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authorBruce Hill <bruce@bruce-hill.com>2025-03-21 21:43:51 -0400
committerBruce Hill <bruce@bruce-hill.com>2025-03-21 21:43:51 -0400
commitdcf266228512e100e779fe72f2d4e9ebb605ffe6 (patch)
tree6fb3cac1ee3647f08bca219949ed8dc61b5861f2 /repl.c
parent9acea1807f5945c55445a16259386e4979203a1e (diff)
Move files into src/ and build into build/
Diffstat (limited to 'repl.c')
-rw-r--r--repl.c552
1 files changed, 0 insertions, 552 deletions
diff --git a/repl.c b/repl.c
deleted file mode 100644
index 39fe30fa..00000000
--- a/repl.c
+++ /dev/null
@@ -1,552 +0,0 @@
-// A Read-Evaluate-Print-Loop
-#include <dlfcn.h>
-#include <setjmp.h>
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "stdlib/tomo.h"
-#include "stdlib/util.h"
-#include "typecheck.h"
-#include "parse.h"
-
-typedef union {
- int8_t i8;
- int16_t i16;
- int32_t i32;
- int64_t i64;
- Int_t integer;
- double n64;
- float n32;
-} number_t;
-
-static jmp_buf on_err;
-
-static void run(env_t *env, ast_t *ast);
-static void eval(env_t *env, ast_t *ast, void *dest);
-
-typedef struct {
- type_t *type;
- void *value;
-} repl_binding_t;
-
-static PUREFUNC repl_binding_t *get_repl_binding(env_t *env, const char *name)
-{
- repl_binding_t *b = Table$str_get(*env->locals, name);
- return b;
-}
-
-void repl(void)
-{
- env_t *env = global_env();
- void *dl = dlopen("libtomo.so", RTLD_LAZY);
- if (!dl) errx(1, "I couldn't find libtomo.so in your library paths");
-
- size_t buf_size = 0;
- char *line = NULL;
- ssize_t len = 0;
-
- if (setjmp(on_err))
- printf("\n");
-
- printf("\x1b[33;1m>>\x1b[m ");
- fflush(stdout);
-
- while ((len=getline(&line, &buf_size, stdin)) >= 0) {
- if (len > 1) {
- char *code = line;
- if (starts_with(line, "if ") || starts_with(line, "for ") || starts_with(line, "while ")
- || starts_with(line, "func ") || starts_with(line, "struct ") || starts_with(line, "lang ")) {
- printf("\x1b[33;1m..\x1b[m ");
- fflush(stdout);
- code = GC_strdup(line);
- while ((len=getline(&line, &buf_size, stdin)) >= 0) {
- if (len == 1) break;
- code = heap_strf("%s%s", code, line);
- printf("\x1b[33;1m..\x1b[m ");
- fflush(stdout);
- }
- } else {
- code = heap_strf("func main(): >> %s", code);
- }
- ast_t *ast = parse_file(heap_strf("<code>%s", code), &on_err);
- ast_t *doctest = Match(Match(Match(ast, Block)->statements->ast, FunctionDef)->body, Block)->statements->ast;
- if (doctest->tag == DocTest) doctest->__data.DocTest.skip_source = 1;
- run(env, doctest);
- }
- printf("\x1b[33;1m>>\x1b[m ");
- fflush(stdout);
- }
- if (line) free(line);
- printf("\n");
-}
-
-__attribute__((noreturn, format(printf, 2, 3)))
-static void repl_err(ast_t *node, const char *fmt, ...)
