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37 commits

Author SHA1 Message Date
Evgeniy Stratonikov
9871dc8f5a compiler: update x/tools package 
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2022-01-20 13:21:26 +03:00
Evgeniy Stratonikov
b693d54282 compiler: count local variables on the go 
Create local variables as they are needed and remove `INITSLOT`
if there were no locals. This helps to eliminate a whole class
of bugs when calculated and real amount mismatched.
 2021-05-19 11:50:07 +03:00
Evgeniy Stratonikov
2aaaf30db7 compiler: remove finallyProcessIndex from funcScope 2021-05-19 09:54:10 +03:00
Roman Khimov
21a7f3d760 compiler: keep traversing after c.countLocalsCall() 
Some arguments can be inlined functions themselves thus requiring additional
attention. Otherwise we can get less local variables than really used by
STLOCs (and subsequent program crash).
 2021-04-05 22:58:07 +03:00
Evgeniy Stratonikov
0a4ff9d3e4 compiler: allow to use inlined functions to init globals 2021-02-25 15:12:16 +03:00
Evgeniy Stratonikov
f7b9861c11 compiler: count locals for vararg inline functions 2021-02-24 12:45:47 +03:00
Evgeniy Stratonikov
339187a56d compiler: count locals number properly 2021-02-15 18:48:33 +03:00
Evgeniy Stratonikov
1ae0d022dd compiler: support basic inlining 2021-02-15 18:48:33 +03:00
Evgenii Stratonikov
01ccaefe2f compiler: refactor void calls processing 
Call result is not used only if it occurs inside a `ExprStmt`.
Otherwise (`IfStmt`, `BinExpr`...) it is used.

Fix #1495.
 2020-10-19 10:43:47 +03:00
Anna Shaleva
f8d5c40928 compiler: do not DROP return value with type assertion 
The same problem as with IF. Example:

```
func foo() interface{} {
    ...
}

func Main() int{} {
   return foo().(int)    <--- panic here
}
```
 2020-10-13 19:14:44 +03:00
Anna Shaleva
dbce3c9a19 compiler: do not DROP unary expression value inside IF stmt 
We dropped values from such calls because they where marked as unused
(consequently, were followed by DROP instructions). Example:

if !foo() {    <--- panic here
    ...
}

This commit prevents the following runtime error during script execution:
```
"error encountered at instruction ** (NOT): runtime error: invalid memory address or nil pointer dereference"

```
 2020-10-13 19:14:44 +03:00
Evgenii Stratonikov
6701e8cda0 compiler: allow to use local variables in init() 
Because body of multiple `init()` functions constitute single
method in contract, we initialize slot with maximum amount of
locals encounterered in any of `init()` functions and clear them
before emitting body of each instance of `init()`.
 2020-10-06 19:08:32 +03:00
Evgenii Stratonikov
fd52dee79f compiler: process literals in analyzeVoidCalls 
Function call can occur in the slice or map literal
and its result surely isn't unused.
 2020-09-25 15:34:49 +03:00
Roman Khimov
18204ec21a
Merge pull request #1383 from nspcc-dev/compiler/switchtag 
compiler: fix a bug with type conversion in switch
 2020-09-03 14:40:17 +03:00
Anna Shaleva
058da7c2bd compiler: getFuncNameFromDecl for methods on pointers 
Declaration has *ast.StarExpr type in case of method on pointer.
 2020-09-02 22:41:54 +03:00
Evgenii Stratonikov
74dda0ac66 compiler: allow to use type conversion in range 2020-09-02 15:35:20 +03:00
Evgenii Stratonikov
7d61a567d5 compiler: fix a bug with type conversion in switch 
It was incorrectly parsed as void call.
 2020-09-02 14:48:19 +03:00
Evgenii Stratonikov
5d82b82efb compiler: support recover() 2020-08-27 10:28:50 +03:00
Evgenii Stratonikov
fa1d1a8b00 compiler: support defer statement 
Compile `defer` statement to a TRY/ENDFINALLY opcode pair.
 2020-08-27 10:28:50 +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
e58616b975 compiler: drop unused call results 
Close #683.
 2020-08-24 19:34:51 +03:00
Evgenii Stratonikov
f70cb4f34a compiler: do not use voidCalls when calculating stack size 
This was probably a part of some earlier logic.
 2020-08-24 19:34:51 +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
1ee4acbdbc compiler: manage variables in a separate varScope struct 
Abstract var scope management from the funcScope.
 2020-06-30 10:31:51 +03:00
Evgenii Stratonikov
c57d4cfff2 compiler: count current amount of locals correctly 2020-06-26 20:05:10 +03:00
Evgenii Stratonikov
ed45ff98e3 compiler: process interop together with package 
Closes #913.
Provide package info in the funcScope to check if function is defined
insided an interop package. As a good side-effect bytecode for builtins from `util`
is no longer emitted.

Related #941.
 2020-06-09 12:41:33 +03:00
Evgenii Stratonikov
d0735257ce compiler: support range loops with value variables 
Closes #958.
 2020-05-20 14:14:29 +03:00
Evgenii Stratonikov
b4bad11699 compiler: count the number of variables correctly 2020-05-19 16:47:43 +03:00
Evgenii Stratonikov
0cb6dc47e4 vm: implement slot-related opcodes 
1. Slot is a new mechanism for storing variables during execution
which is more convenient than alt.stack. This commit implements
support for slot opcodes in both vm and compiler.
2. Remove old alt.stack opcodes.
3. Do not process globals at the start of every function, but instead
load them single time at main.
 2020-05-12 16:23:08 +03:00
Evgenii Stratonikov
75fb3af48f compiler: add basic support for function literals 
Implement basic support for function literals.
Nested function literals and variables from closure are not supported for now.
 2020-05-12 12:56:52 +03:00
Evgenii Stratonikov
b0a89e8a1a compiler: support named returns 2020-05-06 18:22:52 +03:00
Evgenii Stratonikov
770cff8b91 compiler: allow to use return with no arguments 2020-05-06 18:22:52 +03:00
Evgenii Stratonikov
457e7e006a compiler: support exporting method variables in debug info 2020-04-06 15:30:07 +03:00
Evgenii Stratonikov
00c40b58aa compiler: record basic debug info 
Save info about method's byte-code sections.
 2020-04-06 15:30:06 +03:00
Evgenii Stratonikov
a43c9b9246 compiler: calculate stack size more precisely 
When calculating number of local variables, only
defining assignments (i.e. via `:=`) must be taken into account.
 2020-04-01 17:36:19 +03:00
Evgenii Stratonikov
5e229d84d4 compiler: use uint16 for label numbers 
As noted in #687 this will make compiler a bit more predictable.
 2020-02-21 17:45:45 +03:00
Roman Khimov
852e6a335b compiler: move it up from vm 
It really deserves it, I think. Especially given that it doesn't have any
direct usage of `vm` package now.
 2019-12-03 18:23:46 +03:00
Renamed from pkg/vm/compiler/func_scope.go (Browse further)