Author: yeti <mesyeti@noreply.codeberg.org>
Merge pull request 'WipBASIC' (#1) from WipBASIC into main Reviewed-on: https://codeberg.org/non-bloat-collective/nitron/pulls/1
LICENSE | 245 ---------- basic-boot/.gitignore | 1 basic-boot/Makefile | 49 ++ basic-boot/example.bas | 10 basic-boot/source/common.h | 9 basic-boot/source/error.c | 67 +++ basic-boot/source/error.h | 14 basic-boot/source/lexer.c | 224 ++++++++++ basic-boot/source/lexer.h | 70 +++ basic-boot/source/main.c | 76 +++ basic-boot/source/mem.c | 27 + basic-boot/source/mem.h | 11 basic-boot/source/parser.c | 664 ++++++++++++++++++++++++++++++ basic-boot/source/parser.h | 127 +++++ basic-boot/source/semanticAnalysis.c | 382 +++++++++++++++++ basic-boot/source/semanticAnalysis.h | 9 basic-boot/source/state.c | 127 +++++ basic-boot/source/state.h | 80 +++ basic-boot/source/string.c | 48 ++ basic-boot/source/string.h | 18 basic-boot/source/util.c | 16 basic-boot/source/util.h | 22 basic-boot/test.bas | 20 kernel/Makefile | 67 +++ kernel/source/common.h | 7 kernel/source/vm.h | 8
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If not, see <https://www.gnu.org/licenses/>. - -Also add information on how to contact you by electronic and paper mail. - -If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode: - - nitron Copyright (C) 2026 non-bloat-collective - This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”. - -You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>. - -The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/basic-boot/.gitignore b/basic-boot/.gitignore new file mode 100644 index 0000000000000000000000000000000000000000..631d23f7093ec4d51a6bf2ededb3b33c0630dd30 --- /dev/null +++ b/basic-boot/.gitignore @@ -0,0 +1 @@ +nitronb diff --git a/basic-boot/Makefile b/basic-boot/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..785906776db0027224492a1270d26eb186a99c75 --- /dev/null +++ b/basic-boot/Makefile @@ -0,0 +1,49 @@ +SOURCES := $(wildcard source/*.c) $(wildcard source/**/*.c) +OBJECTS := $(patsubst source/%.c,bin/%.o,$(SOURCES)) +OUT := nitronb +LD := $(CC) + +override CFLAGS += -std=c99 -Wall -Wextra -Wuninitialized -Wundef -pedantic +override LDLIBS += -lm + +ifeq ($(BUILD),release) + override CFLAGS += -O3 + #override CPPFLAGS += -NDEBUG +else + override CFLAGS += -Og -g + ifeq ($(ASAN), y) + override CFLAGS += -fno-omit-frame-pointer -fsanitize=address + override LDFLAGS += -fsanitize=address + endif +endif + +.SECONDEXPANSION: + +deps.filter := %.c %.h +deps.option := -MM +define deps +$$(filter $$(deps.filter),,$$(shell $(CC) $(CFLAGS) $(CPPFLAGS) -E $(deps.option) $(1))) +endef + +all: $(OUT) + @: + +run: $(OUT) + '$(dir $<)$(notdir $<)' $(RUNFLAGS) + +$(OUT): $(OBJECTS) + $(LD) $(LDFLAGS) $^ $(LDLIBS) -o $@ + +bin/: + mkdir -p bin + +bin/%.o: source/%.c $(call deps,source/%.c) | bin/ + $(CC) $(CFLAGS) $(CPPFLAGS) $< -c -o $@ + +clean: + rm -r bin + +distclean: clean + rm $(OUT) + +.PHONY: all run clean distclean diff --git a/basic-boot/example.bas b/basic-boot/example.bas new file mode 100644 index 0000000000000000000000000000000000000000..2267bac07513ff4c398f934c27ab667969854ed0 --- /dev/null +++ b/basic-boot/example.bas @@ -0,0 +1,10 @@ +'NITRON + +extern C func puts(ptr(char)) int + +puts "Hello, world!" + +dim ret as int +ret = puts("Hello again, world!") + +quit ret diff --git a/basic-boot/source/common.h b/basic-boot/source/common.h new file mode 100644 index 0000000000000000000000000000000000000000..94f4fb2029fd67dc73686715ded950e26256c9a6 --- /dev/null +++ b/basic-boot/source/common.h @@ -0,0 +1,9 @@ +#ifndef N_COMMON_H +#define N_COMMON_H + +#include <stddef.h> +#include <stdint.h> +#include <stdlib.h> +#include <stdbool.h> + +#endif diff --git a/basic-boot/source/error.c b/basic-boot/source/error.c new file mode 100644 index 0000000000000000000000000000000000000000..2149922c18c01d2bd86757208d040c3983d37e91 --- /dev/null +++ b/basic-boot/source/error.c @@ -0,0 +1,67 @@ +#include <stdio.h> +#include <stdarg.h> +#include <assert.h> +#include "mem.h" +#include "error.h" + +#define FMT(RET, FORMAT) do { \ + int n = 0; \ + size_t size = 0; \ + va_list ap; \ +\ + va_start(ap, FORMAT); \ + n = vsnprintf(RET, size, FORMAT, ap); \ + va_end(ap); \ +\ + assert(n >= 0); \ +\ + size = n + 1; \ + RET = (char*) SafeMalloc(size); \ + if (RET == NULL) { \ + return; \ + } \ +\ + va_start(ap, FORMAT); \ + n = vsnprintf(RET, size, FORMAT, ap); \ + va_end(ap); \ +\ + assert(n >= 0); \ +} while (0); + +void PrintError(ErrorInfo err, const char* format, ...) { + char* ret = NULL; + + FMT(ret, format); + + #if 0 + fprintf(stderr, "error: %s:%d: %s\n", err.file, (int) err.line, ret); + #else + #define RED "\x1b[31m" + #define BLUE "\x1b[34m" + #define RESET "\x1b[0m" + fprintf( + stderr, RED "error: " BLUE "%s:%d: " RESET "%s\n", + err.file, (int) err.line, ret + ); + #endif + + exit(1); +} + +void PrintWarning(ErrorInfo err, const char* format, ...) { + char* ret = NULL; + + FMT(ret, format); + + #if 0 + fprintf(stderr, "error: %s:%d: %s\n", err.file, (int) err.line, ret); + #else + #define YELLOW "\x1b[33m" + #define BLUE "\x1b[34m" + #define RESET "\x1b[0m" + fprintf( + stderr, YELLOW "warning: " BLUE "%s:%d: " RESET "%s\n", + err.file, (int) err.line, ret + ); + #endif +} diff --git a/basic-boot/source/error.h b/basic-boot/source/error.h new file mode 100644 index 0000000000000000000000000000000000000000..de5ff9f8e56c78843c3d6aefae933fcc325e3de4 --- /dev/null +++ b/basic-boot/source/error.h @@ -0,0 +1,14 @@ +#ifndef N_ERROR_H +#define N_ERROR_H + +#include "common.h" + +typedef struct { + const char* file; + size_t line; +} ErrorInfo; + +void PrintError(ErrorInfo err, const char* format, ...); +void PrintWarning(ErrorInfo err, const char* format, ...); + +#endif diff --git a/basic-boot/source/lexer.c b/basic-boot/source/lexer.c new file mode 100644 index 0000000000000000000000000000000000000000..06ae344d28b518f6745713a23d6a05af98a2075c --- /dev/null +++ b/basic-boot/source/lexer.c @@ -0,0 +1,224 @@ +#include <stdio.h> +#include <assert.h> +#include <string.h> +#include "lexer.h" +#include "string.h" + +Lexer Lexer_Init(FILE* file, const char* fileName) { + Lexer lexer; + lexer.file = file; + lexer.success = true; + lexer.fileName = fileName; + lexer.line = 1; + return lexer; +} + +void Lexer_Free(Lexer* lexer) { + fclose(lexer->file); +} + +static bool IsSeparator(char ch) { + switch (ch) { + case ' ': + case '\n': + case '\t': + case '(': + case ')': + case ',': + case '+': + case '-': + case '*': + case '/': + case '%': + case '=': + case '<': + case '>': + case '\'': return true; + default: return false; + } +} + +static bool IsNumeric(const char* str) { + size_t len = strlen(str); + + for (size_t i = 0; i < len; ++ i) { + if ((str[i] < '0') || (str[i] > '9')) return false; + } + + return true; +} + +#define GET_CHAR(VAR) \ + do { \ + if (fread(&VAR, 1, 1, lexer->file) != 1) { \ + return LEXER_EOF; \ + } \ + if (VAR == '\n') ++ lexer->line; \ + } while (0); + +#define GET_CHAR_ERROR(VAR) \ + do { \ + if (fread(&VAR, 1, 1, lexer->file) != 1) { \ + ErrorInfo err = {lexer->fileName, lexer->line}; \ + PrintError(err, "Unexpected EOF"); \ + lexer->success = false; \ + return LEXER_EOF; \ + } \ + if (VAR == '\n') ++ lexer->line; \ + } while (0); + +#define TOKEN(TYPE, CONTENTS) ((Token) \ + {(TYPE), (ErrorInfo) {lexer->fileName, lexer->line}, (CONTENTS)}) + +int Lexer_Next(Lexer* lexer, Token* token) { + char ch; + + GET_CHAR(ch) + + switch (ch) { + case '"': { + String string = String_New(); + + while (true) { + GET_CHAR_ERROR(ch) + if (ch == '"') break; + + String_AddChar(&string, ch); + } + + *token = TOKEN(TOKEN_STRING, string.contents); + return LEXER_TOKEN; + } + case '(': *token = TOKEN(TOKEN_LPAREN, NULL); return LEXER_TOKEN; + case ')': *token = TOKEN(TOKEN_RPAREN, NULL); return LEXER_TOKEN; + case ',': *token = TOKEN(TOKEN_COMMA, NULL); return LEXER_TOKEN; + case '+': *token = TOKEN(TOKEN_ADD, NULL); return LEXER_TOKEN; + case '-': *token = TOKEN(TOKEN_SUBTRACT, NULL); return LEXER_TOKEN; + case '*': *token = TOKEN(TOKEN_MULTIPLY, NULL); return LEXER_TOKEN; + case '/': *token = TOKEN(TOKEN_DIVIDE, NULL); return LEXER_TOKEN; + case '%': *token = TOKEN(TOKEN_MOD, NULL); return LEXER_TOKEN; + case '=': *token = TOKEN(TOKEN_EQUAL, NULL); return LEXER_TOKEN; + case '<': *token = TOKEN(TOKEN_LESS, NULL); return LEXER_TOKEN; + case '>': *token = TOKEN(TOKEN_GREATER, NULL); return LEXER_TOKEN; + case '\n': *token = TOKEN(TOKEN_LINE, NULL); return LEXER_TOKEN; + case '\'': { + while (true) { + GET_CHAR(ch); + + if (ch == '\n') { + return LEXER_NONE; + } + } + return LEXER_EOF; + } + case ' ': + case '\t': return LEXER_NONE; + default: { + // must be an identifier, keyword, or integer + String string = String_FromChar(ch); + + while (true) { + GET_CHAR_ERROR(ch) + if (IsSeparator(ch)) { + fseek(lexer->file, -1, SEEK_CUR); + if (ch == '\n') -- lexer->line; + break; + } + + String_AddChar(&string, ch); + } + + if (IsNumeric(string.contents)) { + *token = TOKEN(TOKEN_INT, string.contents); + return LEXER_TOKEN; + } + if (!strcmp(string.contents, "extern")) { + *token = TOKEN(TOKEN_EXTERN, NULL); + String_Free(&string); + return LEXER_TOKEN; + } + if (!strcmp(string.contents, "func") || !strcmp(string.contents, "function")) { + *token = TOKEN(TOKEN_FUNC, NULL); + String_Free(&string); + return LEXER_TOKEN; + } + if (!strcmp(string.contents, "sub")) { + *token = TOKEN(TOKEN_SUB, NULL); + String_Free(&string); + return LEXER_TOKEN; + } + if (!strcmp(string.contents, "dim")) { + *token = TOKEN(TOKEN_DIM, NULL); + String_Free(&string); + return LEXER_TOKEN; + } + if (!strcmp(string.contents, "as")) { + *token = TOKEN(TOKEN_AS, NULL); + String_Free(&string); + return LEXER_TOKEN; + } + if (!strcmp(string.contents, "quit")) { + *token = TOKEN(TOKEN_QUIT, NULL); + String_Free(&string); + return LEXER_TOKEN; + } + if (!strcmp(string.contents, "ptr")) { + *token = TOKEN(TOKEN_PTR, NULL); + String_Free(&string); + return LEXER_TOKEN; + } + if (!strcmp(string.contents, "end")) { + *token = TOKEN(TOKEN_END, NULL); + String_Free(&string); + return LEXER_TOKEN; + } + + *token = TOKEN(TOKEN_IDENTIFIER, string.contents); + return LEXER_TOKEN; + } + } +} + +const char* Lexer_TypeVAsString(TokenType type) { + switch (type) { + case TOKEN_NULL: return "null"; + case TOKEN_EXTERN: return "extern"; + case TOKEN_FUNC: return "func"; + case TOKEN_SUB: return "sub"; + case TOKEN_DIM: return "dim"; + case TOKEN_AS: return "as"; + case TOKEN_QUIT: return "quit"; + case TOKEN_PTR: return "ptr"; + case TOKEN_END: return "end"; + case TOKEN_IDENTIFIER: return "identifier"; + case TOKEN_STRING: return "string"; + case TOKEN_INT: return "int"; + case TOKEN_LINE: return "line"; + case TOKEN_LPAREN: return "lparen"; + case TOKEN_RPAREN: return "rparen"; + case TOKEN_COMMA: return "comma"; + case TOKEN_ADD: return "add"; + case TOKEN_SUBTRACT: return "subtract"; + case TOKEN_MULTIPLY: return "multiply"; + case TOKEN_DIVIDE: return "divide"; + case TOKEN_MOD: return "mod"; + case TOKEN_EQUAL: return "equal"; + case TOKEN_LESS: return "less"; + case TOKEN_GREATER: return "greater"; + default: assert(0); + } +} + +const char* Lexer_TypeAsString(Token* token) { + return Lexer_TypeVAsString(token->type); +} + +void Lexer_PrintToken(Token* token) { + printf("%s: %s\n", Lexer_TypeAsString(token), token->contents); +} + +void Lexer_FreeToken(Token* token) { + if (token->contents) { + free(token->contents); + } +} diff --git a/basic-boot/source/lexer.h b/basic-boot/source/lexer.h new file mode 100644 index 0000000000000000000000000000000000000000..0f3e15fa515f4e38f3882d1480fa461bb3e6a706 --- /dev/null +++ b/basic-boot/source/lexer.h @@ -0,0 +1,70 @@ +#ifndef N_LEXER_H +#define N_LEXER_H + +#include <stdio.h> +#include "error.h" +#include "common.h" + +typedef enum { + TOKEN_NULL = 0, + + // keywords + TOKEN_EXTERN, + TOKEN_FUNC, + TOKEN_SUB, + TOKEN_DIM, + TOKEN_AS, + TOKEN_QUIT, + TOKEN_PTR, + TOKEN_END, + + // misc + TOKEN_IDENTIFIER, + TOKEN_STRING, + TOKEN_INT, + TOKEN_LINE, + + // characters + TOKEN_LPAREN, + TOKEN_RPAREN, + TOKEN_COMMA, + + // operators + TOKEN_ADD, + TOKEN_SUBTRACT, + TOKEN_MULTIPLY, + TOKEN_DIVIDE, + TOKEN_MOD, + TOKEN_EQUAL, + TOKEN_LESS, + TOKEN_GREATER +} TokenType; + +enum { + LEXER_TOKEN, + LEXER_EOF, + LEXER_NONE +}; + +typedef struct { + TokenType type; + ErrorInfo err; + char* contents; +} Token; + +typedef struct { + FILE* file; + bool success; + const char* fileName; + size_t line; +} Lexer; + +Lexer Lexer_Init(FILE* file, const char* fileName); +void Lexer_Free(Lexer* lexer); +int Lexer_Next(Lexer* lexer, Token* token); +const char* Lexer_TypeVAsString(TokenType type); +const char* Lexer_TypeAsString(Token* token); +void Lexer_PrintToken(Token* token); +void Lexer_FreeToken(Token* token); + +#endif diff --git a/basic-boot/source/main.c b/basic-boot/source/main.c new file mode 100644 index 0000000000000000000000000000000000000000..a8e3fa95d0afaa3a9ac44b0c75f86f336a150b30 --- /dev/null +++ b/basic-boot/source/main.c @@ -0,0 +1,76 @@ +#include <stdio.h> +#include <string.h> +#include "lexer.h" +#include "state.h" +#include "parser.h" +#include "common.h" +#include "semanticAnalysis.h" + +int main(int argc, char** argv) { + const char* source = NULL; + + bool printNodes = false; + bool printTokens = false; + + if (argc == 1) { + printf( + "Usage: %s SOURCE [FLAGS]\n", argv[0] + ); + } + + for (int i = 1; i < argc; ++ i) { + if (argv[i][0] != '-') { + if (source) { + fprintf(stderr, "Source file set multiple times"); + return 1; + } + + source = argv[i]; + } + else if (strcmp(argv[i], "--dp") == 0) { + printNodes = true; + } + else if (strcmp(argv[i], "--dl") == 0) { + printTokens = true; + } + else { + fprintf(stderr, "Unknown flag: %s\n", argv[i]); + return 1; + } + } + + if (!source) { + fprintf(stderr, "No source file provided\n"); + return 1; + } + + FILE* sourceFile = fopen(source, "r"); + + if (!sourceFile) { + fprintf(stderr, "Failed to open '%s'\n", source); + return 1; + } + + Parser parser = Parser_Init(sourceFile, source, printTokens); + + size_t len; + Node* ret = Parser_Parse(&parser, &len); + + if (printNodes) { + for (size_t i = 0; i < len; ++ i) { + Parser_PrintNode(&ret[i]); + } + + return 0; + } + + SemanticAnalysis_Init(8); + + for (size_t i = 0; i < len; ++ i){ + SemanticAnalysis_Analyse(&ret[i]); + } + + State_DumpInfo(); + + return 0; +} diff --git a/basic-boot/source/mem.c b/basic-boot/source/mem.c new file mode 100644 index 0000000000000000000000000000000000000000..bcef6460e47b9108ddcc2f316a9836fd77855b03 --- /dev/null +++ b/basic-boot/source/mem.c @@ -0,0 +1,27 @@ +#include <stdio.h> +#include "mem.h" +#include "common.h" + +void* SafeMalloc(size_t size) { + if (size == 0) return NULL; + + void* ret = malloc(size); + + if (ret == NULL) { + fprintf(stderr, "Malloc returned NULL\n"); + exit(1); + } + + return ret; +} + +void* SafeRealloc(void* ptr, size_t size) { + void* ret = realloc(ptr, size); + + if ((ret == NULL) && (size > 0)) { + fprintf(stderr, "Malloc returned NULL\n"); + exit(1); + } + + return ret; +} diff --git a/basic-boot/source/mem.h b/basic-boot/source/mem.h new file mode 100644 index 0000000000000000000000000000000000000000..1254b31036c2ac43f2f96bc0063f85ab6766d742 --- /dev/null +++ b/basic-boot/source/mem.h @@ -0,0 +1,11 @@ +#ifndef N_MEM_H +#define N_MEM_H + +#include "common.h" + +#define NEW(T) (T*) SafeMalloc(sizeof(T)) + +void* SafeMalloc(size_t size); +void* SafeRealloc(void* ptr, size_t size); + +#endif diff --git a/basic-boot/source/parser.c b/basic-boot/source/parser.c new file mode 100644 index 0000000000000000000000000000000000000000..2ae234724509cccb38c4a2cc5db7aacef610e5c1 --- /dev/null +++ b/basic-boot/source/parser.c @@ -0,0 +1,664 @@ +#include <stdio.h> +#include <assert.h> +#include <string.h> +#include "mem.h" +#include "util.h" +#include "parser.h" + +Parser Parser_Init(FILE* file, const char* fileName, bool printTokens) { + Parser ret; + Lexer lexer = Lexer_Init(file, fileName); + + Token* tokens = SafeMalloc(64 * sizeof(Token)); + size_t tokensLen = 0; + size_t tokensCap = 64; + + bool lexing = true; + while (lexing) { + Token token; + + int status = Lexer_Next(&lexer, &token); + + switch (status) { + case LEXER_TOKEN: { + tokens[tokensLen] = token; + ++ tokensLen; + + if (tokensLen >= tokensCap) { + tokensCap += 64; + tokens = SafeRealloc(tokens, tokensCap * sizeof(Token)); + } + break; + } + case LEXER_EOF: lexing = false; break; + case LEXER_NONE: continue; + } + } + + tokens = SafeRealloc(tokens, tokensLen * sizeof(Token)); + ret.tokens = tokens; + ret.tokenNum = tokensLen; + ret.i = 0; + + if (printTokens) { + for (size_t i = 0; i < tokensLen; ++ i) { + Lexer_PrintToken(&tokens[i]); + } + + exit(0); + } + + return ret; +} + +#define INFO(TYPE) ((NodeInfo) {TYPE, p->tokens[p->i].err}) + +static Node ParseBinary(Parser* p); +static Node ParseNode(Parser* p); + +static void Advance(Parser* p) { + ++ p->i; + + if (p->i >= p->tokenNum) { + PrintError(p->tokens[p->tokenNum - 1].err, "Unexpected EOF"); + } +} + +static void Expect(Parser* p, TokenType type) { + if (p->tokens[p->i].type != type) { + Token token2; + token2.type = type; + + PrintError( + p->tokens[p->i].err, "Expected %s, got %s", + Lexer_TypeAsString(&token2), Lexer_TypeAsString(&p->tokens[p->i]) + ); + } +} + +static Node ParseAtom(Parser* p) { + Token* token = &p->tokens[p->i]; + Node ret; + + Advance(p); + + switch (token->type) { + case TOKEN_IDENTIFIER: { + ret.ident = (IdentifierNode) {INFO(NODE_IDENTIFIER), NewString(token->contents)}; + return ret; + } + case TOKEN_STRING: { + ret.string = (StringNode) {INFO(NODE_STRING), NewString(token->contents)}; + return ret; + } + case TOKEN_INT: { + ret.integer = (IntNode) {INFO(NODE_INT), atoi(token->contents)}; + return ret; + } + case TOKEN_LPAREN: { + ret = ParseBinary(p); + Expect(p, TOKEN_RPAREN); + Advance(p); + return ret; + } + default: { + PrintError( + token->err, "Failed to parse atom, got %s", + Lexer_TypeAsString(token) + ); + exit(1); + } + } +} + +static bool IsUnaryOperator(Token* tok) { + switch (tok->type) { + case TOKEN_ADD: + case TOKEN_SUBTRACT: return true; + default: return false; + } +} + +static Node ParseUnary(Parser* p) { + Token* tok = &p->tokens[p->i]; + + if (IsUnaryOperator(tok)) { + Advance(p); + Node operand = ParseUnary(p); + Node* operandPtr = SafeMalloc(sizeof(Node)); + *operandPtr = operand; + + Node ret; + ret.unary = (UnaryNode) { + INFO(NODE_UNARY_OP), operandPtr, tok->type + }; + return ret; + } + else { + return ParseAtom(p); + } +} + +static Node ParseMulDivMod(Parser* p) { + Node left = ParseUnary(p); + + while ( + (p->tokens[p->i].type == TOKEN_MULTIPLY) || + (p->tokens[p->i].type == TOKEN_DIVIDE) || + (p->tokens[p->i].type == TOKEN_MOD) + ) { + TokenType op = p->tokens[p->i].type; + Advance(p); + Node right = ParseUnary(p); + + Node* leftPtr = SafeMalloc(sizeof(Node)); + Node* rightPtr = SafeMalloc(sizeof(Node)); + *leftPtr = left; + *rightPtr = right; + + left.bin = (BinaryNode) { + INFO(NODE_BINARY_OP), leftPtr, rightPtr, op + }; + } + + return left; +} + +static Node ParseAddSub(Parser* p) { + Node left = ParseMulDivMod(p); + + while ( + (p->tokens[p->i].type == TOKEN_ADD) || + (p->tokens[p->i].type == TOKEN_SUB) + ) { + TokenType op = p->tokens[p->i].type; + Advance(p); + Node right = ParseMulDivMod(p); + + Node* leftPtr = SafeMalloc(sizeof(Node)); + Node* rightPtr = SafeMalloc(sizeof(Node)); + *leftPtr = left; + *rightPtr = right; + + left.bin = (BinaryNode) { + INFO(NODE_BINARY_OP), leftPtr, rightPtr, op + }; + } + + return left; +} + +static Node ParseComparison(Parser* p) { + Node left = ParseAddSub(p); + + while ( + (p->tokens[p->i].type == TOKEN_EQUAL) || + (p->tokens[p->i].type == TOKEN_LESS) || + (p->tokens[p->i].type == TOKEN_GREATER) + ) { + TokenType op = p->tokens[p->i].type; + Advance(p); + Node right = ParseAddSub(p); + + Node* leftPtr = SafeMalloc(sizeof(Node)); + Node* rightPtr = SafeMalloc(sizeof(Node)); + *leftPtr = left; + *rightPtr = right; + + left.bin = (BinaryNode) { + INFO(NODE_BINARY_OP), leftPtr, rightPtr, op + }; + } + + return left; +} + +static Node ParseBinary(Parser* p) { + return ParseComparison(p); +} + +static Node ParseType(Parser* p) { + Node ret; + + switch (p->tokens[p->i].type) { + case TOKEN_PTR: { + Advance(p); + Expect(p, TOKEN_LPAREN); + Advance(p); + + Node innerType = ParseType(p); + ret.ptr = (PtrNode) {INFO(NODE_PTR), SafeMalloc(sizeof(Node))}; + *ret.ptr.inner = innerType; + + Advance(p); + Expect(p, TOKEN_RPAREN); + return ret; + } + case TOKEN_IDENTIFIER: { + ret.ident = (IdentifierNode) { + INFO(NODE_IDENTIFIER), NewString(p->tokens[p->i].contents) + }; + return ret; + } + default: { + PrintError( + p->tokens[p->i].err, "Unexpected %s token in type", + Lexer_TypeAsString(&p->tokens[p->i]) + ); + exit(1); + } + } +} + +static FuncDec ParseFuncDec(Parser* p) { + FuncDecParam* params = NULL; + size_t paramsNum = 0; + + bool sub = p->tokens[p->i].type == TOKEN_SUB; + + Advance(p); + FuncDec ret; + + Expect(p, TOKEN_IDENTIFIER); + ret.name = NewString(p->tokens[p->i].contents); + + Advance(p); + Expect(p, TOKEN_LPAREN); + Advance(p); + + while (p->tokens[p->i].type != TOKEN_RPAREN) { + FuncDecParam param; + Expect(p, TOKEN_IDENTIFIER); + param.name = NewString(p->tokens[p->i].contents); + + Advance(p); + Expect(p, TOKEN_AS); + + Advance(p); + Node typeNode = ParseType(p); + Node* typePtr = SafeMalloc(sizeof(Node)); + *typePtr = typeNode; + param.type = typePtr; + + ++ paramsNum; + params = SafeRealloc(params, paramsNum * sizeof(FuncDecParam)); + params[paramsNum - 1] = param; + + Advance(p); + if ( + (p->tokens[p->i].type != TOKEN_COMMA) && + (p->tokens[p->i].type != TOKEN_RPAREN) + ) { + PrintError( + p->tokens[p->i].err, "Unexpected %s token in parameter list", + Lexer_TypeAsString(&p->tokens[p->i]) + ); + } + + if (p->tokens[p->i].type == TOKEN_COMMA) { + Advance(p); + } + } + + ret.params = params; + ret.paramsNum = paramsNum; + + Advance(p); + if (sub) { + Expect(p, TOKEN_LINE); + } + else { + ret.ret = SafeMalloc(sizeof(Node)); + *ret.ret = ParseType(p); + Advance(p); + Expect(p, TOKEN_LINE); + } + + return ret; +} + +static Node ParseFuncDef(Parser* p) { + FuncDefNode ret; + ret.i = INFO(NODE_FUNC_DEF); + ret.dec = ParseFuncDec(p); + Advance(p); + + ret.body = NULL; + ret.bodyLen = 0; + + while (p->tokens[p->i].type != TOKEN_END) { + if (p->tokens[p->i].type == TOKEN_LINE) { + Advance(p); + continue; + } + + Node node = ParseNode(p); + + ++ ret.bodyLen; + ret.body = SafeRealloc(ret.body, ret.bodyLen * sizeof(Node)); + ret.body[ret.bodyLen - 1] = node; + } + + Advance(p); + Expect(p, TOKEN_LINE); + + Node node; + node.funcDef = ret; + return node; +} + +static Node ParseDim(Parser* p) { + DimNode ret; + ret.i = INFO(NODE_DIM); + + Advance(p); + Expect(p, TOKEN_IDENTIFIER); + ret.name = NewString(p->tokens[p->i].contents); + + Advance(p); + Expect(p, TOKEN_AS); + + Advance(p); + ret.varType = SafeMalloc(sizeof(Node)); + *ret.varType = ParseType(p); + + + Advance(p); + Expect(p, TOKEN_LINE); + + Node node; + node.dim = ret; + return node; +} + +static Node ParseFuncCall(Parser* p) { + FuncCallNode ret; + ret.i = INFO(NODE_FUNC_CALL); + ret.func = NewString(p->tokens[p->i].contents); + + Advance(p); + Node* params = NULL; + size_t paramsNum = 0; + + while (p->tokens[p->i].type != TOKEN_LINE) { + Node param = ParseBinary(p); + + ++ paramsNum; + params = SafeRealloc(params, paramsNum * sizeof(Node)); + params[paramsNum - 1] = param; + + if ( + (p->tokens[p->i].type != TOKEN_LINE) && + (p->tokens[p->i].type != TOKEN_COMMA) + ) { + PrintError( + p->tokens[p->i].err, "Unexpected %s token in parameter list", + Lexer_TypeAsString(&p->tokens[p->i]) + ); + } + if (p->tokens[p->i].type == TOKEN_COMMA) { + Advance(p); + } + } + + ret.params = params; + ret.paramsNum = paramsNum; + + Node node; + node.funcCall = ret; + return node; +} + +static Node ParseAssign(Parser* p) { + AssignNode ret; + ret.i = INFO(NODE_ASSIGN); + ret.variable = NewString(p->tokens[p->i].contents); + + Advance(p); + Expect(p, TOKEN_EQUAL); + Advance(p); + + ret.rValue = SafeMalloc(sizeof(Node)); + *ret.rValue = ParseBinary(p); + + Expect(p, TOKEN_LINE); + + Node node; + node.assign = ret; + return node; +} + +static Node ParseNode(Parser* p) { + switch (p->tokens[p->i].type) { + case TOKEN_FUNC: + case TOKEN_SUB: return ParseFuncDef(p); + case TOKEN_DIM: return ParseDim(p); + case TOKEN_IDENTIFIER: { + if (p->i == p->tokenNum - 1) { + PrintError(p->tokens[p->i].err, "Unexpected EOF"); + } + + if (p->tokens[p->i + 1].type == TOKEN_EQUAL) { + return ParseAssign(p); + } + + return ParseFuncCall(p); + } + default: { + PrintError( + p->tokens[p->i].err, "Unexpected %s token", + Lexer_TypeAsString(&p->tokens[p->i]) + ); + exit(1); + } + } +} + +void Parser_PrintNode(Node* node) { + switch (node->i.type) { + case NODE_INT: printf("%d", node->integer.value); break; + case NODE_STRING: printf("%s", node->string.value); break; + case NODE_IDENTIFIER: printf("%s", node->ident.name); break; + case NODE_BINARY_OP: { + printf("("); + Parser_PrintNode(node->bin.left); + + switch (node->bin.op) { + case TOKEN_ADD: printf("+"); break; + case TOKEN_SUBTRACT: printf("-"); break; + case TOKEN_MULTIPLY: printf("*"); break; + case TOKEN_DIVIDE: printf("/"); break; + case TOKEN_MOD: printf("%%"); break; + case TOKEN_EQUAL: printf("="); break; + case TOKEN_LESS: printf("<"); break; + case TOKEN_GREATER: printf(">"); break; + default: assert(0); + } + + Parser_PrintNode(node->bin.right); + printf(")"); + break; + } + case NODE_UNARY_OP: { + printf("("); + + switch (node->unary.op) { + case TOKEN_ADD: printf("+"); break; + case TOKEN_SUBTRACT: printf("-"); break; + default: assert(0); + } + + Parser_PrintNode(node->unary.operand); + printf(")"); + break; + } + case NODE_PTR: { + printf("ptr("); + Parser_PrintNode(node->ptr.inner); + break; + } + case