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#include <ctype.h>
#include <gc/cord.h>
#include <gc.h>
#include <stdio.h>
#include "ast.h"
#include "builtins/text.h"
#include "compile.h"
#include "environment.h"
#include "typecheck.h"
#include "builtins/util.h"
static bool is_plain_data(env_t *env, type_t *t)
{
switch (t->tag) {
case BoolType: case IntType: case NumType: case PointerType: case FunctionType:
return true;
case StructType: {
for (arg_t *arg = Match(t, StructType)->fields; arg; arg = arg->next) {
if (!is_plain_data(env, get_arg_type(env, arg)))
return false;
}
return true;
}
case EnumType: {
for (tag_t *tag = Match(t, EnumType)->tags; tag; tag = tag->next) {
if (!is_plain_data(env, tag->type))
return false;
}
return true;
}
default:
return false;
}
}
static CORD compile_str_method(env_t *env, ast_t *ast)
{
auto def = Match(ast, StructDef);
CORD str_func = CORD_asprintf("static CORD %s$as_text(%s_t *obj, bool use_color) {\n"
"\tif (!obj) return \"%s\";\n", def->name, def->name, def->name);
if (def->secret) {
CORD_appendf(&str_func, "\treturn use_color ? \"\\x1b[0;1m%s\\x1b[m(\\x1b[2m...\\x1b[m)\" : \"%s(...)\";\n}",
def->name, def->name);
} else {
CORD_appendf(&str_func, "\treturn CORD_all(use_color ? \"\\x1b[0;1m%s\\x1b[m(\" : \"%s(\"", def->name, def->name);
for (arg_ast_t *field = def->fields; field; field = field->next) {
type_t *field_type = get_arg_ast_type(env, field);
CORD field_str = expr_as_text(env, CORD_cat("obj->", field->name), field_type, "use_color");
CORD_appendf(&str_func, ", \"%s=\", %r", field->name, field_str);
if (field->next) CORD_appendf(&str_func, ", \", \"");
}
CORD_appendf(&str_func, ", \")\");\n}\n");
}
return str_func;
}
static CORD compile_compare_method(env_t *env, ast_t *ast)
{
auto def = Match(ast, StructDef);
CORD cmp_func = CORD_all("static int ", def->name, "$compare(const ", def->name, "_t *x, const ", def->name,
"_t *y, const TypeInfo *info) {\n"
"(void)info;\n",
"int diff;\n");
for (arg_ast_t *field = def->fields; field; field = field->next) {
type_t *field_type = get_arg_ast_type(env, field);
switch (field_type->tag) {
case BoolType: case IntType: case NumType: case PointerType: case FunctionType:
cmp_func = CORD_all(cmp_func, "diff = (x->", field->name, " > y->", field->name, ") - (x->", field->name, " < y->", field->name, ");");
break;
case TextType:
cmp_func = CORD_all(cmp_func, "diff = CORD_cmp(x->", field->name, ", y->", field->name, ");");
break;
default:
cmp_func = CORD_all(cmp_func, "diff = generic_compare(&x->", field->name, ", &y->", field->name, ", ",
compile_type_info(env, field_type), ");\n");
break;
}
cmp_func = CORD_all(cmp_func, "if (diff != 0) return diff;\n");
}
cmp_func = CORD_all(cmp_func, "return 0;\n}\n");
return cmp_func;
}
static CORD compile_equals_method(env_t *env, ast_t *ast)
{
auto def = Match(ast, StructDef);
CORD eq_func = CORD_all("static bool ", def->name, "$equal(const ", def->name, "_t *x, const ", def->name,
"_t *y, const TypeInfo *info) {\n"
"(void)info;\n");
for (arg_ast_t *field = def->fields; field; field = field->next) {
type_t *field_type = get_arg_ast_type(env, field);
switch (field_type->tag) {
case BoolType: case IntType: case NumType: case PointerType: case FunctionType:
eq_func = CORD_all(eq_func, "if (x->", field->name, " != y->", field->name, ") return no;\n");
break;
case TextType:
eq_func = CORD_all(eq_func, "if (CORD_cmp(x->", field->name, ", y->", field->name, ") != 0) return no;\n");
break;
default:
eq_func = CORD_all(eq_func, "if (!generic_equal(&x->", field->name, ", &y->", field->name, ", ",
compile_type_info(env, field_type), ")) return no;\n");
break;
}
}
eq_func = CORD_all(eq_func, "return yes;\n}\n");
return eq_func;
}
static CORD compile_hash_method(env_t *env, ast_t *ast)
{
auto def = Match(ast, StructDef);
CORD hash_func = CORD_all("static uint32_t ", def->name, "$hash(const ", def->name, "_t *obj, const TypeInfo *info) {\n"
"(void)info;\n"
"uint32_t field_hashes[] = {");
for (arg_ast_t *field = def->fields; field; field = field->next) {
type_t *field_type = get_arg_ast_type(env, field);
hash_func = CORD_all(hash_func, "\ngeneric_hash(&obj->", field->name, ", ", compile_type_info(env, field_type), "),");
}
hash_func = CORD_all(hash_func, "};\n"
"uint32_t hash;\n"
"halfsiphash(&field_hashes, sizeof(field_hashes), SSS_HASH_VECTOR, (uint8_t*)&hash, sizeof(hash));\n"
"return hash;\n}\n");
return hash_func;
}
void compile_struct_def(env_t *env, ast_t *ast)
{
auto def = Match(ast, StructDef);
CORD_appendf(&env->code->typedefs, "typedef struct %s_s %s_t;\n", def->name, def->name);
CORD_appendf(&env->code->typedefs, "#define %s(...) ((%s_t){__VA_ARGS__})\n", def->name, def->name);
CORD_appendf(&env->code->typecode, "struct %s_s {\n", def->name);
for (arg_ast_t *field = def->fields; field; field = field->next) {
type_t *field_t = get_arg_ast_type(env, field);
CORD type_code = compile_type(field_t);
CORD_appendf(&env->code->typecode, "%r %s%s;\n", type_code, field->name,
CORD_cmp(type_code, "Bool_t") ? "" : ":1");
}
CORD_appendf(&env->code->typecode, "};\n");
// Typeinfo:
CORD_appendf(&env->code->typedefs, "extern const TypeInfo %s;\n", def->name);
type_t *t = Table_str_get(*env->types, def->name);
CORD typeinfo = CORD_asprintf("public const TypeInfo %s = {%zu, %zu, {.tag=CustomInfo, .CustomInfo={",
def->name, type_size(t), type_align(t));
typeinfo = CORD_all(typeinfo, ".as_text=(void*)", def->name, "$as_text, .compare=(void*)", def->name, "$compare, ");
env->code->funcs = CORD_all(env->code->funcs, compile_str_method(env, ast), compile_compare_method(env, ast));
if (!t || !is_plain_data(env, t)) {
env->code->funcs = CORD_all(
env->code->funcs, compile_equals_method(env, ast),
compile_hash_method(env, ast));
typeinfo = CORD_all(
typeinfo,
".equal=(void*)", def->name, "$equal, "
".hash=(void*)", def->name, "$hash");
}
typeinfo = CORD_cat(typeinfo, "}}};\n");
env->code->typeinfos = CORD_all(env->code->typeinfos, typeinfo);
compile_namespace(env, def->name, def->namespace);
}
// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
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