+ * We cannoy rely on C99 at all, since compilers like MSVC
+ * simply don't support it. We define our own boolean type
+ * as a result (since we cannot include <stdbool.h>). For
+ * compilers that are in 1999 mode (C99 compliant) we can use
+ * the language keyword _Bool which can allow for better code
+ * on GCC and GCC-like compilers, opposed to `int`.
+ */
+#ifndef __cplusplus
+# ifdef false
+# undef false
+# endif /* !false */
+# ifdef true
+# undef true
+# endif /* !true */
+# define false (0)
+# define true (1)
+# ifdef __STDC_VERSION__
+# if __STDC_VERSION__ < 199901L && __GNUC__ < 3
+ typedef int bool;
+# else
+ typedef _Bool bool;
+# endif
+# else
+ typedef int bool;
+# endif /* !__STDC_VERSION__ */
+#endif /* !__cplusplus */
+
+/*
+ * Of some functions which are generated we want to make sure
+ * that the result isn't ignored. To find such function calls,
+ * we use this macro.
+ */
+#if defined(__GNUC__) || defined(__CLANG__)
+# define GMQCC_WARN __attribute__((warn_unused_result))
+#else
+# define GMQCC_WARN
+#endif
+/*
+ * This is a hack to silent clang regarding empty
+ * body if statements.
+ */
+#define GMQCC_SUPPRESS_EMPTY_BODY do { } while (0)
+
+/*
+ * Inline is not supported in < C90, however some compilers
+ * like gcc and clang might have an inline attribute we can
+ * use if present.
+ */
+#ifdef __STDC_VERSION__
+# if __STDC_VERSION__ < 199901L
+# if defined(__GNUC__) || defined (__CLANG__)
+# if __GNUC__ < 2
+# define GMQCC_INLINE
+# else
+# define GMQCC_INLINE __attribute__ ((always_inline))
+# endif
+# else
+# define GMQCC_INLINE
+# endif
+# else
+# define GMQCC_INLINE inline
+# endif
+#else
+# define GMQCC_INLINE
+#endif /* !__STDC_VERSION__ */
+
+/*
+ * noreturn is present in GCC and clang
+ * it's required for _ast_node_destory otherwise -Wmissing-noreturn
+ * in clang complains about there being no return since abort() is
+ * called.
+ */
+#if (defined(__GNUC__) && __GNUC__ >= 2) || defined(__CLANG__)
+# define GMQCC_NORETURN __attribute__ ((noreturn))
+#else
+# define GMQCC_NORETURN
+#endif
+
+/*
+ * stdint.h and inttypes.h -less subset
+ * for systems that don't have it, which we must
+ * assume is all systems. (int8_t not required)
+ */
+#if CHAR_MIN == -128
+ typedef unsigned char uint8_t; /* same as below */
+#elif SCHAR_MIN == -128
+ typedef unsigned char uint8_t; /* same as above */
+#endif
+#if SHRT_MAX == 0x7FFF
+ typedef short int16_t;
+ typedef unsigned short uint16_t;
+#elif INT_MAX == 0x7FFF
+ typedef int int16_t;
+ typedef unsigned int uint16_t;
+#endif
+#if INT_MAX == 0x7FFFFFFF
+ typedef int int32_t;
+ typedef unsigned int uint32_t;
+ typedef long int64_t;
+ typedef unsigned long uint64_t;
+#elif LONG_MAX == 0x7FFFFFFF
+ typedef long int32_t;
+ typedef unsigned long uint32_t;
+
+ /*
+ * It's nearly impossible to figure out a 64bit type at
+ * this point without making assumptions about the build
+ * enviroment. So if clang or gcc is detected use some
+ * compiler builtins to create a 64 signed and unsigned
+ * type.
+ */
+# if defined(__GNUC__) || defined (__CLANG__)
+ typedef int int64_t __attribute__((__mode__(__DI__)));
+ typedef unsigned int uint64_t __attribute__((__mode__(__DI__)));
+# else
+ /*
+ * Incoorectly size the types so static assertions below will
+ * fail. There is no valid way to get a 64bit type at this point
+ * without making assumptions of too many things.
