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Working on slices, builtin stuff feels wanky, rewrite gen_simple_decl to

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generate string
This commit is contained in:
Krzosa Karol
2022-06-14 12:00:48 +02:00
parent f189ca381e
commit 946e4082cc
5 changed files with 159 additions and 64 deletions
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3
ast.cpp
View File

@@ -65,7 +65,8 @@ struct Ast{
};
struct Ast_Type;
struct Ast_Expr:Ast{ };
struct Ast_Expr:Ast{
};
#define VALUE_FIELDS \
Ast_Type *type; \

173
ccodegen.cpp
View File

@@ -3,9 +3,10 @@
#define genln(...) do{gen("\n"); gen_indent(); gen(__VA_ARGS__); }while(0)
global S32 global_indent;
global S32 is_inside_struct;
global B32 should_gen_scope_name = false;
function void gen_ast(Ast *ast);
function bool gen_expr(Ast_Expr *ast);
function bool gen_expr(Ast_Expr *ast, Ast_Type *type_of_var = 0);
function void
gen_indent(){
@@ -18,10 +19,20 @@ gen_line(Ast *node){
genln("#line %d", node->pos->line+1);
}
function String
string_scope_name(Allocator *a, Ast_Scope *scope){
String string = {};
if(!should_gen_scope_name) return string;
if(scope->parent_scope) string = string_scope_name(a, scope->parent_scope);
if(scope->name.str) string_fmt(a, "%Q%s_", string, scope->name.str);
return string;
}
function void
gen_scope_name(Ast_Scope *scope){
if(scope->parent_scope) gen_scope_name(scope->parent_scope);
if(scope->name.str) gen("%s_", scope->name.str);
Scratch scratch;
String string = string_scope_name(scratch, scope);
gen("%.*s", (int)string.len, string.str);
}
// @todo: Gen complicated decl
@@ -33,62 +44,91 @@ gen_scope_name(Ast_Scope *scope){
// 3 Going backwards add arrays and pointers in parens
// 4 Add type name on the left side
function void
gen_simple_decl_prefix(Ast_Type *ast, bool scope_names){
function String
string_simple_decl_prefix(Allocator *a, Ast_Type *ast, bool scope_names){
switch(ast->kind){
case TYPE_POINTER: gen_simple_decl_prefix(ast->base, scope_names); gen("*"); break;
case TYPE_ARRAY: gen_simple_decl_prefix(ast->base, scope_names); break;
case TYPE_LAMBDA:break;
case TYPE_ENUM:{
gen_simple_decl_prefix(ast->base, scope_names); break;
case TYPE_POINTER:{
String string = string_simple_decl_prefix(a, ast->base, scope_names);
string = string_fmt(a, "%Q*", string);
return string;
}break;
case TYPE_LAMBDA: return {}; break;
case TYPE_ENUM:
case TYPE_ARRAY: {
return string_simple_decl_prefix(a, ast->base, scope_names);
}break;
case TYPE_SLICE:{
String string = string_simple_decl_prefix(a, ast->base, true);
string = string_fmt(a, "SliceOf%Q", string);
return string;
}break;
case TYPE_STRUCT: {
auto constant = (Ast_Decl *)ast->ast;
auto name = constant->name;
if(scope_names) gen_scope_name(constant->parent_scope);
gen("%s ", name.str);
String string = string_fmt(a, "%Q ", name);
String sc = {};
if(scope_names) sc = string_scope_name(a, constant->parent_scope);
return string_fmt(a, "%Q%Q", sc, string);
}break;
default: {
gen("%s ", name(ast));
String string = string_fmt(a, "%s ", name(ast));
return string;
}
}
return {};
}
function void
gen_simple_decl_postfix(Ast_Type *ast, bool scope_names){
function String
string_simple_decl_postfix(Allocator *a, Ast_Type *ast, bool scope_names){
switch(ast->kind){
case TYPE_POINTER: gen_simple_decl_postfix(ast->base, scope_names); break;
case TYPE_ARRAY:
gen("[");
if(ast->arr.size != ARRAY_SIZE_SLICE)
gen("%d", (int)ast->arr.size);
gen("]");
gen_simple_decl_postfix(ast->arr.base, scope_names); break;
case TYPE_POINTER:
return string_simple_decl_postfix(a, ast->base, scope_names);
break;
case TYPE_ARRAY:{
String result = string_simple_decl_postfix(a, ast->arr.base, scope_names);
String string = string_fmt(a, "[%d]%Q", ast->arr.size, result);
return string;
}break;
case TYPE_LAMBDA:break;
case TYPE_ENUM: case TYPE_STRUCT:break;
default: name(ast);
case TYPE_SLICE: case TYPE_ENUM: case TYPE_STRUCT:break;
default:break;
// default: return string_from_cstring((char *)name(ast));
}
return {};
}
function String
string_simple_decl(Allocator *a, Ast_Type *ast, Intern_String name = {}, Ast_Scope *scope = 0, bool scope_names = true){
if(ast->kind == TYPE_LAMBDA) {
String prefix = string_simple_decl_prefix(a, ast->func.ret, scope_names);