NODE_FUNC_DEF: { + if (node->funcDef.dec.ret) { + printf("func "); + } + else { + printf("sub "); + } + + printf("%s(", node->funcDef.dec.name); + + for (size_t i = 0; i < node->funcDef.dec.paramsNum; ++ i) { + printf("%s as ", node->funcDef.dec.params[i].name); + Parser_PrintNode(node->funcDef.dec.params[i].type); + + if (i < node->funcDef.dec.paramsNum - 1) { + printf(", "); + } + } + + printf(")\n"); + + for (size_t i = 0; i < node->funcDef.bodyLen; ++ i) { + printf("\t"); + Parser_PrintNode(&node->funcDef.body[i]); + puts(""); + } + puts("end"); + break; + } + case NODE_DIM: { + printf("dim %s as ", node->dim.name); + Parser_PrintNode(node->dim.varType); + puts(""); + break; + } + case NODE_FUNC_CALL: { + printf("%s ", node->funcCall.func); + + for (size_t i = 0; i < node->funcCall.paramsNum; ++ i) { + Parser_PrintNode(&node->funcCall.params[i]); + + if (i < node->funcCall.paramsNum - 1) { + printf(", "); + } + } + puts(""); + break; + } + case NODE_ASSIGN: { + printf("%s = ", node->assign.variable); + Parser_PrintNode(node->assign.rValue); + puts(""); + break; + } + default: { + printf("unknown %d\n", node->i.type); + assert(0); + } + } +} + +Node* Parser_Parse(Parser* p, size_t* lenOut) { + Node* ret = NULL; + size_t len = 0; + + for (p->i = 0; p->i < p->tokenNum; ++ p->i) { + if (p->tokens[p->i].type == TOKEN_LINE) continue; + + Node node = ParseNode(p); + + ++ len; + ret = SafeRealloc(ret, len * sizeof(Node)); + ret[len - 1] = node; + } + + for (size_t i = 0; i < p->tokenNum; ++ i) { + Lexer_FreeToken(&p->tokens[i]); + } + free(p->tokens); + + *lenOut = len; + return ret; +} + +void Parser_FreeNode(Node* node) { + switch (node->i.type) { + case NODE_STRING: free(node->string.value); break; + case NODE_IDENTIFIER: free(node->ident.name); break; + case NODE_BINARY_OP: { + Parser_FreeNode(node->bin.left); + Parser_FreeNode(node->bin.right); + free(node->bin.left); + free(node->bin.right); + break; + } + case NODE_UNARY_OP: { + Parser_FreeNode(node->unary.operand); + free(node->unary.operand); + break; + } + case NODE_PTR: { + Parser_FreeNode(node->ptr.inner); + free(node->ptr.inner); + break; + } + case NODE_FUNC_DEF: { + if (node->funcDef.dec.ret) { + Parser_FreeNode(node->funcDef.dec.ret); + free(node->funcDef.dec.ret); + } + + for (size_t i = 0; i < node->funcDef.dec.paramsNum; ++ i) { + Parser_FreeNode(node->funcDef.dec.params[i].type); + free(node->funcDef.dec.params[i].type); + } + + free(node->funcDef.dec.name); + + for (size_t i = 0; i < node->funcDef.bodyLen; ++ i) { + Parser_FreeNode(&node->funcDef.body[i]); + } + free(node->funcDef.body); + break; + } + case NODE_DIM: { + free(node->dim.name); + Parser_FreeNode(node->dim.varType); + free(node->dim.varType); + break; + } + case NODE_FUNC_CALL: { + free(node->funcCall.func); + + for (size_t i = 0; i < node->funcCall.paramsNum; ++ i) { + Parser_FreeNode(&node->funcCall.params[i]); + } + free(node->funcCall.params); + break; + } + case NODE_ASSIGN: { + free(node->assign.variable); + Parser_FreeNode(node->assign.rValue); + free(node->assign.rValue); + break; + } + default: return; + } +} + +const char* Parser_TypeStr(NodeType type) { + switch (type) { + case NODE_NONE: return "none"; + case NODE_INT: return "int"; + case NODE_STRING: return "string"; + case NODE_IDENTIFIER: return "identifier"; + case NODE_BINARY_OP: return "binary operation"; + case NODE_UNARY_OP: return "unary operation"; + case NODE_PTR: return "ptr"; + case NODE_FUNC_DEF: return "function definition"; + case NODE_DIM: return "dim"; + case NODE_FUNC_CALL: return "function call"; + case NODE_ASSIGN: return "assignment"; + default: return "???"; + } +} diff --git a/basic-boot/source/parser.h b/basic-boot/source/parser.h new file mode 100644 index 0000000000000000000000000000000000000000..9e643df70c4de70613cbcd791b17f86efca21126 --- /dev/null +++ b/basic-boot/source/parser.h @@ -0,0 +1,127 @@ +#ifndef N_PARSER_H +#define N_PARSER_H + +#include "lexer.h" +#include "error.h" +#include "common.h" + +typedef enum { + NODE_NONE, + NODE_INT, + NODE_STRING, + NODE_IDENTIFIER, + NODE_BINARY_OP, + NODE_UNARY_OP, + NODE_PTR, + NODE_FUNC_DEF, + NODE_DIM, + NODE_FUNC_CALL, + NODE_ASSIGN +} NodeType; + +typedef struct { + NodeType type; + ErrorInfo err; +} NodeInfo; + +typedef union Node Node; + +typedef struct { + NodeInfo i; + int value; +} IntNode; + +typedef struct { + NodeInfo i; + char* value; +} StringNode; + +typedef struct { + NodeInfo i; + char* name; +} IdentifierNode; + +typedef struct { + NodeInfo i; + Node* left; + Node* right; + TokenType op; +} BinaryNode; + +typedef struct { + NodeInfo i; + Node* operand; + TokenType op; +} UnaryNode; + +typedef struct { + NodeInfo i; + Node* inner; +} PtrNode; + +typedef struct { + Node* type; + char* name; +} FuncDecParam; + +typedef struct { + FuncDecParam* params; + size_t paramsNum; + Node* ret; + char* name; +} FuncDec; + +typedef struct { + NodeInfo i; + FuncDec dec; + Node* body; + size_t bodyLen; +} FuncDefNode; + +typedef struct { + NodeInfo i; + char* name; + Node* varType; +} DimNode; + +typedef struct { + NodeInfo i; + char* func; + Node* params; + size_t paramsNum; +} FuncCallNode; + +typedef struct { + NodeInfo i; + char* variable; + Node* rValue; +} AssignNode; + +union Node { + NodeInfo i; + IntNode integer; + StringNode string; + IdentifierNode ident; + BinaryNode bin; + UnaryNode unary; + PtrNode ptr; + FuncDefNode funcDef; + DimNode dim; + FuncCallNode funcCall; + AssignNode assign; +}; + +typedef struct { + Token* tokens; + size_t tokenNum; + size_t i; +} Parser; + +Parser Parser_Init(FILE* file, const char* fileName, bool printTokens); +void Parser_PrintNode(Node* node); +Node* Parser_Parse(Parser* p, size_t* lenOut); +void Parser_FreeNode(Node* node); + +const char* Parser_TypeStr(NodeType type); + +#endif diff --git a/basic-boot/source/semanticAnalysis.c b/basic-boot/source/semanticAnalysis.c new file mode 100644 index 0000000000000000000000000000000000000000..c275153bb71bcc85fc06e2e5a9372f795796eb04 --- /dev/null +++ b/basic-boot/source/semanticAnalysis.c @@ -0,0 +1,382 @@ +#include <assert.h> +#include <string.h> +#include "mem.h" +#include "util.h" +#include "error.h" +#include "state.h" +#include "parser.h" +#include "semanticAnalysis.h" + +void SemanticAnalysis_Init(size_t wordSize) { + State_Init(); + + // add primitive types + State_MakePrimitive("u8", 1, PRIM_UINT); + State_MakePrimitive("i8", 1, PRIM_INT); + State_MakePrimitive("u16", 2, PRIM_UINT); + State_MakePrimitive("i16", 