+open Printf
+
module List = ListLabels
-let test_01 =
+let test_case_from_book_01 =
let name = "an array type and an array variable" in
let code =
" \
"
in
let tokens =
- let open Tiger.Parser.Token in
+ let open Tiger.Parser in
[ LET;
TYPE; ID "arrtype"; EQ; ARRAY; OF; ID "int";
VAR; ID "arr1"; COLON; ID "arrtype"; ASSIGN;
in
(name, code, tokens)
-let test_02 =
+let test_case_from_book_02 =
let name = "arr1 is valid since expression 0 is int = myint" in
let code =
" \
"
in
let tokens =
- let open Tiger.Parser.Token in
+ let open Tiger.Parser in
[ LET;
TYPE; ID "myint"; EQ; ID "int";
TYPE; ID "arrtype"; EQ; ARRAY; OF; ID "myint";
in
(name, code, tokens)
-let test_03 =
+let test_case_from_book_03 =
let name = "a record type and a record variable" in
let code =
" \
"
in
let tokens =
- let open Tiger.Parser.Token in
+ let open Tiger.Parser in
[ LET;
TYPE; ID "rectype"; EQ;
LBRACE; ID "name"; COLON; ID "string";
in
(name, code, tokens)
-let test_04 =
+let test_case_from_book_04 =
let name = "define a recursive function" in
let code =
" \
"
in
let tokens =
- let open Tiger.Parser.Token in
+ let open Tiger.Parser in
[ LET;
FUNCTION; ID "nfactor"; LPAREN; ID "n"; COLON; ID "int"; RPAREN; COLON; ID "int"; EQ;
IF; ID "n"; EQ; INT 0;
in
(name, code, tokens)
-let tokens_of_code code =
- let lexbuf = Lexing.from_string code in
- let rec tokens () =
- match Tiger.Lexer.token lexbuf with
- | None -> []
- | Some token -> token :: tokens ()
+let test_case_from_book_09 =
+ let name = "error : types of then - else differ" in
+ let code =
+ " \
+ /* "^name^" */ \
+ if (5>4) then 13 else \" \" \
+ "
in
- tokens ()
+ let tokens =
+ let open Tiger.Parser in
+ [ IF; LPAREN; INT 5; GT; INT 4; RPAREN; THEN; INT 13; ELSE; STRING " "
+ ]
+ in
+ (* TODO: Type error test case *)
+ (name, code, tokens)
-let tests =
- [ test_01
- ; test_02
- ; test_03
- ; test_04
+(*
+let test_case_from_book_queens =
+ let code =
+ "\
+ /* A program to solve the 8-queens problem */ \n\
+ \n\
+ let \n\
+ var N := 8 \n\
+ \n\
+ type intArray = array of int \n\
+ \n\
+ var row := intArray [ N ] of 0 \n\
+ var col := intArray [ N ] of 0 \n\
+ var diag1 := intArray [N+N-1] of 0 \n\
+ var diag2 := intArray [N+N-1] of 0 \n\
+ \n\
+ function printboard() = ( \n\
+ for i := 0 to N-1 do ( \n\
+ for j := 0 to N-1 do print(if col[i]=j then \" O\" else \" .\"); \n\
+ print(\"\n\") \n\
+ ); \n\
+ print(\"\n\") \n\
+ ) \n\
+ \n\
+ function try(c:int) = ( \n\
+ /* for i:= 0 to c do print(\".\"); print(\"\n\"); flush();*/ \n\
+ if c=N \n\
+ then printboard() \n\
+ else \n\
+ for r := 0 to N-1 \n\
+ do \n\
+ if row[r]=0 & diag1[r+c]=0 & diag2[r+7-c]=0 \n\
+ then ( \n\
+ row[r] := 1; \n\
+ diag1[r+c] := 1; \n\
+ diag2[r+7-c] := 1; \n\
+ col[c] := r; \n\
+ try(c+1); \n\
+ row[r] := 0; \n\
+ diag1[r+c] := 0; \n\
+ diag2[r+7-c] := 0 \n\
+ ) \n\
+ ) \n\
+ in \n\
+ try(0) \n\
+ end \n\
+ "
+ in
+ (code, code, [])
+*)
+
+let test_cases_from_book =
+ [ test_case_from_book_01
+ ; test_case_from_book_02
+ ; test_case_from_book_03
+ ; test_case_from_book_04
+ ; test_case_from_book_09
+ (*; test_case_from_book_queens*)
+ ]
+
+let tests_micro_cases =
+ let open Tiger.Parser in
+ [ (
+ let code =
