| 1 | open Printf |
| 2 | |
| 3 | module List = ListLabels |
| 4 | |
| 5 | let test_01 = |
| 6 | let name = "an array type and an array variable" in |
| 7 | let code = |
| 8 | " \ |
| 9 | /* "^name^" */ \ |
| 10 | let \ |
| 11 | type arrtype = array of int \ |
| 12 | var arr1:arrtype := \ |
| 13 | arrtype [10] of 0 \ |
| 14 | in \ |
| 15 | arr1 \ |
| 16 | end \ |
| 17 | " |
| 18 | in |
| 19 | let tokens = |
| 20 | let open Tiger.Parser in |
| 21 | [ LET; |
| 22 | TYPE; ID "arrtype"; EQ; ARRAY; OF; ID "int"; |
| 23 | VAR; ID "arr1"; COLON; ID "arrtype"; ASSIGN; |
| 24 | ID "arrtype"; LBRACK; INT 10; RBRACK; OF; INT 0; |
| 25 | IN; |
| 26 | ID "arr1"; |
| 27 | END |
| 28 | ] |
| 29 | in |
| 30 | (name, code, tokens) |
| 31 | |
| 32 | let test_02 = |
| 33 | let name = "arr1 is valid since expression 0 is int = myint" in |
| 34 | let code = |
| 35 | " \ |
| 36 | /* "^name^" */ \ |
| 37 | let \ |
| 38 | type myint = int \ |
| 39 | type arrtype = array of myint \ |
| 40 | var arr1:arrtype := \ |
| 41 | arrtype [10] of 0 \ |
| 42 | in \ |
| 43 | arr1 \ |
| 44 | end \ |
| 45 | " |
| 46 | in |
| 47 | let tokens = |
| 48 | let open Tiger.Parser in |
| 49 | [ LET; |
| 50 | TYPE; ID "myint"; EQ; ID "int"; |
| 51 | TYPE; ID "arrtype"; EQ; ARRAY; OF; ID "myint"; |
| 52 | VAR; ID "arr1"; COLON; ID "arrtype"; ASSIGN; |
| 53 | ID "arrtype"; LBRACK; INT 10; RBRACK; OF; INT 0; |
| 54 | IN; |
| 55 | ID "arr1"; |
| 56 | END |
| 57 | ] |
| 58 | in |
| 59 | (name, code, tokens) |
| 60 | |
| 61 | let test_03 = |
| 62 | let name = "a record type and a record variable" in |
| 63 | let code = |
| 64 | " \ |
| 65 | /* "^name^" */ \ |
| 66 | let \ |
| 67 | type rectype = \ |
| 68 | { name : string \ |
| 69 | , age : int \ |
| 70 | } \ |
| 71 | var rec1 : rectype := \ |
| 72 | rectype \ |
| 73 | { name = \"Nobody\" \ |
| 74 | , age = 1000 \ |
| 75 | } \ |
| 76 | in \ |
| 77 | rec1.name := \"Somebody\"; \ |
| 78 | rec1 \ |
| 79 | end \ |
| 80 | " |
| 81 | in |
| 82 | let tokens = |
| 83 | let open Tiger.Parser in |
| 84 | [ LET; |
| 85 | TYPE; ID "rectype"; EQ; |
| 86 | LBRACE; ID "name"; COLON; ID "string"; |
| 87 | COMMA; ID "age"; COLON; ID "int"; |
| 88 | RBRACE; |
| 89 | VAR; ID "rec1"; COLON; ID "rectype"; ASSIGN; |
| 90 | ID "rectype"; |
| 91 | LBRACE; ID "name"; EQ; STRING "Nobody"; |
| 92 | COMMA; ID "age"; EQ; INT 1000; |
| 93 | RBRACE; |
| 94 | IN; |
| 95 | ID "rec1"; DOT; ID "name"; ASSIGN; STRING "Somebody"; SEMICOLON; |
| 96 | ID "rec1"; |
| 97 | END |
| 98 | ] |
| 99 | in |
| 100 | (name, code, tokens) |
| 101 | |
| 102 | let test_04 = |
| 103 | let name = "define a recursive function" in |
| 104 | let code = |
| 105 | " \ |
| 106 | /* "^name^" */ \ |
| 107 | let \ |
| 108 | \ |
| 109 | /* calculate n! */ \ |
| 110 | function nfactor(n: int): int = \ |
| 111 | if n = 0 \ |
| 112 | then 1 \ |
| 113 | else n * nfactor(n-1) \ |
| 114 | \ |
| 115 | in \ |
| 116 | nfactor(10) \ |
| 117 | end \ |
| 118 | " |
| 119 | in |
| 120 | let tokens = |
| 121 | let open Tiger.Parser in |
| 122 | [ LET; |
| 123 | FUNCTION; ID "nfactor"; LPAREN; ID "n"; COLON; ID "int"; RPAREN; COLON; ID "int"; EQ; |
| 124 | IF; ID "n"; EQ; INT 0; |
