mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-28 16:04:52 +01:00
Jon Meow
6e5070de18
Notes versus what jsiek wrote:
- This adopts Bazel for building.
- System-local versions of bison/flex are used. I found https://github.com/jmillikin/rules_bison, but those print a lot of warnings (things like -Wsign-compare IIRC) which makes builds hard to read. Plus I think the underlying bison_cc_library rule didn't work, so this would really only get a hermetic bison/flex build (helpful, but didn't seem worth more time).
- I'm adding in a .bazeliskrc to push a somewhat more standard choice of bazel versions. I noticed I was getting unstable versions by default, possible Google-specific, but seemed good to include.
- The `-lpthread` kludge.
- Turn all of the examples into golden tests.
- Including adding a golden test rule.
- Fixed various style guide issues. For example:
- Fixing function names to be CamelCase instead of snake_case (https://google.github.io/styleguide/cppguide.html#Function_Names)
- Removed exception use (https://google.github.io/styleguide/cppguide.html#Exceptions)
- File name fixes (https://github.com/carbon-language/carbon-lang/blob/trunk/docs/project/cpp_style_guide.md#file-names)
- Dropped `using` of `std` names -- I believe this is preferred (maybe we should be explicit about this in the Carbon style guide)
- Switched `enum` uses to `enum class` for ease-of-identification.
- Spent some time breaking out files to hopefully be easier to read/edit pieces, and understand relations between structs.
- Added `code requires` to `syntax.ypp` to address include issues
Possibly other things -- but the fundamental structure is, I believe, unchanged. I put in the golden tests pretty early to ensure I wasn't mutating output/results.
319 lines
10 KiB
Plaintext
319 lines
10 KiB
Plaintext
********** source program **********
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fn main () -> Int {
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var auto: t = (0 = 5, 1 = 2);
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match (t) {
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case (0 = auto: a, 1 = auto: b) =>
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return ((a + b) - 7);
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}
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}
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********** type checking **********
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--- step exp Int --->
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--- step exp Int --->
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--- step exp auto --->
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--- step exp auto --->
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--- step exp auto --->
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********** type checking complete **********
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fn main () -> Int {
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var auto: t = (0 = 5, 1 = 2);
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match (t) {
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case (0 = auto: a, 1 = auto: b) =>
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return ((a + b) - 7);
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}
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}
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********** starting execution **********
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********** initializing globals **********
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--- step exp () --->
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********** calling main function **********
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{
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stack: top{main()<-1>}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- step exp main() --->
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{
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stack: top{main<-1> :: main()<0>}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- step exp main --->
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{
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stack: top{fun<main><-1> :: main()<0>}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- handle value fun<main> with main()<1>(fun<main>,) --->
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{
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stack: top{()<-1> :: main()<1>(fun<main>,)}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- step exp () --->
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{
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stack: top{()<-1> :: main()<1>(fun<main>,)}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- handle value () with main()<2>(fun<main>,(),) --->
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pattern_match((), ())
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{
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stack: main{var auto: t = (0 = 5, 1 = 2); ... <-1>} :: top{}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- step stmt var auto: t = (0 = 5, 1 = 2); ... --->
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{
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stack: main{var auto: t = (0 = 5, 1 = 2);<-1> :: match (t) {...}<-1>} :: top{}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- step stmt var auto: t = (0 = 5, 1 = 2); --->
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{
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stack: main{(0 = 5, 1 = 2)<-1> :: var auto: t = (0 = 5, 1 = 2);<0> :: match (t) {...}<-1>} :: top{}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- step exp (0 = 5, 1 = 2) --->
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{
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stack: main{5<-1> :: (0 = 5, 1 = 2)<0> :: var auto: t = (0 = 5, 1 = 2);<0> :: match (t) {...}<-1>} :: top{}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- step exp 5 --->
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{
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stack: main{5<-1> :: (0 = 5, 1 = 2)<0> :: var auto: t = (0 = 5, 1 = 2);<0> :: match (t) {...}<-1>} :: top{}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- handle value 5 with (0 = 5, 1 = 2)<1>(5,) --->
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{
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stack: main{2<-1> :: (0 = 5, 1 = 2)<1>(5,) :: var auto: t = (0 = 5, 1 = 2);<0> :: match (t) {...}<-1>} :: top{}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- step exp 2 --->
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{
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stack: main{2<-1> :: (0 = 5, 1 = 2)<1>(5,) :: var auto: t = (0 = 5, 1 = 2);<0> :: match (t) {...}<-1>} :: top{}
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heap: fun<main>,
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env: main: fun<main>,
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}
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--- handle value 2 with (0 = 5, 1 = 2)<2>(5,2,) --->
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{
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stack: main{(0 = 5@1, 1 = 2@2)<-1> :: var auto: t = (0 = 5, 1 = 2);<0> :: match (t) {...}<-1>} :: top{}
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heap: fun<main>, 5, 2,
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env: main: fun<main>,
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}
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--- handle value (0 = 5@1, 1 = 2@2) with var auto: t = (0 = 5, 1 = 2);<1>((0 = 5@1, 1 = 2@2),) --->
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{
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stack: main{auto: t<-1> :: var auto: t = (0 = 5, 1 = 2);<1>((0 = 5@1, 1 = 2@2),) :: match (t) {...}<-1>} :: top{}
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heap: fun<main>, 5, 2,
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env: main: fun<main>,
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}
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--- step exp auto: t --->
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{
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stack: main{auto<-1> :: auto: t<0> :: var auto: t = (0 = 5, 1 = 2);<1>((0 = 5@1, 1 = 2@2),) :: match (t) {...}<-1>} :: top{}
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heap: fun<main>, 5, 2,
