diff --git a/boot/semantic.cc b/boot/semantic.cc
index 6735976..ae1157d 100644
--- a/boot/semantic.cc
+++ b/boot/semantic.cc
@@ -69,5 +69,66 @@ namespace boot
{
return this;
}
+
+ void declaration_visitor::visit(program *program)
+ {
+ for (type_definition *const type : program->types)
+ {
+ this->unresolved.insert({ type->identifier, new alias_type() });
+ }
+ for (type_definition *const type : program->types)
+ {
+ type->accept(this);
+ }
+ }
+
+ void declaration_visitor::visit(type_definition *definition)
+ {
+ auto unresolved_declaration = this->unresolved.at(definition->identifier);
+
+ definition->body().accept(this);
+
+ if (this->current_type != nullptr)
+ {
+ unresolved_declaration->reference = this->current_type;
+ }
+ this->current_type = nullptr;
+ }
+
+ void declaration_visitor::visit(primitive_type_expression *type)
+ {
+ auto unresolved_alias = this->unresolved.find(type->name);
+
+ if (unresolved_alias != this->unresolved.end())
+ {
+ this->current_type = unresolved_alias->second;
+ }
+ else
+ {
+ this->current_type = new primitive_type(type->name);
+ }
+ }
+
+ void declaration_visitor::visit(array_type_expression *type)
+ {
+ }
+
+ void declaration_visitor::visit(pointer_type_expression *type)
+ {
+ }
+
+ void declaration_visitor::visit(record_type_expression *type)
+ {
+ this->current_type = new record_type();
+ }
+
+ void declaration_visitor::visit(union_type_expression *type)
+ {
+ this->current_type = new union_type();
+ }
+
+ void declaration_visitor::visit(procedure_type_expression *type)
+ {
+ }
}
}
diff --git a/gcc/elna-generic.cc b/gcc/elna-generic.cc
index 3ee4f94..33af896 100644
--- a/gcc/elna-generic.cc
+++ b/gcc/elna-generic.cc
@@ -38,19 +38,7 @@ namespace elna
{
namespace gcc
{
- declaration_visitor::declaration_visitor(std::shared_ptr<symbol_table> symbol_table)
- : symbols(symbol_table)
- {
- this->symbols->enter("Int", elna_int_type_node);
- this->symbols->enter("Word", elna_word_type_node);
- this->symbols->enter("Char", elna_char_type_node);
- this->symbols->enter("Bool", elna_bool_type_node);
- this->symbols->enter("Byte", elna_byte_type_node);
- this->symbols->enter("Float", elna_float_type_node);
- this->symbols->enter("String", elna_string_type_node);
- }
-
- tree declaration_visitor::get_inner_alias(const boot::alias_type& t)
+ static tree get_inner_alias(std::shared_ptr<symbol_table> symbol_table, const boot::alias_type& t)
{
if (t.reference == nullptr)
{
@@ -58,11 +46,11 @@ namespace gcc
}
else if (auto reference = t.reference->is_primitive())
{
- return this->symbols->lookup(reference->identifier);
+ return symbol_table->lookup(reference->identifier);
}
else if (auto reference = t.reference->is_alias())
{
- return get_inner_alias(*reference);
+ return get_inner_alias(symbol_table, *reference);
}
else if (auto reference = t.reference->is_record())
{
@@ -75,75 +63,16 @@ namespace gcc
return NULL_TREE;
}
- boot::type *declaration_visitor::build_type(boot::type_expression *type_expression)
+ void do_semantic_analysis(std::shared_ptr<symbol_table> symbols, std::unique_ptr<boot::program>& ast)
{
- if (auto alias_node = type_expression->is_primitive())
- {
- return this->unresolved.at(alias_node->name);
- }
- else if (auto alias_node = type_expression->is_record())
- {
- return build_record(alias_node.get());
- }
- else if (auto alias_node = type_expression->is_union())
- {
- return build_union(alias_node.get());
- }
- return nullptr;
- }
+ boot::declaration_visitor declaration_visitor;
- boot::record_type *declaration_visitor::build_record(boot::record_type_expression *type_expression)
- {
- return new boot::record_type();
- }
-
- boot::union_type *declaration_visitor::build_union(boot::union_type_expression *type_expression)
- {
- return new boot::union_type();
- }
-
- void declaration_visitor::visit(boot::program *program)
- {
- for (boot::type_definition *const type : program->types)
+ declaration_visitor.visit(ast.get());
+ for (auto unresolved : declaration_visitor.unresolved)
{
- type->accept(this);
+ auto inner_alias = elna::gcc::get_inner_alias(symbols, *unresolved.second);
+ symbols->enter(unresolved.first, inner_alias);
}
- for (boot::type_definition *const type : program->types)
- {
- auto unresolved_declaration = this->unresolved.at(type->identifier);