| 125 | THEN; INT 1; |
| 126 | ELSE; ID "n"; TIMES; ID "nfactor"; LPAREN; ID "n"; MINUS; INT 1; RPAREN; |
| 127 | IN; |
| 128 | ID "nfactor"; LPAREN; INT 10; RPAREN; |
| 129 | END |
| 130 | ] |
| 131 | in |
| 132 | (name, code, tokens) |
| 133 | |
| 134 | let test_09 = |
| 135 | let name = "error : types of then - else differ" in |
| 136 | let code = |
| 137 | " \ |
| 138 | /* "^name^" */ \ |
| 139 | if (5>4) then 13 else \" \" \ |
| 140 | " |
| 141 | in |
| 142 | let tokens = |
| 143 | let open Tiger.Parser in |
| 144 | [ IF; LPAREN; INT 5; GT; INT 4; RPAREN; THEN; INT 13; ELSE; STRING " " |
| 145 | ] |
| 146 | in |
| 147 | (* TODO: Type error test case *) |
| 148 | (name, code, tokens) |
| 149 | |
| 150 | let tests = |
| 151 | [ test_01 |
| 152 | ; test_02 |
| 153 | ; test_03 |
| 154 | ; test_04 |
| 155 | ; test_09 |
| 156 | ] |
| 157 | |
| 158 | let () = |
| 159 | let tokens_of_code code = |
| 160 | let lexbuf = Lexing.from_string code in |
| 161 | let rec tokens () = |
| 162 | let token = Tiger.Lexer.token lexbuf in |
| 163 | (* Avoiding fragile pattern-matching *) |
| 164 | if token = Tiger.Parser.EOF then [] else token :: tokens () |
| 165 | in |
| 166 | tokens () |
| 167 | in |
| 168 | let parsetree_of_code code = |
| 169 | let lb = Lexing.from_string code in |
| 170 | (match Tiger.Parser.program Tiger.Lexer.token lb with |
| 171 | | exception Parsing.Parse_error -> |
| 172 | let module L = Lexing in |
| 173 | let L.({lex_curr_p = {pos_lnum=l; pos_bol=b; pos_cnum=c; _}; _}) = lb in |
| 174 | let msg = sprintf "Syntax error around line: %d, column: %d" l (c - b) in |
| 175 | Error msg |
| 176 | | parsetree -> |
| 177 | Ok parsetree |
| 178 | ) |
| 179 | in |
| 180 | let bar_sep = String.make 80 '-' in |
| 181 | let bar_end = String.make 80 '=' in |
| 182 | let indent n = String.make (2 * n) ' ' in |
| 183 | let color_on_green = "\027[0;32m" in |
| 184 | let color_on_red = "\027[1;31m" in |
| 185 | let color_off = "\027[0m" in |
| 186 | List.iteri tests ~f:(fun i (name, code, tokens_expected) -> |
| 187 | let i = i + 1 in (* Because iteri starts with 0 *) |
| 188 | printf "%s\n%sTest %d : %S\n" bar_sep (indent 0) i name; |
| 189 | |
| 190 | printf "%sLexing : " (indent 1); |
| 191 | let tokens_emitted = tokens_of_code code in |
| 192 | (try |
| 193 | assert (tokens_emitted = tokens_expected); |
| 194 | printf "%sOK%s\n" color_on_green color_off; |
| 195 | with Assert_failure _ -> |
| 196 | let tokens_to_string tokens = |
| 197 | String.concat "; " (List.map ~f:Tiger.Parser_token.to_string tokens) |
| 198 | in |
| 199 | printf |
| 200 | "%sERROR%s\n%sExpected: %s\n%sEmitted : %s\n\n" |
| 201 | color_on_red |
| 202 | color_off |
| 203 | (indent 2) |
| 204 | (tokens_to_string tokens_expected) |
| 205 | (indent 2) |
| 206 | (tokens_to_string tokens_emitted) |
| 207 | ); |
| 208 | |
| 209 | printf "%sParsing: " (indent 1); |
| 210 | (match parsetree_of_code code with |
| 211 | | Error errmsg -> printf "%sERROR:%s %s\n" color_on_red color_off errmsg |
| 212 | | Ok parsetree -> printf "%sOK:%s %s\n" color_on_green color_off parsetree |
| 213 | ); |
| 214 | |
| 215 | ); |
| 216 | print_endline bar_end; |