mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +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.
176 lines
3.6 KiB
Plaintext
176 lines
3.6 KiB
Plaintext
********** source program **********
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fn main () -> Int {
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var auto: t = 5;
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match (t) {
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case 5 =>
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return 0;
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case auto: _ =>
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return 1;
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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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********** type checking complete **********
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fn main () -> Int {
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var auto: t = 5;
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match (t) {
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case 5 =>
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return 0;
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case auto: _ =>
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return 1;
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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 = 5; ... <-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 = 5; ... --->
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{
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stack: main{var auto: t = 5;<-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 = 5; --->
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{
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stack: main{5<-1> :: var auto: t = 5;<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> :: var auto: t = 5;<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 var auto: t = 5;<1>(5,) --->
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{
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stack: main{auto: t<-1> :: var auto: t = 5;<1>(5,) :: 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 auto: t --->
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{
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stack: main{auto<-1> :: auto: t<0> :: var auto: t = 5;<1>(5,) :: 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 auto --->
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{
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stack: main{auto<-1> :: auto: t<0> :: var auto: t = 5;<1>(5,) :: 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 auto with auto: t<1>(auto,) --->
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{
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stack: main{auto: t<-1> :: var auto: t = 5;<1>(5,) :: 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 auto: t with var auto: t = 5;<2>(5,auto: t,) --->
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pattern_match(auto: t, 5)
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{
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stack: main{match (t) {...}<-1>} :: top{}
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heap: fun<main>, 5,
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env: t: 5, 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,
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env: t: 5, main: fun<main>,
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}
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--- step exp t --->
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{
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stack: main{5<-1> :: match (t) {...}<0>} :: top{}
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heap: fun<main>, 5,
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env: t: 5, main: fun<main>,
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}
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--- handle value 5 with match (t) {...}<1>(5,) --->
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{
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stack: main{5<-1> :: match (t) {...}<1>(5,)} :: top{}
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heap: fun<main>, 5,
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env: t: 5, 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> :: match (t) {...}<1>(5,)} :: top{}
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heap: fun<main>, 5,
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env: t: 5, main: fun<main>,
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}
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--- handle value 5 with match (t) {...}<2>(5,5,) --->
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pattern_match(5, 5)
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{
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stack: main{return 0;<-1> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5,
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env: t: 5, main: fun<main>,
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}
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--- step stmt return 0; --->
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{
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stack: main{0<-1> :: return 0;<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5,
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env: t: 5, main: fun<main>,
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}
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--- step exp 0 --->
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{
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stack: main{0<-1> :: return 0;<0> :: {
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...
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}
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<0>} :: top{}
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heap: fun<main>, 5,
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env: t: 5, main: fun<main>,
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}
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--- handle value 0 with return 0;<1>(0,) --->
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{
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stack: top{0<-1>}
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heap: fun<main>, 5,
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env: main: fun<main>,
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}
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result: 0
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