2, PRIM_INT); + State_MakePrimitive("u32", 4, PRIM_UINT); + State_MakePrimitive("i32", 4, PRIM_INT); + State_MakePrimitive("u64", 8, PRIM_UINT); + State_MakePrimitive("i64", 8, PRIM_INT); + State_MakePrimitive("uint", wordSize, PRIM_UINT); + State_MakePrimitive("int", wordSize, PRIM_INT); + State_MakePrimitive("char", 1, PRIM_UINT); + State_MakePrimitive("f32", 4, PRIM_FLOAT); + State_MakePrimitive("f64", 8, PRIM_FLOAT); + State_MakePrimitive("bool", 1, PRIM_UINT); + State_MakePrimitive("__lit", 0, PRIM_INT); + + Type type; + type.name = NewString("unit"); + type.type = TYPE_UNIT; + State_AddType(type); +} + +void Expect(Node* node, NodeType type) { + if (node->i.type != type) { + PrintError(node->i.err, + "Expected %s, got %s", Parser_TypeStr(type), + Parser_TypeStr(node->i.type) + ); + } +} + +void Unexpected(Node* node) { + PrintError(node->i.err, "Unexpected %s", Parser_TypeStr(node->i.type)); +} + +static UsedType NodeAsUsedType(Node* node) { + UsedType ret; + ret.ptr = 0; + ret.array = false; // no arrays yet + + while (true) { + switch (node->i.type) { + case NODE_PTR: { + node = node->ptr.inner; + ++ ret.ptr; + continue; + } + case NODE_IDENTIFIER: { + Type* type = State_GetType(node->ident.name); + + if (!type) { + PrintError(node->i.err, "Type '%s' does not exist", node->ident.name); + } + + ret.typeIdx = type - state.types; + return ret; + } + default: { + Unexpected(node); + exit(1); + } + } + } +} + +static Type* GetTypeFromUsed(UsedType type) { + return &state.types[type.typeIdx]; +} + +#define GET_PRIM(NAME, PTR) \ + ((UsedType) {(PTR), State_GetType(NAME) - state.types, 0}) + +static UsedType EvalType(Node* node); + +static UsedType EvalBinOp(Node* node) { + UsedType left = EvalType(node->bin.left); + UsedType right = EvalType(node->bin.right); + + Type* leftType = GetTypeFromUsed(left); + Type* rightType = GetTypeFromUsed(right); + + if ((leftType->type != TYPE_PRIM) || (rightType->type != TYPE_PRIM)) { + PrintError(node->i.err, "You can only use primitive types in binary expressions"); + } + + if (left.ptr) { + if (right.ptr) { + switch (node->bin.op) { + case TOKEN_EQUAL: + case TOKEN_LESS: + case TOKEN_GREATER: return GET_PRIM("bool", 0); + case TOKEN_SUB: return GET_PRIM("uint", 0); + default: { + PrintError( + node->i.err, "Operation '%s' not allowed here", + Lexer_TypeVAsString(node->bin.op) + ); + } + } + } + else { + switch (node->bin.op) { + case TOKEN_ADD: + case TOKEN_SUB: { + if (rightType->primType == PRIM_FLOAT) { + PrintError(node->i.err, "Cannot add float to pointer"); + } + return left; + } + default: { + PrintError( + node->i.err, "Operation '%s' not allowed here", + Lexer_TypeVAsString(node->bin.op) + ); + } + } + } + } + else if (right.ptr) { + switch (node->bin.op) { + case TOKEN_ADD: + case TOKEN_SUB: { + if (leftType->primType == PRIM_FLOAT) { + PrintError(node->i.err, "Cannot add float to pointer"); + } + return right; + } + default: { + PrintError( + node->i.err, "Operation '%s' not allowed here", + Lexer_TypeVAsString(node->bin.op) + ); + } + } + } + else if (!right.ptr) { + switch (node->bin.op) { + case TOKEN_EQUAL: return GET_PRIM("bool", 0); + case TOKEN_LESS: + case TOKEN_GREATER: { + if ((leftType->type != TYPE_PRIM) || (rightType->type != TYPE_PRIM)) { + PrintError( + node->i.err, "Operation '%s' only works on primitives", + Lexer_TypeVAsString(node->bin.op) + ); + } + return GET_PRIM("bool", 0); + } + case TOKEN_ADD: + case TOKEN_SUBTRACT: + case TOKEN_MULTIPLY: + case TOKEN_DIVIDE: + case TOKEN_MOD: { + if ((leftType->type != TYPE_PRIM) || (rightType->type != TYPE_PRIM)) { + PrintError( + node->i.err, "Operation '%s' only works on primitives", + Lexer_TypeVAsString(node->bin.op) + ); + } + + if (leftType->primType == rightType->primType) { + if (leftType->size > rightType->size) { + return left; + } + else { + return right; + } + } + else { + PrintError( + node->i.err, "Incompatible types in '%s' operation", + Lexer_TypeVAsString(node->bin.op) + ); + } + } + default: break; + } + + PrintError( + node->i.err, "Operation '%s' not allowed here", + Lexer_TypeVAsString(node->bin.op) + ); + } + + exit(1); +} + +static UsedType EvalType(Node* node) { + static bool inFunc = false; + + switch (node->i.type) { + case NODE_INT: return GET_PRIM("__lit", 0); + case NODE_STRING: return GET_PRIM("char", 1); + case NODE_IDENTIFIER: { + Var* var = State_GetVar(node->ident.name); + + if (!var) { + PrintError( + node->i.err, "Variable '%s' doesn't exist", node->ident.name + ); + } + + return var->type; + } + case NODE_BINARY_OP: return EvalBinOp(node); + case NODE_UNARY_OP: { + UsedType operand = EvalType(node->unary.operand); + Type* type = GetTypeFromUsed(operand); + + if (type->type != TYPE_PRIM) { + PrintError(node->i.err, + "Only primitive types can be used with unary operators" + ); + } + + if ((type->primType == PRIM_UINT) && (node->unary.op == TOKEN_SUBTRACT)) { + PrintWarning(node->i.err, "Using negative sign on unsigned value"); + } + + return operand; + } + case NODE_PTR: { + UsedType type = EvalType(node->ptr.inner); + ++ type.ptr; + return type; + } + case NODE_FUNC_DEF: { + if (inFunc) { + PrintError(node->i.err, "Nested function definitions are not allowed"); + } + + Function func; + func.sub = node->funcDef.dec.ret != NULL; + + if (!func.sub) { + func.ret = NodeAsUsedType(node->funcDef.dec.ret); + } + + func.paramsLen = node->funcDef.dec.paramsNum; + func.params = SafeMalloc(func.paramsLen * sizeof(FuncParam)); + + for (size_t i = 0; i < func.paramsLen; ++ i) { + func.params[i].type = NodeAsUsedType( + node->funcDef.dec.params[i].type + ); + func.params[i].name = node->funcDef.dec.params[i].name; + } + + func.name = NewString(node->funcDef.dec.name); + State_AddFunc(func); + + // now analyse the body + State_AddScope(); + inFunc = true; + + // add parameters to this scope + for (size_t i = 0; i < func.paramsLen; ++ i) { + Var var; + var.type = func.params[i].type; + var.name = NewString(func.params[i].name); + State_AddVar(var); + } + + for (size_t i = 0; i < node->funcDef.bodyLen; ++ i) { + EvalType(&node->funcDef.body[i]); + } + inFunc = false; + State_FreeScope(); + return GET_PRIM("unit", 0); + } + case NODE_FUNC_CALL: { + Function* func = State_GetFunc(node->funcCall.func); + if (!func) { + PrintError(node->i.err, "Function %s does not exist", node->funcCall.func); + } + + if (func->paramsLen != node->funcCall.paramsNum) { + PrintError( + node->i.err, "Expected %d parameters, got %d", + func->paramsLen, node->funcCall.paramsNum + ); + } + + for (size_t i = 0; i < func->paramsLen; ++ i) { + UsedType type = EvalType(&node->funcCall.params[i]); + UsedType param = func->params[i].type; + Type* paramType = GetTypeFromUsed(param); + Type* callType = GetTypeFromUsed(type); + + bool paramLit = strcmp(callType->name, "__lit") == 0; + + if (!State_UsedTypeEq(type, param)) { + if ( + (callType->type == TYPE_PRIM) && (paramType->type == TYPE_PRIM) && + (callType->primType == paramType->primType) && + (paramType->size >= callType->size) + ) { + continue; + } + + if (paramLit && (paramType->type == TYPE_PRIM)) continue; + + PrintError(node->i.err, + "Expected %s for parameter %s, got %s", + paramType->name, func->params[i].name, callType->name + ); + } + } + + if (func->sub) { + return GET_PRIM("unit", 0); + } + else { + return func->ret; + } + } + case NODE_DIM: { + Var var; + var.type = NodeAsUsedType(node->dim.varType); + var.name = NewString(node->dim.name); + State_AddVar(var); + return GET_PRIM("unit", 0); + } + case NODE_ASSIGN: { + Var* var = State_GetVar(node->assign.variable); + + if (!var) { + PrintError( + node->i.err, "Variable '%s' doesn't exist", + node->assign.variable + ); + } + + UsedType left = var->type; + UsedType right = EvalType(node->assign.rValue); + + Type* leftType = GetTypeFromUsed(left); + Type* rightType = GetTypeFromUsed(right); + + bool compatible = true; + + if ((left.ptr != right.ptr) || (leftType->type != rightType->type)) { + compatible = false; + } + else if (leftType->type == TYPE_PRIM) { + if (leftType->primType != rightType->primType) compatible = false; + else if (leftType->size < rightType->size) compatible = false; + } + + if (!compatible) { + PrintError( + node->i.err, "Type '%s' cannot be assigned to '%s' variable", + GetTypeFromUsed(left)->name, GetTypeFromUsed(right)->name + ); + } + + return GET_PRIM("unit", 0); + } + default: { + Unexpected(node); + } + } + + assert(0); +} + +void SemanticAnalysis_Analyse(Node* node) { + EvalType(node); +} diff --git a/basic-boot/source/semanticAnalysis.h b/basic-boot/source/semanticAnalysis.h new file mode 100644 index 0000000000000000000000000000000000000000..341ccb8ac4a96ebcd1d94b58b4aad9fa914a881e --- /dev/null +++ b/basic-boot/source/semanticAnalysis.h @@ -0,0 +1,9 @@ +#ifndef N_SEMANTIC_ANALYSIS_H +#define N_SEMANTIC_ANALYSIS_H + +#include "common.h" + +void SemanticAnalysis_Init(size_t wordSize); +void SemanticAnalysis_Analyse(Node* node); + +#endif diff --git a/basic-boot/source/state.c b/basic-boot/source/state.c new file mode 100644 index 0000000000000000000000000000000000000000..c2d901ca81d47638cf32a652631f8562859bda74 --- /dev/null +++ b/basic-boot/source/state.c @@ -0,0 +1,127 @@ +#include <stdio.h> +#include <string.h> +#include "mem.h" +#include "util.h" +#include "state.h" + +State state; + +void State_Init(void) { + state.types = NULL; + state.typeNum = 0; + state.scopes[0] = NULL; + state.scopeSize[0] = 0; + state.scopeNum = 1; + state.funcs = NULL; + state.funcNum = 0; +} + +void State_AddType(Type type) { + ++ state.typeNum; + state.types = SafeRealloc(state.types, state.typeNum * sizeof(Type)); + state.types[state.typeNum - 1] = type; +} + +void State_AddVar(Var var) { + size_t scope = state.scopeNum - 1; + + ++ state.scopeSize[scope]; + state.scopes[scope] = SafeRealloc( + state.scopes[scope], state.scopeSize[scope] * sizeof(Var) + ); + state.scopes[scope][state.scopeSize[scope] - 1] = var; +} + +bool State_AddScope(void) { + if (state.scopeNum >= 16) return false; + + ++ state.scopeNum; + state.scopeSize[state.scopeNum - 1] = 0; + state.scopes[state.scopeNum - 1] = NULL; + return true; +} + +void State_AddFunc(Function func) { + ++ state.funcNum; + state.funcs = SafeRealloc(state.funcs, state.funcNum * sizeof(Function)); + state.funcs[state.funcNum - 1] = func; +} + +void State_FreeScope(void) { + Var* scope = state.scopes[state.scopeNum - 1]; + size_t scopeNum = state.scopeSize[state.scopeNum - 1]; + + for (size_t i = 0; i < scopeNum; ++ i) { + free(scope[i].name); + } + + -- state.scopeNum; +} + +Var* State_GetVar(const char* name) { + for (size_t i = state.scopeNum; i --> 0;) { + for (size_t j = 0; j < state.scopeSize[i]; ++ j) { + if (strcmp(state.scopes[i][j].name, name) == 0) { + return &state.scopes[i][j]; + } + } + } + + return NULL; +} + +Type* State_GetType(const char* name) { + for (size_t i = 0; i < state.typeNum; ++ i) { + if (strcmp(state.types[i].name, name) == 0) { + return &state.types[i]; + } + } + + return NULL; +} + +Function* State_GetFunc(const char* name) { + for (size_t i = 0; i < state.funcNum; ++ i) { + if (strcmp(state.funcs[i].name, name) == 0) { + return &state.funcs[i]; + } + } + + return NULL; +} + +void State_MakePrimitive(const char* name, size_t size, int primType) { + Type type; + type.type = TYPE_PRIM; + type.name = NewString(name); + type.size = size; + type.primType = primType; + State_AddType(type); +} + +bool State_UsedTypeEq(UsedType a, UsedType b) { + return (a.ptr == b.ptr) && (a.typeIdx == b.typeIdx) && (a.array == b.array); +} + +void State_DumpInfo(void) { + puts("TYPES"); + puts("====="); + for (size_t i = 0; i < state.typeNum; ++ i) { + printf("- %s\n", state.types[i].name); + } + puts("\n"); + + puts("GLOBALS"); + puts("======="); + for (size_t i = 0; i < state.scopeSize[0]; ++ i) { + printf("- %s\n", state.scopes[0][i].name); + } + puts("\n"); + + puts("FUNCTIONS"); + puts("========="); + for (size_t i = 0; i < state.funcNum; ++ i) { + printf("- %s\n", state.funcs[i].name); + } + puts("\n"); +} diff --git a/basic-boot/source/state.h b/basic-boot/source/state.h new file mode 100644 index 0000000000000000000000000000000000000000..bff6a6faeea769784107c85cb53b3b8e1e1da066 --- /dev/null +++ b/basic-boot/source/state.h @@ -0,0 +1,80 @@ +#ifndef N_STATE_H +#define N_STATE_H + +#include "common.h" + +enum { + TYPE_PRIM, // is this "primitive", or Primula the manul? + TYPE_STRUCT, + TYPE_UNIT +}; + +enum { + PRIM_UINT, + PRIM_INT, + PRIM_FLOAT +}; + +typedef struct { + size_t ptr; + size_t typeIdx; + size_t array; // 0 if not array, contains length if not array +} UsedType; + +typedef struct { + int type; + char* name; + size_t size; + + // only for "struct" types + UsedType* structure; + size_t structLen; + + // only for "primitive" types + int primType; +} Type; + +typedef struct { + UsedType type; + char* name; +} Var; + +typedef struct { + UsedType type; + char* name; +} FuncParam; + +typedef struct { + bool sub; + UsedType