+ */
+ typedef struct { char _fail : 0; } int64_t;
+ typedef struct { char _fail : 0; } uint64_t;
+# endif
+#endif
+#ifdef _LP64 /* long pointer == 64 */
+ typedef unsigned long uintptr_t;
+ typedef long intptr_t;
+#else
+ typedef unsigned int uintptr_t;
+ typedef int intptr_t;
+#endif
+/* Ensure type sizes are correct: */
+typedef char uint8_size_is_correct [sizeof(uint8_t) == 1?1:-1];
+typedef char uint16_size_is_correct [sizeof(uint16_t) == 2?1:-1];
+typedef char uint32_size_is_correct [sizeof(uint32_t) == 4?1:-1];
+typedef char uint64_size_is_correct [sizeof(uint64_t) == 8?1:-1];
+typedef char int16_size_if_correct [sizeof(int16_t) == 2?1:-1];
+typedef char int32_size_is_correct [sizeof(int32_t) == 4?1:-1];
+typedef char int64_size_is_correct [sizeof(int64_t) == 8?1:-1];
+/* intptr_t / uintptr_t correct size check */
+typedef char uintptr_size_is_correct[sizeof(intptr_t) == sizeof(int*)?1:-1];
+typedef char intptr_size_is_correct [sizeof(uintptr_t)== sizeof(int*)?1:-1];
+
+/*===================================================================*/
+/*=========================== util.c ================================*/
+/*===================================================================*/
+void *util_memory_a (unsigned int, unsigned int, const char *);
+void util_memory_d (void *, unsigned int, const char *);
+void util_meminfo ();
+
+bool util_strupper (const char *);
+bool util_strdigit (const char *);
+bool util_strncmpexact (const char *, const char *, size_t);
+char *util_strdup (const char *);
+char *util_strrq (const char *);
+char *util_strrnl (const char *);
+char *util_strsws (const char *);
+char *util_strchp (const char *, const char *);
+void util_debug (const char *, const char *, ...);
+int util_getline (char **, size_t *, FILE *);
+void util_endianswap (void *, int, int);
+
+size_t util_strtocmd (const char *, char *, size_t);
+size_t util_strtononcmd (const char *, char *, size_t);
+
+uint32_t util_crc32(const char *, int, register const short);
+
+#ifdef NOTRACK
+# define mem_a(x) malloc(x)
+# define mem_d(x) free (x)
+#else
+# define mem_a(x) util_memory_a((x), __LINE__, __FILE__)
+# define mem_d(x) util_memory_d((x), __LINE__, __FILE__)
+#endif
+
+/*
+ * TODO: make these safer to use. Currently this only works on
+ * x86 and x86_64, some systems will likely not like this. Such
+ * as BE systems.
+ */
+#define FLT2INT(Y) *((int32_t*)&(Y))
+#define INT2FLT(Y) *((float *)&(Y))
+
+/* Builds vector type (usefull for inside structures) */
+#define VECTOR_SNAP(X,Y) X ## Y
+#define VECTOR_FILL(X,Y) VECTOR_SNAP(X,Y)
+#define VECTOR_TYPE(T,N) \
+ T* N##_data = NULL; \
+ long N##_elements = 0; \
+ long N##_allocated = 0
+/* Builds vector add */
+#define VECTOR_CORE(T,N) \
+ int N##_add(T element) { \
+ void *temp = NULL; \
+ if (N##_elements == N##_allocated) { \
+ if (N##_allocated == 0) { \
+ N##_allocated = 12; \
+ } else { \
+ N##_allocated *= 2; \
+ } \
+ if (!(temp = mem_a(N##_allocated * sizeof(T)))) { \
+ mem_d(temp); \
+ return -1; \
+ } \
+ memcpy(temp, N##_data, (N##_elements * sizeof(T))); \
+ mem_d(N##_data); \
+ N##_data = (T*)temp; \
+ } \
+ N##_data[N##_elements] = element; \
+ return N##_elements++; \
+ } \
+ int N##_put(T* elements, size_t len) { \
+ len --; \
+ elements--; \
+ while (N##_add(*++elements) != -1 && len--); \
+ return N##_elements; \
+ } \
+ typedef char VECTOR_FILL(extra_semicolon_##N,__COUNTER__)
+#define VECTOR_PROT(T,N) \
+ extern T* N##_data ; \
+ extern long N##_elements ; \
+ extern long N##_allocated; \
+ int N##_add(T); \
+ int N##_put(T *, size_t)
+#define VECTOR_MAKE(T,N) \
+ VECTOR_TYPE(T,N); \
+ VECTOR_CORE(T,N)
+
+/*===================================================================*/
+/*=========================== code.c ================================*/
+/*===================================================================*/
+
+/* Note: if you change the order, fix type_sizeof in ir.c */
+enum {
+ TYPE_VOID ,
+ TYPE_STRING ,
+ TYPE_FLOAT ,
+ TYPE_VECTOR ,
+ TYPE_ENTITY ,
+ TYPE_FIELD ,
+ TYPE_FUNCTION ,
+ TYPE_POINTER ,
+ TYPE_INTEGER ,
+ TYPE_VARIANT ,
+
+ TYPE_COUNT
+};
+
+extern const char *type_name[TYPE_COUNT];
+
+extern size_t type_sizeof[TYPE_COUNT];
+extern uint16_t type_store_instr[TYPE_COUNT];
+/* could use type_store_instr + INSTR_STOREP_F - INSTR_STORE_F
+ * but this breaks when TYPE_INTEGER is added, since with the enhanced
+ * instruction set, the old ones are left untouched, thus the _I instructions
+ * are at a seperate place.
