1 package org.simantics.document.server.request;
3 import java.util.ArrayList;
6 import org.simantics.databoard.Bindings;
7 import org.simantics.db.ReadGraph;
8 import org.simantics.db.Resource;
9 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
10 import org.simantics.db.common.request.IndexRoot;
11 import org.simantics.db.common.request.UnaryRead;
12 import org.simantics.db.exception.DatabaseException;
13 import org.simantics.db.layer0.scl.AbstractExpressionCompilationContext;
14 import org.simantics.db.layer0.scl.AbstractExpressionCompilationRequest;
15 import org.simantics.db.layer0.util.RuntimeEnvironmentRequest2;
16 import org.simantics.db.layer0.variable.Variable;
17 import org.simantics.document.server.request.ServerSCLValueRequest.CompilationContext;
18 import org.simantics.layer0.Layer0;
19 import org.simantics.scl.compiler.common.names.Name;
20 import org.simantics.scl.compiler.constants.StringConstant;
21 import org.simantics.scl.compiler.elaboration.expressions.EApply;
22 import org.simantics.scl.compiler.elaboration.expressions.EConstant;
23 import org.simantics.scl.compiler.elaboration.expressions.ELiteral;
24 import org.simantics.scl.compiler.elaboration.expressions.EVariable;
25 import org.simantics.scl.compiler.elaboration.expressions.Expression;
26 import org.simantics.scl.compiler.elaboration.modules.SCLValue;
27 import org.simantics.scl.compiler.environment.Environment;
28 import org.simantics.scl.compiler.environment.Environments;
29 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
30 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
31 import org.simantics.scl.compiler.top.SCLExpressionCompilationException;
32 import org.simantics.scl.compiler.types.TMetaVar;
33 import org.simantics.scl.compiler.types.TVar;
34 import org.simantics.scl.compiler.types.Type;
35 import org.simantics.scl.compiler.types.Types;
36 import org.simantics.scl.compiler.types.kinds.Kinds;
37 import org.simantics.scl.runtime.SCLContext;
38 import org.simantics.scl.runtime.function.Function1;
39 import org.simantics.structural2.scl.ComponentTypeProperty;
40 import org.simantics.structural2.scl.FindPossibleComponentTypeRequest;
41 import org.simantics.structural2.scl.ReadComponentTypeInterfaceRequest;
42 import org.simantics.utils.datastructures.Pair;
43 import org.slf4j.Logger;
44 import org.slf4j.LoggerFactory;
46 public class ServerSCLValueRequest extends AbstractExpressionCompilationRequest<CompilationContext, Variable> {
48 private static final Logger LOGGER = LoggerFactory.getLogger(ServerSCLValueRequest.class);
50 private final Pair<Resource,Resource> componentTypeAndRoot;
51 private final Resource literal;
52 protected String possibleExpectedValueType;
54 public static class CompilationContext extends AbstractExpressionCompilationContext {
55 public final Map<String, ComponentTypeProperty> propertyMap;
57 public CompilationContext(RuntimeEnvironment runtimeEnvironment,
58 Map<String, ComponentTypeProperty> propertyMap) {
59 super(runtimeEnvironment);
60 this.propertyMap = propertyMap;
64 private ServerSCLValueRequest(Pair<Resource,Resource> componentTypeAndRoot, Resource literal, String possibleExpectedValueType) {
65 assert(literal != null);
66 this.literal = literal;
67 this.componentTypeAndRoot = componentTypeAndRoot;
68 this.possibleExpectedValueType = possibleExpectedValueType;
71 public ServerSCLValueRequest(ReadGraph graph, Variable context) throws DatabaseException {
72 this(getComponentTypeAndRoot(graph, context), context.getRepresents(graph), resolveExpectedValueType(graph, context));
75 private static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Variable property) throws DatabaseException {
76 Variable parent = property.getParent(graph);
77 Resource represents = parent.getRepresents(graph);
78 if(represents != null) {
79 Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(represents));
81 Resource root = graph.syncRequest(new IndexRoot(type));
82 return Pair.make(type, root);
85 parent = parent.getParent(graph);
86 Resource root = graph.syncRequest(new IndexRoot(property.getRepresents(graph)));
87 return Pair.make(parent.getType(graph), root);
90 public static Object compileAndEvaluate(ReadGraph graph, Variable context) throws DatabaseException {
91 SCLContext sclContext = SCLContext.getCurrent();
92 Object oldGraph = sclContext.get("graph");
94 Function1<Variable,Object> exp = compile(graph, context);
95 sclContext.put("graph", graph);
96 return exp.apply(context);
97 } catch (DatabaseException e) {
98 throw (DatabaseException)e;
99 } catch (Throwable t) {
100 throw new DatabaseException(t);
102 sclContext.put("graph", oldGraph);
