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|
specify parsing:
- it parses empty streams:
e = yaml.parser ""
expect (e ().type).to_be "STREAM_START"
expect (e ().type).to_be "STREAM_END"
expect (e ()).to_be (nil)
expect (e ()).to_be (nil)
- it ignores comments: '
e = yaml.parser "# A comment\nnon-comment # trailing comment\n"
expect (e ().type).to_be "STREAM_START"
expect (e ().type).to_be "DOCUMENT_START"
expect (e ().value).to_be "non-comment"
expect (e ().type).to_be "DOCUMENT_END"'
- describe STREAM_START:
- before:
e = yaml.parser "# no BOM"
- it is the first event:
expect (e ().type).to_be "STREAM_START"
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 0, column = 0, index = 0}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 0, column = 0, index = 0}
- it uses UTF-8 by default:
expect (e ().encoding).to_be "UTF8"
- it recognizes UTF-16 BOM:
e = yaml.parser (BOM .. " BOM")
expect (e ().encoding).to_match "UTF16[BL]E"
- describe STREAM_END:
- before:
for t in yaml.parser "nothing to see" do ev = t end
- it is the last event:
expect (ev.type).to_be "STREAM_END"
- it reports event start marker:
expect (ev.start_mark).to_equal {line = 1, column = 0, index = 14}
- it reports event end marker:
expect (ev.end_mark).to_equal {line = 1, column = 0, index = 14}
- describe DOCUMENT_START:
- before:
e = consume (1, "---")
- it recognizes document start marker:
expect (filter (e (), "type", "implicit")).
to_equal {type = "DOCUMENT_START", implicit = false}
- it reports implicit document start:
e = consume (1, "foo")
expect (e ().implicit).to_be (true)
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 0, column = 0, index = 0}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 0, column = 3, index = 3}
- context parser directives:
- it can recognize document versions:
e = consume (1, "%YAML 1.1\n---")
expect (e ().version_directive).to_equal {major = 1, minor = 1}
- it can diagnose missing document start:
e = consume (1, "%YAML 1.1\n")
expect (e ()).to_error "expected <document start>"
- it can diagnose multiple versions:
e = consume (1, "%YAML 1.1\n%YAML 1.1\n---")
expect (e ()).to_error "duplicate %YAML directive"
- it can diagnose too-new versions:
e = consume (1, "%YAML 2.0\n---")
expect (e ()).to_error "incompatible YAML document"
- it warns of newer minor versions:
pending (github_issue "1")
e = consume (1, "%YAML 1.9\n---")
expect (e ()).
to_error "attempting parsing of newer minor document version"
- it can recognize primary tag handles:
e = consume (1, "%TAG ! tag:ben-kiki.org,2000:app/\n---")
expect (e ().tag_directives).
to_equal {{handle = "!", prefix = "tag:ben-kiki.org,2000:app/"}}
- it can recognize secondary tag handles:
e = consume (1, "%TAG !! tag:yaml.org,2002:\n---")
expect (e ().tag_directives).
to_equal {{handle = "!!", prefix = "tag:yaml.org,2002:"}}
- it can recognize named tag handles:
e = consume (1, "%TAG !o! tag:ben-kiki.org,2000:\n---")
expect (e ().tag_directives).
to_equal {{handle = "!o!", prefix = "tag:ben-kiki.org,2000:"}}
- it can concatenate multiple tag handles:
e = consume (1, "%TAG ! !\n" ..
"%TAG !! tag:yaml.org,2002:\n" ..
"%TAG !o! tag:ben-kiki.org,2000:\n" ..
"---")
expect (e ().tag_directives).to_contain.
all_of {{handle = "!", prefix = "!"},
{handle = "!!", prefix = "tag:yaml.org,2002:"},
{handle = "!o!", prefix = "tag:ben-kiki.org,2000:"}}
- it can diagnose missing document start:
e = consume (1, "%TAG ! !\n")
expect (e ()).to_error "expected <document start>"
- describe DOCUMENT_END:
- before:
e = consume (3, "foo\n...")
- it recognizes the document end marker:
expect (filter (e (), "type", "implicit")).
to_equal {type = "DOCUMENT_END", implicit = false}
- it reports an implicit document end marker:
e = consume (3, "foo\n")
expect (filter (e (), "type", "implicit")).
to_equal {type = "DOCUMENT_END", implicit = true}
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 1, column = 0, index = 4}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 1, column = 3, index = 7}
- describe ALIAS:
- before:
e = consume (10, "---\n" ..
"hr:\n" ..
"- Mark McGwire\n" ..
"- &SS Sammy Sosa\n" ..
"rbi:\n" ..
"- *SS\n" ..
"- Ken Griffey")
- it recognizes an alias event:
expect (filter (e (), "type", "anchor")).
to_equal {type = "ALIAS", anchor = "SS"}
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 5, column = 2, index = 47}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 5, column = 5, index = 50}
- describe SCALAR:
- before:
e = consume (6, "---\n" ..
