Fix: Eliminate symres phase

build.bat

@@ -1,7 +1,7 @@
 @echo off
 
 REM Compile the compiler
-set SOURCE_FILES=compiler/src/library_main.c compiler/cli/main.c compiler/src/astnodes.c compiler/src/builtins.c compiler/src/checker.c compiler/src/clone.c compiler/src/doc.c compiler/src/entities.c compiler/src/errors.c compiler/src/lex.c compiler/src/parser.c compiler/src/symres.c compiler/src/types.c compiler/src/utils.c compiler/src/wasm_emit.c compiler/src/wasm_runtime.c compiler/src/extensions.c
+set SOURCE_FILES=compiler/src/library_main.c compiler/cli/main.c compiler/src/astnodes.c compiler/src/builtins.c compiler/src/checker.c compiler/src/clone.c compiler/src/doc.c compiler/src/entities.c compiler/src/errors.c compiler/src/lex.c compiler/src/parser.c compiler/src/types.c compiler/src/utils.c compiler/src/wasm_emit.c compiler/src/wasm_runtime.c compiler/src/extensions.c
 
 if "%1" == "1" (
     set FLAGS=/Od /MTd /Z7
@@ -23,7 +23,7 @@ if %ERRORLEVEL% neq 0 (
     exit /b %ERRORLEVEL%
 )
 
-set SOURCE_FILES=compiler/src/library_main.c compiler/src/astnodes.c compiler/src/builtins.c compiler/src/checker.c compiler/src/clone.c compiler/src/doc.c compiler/src/entities.c compiler/src/errors.c compiler/src/lex.c compiler/src/parser.c compiler/src/symres.c compiler/src/types.c compiler/src/utils.c compiler/src/wasm_emit.c compiler/src/wasm_runtime.c compiler/src/extensions.c
+set SOURCE_FILES=compiler/src/library_main.c compiler/src/astnodes.c compiler/src/builtins.c compiler/src/checker.c compiler/src/clone.c compiler/src/doc.c compiler/src/entities.c compiler/src/errors.c compiler/src/lex.c compiler/src/parser.c compiler/src/types.c compiler/src/utils.c compiler/src/wasm_emit.c compiler/src/wasm_runtime.c compiler/src/extensions.c
 cl.exe %FLAGS% /Icompiler/include /std:c17 /TC %SOURCE_FILES% /link /DLL /IGNORE:4217 %LINK_OPTIONS% /OUT:onyx.dll
 
 REM Don't continue if we had compilation errors. This prevents CI to succeed.

compiler/build.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-C_FILES="library_main astnodes builtins checker clone doc entities errors lex parser symres types utils wasm_emit extensions "
+C_FILES="library_main astnodes builtins checker clone doc entities errors lex parser types utils wasm_emit extensions "
 LIBS="-lpthread -ldl -lm"
 INCLUDES="-I./include -I../shared/include -I../shared/include/dyncall"
 

compiler/cli/main.c

@@ -588,7 +588,7 @@ static char *get_description_for_subcommand(char *path) {
         int previous_cursor = cursor;
         int name_length = uleb128_to_uint(d, &cursor);
 
-        if (strncmp("onyx-command-description", &d[cursor], name_length)) {
+        if (strncmp("onyx-command-description", (const char *) &d[cursor], name_length)) {
             cursor = previous_cursor + section_length;
             continue;
         }
@@ -932,13 +932,19 @@ int main(int argc, char *argv[]) {
             case ONYX_EVENT_ALL_TYPES_CHECKED:
                 break;
 
+            case ONYX_EVENT_PHASE_START:
+                break;
+
             case ONYX_EVENT_SYMBOL_DEFINED:
                 // bh_printf("DEFINED SYMBOL AT %s:%d,%d\n",
                 //     onyx_event_field_str(ctx, i, "filename"),
                 //     onyx_event_field_int(ctx, i, "line"),
                 //     onyx_event_field_int(ctx, i, "column")
                 // );
                 break;
+
+            case ONYX_EVENT_UNKNOWN:
+                break;
             }
         }
     }
@@ -959,8 +965,8 @@ int main(int argc, char *argv[]) {
 
         printf("\nStatistics:\n");
         printf("    Time taken: %lf ms\n", (double) duration);
-        printf("    Processed %llu lines (%f lines/second).\n", lines, lines_per_sec);
-        printf("    Processed %llu tokens (%f tokens/second).\n", tokens, tokens_per_sec);
+        printf("    Processed %d lines (%f lines/second).\n", lines, lines_per_sec);
+        printf("    Processed %d tokens (%f tokens/second).\n", tokens, tokens_per_sec);
         printf("\n");
     }
 

compiler/include/astnodes.h

@@ -284,8 +284,6 @@ typedef enum AstFlags {
     Ast_Flag_Address_Taken         = BH_BIT(7),
 
