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