Commit Graph

20 Commits

Author SHA1 Message Date
chainhelen
143cf6aebf pkg/proc: extend conversion about string for array/str
Extend `string()`
1.convert `byte/rune array`(not only `slice`) to string.
2.convert string to string(itself), just like `string(str)` in go language.
2018-10-15 09:27:39 -07:00
aarzilli
79a0e216ab proc: add iface.(data) syntax to access concrete value of an interface
With this syntax users do not need to type the concrete type of an
interface variable to access its contents. This also sidesteps the
problem where the serialization of a type by go/printer is different
from the one used for debug_info type names.

Updates #1328
2018-09-27 14:09:26 -07:00
aarzilli
51994aafd3 proc: evaluate var.method expressions
Evaluates var.method expressions into a variable holding the
corresponding method with the receiver variable as a child, in
preparation for extending CallFunction so that it can call methods.
2018-08-16 12:44:02 -07:00
aarzilli
12a3f8bb97 proc: change (*Variable).setValue for use in CallFunction
Changes (*Variable).setValue so that it can be used in CallFunction to
set up the argument frame for the function call, adding the ability to:
- nil nillable types
- set strings to the empty string
- copy from one structure to another (including strings and slices)
- convert any interface type to interface{}
- convert pointer shaped types (map, chan, pointers, and structs
  consisting of a single pointer field) to interface{}

This covers all cases where an assignment statement can be evaluated
without allocating memory or calling functions in the target process.
2018-08-15 10:29:16 -07:00
aarzilli
b9c4a1d68c proc: Short circuit evaluation of && and || like go does
Change evaluation of binary operators so that both && and || only
evaluate their second argument conditionally, like go does.
2018-04-13 15:34:03 -07:00
aarzilli
a708d00e78 proc/eval: strings of different length are never equal 2018-04-10 14:46:31 -07:00
aarzilli
844762a853 proc: support access to chan buffers
Replace the unsafe.Pointer type of the buf field of channels with the
appropriate array type, allow expressions accessing member field of the
channel struct.

Fixes #962
2017-11-20 12:03:35 -08:00
aarzilli
8f16b371d1 proc/eval: support more type casts
* string to []rune
* string to []byte
* []rune to string
* []byte to string
* any pointer to uintptr

The string, []rune, []byte conversion pairs aligns this to the go
language.
The pointer -> uintptr conversion pair is symmetric to the uintptr ->
pointer that we already have.

Also lets the user specify any size for byte array types instead of
just the ones already used by the program, this can be used to read
arbitrary memory.

Fixes #548, #867
2017-10-25 13:20:25 +02:00
aarzilli
25765063fc proc/variables: distinguish between nil and empty slices and maps
Fixes #959
2017-09-11 11:43:37 -07:00
Alessandro Arzilli
8276ba06cd proc/eval: fix interface equality with nil (#914)
Fixes #904
2017-07-07 11:08:36 -07:00
Alessandro Arzilli
d8bb8ed5bf proc/variables: fill Len field of maps when recursion limit is reached (#834)
If we don't fill the Len field there will be no way for the user to
distinguish maps we didn't load from empty maps.
2017-05-30 14:26:10 -07:00
Alessandro Arzilli
cf84483672 proc/variables: bugfix: parsing of maps with zero sized value type (#851)
Buckets of maps with zero sized value types (i.e. map[T]struct{}) have
zero length value arrays.
2017-05-26 11:36:28 -07:00
Alessandro Arzilli
fc0d40144a proc/variables: fix infinite recursion with pointer loop (#725)
loadValue didn't react correctly to pointer loops going through
slice -> interface{} -> slice or pointer -> interface{} -> pointer.
2017-02-09 16:26:38 -08:00
Alessandro Arzilli
d89d115ef9 proc/variables: support NaN/Inf float values (#706)
Unfortunately go/constant does not support NaN and Inf float values so
we need to store this information alongside.

Fixes #705
2017-01-20 14:22:36 -08:00
Alessandro Arzilli
6bff4d1970 proc/variables: extend sign of read negative integers. (#657)
Since we store all signed integers as int64 the sign bit should be
extended, otherwise we read negative integers as their 2-complement
value.
2016-11-02 14:32:48 -07:00
Alessandro Arzilli
54d3eab63a prettyprint: Print type of the elements of arrays of interface type (#591) 2016-10-21 22:14:43 -07:00
Alessandro Arzilli
a7a0cc75e1 proc: allow use of quoted type names in type casts (#434)
If we are unable to correctly guess how a type is serialized in
debug_info let the user specify it directly.

Workaround for #455
2016-04-24 16:14:42 -07:00
Alessandro Arzilli
473b66387c proc: Improvements to Variable printing (#444)
* service/api: Removed unused fields of service/api.Function

* proc/eval: Set return variable name to input expression

* all: fine-grained control of loadValue for better variable printing

Makes proc.(*Variable).loadValue loading parameters configurable
through one extra argument of type LoadConfig.
This interface is also exposed through the API so clients can control
how much of a variable delve should read.
2016-04-24 10:15:39 -07:00
aarzilli
6242c4388e _fixtures: Removed testvariables2 and testvariables4
Moved the code in testvariables2 and testvariables4 into
testvariables3, renamed testvariables3 into testvariables2
2016-02-18 12:16:31 -08:00
aarzilli
8de1a307ee Fix: track recurseLevel in readArray/readSlice
This fix helps avoid infinite recursion.
2015-08-09 20:37:47 -05:00