factor/basis/peg/ebnf/ebnf-tests.factor

605 lines
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Factor

! Copyright (C) 2007 Chris Double.
! See http://factorcode.org/license.txt for BSD license.
!
USING: kernel tools.test peg peg.ebnf peg.ebnf.private words
math math.parser sequences accessors peg.parsers parser
namespaces arrays strings eval unicode multiline ;
IN: peg.ebnf.tests
{ T{ ebnf-non-terminal f "abc" } } [
"abc" non-terminal-parser parse
] unit-test
{ T{ ebnf-terminal f "55" } } [
"'55'" terminal-parser parse
] unit-test
{
T{ ebnf-rule f
"digit"
T{ ebnf-choice f
V{ T{ ebnf-terminal f "1" } T{ ebnf-terminal f "2" } }
}
}
} [
"digit = '1' | '2'" rule-parser parse
] unit-test
{
T{ ebnf-rule f
"digit"
T{ ebnf-sequence f
V{ T{ ebnf-terminal f "1" } T{ ebnf-terminal f "2" } }
}
}
} [
"digit = '1' '2'" rule-parser parse
] unit-test
{
T{ ebnf-choice f
V{
T{ ebnf-sequence f
V{ T{ ebnf-non-terminal f "one" } T{ ebnf-non-terminal f "two" } }
}
T{ ebnf-non-terminal f "three" }
}
}
} [
"one two | three" choice-parser parse
] unit-test
{
T{ ebnf-sequence f
V{
T{ ebnf-non-terminal f "one" }
T{ ebnf-whitespace f
T{ ebnf-choice f
V{ T{ ebnf-non-terminal f "two" } T{ ebnf-non-terminal f "three" } }
}
}
}
}
} [
"one {two | three}" choice-parser parse
] unit-test
{
T{ ebnf-sequence f
V{
T{ ebnf-non-terminal f "one" }
T{ ebnf-repeat0 f
T{ ebnf-sequence f
V{
T{ ebnf-choice f
V{ T{ ebnf-non-terminal f "two" } T{ ebnf-non-terminal f "three" } }
}
T{ ebnf-non-terminal f "four" }
}
}
}
}
}
} [
"one ((two | three) four)*" choice-parser parse
] unit-test
{
T{ ebnf-sequence f
V{
T{ ebnf-non-terminal f "one" }
T{ ebnf-ignore f
T{ ebnf-sequence f
V{
T{ ebnf-choice f
V{ T{ ebnf-non-terminal f "two" } T{ ebnf-non-terminal f "three" } }
}
T{ ebnf-non-terminal f "four" }
}
}
}
}
}
} [
"one ((two | three) four)~" choice-parser parse
] unit-test
{
T{ ebnf-sequence f
V{
T{ ebnf-non-terminal f "one" }
T{ ebnf-optional f T{ ebnf-non-terminal f "two" } }
T{ ebnf-non-terminal f "three" }
}
}
} [
"one ( two )? three" choice-parser parse
] unit-test
{ "foo" } [
"\"foo\"" identifier-parser parse
] unit-test
{ "foo" } [
"'foo'" identifier-parser parse
] unit-test
{ "\"" } [
"\"\\\"\"" identifier-parser parse
] unit-test
{ "\\" } [
"\"\\\\\"" identifier-parser parse
] unit-test
{ "AΣ𝄞" } [
"'\\x41\\u{greek-capital-letter-sigma}\\u01D11E'" identifier-parser parse
] unit-test
{ "foo" } [
"foo" non-terminal-parser parse symbol>>
] unit-test
{ "foo" } [
"foo]" non-terminal-parser parse symbol>>
] unit-test
{ V{ "a" "b" } } [
