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initial scanner changes draft

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This commit is contained in:
Ivar Fatland
2026-03-24 23:52:05 +01:00
parent d34fec63a0
commit de5a5cd9c2
1 changed files with 25 additions and 18 deletions
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cig.h
+25 -18
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@@ -353,32 +353,39 @@ typedef struct scanner {
allocator_t allocator; allocator_t allocator;
} scanner_t; } scanner_t;
// TODO: replace implementations to use this. also put the value here. make separate error message type and make union with the value.
typedef struct scanner_result {
bool ok;
const char *filename;
int line;
int column;
const char *not_ok_message;
} scanner_result_t;
scanner_t make_scanner(const char *name, const char *buffer, allocator_t allocator); scanner_t make_scanner(const char *name, const char *buffer, allocator_t allocator);
void scanner_recover(scanner_t *s); void scanner_recover(scanner_t *s);
void scanner_error(scanner_t *s, const char *message); void scanner_error(scanner_t *s, const char *message);
void scanner_error_and_recover(scanner_t *s, const char *message); void scanner_error_and_recover(scanner_t *s, const char *message);
bool scan_eof(scanner_t *s); scanner_result_t scan_eof(scanner_t *s);
bool scan_literal(scanner_t *s, const char *lit); scanner_result_t scan_literal(scanner_t *s, const char *lit);
int scan_repeat_literal(scanner_t *s, const char *lit); int scan_repeat_literal(scanner_t *s, const char *lit);
bool scan_whitespace(scanner_t *s); scanner_result_t scan_whitespace(scanner_t *s);
bool scan_digit(scanner_t *s); scanner_result_t scan_digit(scanner_t *s);
bool scan_i64(scanner_t *s); scanner_result_t scan_i64(scanner_t *s);
bool scan_i32(scanner_t *s); scanner_result_t scan_i32(scanner_t *s);
bool scan_i16(scanner_t *s); scanner_result_t scan_i16(scanner_t *s);
bool scan_i8(scanner_t *s); scanner_result_t scan_i8(scanner_t *s);
bool scan_u64(scanner_t *s); scanner_result_t scan_u64(scanner_t *s);
bool scan_u32(scanner_t *s); scanner_result_t scan_u32(scanner_t *s);
bool scan_u16(scanner_t *s); scanner_result_t scan_u16(scanner_t *s);
bool scan_u8(scanner_t *s); scanner_result_t scan_u8(scanner_t *s);
bool scan_f64(scanner_t *s); scanner_result_t scan_f64(scanner_t *s);
bool scan_f32(scanner_t *s); scanner_result_t scan_f32(scanner_t *s);
// Scan as much of an identifier as possible, you are responsible to scan for // Scan as much of an identifier as possible, you are responsible to scan for
// valid characters after the identifier is scanned. // valid characters after the identifier is scanned.
bool scan_identifier(scanner_t *s); scanner_result_t scan_identifier(scanner_t *s);
bool scan_string_literal(scanner_t *s); scanner_result_t scan_string_literal(scanner_t *s);
bool scanner_print_errors(scanner_t *s, FILE *fp); bool scanner_print_errors(scanner_t *s, FILE *fp);
bool looks_like_float(scanner_t *s);
bool looks_like_int(scanner_t *s);
// string builder ////////////////////////////////////////////////////////////// // string builder //////////////////////////////////////////////////////////////
typedef struct string_builder_node { typedef struct string_builder_node {