Definition scope lookup (for variant/enum)
[babeltrace.git] / formats / ctf / metadata / ctf-visitor-generate-io-struct.c
index 3bd4238c8ef4a18a6c67d4e7b159ff48a8ec5218..a6773eeaab4d7d11236fa8c054323afc9605a822 100644 (file)
@@ -31,6 +31,8 @@
 
 #define fprintf_dbg(fd, fmt, args...)  fprintf(fd, "%s: " fmt, __func__, ## args)
 
+#define _cds_list_first_entry(ptr, type, member)       \
+       cds_list_entry((ptr)->next, type, member)
 
 static
 int ctf_visitor_print_type_specifier(FILE *fd, int depth, struct ctf_node *node)
@@ -70,7 +72,10 @@ int ctf_visitor_print_type_specifier(FILE *fd, int depth, struct ctf_node *node)
                fprintf(fd, "bool");
                break;
        case TYPESPEC_COMPLEX:
-               fprintf(fd, "complex");
+               fprintf(fd, "_Complex");
+               break;
+       case TYPESPEC_IMAGINARY:
+               fprintf(fd, "_Imaginary");
                break;
        case TYPESPEC_CONST:
                fprintf(fd, "const");
@@ -201,37 +206,81 @@ struct ctf_stream *trace_stream_lookup(struct ctf_trace *trace, uint64_t stream_
        return g_ptr_array_index(trace->streams, stream_id);
 }
 
+/*
+ * Also add named variant, struct or enum to the current declaration scope.
+ */
 static
 struct ctf_declaration *ctf_declaration_specifier_visit(FILE *fd,
-                                       int depth, struct list_head *head,
-                                       struct type_scope *type_scope,
-                                       struct declaration_scope *declaration_scope)
+               int depth, struct list_head *head,
+               struct declaration_scope *declaration_scope)
 {
+       struct ctf_declaration *declaration;
+       struct node *first;
 
-}
+       first = _cds_list_first_entry(head, struct node, siblings);
 
-/*
- * Use declaration specifier visitor, and add resulting variant, struct
- * or enum to the current type scope.
- */
-static
-int ctf_type_specifier_visit(FILE *fd,
-                       int depth, struct list_head *head,
-                       struct type_scope *type_scope,
-                       struct declaration_scope *declaration_scope)
-{
+       switch (first->type) {
+       case NODE_STRUCT:
+               /*
+                * For named struct (without body), lookup in
+                * declaration scope and create declaration copy.
+                */
+               /* For named struct (with body), create type and add to declaration scope */
+               /* For unnamed struct, create type */
+               break;
+       case NODE_VARIANT:
+               /*
+                * For named variant (without body), lookup in
+                * declaration scope and create declaration copy.
+                */
+               /* For named variant (with body), create type and add to declaration scope */
+               /* For unnamed variant, create type */
+               /* If variant has a tag field specifier, assign tag name. */
+               break;
+       case NODE_ENUM:
+               /*
+                * For named enum (without body), lookup in declaration
+                * scope and create declaration copy.
+                */
+               /* For named enum (with body), create type and add to declaration scope */
+               /* For unnamed enum, create type */
+               /* Enumerations need to have their size/type specifier (< >). */
+               break;
+       case NODE_INTEGER:
+               /*
+                * Create an integer declaration.
+                */
+               break;
+       case NODE_FLOATING_POINT:
+               /*
+                * Create a floating point declaration.
+                */
+               break;
+       case NODE_STRING:
+               /*
+                * Create a string declaration.
+                */
+               break;
+       case NODE_TYPE_SPECIFIER:
+               /*
+                * Lookup named type in typedef declarations (in
+                * declaration scope). Create a copy of the declaration.
+                */
+               break;
 
+       }
 }
 
 static
 int ctf_typedef_declarator_visit(FILE *fd, int depth,
-                               struct list_head *declaration_specifier,
-                               struct node *type_declarator, struct type_scope *type_scope,
-                               struct declaration_scope *declaration_scope)
+               struct list_head *declaration_specifier,
+               struct node *type_declarator,
+               struct declaration_scope *declaration_scope)
 {
        /*
-        * Build the type using declaration specifier, then apply type
-        * declarator, add the resulting type to the current type scope.
+        * Build the type using declaration specifier (creating
+        * declaration from type_specifier), then apply type declarator,
+        * add the resulting type to the current declaration scope.
         */
        cds_list_for_each_entry(iter, declaration_specifier, siblings) {
 