"ab" [EBNF foo='a' 'b' EBNF]
] unit-test
{ V{ 1 "b" } } [
"ab" [EBNF foo=('a')[[ drop 1 ]] 'b' EBNF]
] unit-test
{ V{ 1 2 } } [
"ab" [EBNF foo=('a') [[ drop 1 ]] ('b') [[ drop 2 ]] EBNF]
] unit-test
{ CHAR: A } [
"A" [EBNF foo=[A-Z] EBNF]
] unit-test
{ CHAR: Z } [
"Z" [EBNF foo=[A-Z] EBNF]
] unit-test
[
"0" [EBNF foo=[A-Z] EBNF]
] must-fail
{ CHAR: 0 } [
"0" [EBNF foo=[^A-Z] EBNF]
] unit-test
[
"A" [EBNF foo=[^A-Z] EBNF]
] must-fail
[
"Z" [EBNF foo=[^A-Z] EBNF]
] must-fail
{ V{ "1" "+" "foo" } } [
"1+1" [EBNF foo='1' '+' '1' [[ drop "foo" ]] EBNF]
] unit-test
{ "foo" } [
"1+1" [EBNF foo='1' '+' '1' => [[ drop "foo" ]] EBNF]
] unit-test
{ "foo" } [
"1+1" [EBNF foo='1' '+' '1' => [[ drop "foo" ]] | '1' '-' '1' => [[ drop "bar" ]] EBNF]
] unit-test
{ "bar" } [
"1-1" [EBNF foo='1' '+' '1' => [[ drop "foo" ]] | '1' '-' '1' => [[ drop "bar" ]] EBNF]
] unit-test
{ 6 } [
"4+2" [EBNF num=[0-9] => [[ digit> ]] foo=num:x '+' num:y => [[ x y + ]] EBNF]
] unit-test
{ 6 } [
"4+2" [EBNF foo=[0-9]:x '+' [0-9]:y => [[ x digit> y digit> + ]] EBNF]
] unit-test
{ 10 } [
{ 1 2 3 4 } [EBNF num=. ?[ number? ]? list=list:x num:y => [[ x y + ]] | num EBNF]
] unit-test
[
{ "a" 2 3 4 } [EBNF num=. ?[ number? ]? list=list:x num:y => [[ x y + ]] | num EBNF]
] must-fail
{ 3 } [
{ 1 2 "a" 4 } [EBNF num=. ?[ number? ]? list=list:x num:y => [[ x y + ]] | num EBNF]
] unit-test
[
"ab" [EBNF -=" " | "\t" | "\n" foo="a" - "b" EBNF]
] must-fail
{ V{ "a" " " "b" } } [
"a b" [EBNF -=" " | "\t" | "\n" foo="a" - "b" EBNF]
] unit-test
{ V{ "a" "\t" "b" } } [
"a\tb" [EBNF -=" " | "\t" | "\n" foo="a" - "b" EBNF]
] unit-test
{ V{ "a" "\n" "b" } } [
"a\nb" [EBNF -=" " | "\t" | "\n" foo="a" - "b" EBNF]
] unit-test
{ V{ "a" f "b" } } [
"ab" [EBNF -=" " | "\t" | "\n" foo="a" (-)? "b" EBNF]
] unit-test
{ V{ "a" " " "b" } } [
"a b" [EBNF -=" " | "\t" | "\n" foo="a" (-)? "b" EBNF]
] unit-test
{ V{ "a" "\t" "b" } } [
"a\tb" [EBNF -=" " | "\t" | "\n" foo="a" (-)? "b" EBNF]
] unit-test
{ V{ "a" "\n" "b" } } [
"a\nb" [EBNF -=" " | "\t" | "\n" foo="a" (-)? "b" EBNF]
] unit-test
{ V{ "a" "b" } } [
"ab" [EBNF -=(" " | "\t" | "\n")? => [[ drop ignore ]] foo="a" - "b" EBNF]
] unit-test
{ V{ "a" "b" } } [
"a\tb" [EBNF -=(" " | "\t" | "\n")? => [[ drop ignore ]] foo="a" - "b" EBNF]
] unit-test
{ V{ "a" "b" } } [
"a\nb" [EBNF -=(" " | "\t" | "\n")? => [[ drop ignore ]] foo="a" - "b" EBNF]
] unit-test
[
"axb" [EBNF -=(" " | "\t" | "\n")? => [[ drop ignore ]] foo="a" - "b" EBNF]
] must-fail
{ V{ V{ 49 } "+" V{ 49 } } } [
! Test direct left recursion.