+ "nil"
+ in
+ let tokens =
+ [NIL]
+ in
+ (code, code, tokens)
+ )
+ ; (
+ let code =
+ "5"
+ in
+ let tokens =
+ [INT 5]
+ in
+ (code, code, tokens)
+ )
+ ; (
+ let code =
+ "-5"
+ in
+ let tokens =
+ [MINUS; INT 5]
+ in
+ (code, code, tokens)
+ )
+ ; (
+ let code =
+ "f()"
+ in
+ let tokens =
+ [ID "f"; LPAREN; RPAREN]
+ in
+ (code, code, tokens)
+ )
+ ; (
+ let code =
+ "f(\"a\", 3, foo)"
+ in
+ let tokens =
+ [ID "f"; LPAREN; STRING "a"; COMMA; INT 3; COMMA; ID "foo"; RPAREN]
+ in
+ (code, code, tokens)
+ )
+ ; (
+ let code =
+ "abc.i"
+ in
+ let tokens =
+ [ID "abc"; DOT; ID "i"]
+ in
+ (code, code, tokens)
+ )
+ ; (
+ let code =
+ "abc [5] of nil"
+ in
+ let tokens =
+ [ID "abc"; LBRACK; INT 5; RBRACK; OF; NIL]
+ in
+ (code, code, tokens)
+ )
+ ; (
+ let code =
+ "abc[0]"
+ in
+ let tokens =
+ [ID "abc"; LBRACK; INT 0; RBRACK]
+ in
+ (code, code, tokens)
+ )
+ ; (
+ let code =
+ "abc[0] := foo()"
+ in
+ let tokens =
+ [ID "abc"; LBRACK; INT 0; RBRACK; ASSIGN; ID "foo"; LPAREN; RPAREN]
+ in
+ (code, code, tokens)
+ )
]
+let tests =
+ test_cases_from_book @ tests_micro_cases
+
let () =
+ let tokens_of_code code =
+ let lexbuf = Lexing.from_string code in
+ let rec tokens () =
+ let token = Tiger.Lexer.token lexbuf in
+ (* Avoiding fragile pattern-matching *)
+ if token = Tiger.Parser.EOF then [] else token :: tokens ()
+ in
+ tokens ()
+ in
+ let parsetree_of_code code =
+ let lb = Lexing.from_string code in
+ (match Tiger.Parser.program Tiger.Lexer.token lb with
+ | exception Parsing.Parse_error ->
+ let module L = Lexing in
+ let L.({lex_curr_p = {pos_lnum=l; pos_bol=b; pos_cnum=c; _}; _}) = lb in
+ let msg = sprintf "Syntax error around line: %d, column: %d" l (c - b) in
+ Error msg
+ | absyn ->
+ Ok (Tiger.Absyn.to_string absyn)
+ )
+ in
let bar_sep = String.make 80 '-' in
let bar_end = String.make 80 '=' in
+ let indent n = String.make (2 * n) ' ' in
+ let color_on_green = "\027[0;32m" in
+ let color_on_red = "\027[1;31m" in
+ let color_off = "\027[0m" in
List.iteri tests ~f:(fun i (name, code, tokens_expected) ->
let i = i + 1 in (* Because iteri starts with 0 *)
- let open Printf in
- printf "%s\n Test %d : %S\n" bar_sep i name;
+ printf "%s\n%sTest %d : %S\n" bar_sep (indent 0) i name;
+
+ printf "%sLexing : " (indent 1);
let tokens_emitted = tokens_of_code code in
(try
assert (tokens_emitted = tokens_expected);
- print_endline " ---> OK";
+ printf "%sOK%s\n" color_on_green color_off;
with Assert_failure _ ->
let tokens_to_string tokens =
- String.concat "; " (List.map ~f:Tiger.Parser.Token.to_string tokens)
+ String.concat "; " (List.map ~f:Tiger.Parser_token.to_string tokens)
in
printf
- " ---> ERROR\n Expected: %s\n Emitted : %s\n\n"
+ "%sERROR%s\n%sExpected: %s\n%sEmitted : %s\n\n"
+ color_on_red
+ color_off
+ (indent 2)
(tokens_to_string tokens_expected)
+ (indent 2)
(tokens_to_string tokens_emitted)
);
+
+ printf "%sParsing: " (indent 1);
+ (match parsetree_of_code code with
+ | Error errmsg -> printf "%sERROR:%s %s\n" color_on_red color_off errmsg
+ | Ok parsetree -> printf "%sOK:%s %s\n" color_on_green color_off parsetree
+ );
+
);
print_endline bar_end;
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