74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
#ifndef CODEGEN_H
|
|
#define CODEGEN_H
|
|
#include "eval.h"
|
|
#include "vector.h"
|
|
|
|
#include <stdarg.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#define INDENT 4
|
|
|
|
#define MSG_MAGIC_START 0xCAFEF00DBEEFDEADUL
|
|
#define MSG_MAGIC_END 0xF00DBEEFCAFEDEADUL
|
|
|
|
// Struct used to define the relative alignment when working with structs
|
|
typedef struct {
|
|
Alignment align;
|
|
uint8_t offset;
|
|
} CurrentAlignment;
|
|
|
|
typedef struct {
|
|
void (*write)(void *w, const char *data, size_t len);
|
|
void (*format)(void *w, const char *fmt, va_list args);
|
|
} Writer;
|
|
|
|
typedef struct {
|
|
Writer w;
|
|
CharVec buf;
|
|
} BufferedWriter;
|
|
|
|
typedef struct {
|
|
Writer w;
|
|
FILE *fd;
|
|
} FileWriter;
|
|
|
|
typedef struct {
|
|
Writer w;
|
|
} NullWriter;
|
|
|
|
BufferedWriter buffered_writer_init();
|
|
void buffered_writer_drop(BufferedWriter w);
|
|
FileWriter file_writer_init(const char *path);
|
|
FileWriter file_writer_from_fd(FILE *fd);
|
|
void file_writer_drop(FileWriter w);
|
|
NullWriter null_writer_init();
|
|
|
|
void wt_write(Writer *w, const char *data, size_t len);
|
|
void wt_format(Writer *w, const char *fmt, ...);
|
|
|
|
// Define the structs of a program in the correct order (respecting direct dependencies)
|
|
void define_structs(Program *p, Writer *w, void (*define)(Writer *w, StructObject *, void *), void *user_data);
|
|
char *pascal_to_snake_case(StringSlice str);
|
|
char *snake_case_to_screaming_snake_case(StringSlice str);
|
|
|
|
// Check if c is aligned to alignment to
|
|
static inline bool calign_is_aligned(CurrentAlignment c, Alignment to) {
|
|
assert(to.value <= c.align.value, "Can't know if calign is aligned to aligment if major alignment is less");
|
|
return (c.offset & to.mask) == 0;
|
|
}
|
|
// Add offset to the offset of c
|
|
static inline CurrentAlignment calign_add(CurrentAlignment c, uint8_t offset) {
|
|
c.offset += offset;
|
|
c.offset &= c.align.mask;
|
|
return c;
|
|
}
|
|
// Compute the number of bytes of padding needed to be aligned to a from c.
|
|
static inline uint8_t calign_to(CurrentAlignment c, Alignment a) {
|
|
assert(a.value <= c.align.value, "Can't align when major alignment is less than requested alignment");
|
|
return (-c.offset) & a.mask;
|
|
}
|
|
|
|
#endif
|