String string = string_fmt(a, "%Q(*%Q)(", prefix, name);
For(ast->func.args){
String prefix_arg = string_simple_decl_prefix(a, it, scope_names);
string = string_fmt(a, "%Q%Q", string, prefix_arg);
if(&it != ast->func.args.end() - 1)
string = string_fmt(a, "%Q, ", string);
}
string = string_fmt(a, "%Q)", string);
return string;
}
else{
String string = string_simple_decl_prefix(a, ast, scope_names);
if(name.len) {
if(scope && scope_names)
string = string_fmt(a, "%Q%Q", string, string_scope_name(a, scope));
string = string_fmt(a, "%Q%Q", string, name);
}
String postfix = string_simple_decl_postfix(a, ast, scope_names);
string = string_fmt(a, "%Q%Q", string, postfix);
return string;
}
}
function void
gen_simple_decl(Ast_Type *ast, Intern_String name = {}, Ast_Scope *scope = 0, bool scope_names = true){
if(ast->kind == TYPE_LAMBDA) {
gen_simple_decl_prefix(ast->func.ret, scope_names);
gen("(*%s)(", name.str);
For(ast->func.args){
gen_simple_decl_prefix(it, scope_names);
if(&it != ast->func.args.end() - 1) gen(", ");
}
gen(")");
}
else{
gen_simple_decl_prefix(ast, scope_names);
if(name.len) {
if(scope && scope_names) gen_scope_name(scope);
gen("%s", name.str);
}
gen_simple_decl_postfix(ast, scope_names);
}
Scratch scratch;
String string = string_simple_decl(scratch, ast, name, scope, scope_names);
gen("%.*s", (int)string.len, string.str);
}
function B32
@@ -143,7 +183,7 @@ gen_var(Ast_Decl *decl, B32 emit_value, B32 scope_names){
if(decl->expr){
gen(" = ");
gen_expr(decl->expr);
gen_expr(decl->expr, decl->type);
} else { // Default zero
if(is_numeric(decl->type)){
gen(" = 0");
@@ -154,7 +194,7 @@ gen_var(Ast_Decl *decl, B32 emit_value, B32 scope_names){
}
function void
gen_lambda(Intern_String name, Ast_Lambda *lambda){
gen_lambda(Intern_String name, Ast_Lambda *lambda, B32 generate_block = true){
bool is_foreign = is_flag_set(lambda->flags, AST_FOREIGN);
if(name == pctx->intern("main"_s)){
is_foreign = true;
@@ -163,18 +203,19 @@ gen_lambda(Intern_String name, Ast_Lambda *lambda){
gen("(");
For(lambda->args){
gen_var(it, DONT_EMIT_VALUE, true);
if(&it != (lambda->args.end() - 1)) gen(", ");
if(&it != (lambda->args.end() - 1))
gen(", ");
}
gen(")");
if(lambda->scope){
if(generate_block && lambda->scope){
gen_stmt_scope(lambda->scope);
}
else gen(";");
}
function bool
gen_expr(Ast_Expr *ast){
gen_expr(Ast_Expr *ast, Ast_Type *type_of_var){
switch(ast->kind){
CASE(IDENT, Atom){
if(node->resolved_decl->kind == AST_MODULE_NAMESPACE || node->resolved_decl->kind == AST_FILE_NAMESPACE)
@@ -184,8 +225,14 @@ gen_expr(Ast_Expr *ast){
if(is_flag_set(node->resolved_decl->lambda->flags, AST_FOREIGN))
print_scope = false;
}
if(type_of_var && is_slice(type_of_var) && is_array(node->resolved_decl->type)){
gen("{%d, ", (int)node->resolved_decl->type->arr.size);
if(print_scope) gen_scope_name(node->resolved_decl->parent_scope);
gen("%s}", node->intern_val.str);
} else {
if(print_scope) gen_scope_name(node->resolved_decl->parent_scope);
gen("%s", node->intern_val.str);
}
BREAK();
}
@@ -256,6 +303,18 @@ gen_expr(Ast_Expr *ast){
}
CASE(CALL, Call){
if(node->name->kind == AST_IDENT){
auto ident = (Ast_Atom *)node->name;
if(ident->intern_val == pctx->intern("len"_s)){
if(is_slice(ident->type)){
Ast_Call_Item *arg = node->exprs[0];
gen_expr(arg->item);
gen(".len");
return true;
} else invalid_codepath;
}
}
gen_expr(node->name);
gen("(");
For(node->exprs){
@@ -359,7 +418,7 @@ gen_ast(Ast *ast){
}
CASE(STRUCT, Decl){
gen("typedef struct ");
gen("struct ");
gen_scope_name(node->parent_scope);
gen("%s{", node->name.str);
global_indent++;
@@ -371,15 +430,13 @@ gen_ast(Ast *ast){
is_inside_struct--;
global_indent--;
genln("}");
gen_scope_name(node->parent_scope);
gen("%s;", node->name.str);
genln("};");
BREAK();
}
CASE(TYPE, Decl){
gen("// Type %s = ", node->name.str);
gen_expr(node->expr);
gen_simple_decl(node->type_val);
BREAK();
}
@@ -613,6 +670,20 @@ typedef struct String{
)==");
#endif
For(pctx->ordered_decls){
if(it->kind == AST_STRUCT){
if(it->type && it->type->kind == TYPE_TYPE && is_slice(it->type_val)){
genln("typedef struct struct ");
gen_simple_decl(it->type_val);
gen(";");
} else{
genln("typedef struct struct %s;", it->name.str);
}
} else if(it->kind == AST_LAMBDA){
genln("");
gen_lambda(it->name, it->lambda, false);
}
}
For(pctx->ordered_decls){
genln("");

