#ifndef TCC_STATE_H
# define TCC_STATE_H 1

# include <setjmp.h>
# include <stdint.h>
# include <stdio.h>
# include <tcc/io.h>

# include <tcc/utils/cstring.h>

# define TCC_WARN_ON 1 /** warning is on (-Woption) */

# define TCC_INCLUDE_STACK_SIZE 32
# define TCC_IFDEF_STACK_SIZE   64
# define TCC_CACHED_INCLUDES_HASH_SIZE 32
# define TCC_PACK_STACK_SIZE 8

typedef struct TCCState TCCState;
typedef struct COFFSym COFFSym;
typedef struct COFFReloc COFFReloc;
typedef struct CachedInclude CachedInclude;
typedef struct InlineFunc InlineFunc;

typedef struct TCCStrtab {
	size_t len;
	char *tab;
} TCCStrtab;

typedef struct TCCSymtab {
	size_t nsym;
	size_t start;
	COFFSym *syms;
	TCCStrtab strtab;
} TCCSymtab;

typedef struct TCCSection {
	uint32_t data_offset;
	uint8_t *data;
	uint32_t data_allocated;

	TCCState *state;

	char name[8]; /** section name */
	int32_t flags;
	int16_t secnum;
	int16_t addralign;
	uint16_t type;
	size_t offset;

	size_t nreloc;
	COFFReloc *reloc;
	struct TCCSection *prev;
} TCCSection;

struct TCCState {
	uint8_t verbose;        /** if 1, display some information during compilation */
	uint8_t nostdinc;       /** if 1, no standard headers are added */
	uint8_t nostdlib;       /** if 1, no standard libraries are added */
	uint8_t symbolic;       /** if 1, resolve symbols in the current module first */
	uint8_t filetype;       /** file type for compilation (NONE, C, ASM) */
	uint8_t optimize;       /** only to #define __OPTIMIZE__ */
	uint8_t option_pthread; /** -pthread option */
	uint32_t cversion;      /** suppported C ISO version, 199901 (default), 201112, ... */

	/* C language options */
	uint8_t char_is_unsigned;
	uint8_t leading_underscore;
	uint8_t ms_extensions;          /** allow nested named struct w/o identifier behave lile unnamed */
	uint8_t dollars_in_identifiers; /** allows '$' char in identifiers */
	uint8_t ms_bitfields;           /** if 1, emulate MS algorithm for aligning bitfields */
	uint8_t reverse_funcargs;       /** if 1, evaluate last function arg first */
	uint8_t gnu89_inline;           /** treat 'extern inline' like 'static inline' */

	/* warning switches */
	uint8_t warn_none;
	uint8_t warn_all;
	uint8_t warn_error;
	uint8_t warn_write_strings;
	uint8_t warn_unsupported;
	uint8_t warn_implicit_function_declaration;
	uint8_t warn_discarded_qualifiers;
	uint8_t warn_num;                             /** temp var for tcc_warning_c() */

	uint8_t option_r;          /** option -r */
	uint8_t do_bench;          /** option -bench */
	uint8_t just_deps;         /** option -M */
	uint8_t gen_deps;          /** option -MD */
	uint8_t include_sys_deps;  /** option -MD */
	uint8_t gen_phony_deps;    /** option -MP */

	uint8_t gnu_ext; /** use GNU C extensions */
	uint8_t tcc_ext; /** use TinyCC extensions */
	
	uint8_t dflag; /** -dX value */
	uint8_t Pflag;  /** -P switch (LINE_MACRO_OUTPUT_FORMAT) */

	uint8_t has_text_addr;
	uint32_t text_addr;     /** address of text section */
	unsigned section_align; /** section alignment */

	char *tcc_lib_path;  /** CONFIG_TCCDIR or -B option */
	char *entryname;     /** "_start" unless set */

	int output_type;   /** output type, see TCC_OUTPUT_xxx */
	int output_format; /** output format, see TCC_OUTPUT_FORMAT_xxx */

	/* include paths */
	char **include_paths;
	int nb_include_paths;

	char **sysinclude_paths;
	int nb_sysinclude_paths;

	/* library paths */
	char **library_paths;
	int nb_library_paths;

	/* crt?.o object path */
	char **crt_paths;
	int nb_crt_paths;

	CString cmdline_defs; /** -D / -U options */
	CString cmdline_incl; /** -include options */

	/** error handling  */
	void *error_opaque;
	void (*error_func)(void *opaque, const char *msg);
	int error_set_jmp_enabled;
	jmp_buf error_jmp_buf;
	int nb_errors;

	FILE *ppfp; /** output file for preprocessing (-E) */

	char **target_deps; /** for -MD/-MF: collected dependencies for this compilation */
	int nb_target_deps;

	/* compilation */
	BufferedFile *include_stack[TCC_INCLUDE_STACK_SIZE];
	BufferedFile **include_stack_ptr;

	int ifdef_stack[TCC_IFDEF_STACK_SIZE];
	int *ifdef_stack_ptr;

	/* included files enclosed with #ifndef MACRO */
	int cached_includes_hash[TCC_CACHED_INCLUDES_HASH_SIZE];
	CachedInclude **cached_includes;
	int nb_cached_includes;

	/* #pragma pack stack */
	int pack_stack[TCC_PACK_STACK_SIZE];
	int *pack_stack_ptr;
	char **pragma_libs;
	int nb_pragma_libs;

	/* inline functions are stored as token lists and compiled last only if referenced */
	InlineFunc **inline_fns;
	int nb_inline_fns;

	/* sections */
	TCCSection **sections;
	int nb_sections; /** number of sections, including first dummy section */

	/* predefined sections */
	TCCSection *text_section;
	TCCSection *data_section;
	TCCSection *rodata_section;
	TCCSection *bss_section;
	TCCSection *cur_text_section; /** current section where function code is generated */

	/* symbol data */
	TCCSymtab *symtab;

	/* benchmark info */
	int total_idents;
	int total_lines;
	uint32_t total_bytes;
	uint32_t total_output[4];

	/* for warnings/errors for object files */
	const char *current_filename;

	/* used by main and tcc_parse_args only */
	void **files; /** files seen on command line */
	int nb_files; /** number thereof */
	int nb_libraries; /** number of libs thereof */
	char *outfile; /** output filename */
	char *deps_outfile; /** option -MF */
	int argc;
	char **argv;
	CString linker_arg; /** collect -Wl options */
};

#endif /* !TCC_STATE_H */