! Using packrat, so first part of expr fails, causing 2nd choice to be used
"1+1" [EBNF num=([0-9])+ expr=expr "+" num | num EBNF]
] unit-test
{ V{ V{ V{ 49 } "+" V{ 49 } } "+" V{ 49 } } } [
! Test direct left recursion.
! Using packrat, so first part of expr fails, causing 2nd choice to be used
"1+1+1" [EBNF num=([0-9])+ expr=expr "+" num | num EBNF]
] unit-test
{ V{ V{ V{ 49 } "+" V{ 49 } } "+" V{ 49 } } } [
! Test indirect left recursion.
! Using packrat, so first part of expr fails, causing 2nd choice to be used
"1+1+1" [EBNF num=([0-9])+ x=expr expr=x "+" num | num EBNF]
] unit-test
{ t } [
"abcd='9' | ('8'):x => [[ x ]]" ebnf-parser (parse) remaining>> empty?
] unit-test
EBNF: primary
Primary = PrimaryNoNewArray
PrimaryNoNewArray = ClassInstanceCreationExpression
| MethodInvocation
| FieldAccess
| ArrayAccess
| "this"
ClassInstanceCreationExpression = "new" ClassOrInterfaceType "(" ")"
| Primary "." "new" Identifier "(" ")"
MethodInvocation = Primary "." MethodName "(" ")"
| MethodName "(" ")"
FieldAccess = Primary "." Identifier
| "super" "." Identifier
ArrayAccess = Primary "[" Expression "]"
| ExpressionName "[" Expression "]"
ClassOrInterfaceType = ClassName | InterfaceTypeName
ClassName = "C" | "D"
InterfaceTypeName = "I" | "J"
Identifier = "x" | "y" | ClassOrInterfaceType
MethodName = "m" | "n"
ExpressionName = Identifier
Expression = "i" | "j"
main = Primary
;EBNF
{ "this" } [
"this" primary
] unit-test
{ V{ "this" "." "x" } } [
"this.x" primary
] unit-test
{ V{ V{ "this" "." "x" } "." "y" } } [
"this.x.y" primary
] unit-test
{ V{ V{ "this" "." "x" } "." "m" "(" ")" } } [
"this.x.m()" primary
] unit-test
{ V{ V{ V{ "x" "[" "i" "]" } "[" "j" "]" } "." "y" } } [
"x[i][j].y" primary
] unit-test
{ V{ V{ "a" "b" } "c" } } [
"abc" [EBNF a="a" "b" foo=(a "c") EBNF]
] unit-test
{ V{ "a" "c" } } [
"abc" [EBNF a="a" "b"~ foo=(a "c") EBNF]
] unit-test
{ V{ V{ "a" V{ "b" "b" } } "c" } } [
"abbc" [EBNF a=("a" "b"*) foo=(a "c") EBNF]
] unit-test
{ V{ "a" "c" } } [
"abc" [EBNF a=("a" ("b")~) foo=(a "c") EBNF]
] unit-test
{ V{ "a" "c" } } [
"abc" [EBNF a=("a" "b"~) foo=(a "c") EBNF]
] unit-test
{ "c" } [
"abc" [EBNF a=("a" "b")~ foo=(a "c") EBNF]
] unit-test
{ V{ V{ "a" "b" } "c" } } [
"abc" [EBNF a="a" "b" foo={a "c"} EBNF]
] unit-test
{ V{ V{ "a" "b" } "c" } } [
"abc" [EBNF a="a" "b" foo=a "c" EBNF]
] unit-test
[
"a bc" [EBNF a="a" "b" foo=(a "c") EBNF]
] must-fail
[
"a bc" [EBNF a="a" "b" foo=a "c" EBNF]
] must-fail
[
"a bc" [EBNF a="a" "b" foo={a "c"} EBNF]
] must-fail
[
"ab c" [EBNF a="a" "b" foo=a "c" EBNF]
