Commit graph

23 commits

Author SHA1 Message Date
Anna Shaleva
7f613e63aa compiler: add test for #2661 2022-09-01 13:39:22 +03:00
Anna Shaleva
800321db06 compiler: rename named unused global vars to "_"
So that (*codegen).Visit is able to omit code generation for these
unused global vars. The most tricky part is to detect unused global
variables, it is done in several steps:
1. Collect the set of named used/unused global vars.
2. Collect the set of globally declared expressions that contain
function calls.
3. Pick up global vars from the set made at step 2.
4. Traverse used functions and puck up those global vars that are used
from these functions.
5. Rename all globals that are presented in the set made at step 1
but are not presented in the set made on step 3 or step 4.
2022-09-01 13:39:19 +03:00
Anna Shaleva
91b36657d6 compiler: do not emit code for unnamed unused variables
If variable is unnamed and does not contain function call then it's
treated as unused and code generation may be omitted for it
initialization/declaration.
2022-09-01 09:18:56 +03:00
Anna Shaleva
1dcbdb011a compiler: emit code for unnamed global var decls more careful
In case if global var is unnamed (and, as a consequence, unused) and
contains a function call inside its value specification, we need to emit
code for this var to be able to call the function as it can have
side-effects. See the example:
```
package foo

import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"

var A = f()

func Main() int {
   return 3
}

func f() int {
   runtime.Notify("Valuable notification", 1)
   return 2
}
```
2022-09-01 09:18:07 +03:00
Evgeniy Stratonikov
970769e5b2 compiler: allow to use _ in constants
When `_` is unused it can be omitted from constant values mapping.
Catched when compiling `netmap` contract from nspcc-dev/neofs-contract.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-01-20 13:52:58 +03:00
Evgeniy Stratonikov
8af9c870b1 compiler: remove CompileWithDebugInfo
It is a simple wrapper over `CompileWithOptions` which we don't really
need. Custom options can be specified explicitly instead of using some
random default. This default was introduced in 1578904da, however tests
written there use `CompileWithOptions` and all other tests
pass on that commit even without this default.

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2022-01-20 13:15:48 +03:00
Roman Khimov
299a7ea614 compiler: use CALLT for native contract calls, fix #2257 2021-12-10 11:58:50 +03:00
Evgenii Stratonikov
ec58bec803 compiler: fix global constant traversal
There can be no global variables, but some global constants.
Introduced in 0b44a430.
2020-12-10 13:45:10 +03:00
Evgenii Stratonikov
18369c489e compiler: do not allocate slotes for unused "_" vars 2020-09-06 15:27:46 +03:00
Evgenii Stratonikov
0b44a43043 compiler: do not allocate static slot for constants
Their value is known at compile time.
2020-09-06 15:20:17 +03:00
Evgenii Stratonikov
b18a7f200c compiler: calculate local variables properly
In case when right-hand side of an assignment is a function,
left-hand side should be used.
2020-08-27 10:28:50 +03:00
Evgenii Stratonikov
057e1c6e3c compiler: provide filename to Compile() 2020-08-11 11:10:45 +03:00
Evgenii Stratonikov
a781d299e0 compiler: use fully-qualified names for tracking functions
Function name now consists of 3 parts:
1) full package path
2) method receiver type (if any)
3) function name itself .

Fix #1150.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-31 12:07:06 +03:00
Evgenii Stratonikov
528c184f00 compiler: allow to use exported constants
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-31 12:06:42 +03:00
Evgenii Stratonikov
6df019913d compiler: allow to use exported variables
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-31 12:06:42 +03:00
Evgenii Stratonikov
7009417325 compiler: allow to declare global variables in multiple files
Traverse and count globals across all used files.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2020-07-31 12:06:42 +03:00
Evgenii Stratonikov
685d44dbc1 *: support _initialize method in contracts
Invoke `_initialize` method on every call if present.
In NEO3 there is no entrypoint and methods are invoked by offset,
thus `Main` function is no longer required.
We still have special `Main` method in tests to simplify them.
2020-07-27 13:00:35 +03:00
Evgenii Stratonikov
4f64bf86e5 compiler: add test for argument shadowing
Thanks @roman-khimov.
2020-06-30 10:41:48 +03:00
Evgenii Stratonikov
26cfae7c9a compiler: support shadowing via Block statements 2020-06-30 10:31:52 +03:00
Evgenii Stratonikov
40bacc6775 compiler: support variable shadowing
Closes #1131.
2020-06-30 10:31:52 +03:00
Evgenii Stratonikov
2cc58c3c9e compiler: allow to declare multiple compound types in a var decl 2020-05-19 16:57:02 +03:00
Evgenii Stratonikov
b4bad11699 compiler: count the number of variables correctly 2020-05-19 16:47:43 +03:00
Evgenii Stratonikov
e21015233b compiler: implement shadowing of global variables
Before introducing slots it was hard to change global variables
preserving changes across multiple function calls.
This commit implements such possibility.
Closes #638.
2020-05-12 16:23:09 +03:00