// buildInitializationCompoundExpression builds the compound expression for calling the specified initializers on a struct.
func (db *domBuilder) buildInitializationCompoundExpression(structType typegraph.TypeReference, initializers map[string]codedom.Expression, structValue codedom.Expression, node compilergraph.GraphNode) codedom.Expression {
// Create a variable to hold the struct instance.
structInstanceVarName := db.generateScopeVarName(node)
// Build the assignment expressions.
assignmentExpressions := make([]codedom.Expression, len(initializers))
var index = 0
for fieldName, initializer := range initializers {
member, found := structType.ResolveMember(fieldName, typegraph.MemberResolutionInstance)
if !found {
panic("Member not found in struct initializer construction")
}
assignmentExpressions[index] =
codedom.MemberAssignment(member,
codedom.MemberReference(
codedom.LocalReference(structInstanceVarName, node),
member,
node),
initializer,
node)
index = index + 1
}
// Return a compound expression that takes in the struct value and the assignment expressions,
// executes them, and returns the struct value.
return codedom.CompoundExpression(structInstanceVarName, structValue, assignmentExpressions, codedom.LocalReference(structInstanceVarName, node), node)
}
// buildAssignmentExpression builds an assignment expression for assigning the given value to the target node.
func (db *domBuilder) buildAssignmentExpression(targetNode compilergraph.GraphNode, value codedom.Expression, basisNode compilergraph.GraphNode) codedom.Expression {
targetScope, _ := db.scopegraph.GetScope(targetNode)
namedReference, _ := db.scopegraph.GetReferencedName(targetScope)
if namedReference.IsLocal() {
return codedom.LocalAssignment(namedReference.Name(), value, basisNode)
} else {
member, _ := namedReference.Member()
return codedom.MemberAssignment(member, db.buildExpression(targetNode), value, basisNode)
}
}