] must-fail
{ V{ V{ "a" "b" } "c" } } [
"ab c" [EBNF a="a" "b" foo={a "c"} EBNF]
] unit-test
[
"ab c" [EBNF a="a" "b" foo=(a "c") EBNF]
] must-fail
[
"a b c" [EBNF a="a" "b" foo=a "c" EBNF]
] must-fail
[
"a b c" [EBNF a="a" "b" foo=(a "c") EBNF]
] must-fail
[
"a b c" [EBNF a="a" "b" foo={a "c"} EBNF]
] must-fail
{ V{ V{ V{ "a" "b" } "c" } V{ V{ "a" "b" } "c" } } } [
"ab cab c" [EBNF a="a" "b" foo={a "c"}* EBNF]
] unit-test
{ V{ } } [
"ab cab c" [EBNF a="a" "b" foo=(a "c")* EBNF]
] unit-test
{ V{ V{ V{ "a" "b" } "c" } V{ V{ "a" "b" } "c" } } } [
"ab c ab c" [EBNF a="a" "b" foo={a "c"}* EBNF]
] unit-test
{ V{ V{ "a" "c" } V{ "a" "c" } } } [
"ab c ab c" [EBNF a="a" "b"~ foo={a "c"}* EBNF]
] unit-test
{ V{ } } [
"ab c ab c" [EBNF a="a" "b" foo=(a "c")* EBNF]
] unit-test
{ V{ } } [
"ab c ab c" [EBNF a="a" "b" foo=(a "c")* EBNF]
] unit-test
{ V{ "a" "a" "a" } } [
"aaa" [EBNF a=('a')* b=!('b') a:x => [[ x ]] EBNF]
] unit-test
{ t } [
"aaa" [EBNF a=('a')* b=!('b') a:x => [[ x ]] EBNF]
"aaa" [EBNF a=('a')* b=!('b') (a):x => [[ x ]] EBNF] =
] unit-test
{ V{ "a" "a" "a" } } [
"aaa" [EBNF a=('a')* b=a:x => [[ x ]] EBNF]
] unit-test
{ t } [
"aaa" [EBNF a=('a')* b=a:x => [[ x ]] EBNF]
"aaa" [EBNF a=('a')* b=(a):x => [[ x ]] EBNF] =
] unit-test
{ t } [
"number=(digit)+:n 'a'" ebnf-parser (parse) remaining>> length zero?
] unit-test
{ t } [
"number=(digit)+ 'a'" ebnf-parser (parse) remaining>> length zero?
] unit-test
{ t } [
"number=digit+ 'a'" ebnf-parser (parse) remaining>> length zero?
] unit-test
{ t } [
"number=digit+:n 'a'" ebnf-parser (parse) remaining>> length zero?
] unit-test
{ t } [
"foo=(name):n !(keyword) => [[ n ]]" rule-parser parse
"foo=name:n !(keyword) => [[ n ]]" rule-parser parse =
] unit-test
{ t } [
"foo=!(keyword) (name):n => [[ n ]]" rule-parser parse
"foo=!(keyword) name:n => [[ n ]]" rule-parser parse =
] unit-test
<<
EBNF: parser1
foo='a'
;EBNF
>>
EBNF: parser2
foo=<foreign parser1 foo> 'b'
;EBNF
EBNF: parser3
foo=<foreign parser1> 'c'
;EBNF
EBNF: parser4
foo=<foreign any-char> 'd'
;EBNF
{ "a" } [
"a" parser1
] unit-test
{ V{ "a" "b" } } [
"ab" parser2
] unit-test
{ V{ "a" "c" } } [
"ac" parser3
] unit-test
{ V{ CHAR: a "d" } } [
"ad" parser4
] unit-test
{ } [
"USING: kernel peg.ebnf ; \"a\\n\" [EBNF foo='a' '\n' => [[ drop \"\n\" ]] EBNF] drop" eval( -- )
] unit-test
[
"USING: peg.ebnf ; <EBNF foo='a' foo='b' EBNF>" eval( -- ) drop
] must-fail
{ t } [
! Rule lookup occurs in a namespace. This causes an incorrect duplicate rule
! if a var in a namespace is set. This unit test is to remind me to fix this.