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env: main: fun<main>,
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}
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--- step exp auto --->
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{
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stack: main{auto<-1> :: auto: t<0> :: var auto: t = (0 = 5, 1 = 2);<1>((0 = 5@1, 1 = 2@2),) :: match (t) {...}<-1>} :: top{}
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heap: fun<main>, 5, 2,
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env: main: fun<main>,
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}
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--- handle value auto with auto: t<1>(auto,) --->
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{
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stack: main{auto: t<-1> :: var auto: t = (0 = 5, 1 = 2);<1>((0 = 5@1, 1 = 2@2),) :: match (t) {...}<-1>} :: top{}
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heap: fun<main>, 5, 2,
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env: main: fun<main>,
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}
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--- handle value auto: t with var auto: t = (0 = 5, 1 = 2);<2>((0 = 5@1, 1 = 2@2),auto: t,) --->
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pattern_match(auto: t, (0 = 5@1, 1 = 2@2))
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{
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stack: main{match (t) {...}<-1>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step stmt match (t) {...} --->
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{
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stack: main{t<-1> :: match (t) {...}<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp t --->
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{
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stack: main{(0 = 5@3, 1 = 2@4)<-1> :: match (t) {...}<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value (0 = 5@3, 1 = 2@4) with match (t) {...}<1>((0 = 5@3, 1 = 2@4),) --->
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{
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stack: main{(0 = auto: a, 1 = auto: b)<-1> :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp (0 = auto: a, 1 = auto: b) --->
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{
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stack: main{auto: a<-1> :: (0 = auto: a, 1 = auto: b)<0> :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp auto: a --->
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{
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stack: main{auto<-1> :: auto: a<0> :: (0 = auto: a, 1 = auto: b)<0> :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp auto --->
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{
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stack: main{auto<-1> :: auto: a<0> :: (0 = auto: a, 1 = auto: b)<0> :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value auto with auto: a<1>(auto,) --->
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{
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stack: main{auto: a<-1> :: (0 = auto: a, 1 = auto: b)<0> :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value auto: a with (0 = auto: a, 1 = auto: b)<1>(auto: a,) --->
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{
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stack: main{auto: b<-1> :: (0 = auto: a, 1 = auto: b)<1>(auto: a,) :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp auto: b --->
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{
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stack: main{auto<-1> :: auto: b<0> :: (0 = auto: a, 1 = auto: b)<1>(auto: a,) :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp auto --->
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{
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stack: main{auto<-1> :: auto: b<0> :: (0 = auto: a, 1 = auto: b)<1>(auto: a,) :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value auto with auto: b<1>(auto,) --->
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{
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stack: main{auto: b<-1> :: (0 = auto: a, 1 = auto: b)<1>(auto: a,) :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4),
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value auto: b with (0 = auto: a, 1 = auto: b)<2>(auto: a,auto: b,) --->
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{
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stack: main{(0 = auto: a@6, 1 = auto: b@7)<-1> :: match (t) {...}<1>((0 = 5@3, 1 = 2@4),)} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b,
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env: t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value (0 = auto: a@6, 1 = auto: b@7) with match (t) {...}<2>((0 = 5@3, 1 = 2@4),(0 = auto: a@6, 1 = auto: b@7),) --->
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pattern_match((0 = auto: a@6, 1 = auto: b@7), (0 = 5@3, 1 = 2@4))
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pattern_match(auto: a, 5)
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pattern_match(auto: b, 2)
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{
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stack: main{return ((a + b) - 7);<-1> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step stmt return ((a + b) - 7); --->
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{
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stack: main{((a + b) - 7)<-1> :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp ((a + b) - 7) --->
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{
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stack: main{(a + b)<-1> :: ((a + b) - 7)<0> :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp (a + b) --->
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{
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stack: main{a<-1> :: (a + b)<0> :: ((a + b) - 7)<0> :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp a --->
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{
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stack: main{5<-1> :: (a + b)<0> :: ((a + b) - 7)<0> :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value 5 with (a + b)<1>(5,) --->
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{
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stack: main{b<-1> :: (a + b)<1>(5,) :: ((a + b) - 7)<0> :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp b --->
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{
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stack: main{2<-1> :: (a + b)<1>(5,) :: ((a + b) - 7)<0> :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value 2 with (a + b)<2>(5,2,) --->
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{
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stack: main{7<-1> :: ((a + b) - 7)<0> :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value 7 with ((a + b) - 7)<1>(7,) --->
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{
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stack: main{7<-1> :: ((a + b) - 7)<1>(7,) :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- step exp 7 --->
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{
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stack: main{7<-1> :: ((a + b) - 7)<1>(7,) :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value 7 with ((a + b) - 7)<2>(7,7,) --->
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{
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stack: main{0<-1> :: return ((a + b) - 7);<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, 5, 2,
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env: b: 2, a: 5, t: (0 = 5@3, 1 = 2@4), main: fun<main>,
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}
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--- handle value 0 with return ((a + b) - 7);<1>(0,) --->
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{
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stack: top{0<-1>}
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heap: fun<main>, 5, 2, 5, 2, (0 = 5@3, 1 = 2@4), auto: a, auto: b, !!5, !!2,
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env: main: fun<main>,
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}
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result: 0
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