1
compiler.h
View File

@@ -3,6 +3,7 @@ struct Ast_Decl;
struct Ast_File_Namespace;
struct Ast_File;
struct Ast_Module;
struct Ast_Type;
function Ast_Module *ast_module(Intern_String filename);
function void insert_builtin_types_into_scope(Ast_Scope *p);

23
typechecking.cpp
View File

@@ -707,7 +707,24 @@ resolve_expr(Ast_Expr *ast, Resolve_Flag flags, Ast_Type *compound_context){
if(node->expr){
node->type = type_array(type.type_val, bigint_as_unsigned(&expr.big_int_val));
} else{
node->type = type_slice(type.type_val);
node->type = type_slice(type.type_val, node);
{ // @c_backend
Ast_Scope *scope = ast_decl_scope(0, pctx->heap, (Ast_File *)node->parent_scope->file);
Ast_Decl *len_var = ast_var(0, 0, pctx->intern("len"_s), 0);
len_var->type = type_s64;
scope->decls.add(len_var);
Ast_Decl *pointer_var = ast_var(0, 0, pctx->intern("data"_s), 0);
pointer_var->type = type.type_val;
scope->decls.add(pointer_var);
Ast_Decl *struct_decl = ast_struct(0, scope);
struct_decl->name = pctx->intern("SliceOf"_s);
struct_decl->type = type_type;
struct_decl->type_val = node->type;
pctx->ordered_decls.add(struct_decl);
}
}
@@ -847,10 +864,14 @@ resolve_expr(Ast_Expr *ast, Resolve_Flag flags, Ast_Type *compound_context){
Ast_Call_Item *arg = node->exprs[0];
if(arg->name || arg->index) compiler_error(node->pos, "No named or indexed arguments expected");
Operand op = resolve_expr(arg->item, AST_CANT_BE_NULL);
ident->type = op.type;
if(is_array(op.type)){
Value val = value_int(op.type->arr.size);
rewrite_into_const(node, Ast_Call, val);
return operand_const_rvalue(val);
} else if(is_slice(op.type)){
return operand_rvalue(type_s64);
} else compiler_error(node->pos, "Invalid argument");
}
}

3
typechecking.h
View File

@@ -134,7 +134,7 @@ type_pointer(Ast_Type *base){
}
function Ast_Type *
type_slice(Ast_Type *base){
type_slice(Ast_Type *base, Ast *ast){
U64 hash_base = hash_ptr(base);
U64 hash = hash_mix(hash_base, hash_u64(ARRAY_SIZE_SLICE));
Ast_Type *result = (Ast_Type *)map_get(&pctx->type_map, hash);
@@ -148,6 +148,7 @@ type_slice(Ast_Type *base){
result = type_new(pctx->perm, TYPE_SLICE, sizeof(Slice), alignof(Slice));
result->arr.base = base;
result->arr.slice_hash = hash;
result->ast = ast;
return result;
}