ret; + FuncParam* params; + size_t paramsLen; + char* name; +} Function; + +typedef struct { + Type* types; + size_t typeNum; + Var* scopes[16]; + size_t scopeSize[16]; + size_t scopeNum; + Function* funcs; + size_t funcNum; +} State; + +extern State state; + +void State_Init(void); +void State_AddType(Type type); +void State_AddVar(Var var); +bool State_AddScope(void); +void State_AddFunc(Function func); +void State_FreeScope(void); +Var* State_GetVar(const char* name); +Type* State_GetType(const char* name); +Function* State_GetFunc(const char* name); +void State_MakePrimitive(const char* name, size_t size, int primType); +bool State_UsedTypeEq(UsedType a, UsedType b); +void State_DumpInfo(void); + +#endif diff --git a/basic-boot/source/string.c b/basic-boot/source/string.c new file mode 100644 index 0000000000000000000000000000000000000000..7e42275935d2fa0e7044dae2263a0c206aadf2de --- /dev/null +++ b/basic-boot/source/string.c @@ -0,0 +1,48 @@ +#include <stdio.h> +#include <string.h> +#include "mem.h" +#include "string.h" + +String String_New(void) { + char* contents = SafeMalloc(1); + *contents = 0; + + return (String) { + contents, 1 + }; +} + +String String_FromChar(char ch) { + String ret = String_New(); + String_AddChar(&ret, ch); + return ret; +} + +void String_Free(String* string) { + free(string->contents); +} + +void String_Add(String* string, char* value) { + size_t newLen = strlen(string->contents) + strlen(value) + 1; + size_t newCap = string->capacity; + + while (newCap < newLen) { + newCap *= 2; + } + + if (newCap != string->capacity) { + string->capacity = newCap; + string->contents = SafeRealloc(string->contents, newCap); + } + + strcat(string->contents, value); +} + +void String_AddChar(String* string, char ch) { + char str[] = {ch, 0}; + String_Add(string, str); +} + +size_t String_Len(String* string) { + return strlen(string->contents); +} diff --git a/basic-boot/source/string.h b/basic-boot/source/string.h new file mode 100644 index 0000000000000000000000000000000000000000..98e30f87cba52e57745b1493d7be6621416d8936 --- /dev/null +++ b/basic-boot/source/string.h @@ -0,0 +1,18 @@ +#ifndef N_STRING_H +#define N_STRING_H + +#include "common.h" + +typedef struct { + char* contents; + size_t capacity; +} String; + +String String_New(void); +String String_FromChar(char ch); +void String_Free(String* string); +void String_Add(String* string, char* value); +void String_AddChar(String* string, char ch); +size_t String_Len(String* string); + +#endif diff --git a/basic-boot/source/util.c b/basic-boot/source/util.c new file mode 100644 index 0000000000000000000000000000000000000000..3524bb0b4c307b7a93a3b07c1c2c13fe438d9956 --- /dev/null +++ b/basic-boot/source/util.c @@ -0,0 +1,16 @@ +#include <string.h> +#include "mem.h" +#include "common.h" + +char* NewString(const char* src) { + char* ret = SafeMalloc(strlen(src) + 1); + strcpy(ret, src); + return ret; +} + +char* ConcatString(const char* first, const char* second) { + char* ret = SafeMalloc(strlen(first) + strlen(second) + 1); + strcpy(ret, first); + strcat(ret, second); + return ret; +} diff --git a/basic-boot/source/util.h b/basic-boot/source/util.h new file mode 100644 index 0000000000000000000000000000000000000000..aa57880a037cf533331c0e4cdedfcef4953b4465 --- /dev/null +++ b/basic-boot/source/util.h @@ -0,0 +1,22 @@ +#ifndef N_UTIL_H +#define N_UTIL_H + +#include <stdio.h> + +#define FUNCTION_POINTER(TYPE, NAME, ...) TYPE (*NAME)(__VA_ARGS__) +#define MIN(A, B) (((A) < (B))? (A) : (B)) +#define MAX(A, B) (((A) > (B))? (A) : (B)) + +#define SWAP(TYPE, A, B) \ + do { \ + TYPE* macro##a = &(A); \ + TYPE* macro##b = &(B); \ + TYPE macro##tmp = *macro##a; \ + *macro##a = *macro##b; \ + *macro##b = macro##tmp; \ + } while (0); + +char* NewString(const char* src); +char* ConcatString(const char* first, const char* second); + +#endif diff --git a/basic-boot/test.bas b/basic-boot/test.bas new file mode 100644 index 0000000000000000000000000000000000000000..af13a8b74c4cbcb49dd5ac303c39c0578ebf48fb --- /dev/null +++ b/basic-boot/test.bas @@ -0,0 +1,20 @@ +'NITRON + +dim foo as int + +func manul(foo as int, bar as int) int + dim bar as u32 +end + +manul 1, (2 * 3) + -5 * 4 + +foo = 3 + 4 + +dim a as int +dim b as f32 +dim c as int + +manul a + c, 5 + +dim myPtr as ptr(int) +myPtr = myPtr * 5 diff --git a/kernel/Makefile b/kernel/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..7a6707ef8c225fc324aed07d75c627dc16583acb --- /dev/null +++ b/kernel/Makefile @@ -0,0 +1,67 @@ +SOURCES := $(wildcard source/*.c) $(wildcard source/**/*.c) +OBJECTS := $(patsubst source/%.c,bin/%.o,$(SOURCES)) +OUT := nitron +LD := $(CC) + +override CFLAGS += -std=c99 -Wall -Wextra -Wuninitialized -Wundef -pedantic -Ilib -m32 +override CFLAGS += -DN_DEVICE_HOST +override LDLIBS += -lm -m32 + +ifeq ($(BUILD),release) + override CFLAGS += -O3 + #override CPPFLAGS += -NDEBUG +else + override CFLAGS += -Og -g + ifeq ($(ASAN), y) + override CFLAGS += -fno-omit-frame-pointer -fsanitize=address + override LDFLAGS += -fsanitize=address + endif + + ifeq ($(SYS_ALLOC), y) + override CFLAGS += -DN_SYS_ALLOC + endif + + ifeq ($(REI_ALLOC), y) + override CFLAGS += -DN_REI_ALLOC + endif +endif + +.SECONDEXPANSION: + +deps.filter := %.c %.h +deps.option := -MM +define deps +$$(filter $$(deps.filter),,$$(shell $(CC) $(CFLAGS) $(CPPFLAGS) -E $(deps.option) $(1))) +endef + +all: $(OUT) + @: + +run: $(OUT) + '$(dir $<)$(notdir $<)' $(RUNFLAGS) + +$(OUT): $(OBJECTS) + $(LD) $(LDFLAGS) $^ $(LDLIBS) -o $@ + +bin/: + mkdir -p bin + +bin/fs: + mkdir -p bin/fs + +bin/disk: + mkdir -p bin/disk + +bin/system: + mkdir -p bin/system + +bin/%.o: source/%.c $(call deps,source/%.c) romfs.h | bin/ bin/fs bin/disk bin/system + $(CC) $(CFLAGS) $(CPPFLAGS) $< -c -o $@ + +clean: + rm -r bin + +distclean: clean + rm $(OUT) + +.PHONY: all run clean distclean diff --git a/kernel/source/common.h b/kernel/source/common.h new file mode 100644 index 0000000000000000000000000000000000000000..0f2bbb6733256481d77ba83a8ebb35a04e561748 --- /dev/null +++ b/kernel/source/common.h @@ -0,0 +1,7 @@ +#ifndef N_COMMON_H +#define N_COMMON_H + +#include <stdint.h> +#include <stdlib.h> + +#endif diff --git a/kernel/source/vm.h b/kernel/source/vm.h new file mode 100644 index 0000000000000000000000000000000000000000..299760539cd2593075dc82270addc8b2db860f98 --- /dev/null +++ b/kernel/source/vm.h @@ -0,0 +1,8 @@ +#ifndef N_VM_H +#define N_VM_H + +typedef struct { + +} VMState; + +#endif