+ */
+extern uint16_t type_storep_instr[TYPE_COUNT];
+
+typedef struct {
+ uint32_t offset; /* Offset in file of where data begins */
+ uint32_t length; /* Length of section (how many of) */
+} prog_section;
+
+typedef struct {
+ uint32_t version; /* Program version (6) */
+ uint16_t crc16; /* What is this? */
+ uint16_t skip; /* see propsal.txt */
+
+ prog_section statements; /* prog_section_statement */
+ prog_section defs; /* prog_section_def */
+ prog_section fields; /* prog_section_field */
+ prog_section functions; /* prog_section_function */
+ prog_section strings; /* What is this? */
+ prog_section globals; /* What is this? */
+ uint32_t entfield; /* Number of entity fields */
+} prog_header;
+
+/*
+ * Each paramater incerements by 3 since vector types hold
+ * 3 components (x,y,z).
+ */
+#define OFS_NULL 0
+#define OFS_RETURN 1
+#define OFS_PARM0 (OFS_RETURN+3)
+#define OFS_PARM1 (OFS_PARM0 +3)
+#define OFS_PARM2 (OFS_PARM1 +3)
+#define OFS_PARM3 (OFS_PARM2 +3)
+#define OFS_PARM4 (OFS_PARM3 +3)
+#define OFS_PARM5 (OFS_PARM4 +3)
+#define OFS_PARM6 (OFS_PARM5 +3)
+#define OFS_PARM7 (OFS_PARM6 +3)
+
+typedef struct {
+ uint16_t opcode;
+
+ /* operand 1 */
+ union {
+ int16_t s1; /* signed */
+ uint16_t u1; /* unsigned */
+ } o1;
+ /* operand 2 */
+ union {
+ int16_t s1; /* signed */
+ uint16_t u1; /* unsigned */
+ } o2;
+ /* operand 3 */
+ union {
+ int16_t s1; /* signed */
+ uint16_t u1; /* unsigned */
+ } o3;
+
+ /*
+ * This is the same as the structure in darkplaces
+ * {
+ * unsigned short op;
+ * short a,b,c;
+ * }
+ * But this one is more sane to work with, and the
+ * type sizes are guranteed.
+ */
+} prog_section_statement;
+
+typedef struct {
+ /* The types:
+ * 0 = ev_void
+ * 1 = ev_string
+ * 2 = ev_float
+ * 3 = ev_vector
+ * 4 = ev_entity
+ * 5 = ev_field
+ * 6 = ev_function
+ * 7 = ev_pointer -- engine only
+ * 8 = ev_bad -- engine only
+ */
+ uint16_t type;
+ uint16_t offset;
+ uint32_t name;
+} prog_section_both;
+typedef prog_section_both prog_section_def;
+typedef prog_section_both prog_section_field;
+
+typedef struct {
+ int32_t entry; /* in statement table for instructions */
+ uint32_t firstlocal; /* First local in local table */
+ uint32_t locals; /* Total ints of params + locals */
+ uint32_t profile; /* Always zero (engine uses this) */
+ uint32_t name; /* name of function in string table */
+ uint32_t file; /* file of the source file */
+ uint32_t nargs; /* number of arguments */
+ uint8_t argsize[8]; /* size of arguments (keep 8 always?) */
+} prog_section_function;