void setOperation(Operation operation) {
this.operation = operation;
}
public ExpressionNode getInner() {
return inner;
}
public void setInner(ExpressionNode value) {
this.inner = value;
}
public ExpressionNode getOpNext() {
return opNext;
}
public void setOpNext(ExpressionNode value) {
this.opNext = value;
}
public List getParameters() {
return parameters;
}
public boolean checkName() {
if (!name.startsWith("$"))
return true;
else
return name.equals("$this");
}
public Kind getKind() {
return kind;
}
public void setKind(Kind kind) {
this.kind = kind;
}
public ExpressionNode getGroup() {
return group;
}
public void setGroup(ExpressionNode group) {
this.group = group;
}
public SourceLocation getStart() {
return start;
}
public void setStart(SourceLocation start) {
this.start = start;
}
public SourceLocation getEnd() {
return end;
}
public void setEnd(SourceLocation end) {
this.end = end;
}
public SourceLocation getOpStart() {
return opStart;
}
public void setOpStart(SourceLocation opStart) {
this.opStart = opStart;
}
public SourceLocation getOpEnd() {
return opEnd;
}
public void setOpEnd(SourceLocation opEnd) {
this.opEnd = opEnd;
}
public String getUniqueId() {
return uniqueId;
}
public int parameterCount() {
if (parameters == null)
return 0;
else
return parameters.size();
}
public String Canonical() {
StringBuilder b = new StringBuilder();
write(b);
return b.toString();
}
public String summary() {
switch (kind) {
case Name: return uniqueId+": "+name;
case Function: return uniqueId+": "+function.toString()+"()";
case Constant: return uniqueId+": "+constant;
case Group: return uniqueId+": (Group)";
}
return "??";
}
private void write(StringBuilder b) {
switch (kind) {
case Name:
b.append(name);
break;
case Constant:
b.append(constant);
break;
case Function:
b.append(function.toCode());
b.append('(');
boolean f = true;
for (ExpressionNode n : parameters) {
if (f)
f = false;
else
b.append(", ");
n.write(b);
}
b.append(')');
break;
case Group:
b.append('(');
group.write(b);
b.append(')');
}
if (inner != null) {
b.append('.');
inner.write(b);
}
if (operation != null) {
b.append(' ');
b.append(operation.toCode());
b.append(' ');
opNext.write(b);
}
}
public String check() {
switch (kind) {
case Name:
if (Utilities.noString(name))
return "No Name provided @ "+location();
break;
case Function:
if (function == null)
return "No Function id provided @ "+location();
for (ExpressionNode n : parameters) {
String msg = n.check();
if (msg != null)
return msg;
}
break;
case Constant:
if (Utilities.noString(constant))
return "No Constant provided @ "+location();
break;
case Group:
if (group == null)
return "No Group provided @ "+location();
else {
String msg = group.check();
if (msg != null)
return msg;
}
}
if (inner != null) {
String msg = inner.check();
if (msg != null)
return msg;
}
if (operation == null) {
if (opNext != null)
return "Next provided when it shouldn't be @ "+location();
}
else {
if (opNext == null)
return "No Next provided @ "+location();
else
opNext.check();
}
return null;
}
private String location() {
return Integer.toString(start.line)+", "+Integer.toString(start.column);
}
public TypeDetails getTypes() {
return types;
}
public void setTypes(TypeDetails types) {
this.types = types;
}
public TypeDetails getOpTypes() {
return opTypes;
}
public void setOpTypes(TypeDetails opTypes) {
this.opTypes = opTypes;
}
}