-{
- bool color = isatty(STDERR_FILENO) && !getenv("NO_COLOR");
- if (color)
- fputs("\x1b[31;7;1m", stderr);
- if (node)
- fprintf(stderr, "%s:%ld.%ld: ", node->file->relative_filename, get_line_number(node->file, node->start),
- get_line_column(node->file, node->start));
- va_list args;
- va_start(args, fmt);
- vfprintf(stderr, fmt, args);
- va_end(args);
- if (color)
- fputs(" \x1b[m", stderr);
- fputs("\n\n", stderr);
- if (node)
- highlight_error(node->file, node->start, node->end, "\x1b[31;1m", 2, color);
-
- longjmp(on_err, 1);
-}
-
-const TypeInfo_t *type_to_type_info(type_t *t)
-{
- switch (t->tag) {
- case AbortType: return &Abort$info;
- case ReturnType: errx(1, "Shouldn't be getting a typeinfo for ReturnType");
- case VoidType: return &Void$info;
- case MemoryType: return &Memory$info;
- case BoolType: return &Bool$info;
- case BigIntType: return &Int$info;
- case IntType:
- switch (Match(t, IntType)->bits) {
- case TYPE_IBITS64: return &Int64$info;
- case TYPE_IBITS32: return &Int32$info;
- case TYPE_IBITS16: return &Int16$info;
- case TYPE_IBITS8: return &Int8$info;
- default: errx(1, "Invalid bits");
- }
- case NumType:
- switch (Match(t, NumType)->bits) {
- case TYPE_NBITS64: return &Num$info;
- case TYPE_NBITS32: return &Num32$info;
- default: errx(1, "Invalid bits");
- }
- case TextType: return &Text$info;
- case ArrayType: {
- const TypeInfo_t *item_info = type_to_type_info(Match(t, ArrayType)->item_type);
- TypeInfo_t array_info = *Array$info(item_info);
- return memcpy(GC_MALLOC(sizeof(TypeInfo_t)), &array_info, sizeof(TypeInfo_t));
- }
- case TableType: {
- const TypeInfo_t *key_info = type_to_type_info(Match(t, TableType)->key_type);
- const TypeInfo_t *value_info = type_to_type_info(Match(t, TableType)->value_type);
- const TypeInfo_t table_info = *Table$info(key_info, value_info);
- return memcpy(GC_MALLOC(sizeof(TypeInfo_t)), &table_info, sizeof(TypeInfo_t));
- }
- case PointerType: {
- auto ptr = Match(t, PointerType);
- CORD sigil = ptr->is_stack ? "&" : "@";
- const TypeInfo_t *pointed_info = type_to_type_info(ptr->pointed);
- const TypeInfo_t pointer_info = *Pointer$info(sigil, pointed_info);
- return memcpy(GC_MALLOC(sizeof(TypeInfo_t)), &pointer_info, sizeof(TypeInfo_t));
- }
- default: errx(1, "Unsupported type: %T", t);
- }
-}
-
-static PUREFUNC void *get_address(env_t *env, ast_t *ast)
-{
- switch (ast->tag) {
- case Var: {
- repl_binding_t *b = get_repl_binding(env, Match(ast, Var)->name);
- if (!b) repl_err(ast, "No such variable");
- return b->value;
- }
- default: errx(1, "Address not implemented for %W", ast);
- }
-}
-
-static Int_t ast_to_int(env_t *env, ast_t *ast)
-{
- type_t *t = get_type(env, ast);
- switch (t->tag) {
- case BigIntType: {
- number_t num;
- eval(env, ast, &num);
- return num.integer;
- }
- case IntType: {
- number_t num;
- eval(env, ast, &num);
- switch (Match(t, IntType)->bits) {
- case TYPE_IBITS64: return Int$from_int64((int64_t)num.i64);
- case TYPE_IBITS32: return Int$from_int32(num.i32);
- case TYPE_IBITS16: return Int$from_int16(num.i16);
- case TYPE_IBITS8: return Int$from_int8(num.i8);
- default: errx(1, "Invalid int bits");
- }
- }
- default: repl_err(NULL, "Cannot convert to integer");
- }
-}
-
-static double ast_to_num(env_t *env, ast_t *ast)
-{
- type_t *t = get_type(env, ast);
- switch (t->tag) {
- case BigIntType: case IntType: {
- number_t num;
- eval(env, ast, &num);
- if (t->tag == BigIntType)
- return Num$from_int(num.integer, false);
- switch (Match(t, IntType)->bits) {
- case TYPE_IBITS64: return Num$from_int64(num.i64, false);
