chore: add linters and some lint fixes (#8)

* chore: add linters and some lint fixes

Configure some golangci-lint linters to get the code quality right.
Apply the first fixes.

Next step will be to add github actions to run lint and tests in
github CI.

* chore: more lint, fixed comments and variable names. no semantic change.

* chore: add Makefile

This makefile is intended to be used as a local substitute to github
actions.

1 files changed, 1 insertions, 0 deletions

diff --git a/parser/symbol.go b/parser/symbol.go
index c8d89db..499e121 100644
--- a/parser/symbol.go
+++ b/parser/symbol.go
@@ -40,6 +40,7 @@ func symtype(s *symbol) *vm.Type {
 	return vm.TypeOf(s.value)
 }
 
+// AddSym add a new named value at memory position i in the parser symbol table.
 func (p *Parser) AddSym(i int, name string, v vm.Value) {
 	p.addSym(i, name, v, symValue, nil, false)
 }