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Type and Value types in vm package are now used in place of reflect.Type
and reflect.Value. It allows to remove the dependency on reflect for
parser and compiler packages.
The main purpose of Type is to provide a solution to implement recursive
structs, named types, interfaces and methods, despite the limitations of
Go reflect. The goal is to provide the thinnest layer around reflect.
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A 'New' instruction is added in VM to manage initialisation
of typed variables in the stack. The instantiated type symbols
are now added to global data. Accessing and setting values by
address is now working.
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This is incomplete because the scalar variables are not addressable
right now. To be addressable they must be represented as reflect
values, not interfaces.
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The structures are reresented by reflect values. New instructions
`Field` and `Vassign` have been added to the VM to assign reflect
values and access struct fields.
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Recursive structs and embedded structs are not supported yet.
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The parsing logic for type declarations is there. Note that no
tokens are produced, only symbols. The different type kinds will
be added next.
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The full Go syntax is supported, blocks or line,
mutiple comma separated variables, assignments.
In local and global frame.
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* chore: refactor to keep only the new parser and bytecode vm
* scanner: remove Token.value field
* scanner: remove scanner.kind field
* chore: move language specification in lang package
This avoid a cyclic dependency in scanner_test which can now use
the golang/GoSpec language specification for Go.
* clean code
* scanner: export scanner fields
Also parser now generate function calls, including externals.
* chore: fix lint issues
* parser: handle strings
* wip
* parser: implement support for 'if, else, else if' statements
Resolving labels in the compiler still in progress.
* parser: support if statements, improve compiler
* improve handling of functions
* improve support of local variables
* scanner: trim leading and trailing spaces
* fixes to make fibonacci work
* parser: improve README, fix function parameters parsing
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