- case TYPE_IBITS32: return Num$from_int32(num.i32);
- case TYPE_IBITS16: return Num$from_int16(num.i16);
- case TYPE_IBITS8: return Num$from_int8(num.i8);
- default: errx(1, "Invalid int bits");
- }
- }
- case NumType: {
- number_t num;
- eval(env, ast, &num);
- return Match(t, NumType)->bits == TYPE_NBITS32 ? (double)num.n32 : (double)num.n64;
- }
- default: repl_err(NULL, "Cannot convert to number");
- }
-}
-
-static Text_t obj_to_text(type_t *t, const void *obj, bool use_color)
-{
- const TypeInfo_t *info = type_to_type_info(t);
- return generic_as_text(obj, use_color, info);
-}
-
-void run(env_t *env, ast_t *ast)
-{
- switch (ast->tag) {
- case Declare: {
- auto decl = Match(ast, Declare);
- const char *name = Match(decl->var, Var)->name;
- type_t *type = get_type(env, decl->value);
- repl_binding_t *binding = new(repl_binding_t, .type=type, .value=GC_MALLOC(type_size(type)));
- eval(env, decl->value, binding->value);
- Table$str_set(env->locals, name, binding);
- break;
- }
- case Assign: {
- auto assign = Match(ast, Assign);
- int64_t n = 0;
- for (ast_list_t *t = assign->targets; t; t = t->next)
- ++n;
- for (ast_list_t *val = assign->values, *target = assign->targets; val && target; val = val->next, target = target->next) {
- type_t *t_target = get_type(env, target->ast);
- type_t *t_val = get_type(env, val->ast);
- if (!type_eq(t_val, t_target))
- repl_err(target->ast, "This value has type %T but I expected a %T", t_val, t_target);
-
- if (!can_be_mutated(env, target->ast)) {
- if (target->ast->tag == Index || target->ast->tag == FieldAccess) {
- ast_t *subject = target->ast->tag == Index ? Match(target->ast, Index)->indexed : Match(target->ast, FieldAccess)->fielded;
- repl_err(subject, "This is an immutable value, you can't assign to it");
- } else {
- repl_err(target->ast, "This is a value of type %T and can't be assigned to", get_type(env, target->ast));
- }
- }
- }
- for (ast_list_t *val = assign->values, *target = assign->targets; val && target; val = val->next, target = target->next) {
- switch (target->ast->tag) {
- case Var: {
- void *dest = get_address(env, target->ast);
- eval(env, val->ast, dest);
- break;
- }
- // case Index: {
- // auto index = Match(target->ast, Index);
- // type_t *obj_t = get_type(env, index->indexed);
- // TypeInfo_t *table_info = type_to_type_info(t);
- // }
- default: errx(1, "Assignment not implemented: %W", target->ast);
- }
- }
- break;
- }
- case DocTest: {
- auto doctest = Match(ast, DocTest);
- type_t *t = get_type(env, doctest->expr);
- size_t size = t ? type_size(t) : 0;
- if (size == 0) {
- run(env, doctest->expr);
- } else {
- void *value = GC_MALLOC(size);
- eval(env, doctest->expr, value);
- Text_t text = obj_to_text(t, value, true);
- printf("= %k \x1b[2m: %T\x1b[m\n", &text, t);
- fflush(stdout);
- }
- break;
- }
- case Block: {
- auto block = Match(ast, Block);
- for (ast_list_t *stmt = block->statements; stmt; stmt = stmt->next) {
- run(env, stmt->ast);
- }
- break;
- }
- // UpdateAssign,
- // FunctionDef,
- // For, While, If, When,
- // Skip, Stop, Pass,
- // Return,
- // Extern,
- // StructDef, EnumDef, LangDef,
- // DocTest,
- // Use,
- // LinkerDirective,
- // InlineCCode,
- case If: {
- auto if_ = Match(ast, If);
- bool condition;
- type_t *cond_t = get_type(env, if_->condition);
- assert(cond_t->tag == BoolType);
- eval(env, if_->condition, &condition);
- if (condition) {
- run(env, if_->body);
- } else if (if_->else_body) {
- run(env, if_->else_body);
- }
- break;
- }
- case While: {
- auto while_ = Match(ast, While);
- bool condition;