@@ -242,17 +291,16 @@ int ctf_typedef_declarator_visit(FILE *fd, int depth,
 
 static
 int ctf_typedef_visit(FILE *fd, int depth,
-                     struct list_head *declaration_specifier,
-                     struct list_head *type_declarators,
-                     struct type_scope *type_scope,
-                     struct declaration_scope *declaration_scope)
+               struct list_head *declaration_specifier,
+               struct list_head *type_declarators,
+               struct declaration_scope *declaration_scope)
 {
        struct ctf_node *iter;
 
        cds_list_for_each_entry(iter, type_declarators, siblings) {
                ret = ctf_typedef_declarator_visit(fd, depth + 1,
                        &node->u._typedef.declaration_specifier, iter,
-                       type_scope, declaration_scope);
+                       declaration_scope);
                if (ret)
                        return ret;
        }
@@ -261,13 +309,17 @@ int ctf_typedef_visit(FILE *fd, int depth,
 
 static
 int ctf_typealias_visit(FILE *fd, int depth, struct ctf_node *target,
-                       struct ctf_node *alias, struct type_scope *type_scope,
-                       struct declaration_scope *declaration_scope)
+               struct ctf_node *alias,
+               struct declaration_scope *declaration_scope)
 {
-       /* Build target type, check that it is reachable in current type scope. */
+       /*
+        * Build target type, check that it is reachable in current
+        * declaration scope.
+        */
+
        /* Only one type declarator is allowed */
 
-       /* Build alias type, add to current type scope. */
+       /* Build alias type, add to current declaration scope. */
        /* Only one type declarator is allowed */
 }
 
@@ -281,14 +333,14 @@ int ctf_event_declaration_visit(FILE *fd, int depth, struct ctf_node *node, stru
                ret = ctf_typedef_visit(fd, depth + 1,
                                        &node->u._typedef.declaration_specifier,
                                        &node->u._typedef.type_declarators,
-                                       event->type_scope, event->declaration_scope);
+                                       event->declaration_scope);
                if (ret)
                        return ret;
                break;
        case NODE_TYPEALIAS:
                ret = ctf_typealias_visit(fd, depth + 1,
                                &node->u.typealias.target, &node->u.typealias.alias
-                               event->type_scope, event->declaration_scope);
+                               event->declaration_scope);
                if (ret)
                        return ret;
                break;
@@ -332,8 +384,8 @@ int ctf_event_declaration_visit(FILE *fd, int depth, struct ctf_node *node, stru
                                fprintf(stderr, "[error] %s: stream id %" PRIu64 " cannot be found\n", __func__, event->stream_id);
                                return -EINVAL;
                        }
-                       event->declaration_scope = new_declaration_scope(stream->declaration_scope);
-                       if (!event->declaration_scope) {
+                       event->definition_scope = new_definition_scope(stream->definition_scope);
+                       if (!event->definition_scope) {
                                fprintf(stderr, "[error] %s: Error allocating declaration scope\n", __func__);
                                return -EPERM;
                        }
@@ -341,28 +393,30 @@ int ctf_event_declaration_visit(FILE *fd, int depth, struct ctf_node *node, stru
                } else if (!strcmp(left, "context")) {
                        struct declaration *declaration;
 
-                       if (!event->declaration_scope)
+                       if (!event->definition_scope)
                                return -EPERM;
                        declaration = ctf_declaration_specifier_visit(fd, depth,
                                        &node->u.ctf_expression.right,
-                                       event->type_scope, event->declaration_scope);
+                                       event->declaration_scope);
                        if (!declaration)
                                return -EPERM;
                        if (declaration->type->id != CTF_TYPE_STRUCT)
                                return -EPERM;
+                       /* TODO: definition */
                        event->context = container_of(declaration, struct declaration_struct, p);
                } else if (!strcmp(left, "fields")) {
                        struct declaration *declaration;
 
-                       if (!event->declaration_scope)
+                       if (!event->definition_scope)
                                return -EPERM;
                        declaration = ctf_declaration_specifier_visit(fd, depth,
                                        &node->u.ctf_expression.right,
-                                       event->type_scope, event->declaration_scope);
+                                       event->declaration_scope);
                        if (!declaration)
                                return -EPERM;
                        if (declaration->type->id != CTF_TYPE_STRUCT)
                                return -EPERM;
+                       /* TODO: definition */
                        event->fields = container_of(declaration, struct declaration_struct, p);
                }
                free(left);
@@ -378,14 +432,14 @@ int ctf_event_declaration_visit(FILE *fd, int depth, struct ctf_node *node, stru
 