106 public static Function1<Variable, Object> compile(ReadGraph graph, Variable context) throws DatabaseException {
107 return graph.syncRequest(new ServerSCLValueRequest(graph, context), TransientCacheListener.<Function1<Variable,Object>>instance());
111 protected String getExpressionText(ReadGraph graph)
112 throws DatabaseException {
113 Layer0 L0 = Layer0.getInstance(graph);
114 return graph.getRelatedValue(literal, L0.SCLValue_expression, Bindings.STRING);
117 protected RuntimeEnvironmentRequest2 getRuntimeEnvironmentRequest(Resource componentType, Resource indexRoot) {
118 return new RuntimeEnvironmentRequest2(componentType, indexRoot) {
120 protected void fillEnvironmentSpecification(
121 EnvironmentSpecification environmentSpecification) {
127 protected CompilationContext getCompilationContext(ReadGraph graph)
128 throws DatabaseException {
129 return graph.syncRequest(new UnaryRead<Pair<Resource,Resource>,CompilationContext>(componentTypeAndRoot) {
131 public CompilationContext perform(ReadGraph graph)
132 throws DatabaseException {
133 RuntimeEnvironment runtimeEnvironment = graph.syncRequest(getRuntimeEnvironmentRequest(parameter.first, parameter.second));
134 Map<String, ComponentTypeProperty> propertyMap =
135 graph.syncRequest(new ReadComponentTypeInterfaceRequest(parameter.first, runtimeEnvironment.getEnvironment()),
136 TransientCacheListener.<Map<String, ComponentTypeProperty>>instance());
137 return new CompilationContext(runtimeEnvironment, propertyMap);
143 protected Type getContextVariableType() {
147 private static Expression accessInputVariable(Environment environment,
148 org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable) {
149 SCLValue variableParentFunction = environment.getValue(VARIABLE_PARENT);
150 return new EApply(new EConstant(variableParentFunction),
151 new EApply(new EConstant(variableParentFunction),
152 new EVariable(contextVariable)));
155 protected static Name PROPERTY_VALUE_CACHED = Name.create("Document/All", "propertyValueCached");
157 protected static Expression getProperty(Environment environment, Expression variable, String propertyName, Type type) {
159 new EConstant(environment.getValue(FROM_DYNAMIC), type),
161 new EConstant(environment.getValue(PROPERTY_VALUE_CACHED), Types.DYNAMIC),
163 new ELiteral(new StringConstant(propertyName))));
166 protected static Expression getPropertyFlexible(Environment environment, Expression variable, String propertyName, Type type) {
167 return makeTypeFlexible(environment, getProperty(environment, variable, propertyName, type), type);
170 protected static Expression standardGetProperty(
171 Environment environment,
172 org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
175 return getPropertyFlexible(environment, accessInputVariable(environment, contextVariable), name, type);
180 protected Expression getVariableAccessExpression(
182 CompilationContext context,
183 org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
184 String name) throws DatabaseException {
185 ComponentTypeProperty property = context.propertyMap.get(name);
187 return standardGetProperty(
188 context.runtimeEnvironment.getEnvironment(),
191 property.type == null ? Types.metaVar(Kinds.STAR) : property.type);
193 return getSpecialVariableAccessExpression(graph, context, contextVariable, name);
196 protected Expression getSpecialVariableAccessExpression(ReadGraph graph,
197 CompilationContext context,
198 org.simantics.scl.compiler.elaboration.expressions.Variable contextVariable,
199 String name) throws DatabaseException {
200 if(name.equals("input")) {
201 Environment environment = context.runtimeEnvironment.getEnvironment();
202 return accessInputVariable(environment, contextVariable);
204 else if(name.equals("self"))
205 return new EVariable(contextVariable);
211 protected Type getExpectedType(ReadGraph graph, CompilationContext context) throws DatabaseException {
212 if(possibleExpectedValueType != null) {
214 Type type = Environments.getType(context.runtimeEnvironment.getEnvironment(), possibleExpectedValueType);
215 type = Types.instantiate(Types.forAll(Types.freeVars(type).toArray(new TVar[0]), type), new ArrayList<TMetaVar>());
217 } catch (SCLExpressionCompilationException e) {
218 LOGGER.error("Could not get type for " + String.valueOf(possibleExpectedValueType), e);
221 return super.getExpectedType(graph, context);
226 public int hashCode() {
227 return 31*(31*getClass().hashCode() + literal.hashCode()) + componentTypeAndRoot.hashCode();
231 public boolean equals(Object obj) {
234 if(obj == null || obj.getClass() != getClass())
236 ServerSCLValueRequest other = (ServerSCLValueRequest)obj;
237 return literal.equals(other.literal) && componentTypeAndRoot.equals(other.componentTypeAndRoot);