     // Type flags
-    Ast_Flag_Type_Is_Resolved      = BH_BIT(8),
-
     Ast_Flag_No_Clone              = BH_BIT(9),
 
     Ast_Flag_Cannot_Take_Addr      = BH_BIT(10),
@@ -327,7 +325,7 @@ typedef enum AstFlags {
 
     Ast_Flag_Constraint_Is_Expression = BH_BIT(28),
 
-    Ast_Flag_Has_Been_Scheduled_For_Emit = BH_BIT(29)
+    Ast_Flag_Has_Been_Scheduled_For_Emit = BH_BIT(29),
 } AstFlags;
 
 typedef enum UnaryOp {
@@ -1489,6 +1487,7 @@ struct AstFunction {
     b32 is_intrinsic       : 1;
 
     b32 named_return_locals_added : 1;
+    b32 ready_for_body_to_be_checked : 1;
 };
 
 struct AstCaptureBlock {
@@ -1521,7 +1520,6 @@ struct AstPolyQuery {
     AstFunction *function_header;
 
     b32 error_on_fail : 1;     // Whether or not to report errors on failing to match.
-    b32 successful_symres : 1; // If something successful happened in symbol resolution
 };
 
 
@@ -1844,7 +1842,6 @@ void entity_heap_add_job(EntityHeap *entities, enum TypeMatch (*func)(Context *,
 // If target_arr is null, the entities will be placed directly in the heap.
 void add_entities_for_node(EntityHeap *entities, bh_arr(Entity *)* target_arr, AstNode* node, Scope* scope, Package* package);
 
-void symres_entity(Context *context, Entity* ent);
 void check_entity(Context *context, Entity* ent);
 void emit_entity(Context *context, Entity* ent);
 
@@ -1915,6 +1912,11 @@ typedef struct OnyxDocInfo {
     u32 next_file_id;
 } OnyxDocInfo;
 
+typedef enum CheckerMode {
+    CM_Dont_Resolve_Symbols    = BH_BIT(1),
+    CM_Dont_Check_Case_Bodies  = BH_BIT(2),
+    CM_Allow_Init_Expressions  = BH_BIT(3),
+} CheckerMode;
 
 typedef struct CheckerData {
     b32 expression_types_must_be_known;
@@ -1928,9 +1930,11 @@ typedef struct CheckerData {
     bh_arr(bh_arr(AstLocal *)) named_return_values_stack;
 
     u32 current_checking_level;
+    CheckerMode mode;
 
     Scope *current_scope;
-    b32 report_unresolved_symbols;
+    bh_arr(Scope *) scope_stack;
+
     b32 resolved_a_symbol;
 } CheckerData;
 

compiler/src/astnodes.c

@@ -588,9 +588,6 @@ b32 convert_numlit_to_type(Context *context, AstNumLit* num, Type* to_type, b32
     return 0;
 }
 
-// TODO: This function should be able return a "yield" condition. There
-// are a couple cases that need to yield in order to be correct, like
-// polymorphic functions with a typeof for the return type.
 TypeMatch unify_node_and_type_(Context *context, AstTyped** pnode, Type* type, b32 permanent) {
     AstTyped* node = *pnode;
     if (type == NULL) return TYPE_MATCH_FAILED;
@@ -773,14 +770,13 @@ TypeMatch unify_node_and_type_(Context *context, AstTyped** pnode, Type* type, b
     // node does not match the given type:
     //
     // If the nodes type is a function type and that function has an automatic return
-    // value placeholder, fill in that placeholder with the actual type.
+    // value placeholder, wait for the return type to be solved by the function first.
     // :AutoReturnType
     if (node_type && node_type->kind == Type_Kind_Function
         && node_type->Function.return_type == context->types.auto_return
         && type->kind == Type_Kind_Function) {
 
-        node_type->Function.return_type = type->Function.return_type;
-        return TYPE_MATCH_SUCCESS;
+        return TYPE_MATCH_YIELD;
     }
 
     // If the node is an auto cast (~~) node, then check to see if the cast is legal
@@ -1555,7 +1551,7 @@ TypeMatch implicit_cast_to_bool(Context *context, AstTyped **pnode) {
     return TYPE_MATCH_YIELD;
 }
 
-static char *sanitize_name(bh_allocator a, const char *name) {
+static char *sanitize_name(bh_allocator a, char *name) {
     if (!name) return name;
 
     char *sanitized = bh_strdup(a, name); 
@@ -1599,7 +1595,7 @@ char* get_function_assembly_name(Context *context, AstFunction* func) {
     if (func->token) {
         return bh_aprintf(context->ast_alloc,
             "unnamed_at_%s_%d",
-            sanitize_name(context->scratch_alloc, func->token->pos.filename),
+            sanitize_name(context->scratch_alloc, (char *) func->token->pos.filename),
             func->token->pos.line);
     }