"hr:\n" ..
"- Mark McGwire\n" ..
"- &SS Sammy Sosa\n" ..
"rbi:\n" ..
"- *SS\n" ..
"- Ken Griffey")
- it recognizes a scalar event:
expect (filter (e (), "type", "value")).
to_equal {type = "SCALAR", value = "Sammy Sosa"}
- it records anchors:
expect (e ().anchor).to_be "SS"
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 3, column = 2, index = 25}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 3, column = 16, index = 39}
- context with quoting style:
- context plain style:
- before:
e = consume (2, "---\n" ..
" Mark McGwire's\n" ..
" year was crippled\n" ..
" by a knee injury.\n")
- it ignores line-breaks and indentation:
expect (e ().value).
to_be "Mark McGwire's year was crippled by a knee injury."
- it recognizes implicit plain style:
e = consume (2, "---\n" ..
" Mark McGwire's\n" ..
" year was crippled\n" ..
" by a knee injury.\n")
expect (e ().plain_implicit).to_be (true)
- it recognizes explicit plain style:
e = consume (2, "|\n" ..
" Mark McGwire's\n" ..
" year was crippled\n" ..
" by a knee injury.\n")
expect (e ().plain_implicit).to_be (false)
- it recognizes implicit quoted style:
e = consume (2, "|\n" ..
" Mark McGwire's\n" ..
" year was crippled\n" ..
" by a knee injury.\n")
expect (e ().quoted_implicit).to_be (true)
- it recognizes explicit quoted style:
e = consume (2, "'\n" ..
" Mark McGwire's\n" ..
" year was crippled\n" ..
" by a knee injury.'\n")
expect (e ().plain_implicit).to_be (false)
- context folded style:
- it preserves blank lines and deeper indentation:
e = consume (2, ">\n" ..
" Sammy Sosa completed another\n" ..
" fine season with great stats.\n" ..
"\n" ..
" 63 Home Runs\n" ..
" 0.288 Batting Average\n" ..
"\n" ..
" What a year!\n")
expect (e ().value).
to_be ("Sammy Sosa completed another fine season with great stats.\n" ..
"\n" ..
" 63 Home Runs\n" ..
" 0.288 Batting Average\n" ..
"\n" ..
"What a year!\n")
- context literal style:
- it removes indentation but preserves all line-breaks:
e = consume (2, [[# ASCII Art]] .. "\n" ..
[[--- |]] .. "\n" ..
[[ \//||\/||]] .. "\n" ..
[[ // || ||__]] .. "\n")
expect (e ().value).
to_be ([[\//||\/||]] .. "\n" ..
[[// || ||__]] .. "\n")
- context single quoted style:
- it folds line breaks:
e = consume (2, [['This quoted scalar]] .. "\n" ..
[[ spans two lines.']])
expect (e ().value).
to_be "This quoted scalar spans two lines."
- it does not process escape sequences:
# Lua [[ quoting makes sure libyaml sees all the quotes.
e = consume (2, [['"Howdy!"\t\u263A']])
expect (e ().value).to_be [["Howdy!"\t\u263A]]
# Note that we have to single quote the Lua snippets to prevent
# libyaml from interpreting the bytes as the spec file is read, so
# that the raw strings get correctly passed to the Lua compiler.
- context double quoted style:
- it folds line breaks: '
e = consume (4, [[quoted: "This quoted scalar]] .. "\n" ..
[[ spans two lines\n"]])
expect (e ().value).
to_be "This quoted scalar spans two lines\n"'
- it recognizes unicode escape sequences: '
e = consume (4, [[unicode: "Sosa did fine.\u263A"]])
expect (e ().value).to_be "Sosa did fine.\226\152\186"'
- it recognizes control escape sequences: '
e = consume (4, [[control: "\b1998\t1999\t2000\n"]])
expect (e ().value).to_be "\b1998\t1999\t2000\n"'
- it recognizes hexadecimal escape sequences: '
e = consume (4, [[hexesc: "\x41\x42\x43 is ABC"]])
expect (e ().value).to_be "ABC is ABC"'
- context indentation determines scope: '
e = consume (4, "name: Mark McGwire\n" ..
"accomplishment: >\n" ..
" Mark set a major league\n" ..
" home run record in 1998.\n" ..
"stats: |\n" ..
" 65 Home Runs\n" ..
" 0.278 Batting Average\n")
expect (e ().value).to_be "Mark McGwire"
expect (e ().value).to_be "accomplishment"
expect (e ().value).
to_be "Mark set a major league home run record in 1998.\n"
expect (e ().value).to_be "stats"
expect (e ().value).to_be "65 Home Runs\n0.278 Batting Average\n"'
- context with tag:
- it recognizes local tags: '
e = consume (4, "application specific tag: !something |\n" ..
" The semantics of the tag\n" ..
" above may be different for\n" ..