 static
 int ctf_event_visit(FILE *fd, int depth, struct ctf_node *node,
-                   struct type_scope *parent_type_scope, struct ctf_trace *trace)
+                   struct declaration_scope *parent_declaration_scope, struct ctf_trace *trace)
 {
        int ret = 0;
        struct ctf_node *iter;
        struct ctf_event *event;
 
        event = g_new0(struct ctf_event, 1);
-       event->type_scope = new_type_scope(parent_type_scope);
+       event->declaration_scope = new_declaration_scope(parent_declaration_scope);
        cds_list_for_each_entry(iter, &node->u.event.declaration_list, siblings) {
                ret = ctf_event_declaration_visit(fd, depth + 1, iter, event, trace);
                if (ret)
@@ -414,8 +468,8 @@ int ctf_event_visit(FILE *fd, int depth, struct ctf_node *node,
 error:
        declaration_unref(event->fields);
        declaration_unref(event->context);
+       free_definition_scope(event->definition_scope);
        free_declaration_scope(event->declaration_scope);
-       free_type_scope(event->type_scope);
        g_free(event);
        return ret;
 }
@@ -431,14 +485,14 @@ int ctf_stream_declaration_visit(FILE *fd, int depth, struct ctf_node *node, str
                ret = ctf_typedef_visit(fd, depth + 1,
                                        &node->u._typedef.declaration_specifier,
                                        &node->u._typedef.type_declarators,
-                                       stream->type_scope, stream->declaration_scope);
+                                       stream->declaration_scope);
                if (ret)
                        return ret;
                break;
        case NODE_TYPEALIAS:
                ret = ctf_typealias_visit(fd, depth + 1,
                                &node->u.typealias.target, &node->u.typealias.alias
-                               stream->type_scope, stream->declaration_scope);
+                               stream->declaration_scope);
                if (ret)
                        return ret;
                break;
@@ -461,33 +515,36 @@ int ctf_stream_declaration_visit(FILE *fd, int depth, struct ctf_node *node, str
 
                        declaration = ctf_declaration_specifier_visit(fd, depth,
                                        &node->u.ctf_expression.right,
-                                       stream->type_scope, stream->declaration_scope);
+                                       stream->declaration_scope, stream->definition_scope);
                        if (!declaration)
                                return -EPERM;
                        if (declaration->type->id != CTF_TYPE_STRUCT)
                                return -EPERM;
+                       /* TODO: definition */
                        stream->event_header = container_of(declaration, struct declaration_struct, p);
                } else if (!strcmp(left, "event_context")) {
                        struct declaration *declaration;
 
                        declaration = ctf_declaration_specifier_visit(fd, depth,
                                        &node->u.ctf_expression.right,
-                                       stream->type_scope, stream->declaration_scope);
+                                       stream->declaration_scope);
                        if (!declaration)
                                return -EPERM;
                        if (declaration->type->id != CTF_TYPE_STRUCT)
                                return -EPERM;
+                       /* TODO: definition */
                        stream->event_context = container_of(declaration, struct declaration_struct, p);
                } else if (!strcmp(left, "packet_context")) {
                        struct declaration *declaration;
 
                        declaration = ctf_declaration_specifier_visit(fd, depth,
                                        &node->u.ctf_expression.right,
-                                       stream->type_scope, stream->declaration_scope);
+                                       stream->declaration_scope);
                        if (!declaration)
                                return -EPERM;
                        if (declaration->type->id != CTF_TYPE_STRUCT)
                                return -EPERM;
+                       /* TODO: definition */
                        stream->packet_context = container_of(declaration, struct declaration_struct, p);
                }
                free(left);
@@ -503,15 +560,15 @@ int ctf_stream_declaration_visit(FILE *fd, int depth, struct ctf_node *node, str
 
 static
 int ctf_stream_visit(FILE *fd, int depth, struct ctf_node *node,
-                    struct type_scope *parent_type_scope, struct ctf_trace *trace)
+                    struct declaration_scope *parent_declaration_scope, struct ctf_trace *trace)
 {
        int ret = 0;
        struct ctf_node *iter;
        struct ctf_stream *stream;
 