[ "fail" "foo" set "foo='a'" ebnf-parser parse transform drop t ] with-scope
] unit-test
! Tokenizer tests
{ V{ "a" CHAR: b } } [
"ab" [EBNF tokenizer=default foo="a" . EBNF]
] unit-test
TUPLE: ast-number value ;
EBNF: a-tokenizer
Letter = [a-zA-Z]
Digit = [0-9]
Digits = Digit+
SingleLineComment = "//" (!("\n") .)* "\n" => [[ ignore ]]
MultiLineComment = "/*" (!("*/") .)* "*/" => [[ ignore ]]
Space = " " | "\t" | "\r" | "\n" | SingleLineComment | MultiLineComment
Spaces = Space* => [[ ignore ]]
Number = Digits:ws '.' Digits:fs => [[ ws "." fs 3array "" concat-as string>number ast-number boa ]]
| Digits => [[ >string string>number ast-number boa ]]
Special = "(" | ")" | "{" | "}" | "[" | "]" | "," | ";"
| "?" | ":" | "!==" | "~=" | "===" | "==" | "=" | ">="
| ">" | "<=" | "<" | "++" | "+=" | "+" | "--" | "-="
| "-" | "*=" | "*" | "/=" | "/" | "%=" | "%" | "&&="
| "&&" | "||=" | "||" | "." | "!"
Tok = Spaces (Number | Special )
;EBNF
{ V{ CHAR: 1 T{ ast-number f 23 } ";" CHAR: x } } [
"123;x" [EBNF bar = .
tokenizer = <foreign a-tokenizer Tok> foo=.
tokenizer=default baz=.
main = bar foo foo baz
EBNF]
] unit-test
{ V{ CHAR: 5 "+" CHAR: 2 } } [
"5+2" [EBNF
space=(" " | "\n")
number=[0-9]
operator=("*" | "+")
spaces=space* => [[ ignore ]]
tokenizer=spaces (number | operator)
main= . . .
EBNF]
] unit-test
{ V{ CHAR: 5 "+" CHAR: 2 } } [
"5 + 2" [EBNF
space=(" " | "\n")
number=[0-9]
operator=("*" | "+")
spaces=space* => [[ ignore ]]
tokenizer=spaces (number | operator)
main= . . .
EBNF]
] unit-test
{ "++" } [
"++--" [EBNF tokenizer=("++" | "--") main="++" EBNF]
] unit-test
{ "\\" } [
"\\" [EBNF foo="\\" EBNF]
] unit-test
[ "USE: peg.ebnf [EBNF EBNF]" eval( -- ) ] must-fail
[ "USE: peg.ebnf [EBNF
lol = a
lol = b
EBNF]" eval( -- )
] [
error>> [ redefined-rule? ] [ name>> "lol" = ] bi and
] must-fail-with
{
{ "a" "a" }
} [
EBNF: foo Bar = "a":a1 "a":a2 => [[ a1 a2 2array ]] ;EBNF
"aa" foo
] unit-test
{
{ "a" "a" }
} [
EBNF: foo2 Bar = "a":a-1 "a":a-2 => [[ a-1 a-2 2array ]] ;EBNF
"aa" foo2
] unit-test