mirror of
https://github.com/kanaka/mal.git
synced 2024-09-21 10:37:58 +03:00
129 lines
4.4 KiB
SQL
129 lines
4.4 KiB
SQL
-- ---------------------------------------------------------
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-- printer.sql
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CREATE OR REPLACE PACKAGE printer IS
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FUNCTION pr_str_seq(M IN OUT NOCOPY types.mal_table,
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H IN OUT NOCOPY types.map_entry_table,
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seq mal_vals, sep varchar2,
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print_readably boolean DEFAULT TRUE) RETURN varchar;
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FUNCTION pr_str(M IN OUT NOCOPY types.mal_table,
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H IN OUT NOCOPY types.map_entry_table,
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ast integer,
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print_readably boolean DEFAULT TRUE) RETURN varchar;
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END printer;
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/
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show errors;
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CREATE OR REPLACE PACKAGE BODY printer AS
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FUNCTION pr_str_seq(M IN OUT NOCOPY types.mal_table,
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H IN OUT NOCOPY types.map_entry_table,
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seq mal_vals, sep varchar2,
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print_readably boolean DEFAULT TRUE) RETURN varchar IS
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first integer := 1;
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str CLOB;
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BEGIN
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FOR i IN 1..seq.COUNT LOOP
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IF first = 1 THEN
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first := 0;
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ELSE
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str := str || sep;
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END IF;
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str := str || pr_str(M, H, seq(i), print_readably);
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END LOOP;
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RETURN str;
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END;
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FUNCTION pr_str_map(M IN OUT NOCOPY types.mal_table,
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H IN OUT NOCOPY types.map_entry_table,
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midx integer, sep varchar2,
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print_readably boolean DEFAULT TRUE) RETURN varchar IS
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key varchar2(256);
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first integer := 1;
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str CLOB;
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BEGIN
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key := H(midx).FIRST();
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WHILE key IS NOT NULL LOOP
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IF first = 1 THEN
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first := 0;
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ELSE
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str := str || sep;
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END IF;
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str := str || pr_str(M, H, types.string(M, key), print_readably);
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str := str || ' ' || pr_str(M, H, H(midx)(key), print_readably);
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key := H(midx).NEXT(key);
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END LOOP;
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RETURN str;
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END;
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FUNCTION pr_str(M IN OUT NOCOPY types.mal_table,
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H IN OUT NOCOPY types.map_entry_table,
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ast integer,
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print_readably boolean DEFAULT TRUE) RETURN varchar IS
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type_id integer;
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first integer := 1;
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i integer;
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str CLOB;
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malfn mal_func_T;
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BEGIN
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type_id := M(ast).type_id;
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-- io.writeline('pr_str type: ' || type_id);
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CASE
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WHEN type_id = 0 THEN RETURN 'nil';
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WHEN type_id = 1 THEN RETURN 'false';
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WHEN type_id = 2 THEN RETURN 'true';
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WHEN type_id = 3 THEN -- integer
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RETURN CAST(TREAT(M(ast) AS mal_int_T).val_int as varchar);
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WHEN type_id IN (5,6) THEN -- string
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IF type_id = 5 THEN
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str := TREAT(M(ast) as mal_str_T).val_str;
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ELSE
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str := TREAT(M(ast) as mal_long_str_T).val_long_str;
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END IF;
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IF chr(127) = SUBSTR(str, 1, 1) THEN
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RETURN ':' || SUBSTR(str, 2, LENGTH(str)-1);
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ELSIF print_readably THEN
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str := REPLACE(str, chr(92), '\\');
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str := REPLACE(str, '"', '\"');
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str := REPLACE(str, chr(10), '\n');
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RETURN '"' || str || '"';
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ELSE
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RETURN str;
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END IF;
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RETURN TREAT(M(ast) AS mal_str_T).val_str;
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WHEN type_id = 7 THEN -- symbol
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RETURN TREAT(M(ast) AS mal_str_T).val_str;
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WHEN type_id = 8 THEN -- list
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RETURN '(' || pr_str_seq(M, H,
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TREAT(M(ast) AS mal_seq_T).val_seq, ' ',
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print_readably) || ')';
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WHEN type_id = 9 THEN -- vector
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RETURN '[' || pr_str_seq(M, H,
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TREAT(M(ast) AS mal_seq_T).val_seq, ' ',
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print_readably) || ']';
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WHEN type_id = 10 THEN -- hash-map
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RETURN '{' || pr_str_map(M, H,
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TREAT(M(ast) AS mal_map_T).map_idx, ' ',
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print_readably) || '}';
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WHEN type_id = 11 THEN -- native function
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RETURN '#<function ' ||
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TREAT(M(ast) AS mal_str_T).val_str ||
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'>';
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WHEN type_id = 12 THEN -- mal function
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malfn := TREAT(M(ast) AS mal_func_T);
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RETURN '(fn* ' || pr_str(M, H, malfn.params, print_readably) ||
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' ' || pr_str(M, H, malfn.ast, print_readably) || ')';
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WHEN type_id = 13 THEN -- atom
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RETURN '(atom ' ||
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pr_str(M, H, TREAT(M(ast) AS mal_atom_T).val, print_readably) ||
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')';
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ELSE
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RETURN 'unknown';
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END CASE;
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END;
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END printer;
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/
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show errors;
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