- type_t *cond_t = get_type(env, while_->condition);
- assert(cond_t->tag == BoolType);
- for (;;) {
- eval(env, while_->condition, &condition);
- if (!condition) break;
- run(env, while_->body);
- }
- break;
- }
- // case For: {
- // auto for_ = Match(ast, For);
- // }
- default: {
- eval(env, ast, NULL);
- break;
- }
- }
-}
-
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wstack-protector"
-void eval(env_t *env, ast_t *ast, void *dest)
-{
- type_t *t = get_type(env, ast);
- size_t size = type_size(t);
- switch (ast->tag) {
- case None:
- if (dest) *(void**)dest = 0;
- break;
- case Bool:
- if (dest) *(bool*)dest = Match(ast, Bool)->b;
- break;
- case Var: {
- if (!dest) return;
- repl_binding_t *b = get_repl_binding(env, Match(ast, Var)->name);
- if (!b)
- repl_err(ast, "No such variable: %s", Match(ast, Var)->name);
- memcpy(dest, b->value, size);
- break;
- }
- case Int: {
- if (!dest) return;
- *(Int_t*)dest = Int$parse(Text$from_str(Match(ast, Int)->str)); break;
- break;
- }
- case Num: {
- if (!dest) return;
- *(double*)dest = Match(ast, Num)->n; break;
- break;
- }
- case TextLiteral:
- if (dest) *(CORD*)dest = Match(ast, TextLiteral)->cord;
- break;
- case TextJoin: {
- CORD ret = CORD_EMPTY;
- for (ast_list_t *chunk = Match(ast, TextJoin)->children; chunk; chunk = chunk->next) {
- type_t *chunk_t = get_type(env, chunk->ast);
- if (chunk_t->tag == TextType) {
- CORD c;
- eval(env, chunk->ast, &c);
- ret = CORD_cat(ret, c);
- } else {
- size_t chunk_size = type_size(chunk_t);
- char buf[chunk_size];
- eval(env, chunk->ast, buf);
- ret = CORD_cat(ret, Text$as_c_string(obj_to_text(chunk_t, buf, false)));
- }
- }
- if (dest) *(CORD*)dest = ret;
- break;
- }
- case BinaryOp: {
- auto binop = Match(ast, BinaryOp);
- if (t->tag == IntType || t->tag == BigIntType) {
-#define CASE_OP(OP_NAME, method_name) case BINOP_##OP_NAME: {\
- Int_t lhs = ast_to_int(env, binop->lhs); \
- Int_t rhs = ast_to_int(env, binop->rhs); \
- Int_t result = Int$ ## method_name (lhs, rhs); \
- if (t->tag == BigIntType) {\
- *(Int_t*)dest = result; \
- return; \
- } \
- switch (Match(t, IntType)->bits) { \
- case 64: *(int64_t*)dest = Int64$from_int(result, false); return; \
- case 32: *(int32_t*)dest = Int32$from_int(result, false); return; \
- case 16: *(int16_t*)dest = Int16$from_int(result, false); return; \
- case 8: *(int8_t*)dest = Int8$from_int(result, false); return; \
- default: errx(1, "Invalid int bits"); \
- } \
- break; \
- }
- switch (binop->op) {
- CASE_OP(MULT, times) CASE_OP(DIVIDE, divided_by) CASE_OP(PLUS, plus) CASE_OP(MINUS, minus)
- CASE_OP(RSHIFT, right_shifted) CASE_OP(LSHIFT, left_shifted)
- CASE_OP(MOD, modulo) CASE_OP(MOD1, modulo1)
- CASE_OP(AND, bit_and) CASE_OP(OR, bit_or) CASE_OP(XOR, bit_xor)
- default: break;
- }
-#undef CASE_OP
- } else if (t->tag == NumType) {
-#define CASE_OP(OP_NAME, C_OP) case BINOP_##OP_NAME: {\
- double lhs = ast_to_num(env, binop->lhs); \
- double rhs = ast_to_num(env, binop->rhs); \
- if (Match(t, NumType)->bits == 64) \
- *(double*)dest = (double)(lhs C_OP rhs); \
- else \
- *(float*)dest = (float)(lhs C_OP rhs); \
- return; \
- }
- switch (binop->op) {
- CASE_OP(MULT, *) CASE_OP(DIVIDE, /) CASE_OP(PLUS, +) CASE_OP(MINUS, -)
- default: break;
- }
-#undef CASE_OP
- }
- switch (binop->op) {
- case BINOP_EQ: case BINOP_NE: case BINOP_LT: case BINOP_LE: case BINOP_GT: case BINOP_GE: {
- type_t *t_lhs = get_type(env, binop->lhs);
- if (!type_eq(t_lhs, get_type(env, binop->rhs)))
- repl_err(ast, "Comparisons between different types aren't supported");
- const TypeInfo_t *info = type_to_type_info(t_lhs);
