diff options
Diffstat (limited to 'boot')
| -rw-r--r-- | boot/lex.c | 10 | ||||
| -rw-r--r-- | boot/parse.c | 15 |
2 files changed, 24 insertions, 1 deletions
diff --git a/boot/lex.c b/boot/lex.c index e8432f6..c850534 100644 --- a/boot/lex.c +++ b/boot/lex.c @@ -84,6 +84,8 @@ enum Token_Kind TOKEN_WORD_RETURN, TOKEN_WORD_VAR, TOKEN_WORD_TYPE, + TOKEN_WORD_TRUE, + TOKEN_WORD_FALSE, TOKEN_ROUND_OPEN, TOKEN_ROUND_CLOSE, @@ -160,6 +162,10 @@ token_kind_to_string(enum Token_Kind kind) return "WORD_VAR"; case TOKEN_WORD_TYPE: return "WORD_TYPE"; + case TOKEN_WORD_TRUE: + return "WORD_TRUE"; + case TOKEN_WORD_FALSE: + return "WORD_FALSE"; case TOKEN_ROUND_OPEN: return "ROUND_OPEN"; @@ -612,6 +618,10 @@ lexer_word_from_name(struct Lexer* l, struct String word_or_name) return TOKEN_WORD_VAR; case 91700392: // "type" return TOKEN_WORD_TYPE; + case 2588936279: // "true" + return TOKEN_WORD_TRUE; + case 1548710142: // "false" + return TOKEN_WORD_FALSE; default: return TOKEN_NONE; } diff --git a/boot/parse.c b/boot/parse.c index 38cb712..b009656 100644 --- a/boot/parse.c +++ b/boot/parse.c @@ -194,6 +194,17 @@ parser_expression_primary_string(struct Parser* p, struct Parser_Error* error) } struct Expression* +parser_expression_primary_boolean(struct Parser* p, struct Parser_Error* error) +{ + struct Token token = parser_next(p); + check(token.kind == TOKEN_WORD_TRUE || token.kind == TOKEN_WORD_FALSE, + "expected boolean literal"); + bool literal = token.kind == TOKEN_WORD_TRUE; + union Expression_Value expr_value = { .bool_literal = { literal } }; + return expression_new(EXPRESSION_BOOLEAN_LITERAL, expr_value, token.span, token.location); +} + +struct Expression* parser_expression_primary_group(struct Parser* p, struct Parser_Error* error) { struct Token start_token = CHECK(parser_need(p, TOKEN_ROUND_OPEN, error)); @@ -218,9 +229,11 @@ parser_expression_primary(struct Parser* p, struct Parser_Error* error) return parser_expression_primary_float(p, error); case TOKEN_LITERAL_STRING: return parser_expression_primary_string(p, error); + case TOKEN_WORD_TRUE: + case TOKEN_WORD_FALSE: + return parser_expression_primary_boolean(p, error); case TOKEN_ROUND_OPEN: return parser_expression_primary_group(p, error); - // TODO: boolean literals. default: *error = parser_error(PARSER_ERROR_EXPECTED_PRIMARY_EXPRESSION); return nil; |