-
- if (auto alias_node = type->body().is_primitive())
- {
- auto unresolved_alias = this->unresolved.find(alias_node->name);
-
- if (unresolved_alias != this->unresolved.end())
- {
- unresolved_declaration->reference = unresolved_alias->second;
- }
- else
- {
- unresolved_declaration->reference = new boot::primitive_type(alias_node->name);
- }
- }
- else if (auto alias_node = type->body().is_record())
- {
- unresolved_declaration->reference = build_record(alias_node.get());
- }
- else if (auto alias_node = type->body().is_union())
- {
- unresolved_declaration->reference = build_union(alias_node.get());
- }
- }
- for (auto unresolved : this->unresolved)
- {
- auto inner_alias = get_inner_alias(*unresolved.second);
- this->symbols->enter(unresolved.first, inner_alias);
- }
- }
-
- void declaration_visitor::visit(boot::type_definition *definition)
- {
- this->unresolved.insert({ definition->identifier, new boot::alias_type() });
}
generic_visitor::generic_visitor(std::shared_ptr<symbol_table> symbol_table)
diff --git a/gcc/elna1.cc b/gcc/elna1.cc
index 5713719..07d8a31 100644
--- a/gcc/elna1.cc
+++ b/gcc/elna1.cc
@@ -90,10 +90,17 @@ static void elna_parse_file(const char *filename)
{
std::shared_ptr<elna::gcc::symbol_table> symbol_table = std::make_shared<elna::gcc::symbol_table>();
- elna::gcc::declaration_visitor declaration_visitor{ symbol_table };
+ symbol_table->enter("Int", elna_int_type_node);
+ symbol_table->enter("Word", elna_word_type_node);
+ symbol_table->enter("Char", elna_char_type_node);
+ symbol_table->enter("Bool", elna_bool_type_node);
+ symbol_table->enter("Byte", elna_byte_type_node);
+ symbol_table->enter("Float", elna_float_type_node);
+ symbol_table->enter("String", elna_string_type_node);
+
+ elna::gcc::do_semantic_analysis(symbol_table, driver.tree);
elna::gcc::generic_visitor generic_visitor{ symbol_table };
- declaration_visitor.visit(driver.tree.get());
generic_visitor.visit(driver.tree.get());
}
linemap_add(line_table, LC_LEAVE, 0, NULL, 0);
diff --git a/include/elna/boot/semantic.h b/include/elna/boot/semantic.h
index de6030a..c88f802 100644
--- a/include/elna/boot/semantic.h
+++ b/include/elna/boot/semantic.h
@@ -17,6 +17,9 @@ along with GCC; see the file COPYING3. If not see
#include <string>
#include <vector>
+#include <unordered_map>
+
+#include "elna/boot/ast.h"
namespace elna
{
@@ -71,5 +74,24 @@ namespace boot
union_type *is_union() override;
};
+
+ class declaration_visitor final : public empty_visitor
+ {
+ type *current_type{ nullptr };
+
+ public:
+ std::unordered_map<std::string, alias_type *> unresolved;
+
+ declaration_visitor() = default;
+
+ void visit(primitive_type_expression *type) override;
+ void visit(array_type_expression *type) override;
+ void visit(pointer_type_expression *type) override;
+ void visit(program *program) override;
+ void visit(type_definition *definition) override;
+ void visit(record_type_expression *type) override;
+ void visit(union_type_expression *type) override;
+ void visit(procedure_type_expression *type) override;
+ };
}
}
diff --git a/include/elna/gcc/elna-generic.h b/include/elna/gcc/elna-generic.h
index 4f4c635..2dfb2d9 100644
--- a/include/elna/gcc/elna-generic.h
+++ b/include/elna/gcc/elna-generic.h
@@ -28,29 +28,13 @@ along with GCC; see the file COPYING3. If not see
#include "tree.h"
#include "tree-iterator.h"
-#include <unordered_map>
#include <string>
namespace elna
{
namespace gcc
{
- class declaration_visitor final : public boot::empty_visitor
- {
- std::shared_ptr<symbol_table> symbols;
- std::unordered_map<std::string, boot::alias_type *> unresolved;
-
- boot::type *build_type(boot::type_expression *type_expression);
- boot::record_type *build_record(boot::record_type_expression *type_expression);
- boot::union_type *build_union(boot::union_type_expression *type_expression);
- tree get_inner_alias(const boot::alias_type& t);
-
- public:
- declaration_visitor(std::shared_ptr<symbol_table> symbol_table);
-
- void visit(boot::program *program) override;
- void visit(boot::type_definition *definition) override;
- };
+ void do_semantic_analysis(std::shared_ptr<symbol_table> symbols, std::unique_ptr<boot::program>& ast);
class generic_visitor final : public boot::empty_visitor
{