        stream = g_new0(struct ctf_stream, 1);
-       stream->type_scope = new_type_scope(parent_type_scope);
-       stream->declaration_scope = new_declaration_scope(trace->declaration_scope);
+       stream->declaration_scope = new_declaration_scope(parent_declaration_scope);
+       stream->definition_scope = new_definition_scope(trace->definition_scope);
        stream->events_by_id = g_ptr_array_new();
        stream->event_quark_to_id = g_hash_table_new(g_int_hash, g_int_equal);
        cds_list_for_each_entry(iter, &node->u.stream.declaration_list, siblings) {
@@ -534,8 +591,8 @@ error:
        declaration_unref(stream->packet_context);
        g_ptr_array_free(stream->events_by_id, TRUE);
        g_hash_table_free(stream->event_quark_to_id);
+       free_definition_scope(stream->definition_scope);
        free_declaration_scope(stream->declaration_scope);
-       free_type_scope(stream->type_scope);
        g_free(stream);
        return ret;
 }
@@ -550,14 +607,14 @@ int ctf_trace_declaration_visit(FILE *fd, int depth, struct ctf_node *node, stru
                ret = ctf_typedef_visit(fd, depth + 1,
                                        &node->u._typedef.declaration_specifier,
                                        &node->u._typedef.type_declarators,
-                                       trace->type_scope, trace->declaration_scope);
+                                       trace->declaration_scope);
                if (ret)
                        return ret;
                break;
        case NODE_TYPEALIAS:
                ret = ctf_typealias_visit(fd, depth + 1,
                                &node->u.typealias.target, &node->u.typealias.alias
-                               trace->type_scope, trace->declaration_scope);
+                               trace->declaration_scope);
                if (ret)
                        return ret;
                break;
@@ -621,10 +678,10 @@ int ctf_trace_visit(FILE *fd, int depth, struct ctf_node *node, struct ctf_trace
        int ret = 0;
        struct ctf_node *iter;
 
-       if (trace->type_scope)
+       if (trace->declaration_scope)
                return -EEXIST;
-       trace->type_scope = new_type_scope(trace->root_type_scope);
        trace->declaration_scope = new_declaration_scope(trace->root_declaration_scope);
+       trace->definition_scope = new_definition_scope(trace->root_definition_scope);
        trace->streams = g_ptr_array_new();
        cds_list_for_each_entry(iter, &node->u.trace.declaration_list, siblings) {
                ret = ctf_trace_declaration_visit(fd, depth + 1, iter, trace);
@@ -651,8 +708,8 @@ int ctf_trace_visit(FILE *fd, int depth, struct ctf_node *node, struct ctf_trace
 
 error:
        g_ptr_array_free(trace->streams, TRUE);
+       free_definition_scope(stream->definition_scope);
        free_declaration_scope(stream->declaration_scope);
-       free_type_scope(stream->type_scope);
        return ret;
 }
 
@@ -668,7 +725,7 @@ int _ctf_visitor(FILE *fd, int depth, struct ctf_node *node, struct ctf_trace *t
                        ret = ctf_typedef_visit(fd, depth + 1,
                                                &iter->u._typedef.declaration_specifier,
                                                &iter->u._typedef.type_declarators,
-                                               trace->type_scope, trace->declaration_scope);
+                                               trace->declaration_scope);
                        if (ret)
                                return ret;
                }
@@ -676,13 +733,12 @@ int _ctf_visitor(FILE *fd, int depth, struct ctf_node *node, struct ctf_trace *t
                                        siblings) {
                        ret = ctf_typealias_visit(fd, depth + 1,
                                        &iter->u.typealias.target, &iter->u.typealias.alias
-                                       trace->type_scope, trace->declaration_scope);
+                                       trace->declaration_scope);
                        if (ret)
                                return ret;
                }
                cds_list_for_each_entry(iter, &node->u.root.declaration_specifier, siblings) {
-                       ret = ctf_type_specifier_visit(fd, depth, iter,
-                                       trace->root_type_scope,
+                       ret = ctf_declaration_specifier_visit(fd, depth, iter,
                                        trace->root_declaration_scope);
                        if (ret)
                                return ret;
@@ -694,13 +750,13 @@ int _ctf_visitor(FILE *fd, int depth, struct ctf_node *node, struct ctf_trace *t
                }
                cds_list_for_each_entry(iter, &node->u.root.stream, siblings) {
                        ret = ctf_stream_visit(fd, depth + 1, iter,
-                                              trace->type_scope, trace);
+                                              trace->declaration_scope, trace);
                        if (ret)
                                return ret;
                }
                cds_list_for_each_entry(iter, &node->u.root.event, siblings) {
                        ret = ctf_event_visit(fd, depth + 1, iter,
-                                             trace->type_scope, trace);
+                                             trace->declaration_scope, trace);
                        if (ret)
                                return ret;
                }
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