" different documents.")
expect (e ().tag).to_be "!something"'
- it recognizes global tags: '
e = consume (4, "picture: !!binary |\n" ..
" R0lGODlhDAAMAIQAAP//9/X\n" ..
" 17unp5WZmZgAAAOfn515eXv\n" ..
" Pz7Y6OjuDg4J+fn5OTk6enp\n" ..
" 56enmleECcgggoBADs=")
expect (e ().tag).to_be "tag:yaml.org,2002:binary"'
- it resolves %TAG declarations: '
e = consume (5, "%TAG ! tag:clarkevans.com,2002:\n" ..
"---\n" ..
"shape:\n" ..
"- !circle\n" ..
" center: &ORIGIN {x: 73, y: 129}\n" ..
" radius: 7")
expect (e ().tag).to_be "tag:clarkevans.com,2002:circle"'
- describe SEQUENCE_START:
- before: '
e = consume (4, "fubar: &FOO\n" ..
" - foo\n" ..
" - bar\n")'
- it recognizes a sequence start event:
expect (e ().type).to_be "SEQUENCE_START"
- it records anchors:
expect (e ().anchor).to_be "FOO"
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 0, column = 7, index = 7}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 1, column = 2, index = 14}
- context with tag:
- it recognizes local tags: '
e = consume (2, "--- !something\n" ..
"- foo\n")
expect (filter (e (), "type", "tag")).
to_equal {type = "SEQUENCE_START", tag = "!something"}'
- it recognizes global tags: '
e = consume (2, "--- !!omap\n" ..
"- Mark McGwire: 65\n" ..
"- Sammy Sosa: 63\n" ..
"- Ken Griffy: 58\n")
expect (filter (e (), "type", "tag")).
to_equal {type = "SEQUENCE_START",
tag = "tag:yaml.org,2002:omap"}'
- it resolves %TAG declarations: '
e = consume (2, "%TAG ! tag:clarkevans.com,2002:\n" ..
"--- !shape\n" ..
"- !circle\n" ..
" center: &ORIGIN {x: 73, y: 129}\n" ..
" radius: 7\n")
expect (filter (e (), "type", "tag")).
to_equal {type = "SEQUENCE_START",
tag = "tag:clarkevans.com,2002:shape"}'
- context with style:
- it recognizes block style:
e = consume (2, "- first\n- second")
expect (filter (e (), "type", "style")).
to_equal {type = "SEQUENCE_START", style = "BLOCK"}
- it recognizes flow style:
e = consume (2, "[first, second]")
expect (filter (e (), "type", "style")).
to_equal {type = "SEQUENCE_START", style = "FLOW"}
- describe SEQUENCE_END:
- before:
e = consume (5, "- foo\n- bar\n")
- it recognizes a sequence end event:
expect (e ().type).to_equal "SEQUENCE_END"
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 2, column = 0, index = 12}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 2, column = 0, index = 12}
- describe MAPPING_START:
- before: 'e = consume (3, "- &FUBAR\n foo: bar\n")'
- it recognizes a mapping start event:
expect (e ().type).to_be "MAPPING_START"
- it records anchors:
expect (e ().anchor).to_be "FUBAR"
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 0, column = 2, index = 2}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 1, column = 2, index = 11}
- context with tag:
- it recognizes local tags: '
e = consume (2, "--- !something\nfoo: bar\n")
expect (filter (e (), "type", "tag")).
to_equal {type = "MAPPING_START", tag = "!something"}'
- it recognizes global tags: '
e = consume (2, "--- !!set\n" ..
"? Mark McGwire\n" ..
"? Sammy Sosa\n" ..
"? Ken Griffy\n")
expect (filter (e (), "type", "tag")).
to_equal {type = "MAPPING_START",
tag = "tag:yaml.org,2002:set"}'
- it resolves %TAG declarations: '
e = consume (3, "%TAG ! tag:clarkevans.com,2002:\n" ..
"--- !shape\n" ..
"- !circle\n" ..
" center: &ORIGIN {x: 73, y: 129}\n" ..
" radius: 7\n")
expect (filter (e (), "type", "tag")).
to_equal {type = "MAPPING_START",
tag = "tag:clarkevans.com,2002:circle"}'
- context with style:
- it recognizes block style: '
e = consume (2, "foo: bar\nbaz:\n quux")
expect (filter (e (), "type", "style")).
to_equal {type = "MAPPING_START", style = "BLOCK"}'
- it recognizes flow style: '
e = consume (2, "{foo: bar, baz: quux}")
expect (filter (e (), "type", "style")).
to_equal {type = "MAPPING_START", style = "FLOW"}'
- describe MAPPING_END:
- before: 'e = consume (5, "foo: bar\n")'
- it recognizes the mapping end event:
expect (e ().type).to_equal "MAPPING_END"
- it reports event start marker:
expect (e ().start_mark).to_equal {line = 1, column = 0, index = 9}
- it reports event end marker:
expect (e ().end_mark).to_equal {line = 1, column = 0, index = 9}
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