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| author | Kartik K. Agaram <vc@akkartik.com> | 2015-02-20 20:25:45 -0800 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2015-02-20 20:25:45 -0800 |
| commit | a4559f7287599a981a3b38a82b741f57d50e85c4 (patch) | |
| tree | 30e03f26c4559eadb8a5a715ec76b8f60c27dd4b /cpp/017and-record | |
| parent | eaa75c87c5b9ffb34ebd8c2ea0f1682dfcad336a (diff) | |
| download | mu-a4559f7287599a981a3b38a82b741f57d50e85c4.tar.gz | |
801
Diffstat (limited to 'cpp/017and-record')
| -rw-r--r-- | cpp/017and-record | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/cpp/017and-record b/cpp/017and-record index 94febae0..f38b031f 100644 --- a/cpp/017and-record +++ b/cpp/017and-record @@ -74,3 +74,42 @@ recipe main [ +mem: location 13 is 0 +run: product 0 is 0 +mem: storing in location 15 + +:(before "End Globals") +// To write to fields of records, you need their address. +const int GET_ADDRESS = 19; +:(before "End Primitive Recipe Numbers") +Recipe_number["get-address"] = GET_ADDRESS; +Next_recipe_number++; +:(before "End Primitive Recipe Implementations") +case GET_ADDRESS: { + trace("run") << "ingredient 0 is " << instructions[pc].ingredients[0].name; + int base_address = to_int(instructions[pc].ingredients[0].name); + trace("run") << "base address " << base_address; + int base_type = instructions[pc].ingredients[0].types[0]; + trace("run") << "base type is " << base_type; + trace("run") << "ingredient 1 is " << instructions[pc].ingredients[1].name; + assert(instructions[pc].ingredients[1].types.size() == 1); + assert(instructions[pc].ingredients[1].types[0] == 0); // must be literal + size_t offset = to_int(instructions[pc].ingredients[1].name); + int src = base_address+offset; + trace("run") << "address to copy is " << src; + vector<int> result; + result.push_back(src); + trace("run") << "product 0 is " << result[0]; + write_memory(instructions[pc].products[0], result); + break; +} + +:(scenario "get_address") +recipe main [ + 12:integer <- copy 34:literal + 13:boolean <- copy 0:literal + 15:integer <- get-address 12:integer-boolean, 1:offset +] ++run: instruction 2 ++run: ingredient 0 is 12 ++run: base address 12 ++run: ingredient 1 is 1 ++run: address to copy is 13 ++mem: storing in location 15 |