- size_t value_size = type_size(t_lhs);
- char lhs[value_size], rhs[value_size];
- eval(env, binop->lhs, lhs);
- eval(env, binop->rhs, rhs);
- int cmp = generic_compare(lhs, rhs, info);
- switch (binop->op) {
- case BINOP_EQ: *(bool*)dest = (cmp == 0); break;
- case BINOP_NE: *(bool*)dest = (cmp != 0); break;
- case BINOP_GT: *(bool*)dest = (cmp > 0); break;
- case BINOP_GE: *(bool*)dest = (cmp >= 0); break;
- case BINOP_LT: *(bool*)dest = (cmp < 0); break;
- case BINOP_LE: *(bool*)dest = (cmp <= 0); break;
- default: break;
- }
- break;
- }
- default: errx(1, "Binary op not implemented for %T: %W", t, ast);
- }
- break;
- }
- case Index: {
- auto index = Match(ast, Index);
- type_t *indexed_t = get_type(env, index->indexed);
- // type_t *index_t = get_type(env, index->index);
- switch (indexed_t->tag) {
- case ArrayType: {
- Array_t arr;
- eval(env, index->indexed, &arr);
- int64_t raw_index = Int64$from_int(ast_to_int(env, index->index), false);
- int64_t index_int = raw_index;
- if (index_int < 1) index_int = arr.length + index_int + 1;
- if (index_int < 1 || index_int > arr.length)
- repl_err(index->index, "%ld is an invalid index for an array with length %ld",
- raw_index, arr.length);
- size_t item_size = type_size(Match(indexed_t, ArrayType)->item_type);
- memcpy(dest, arr.data + arr.stride*(index_int-1), item_size);
- break;
- }
- case TableType: {
- Table_t table;
- eval(env, index->indexed, &table);
- type_t *key_type = Match(indexed_t, TableType)->key_type;
- size_t key_size = type_size(key_type);
- char key_buf[key_size];
- eval(env, index->index, key_buf);
- const TypeInfo_t *table_info = type_to_type_info(indexed_t);
- memcpy(dest, Table$get(table, key_buf, table_info), key_size);
- break;
- }
- case PointerType: {
- auto ptr = Match(indexed_t, PointerType);
- size_t pointed_size = type_size(ptr->pointed);
- void *pointer;
- eval(env, index->indexed, &pointer);
- memcpy(dest, pointer, pointed_size);
- break;
- }
- default: errx(1, "Indexing is not supported for %T", indexed_t);
- }
- break;
- }
- case Array: {
- assert(t->tag == ArrayType);
- Array_t arr = {};
- size_t item_size = type_size(Match(t, ArrayType)->item_type);
- char item_buf[item_size];
- for (ast_list_t *item = Match(ast, Array)->items; item; item = item->next) {
- eval(env, item->ast, item_buf);
- Array$insert(&arr, item_buf, I(0), (int64_t)type_size(Match(t, ArrayType)->item_type));
- }
- memcpy(dest, &arr, sizeof(Array_t));
- break;
- }
- case Table: {
- assert(t->tag == TableType);
- auto table_ast = Match(ast, Table);
- Table_t table = {};
- size_t key_size = type_size(Match(t, TableType)->key_type);
- size_t value_size = type_size(Match(t, TableType)->value_type);
- char key_buf[key_size];
- char value_buf[value_size];
- const TypeInfo_t *table_info = type_to_type_info(t);
- assert(table_info->tag == TableInfo);
- for (ast_list_t *entry = table_ast->entries; entry; entry = entry->next) {
- auto e = Match(entry->ast, TableEntry);
- eval(env, e->key, key_buf);
- eval(env, e->value, value_buf);
- Table$set(&table, key_buf, value_buf, table_info);
- }
- if (table_ast->fallback)
- eval(env, table_ast->fallback, &table.fallback);
- memcpy(dest, &table, sizeof(Table_t));
- break;
- }
- case Block: {
- auto block = Match(ast, Block);
- for (ast_list_t *stmt = block->statements; stmt; stmt = stmt->next) {
- if (stmt->next)
- run(env, stmt->ast);
- else
- eval(env, stmt->ast, dest);
- }
- break;
- }
- default:
- errx(1, "Eval not implemented for %W", ast);
- }
-}
-#pragma GCC diagnostic pop
-
-// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0