move to a direct byte code compiler (#8)

* 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

1 files changed, 0 insertions, 56 deletions

diff --git a/parser/kind.go b/parser/kind.go
deleted file mode 100644
index d004471..0000000
--- a/parser/kind.go
+++ /dev/null
@@ -1,56 +0,0 @@
-package parser
-
-import "fmt"
-
-// kind defines the AST node kind. Its name is the concatenation
-// of a category (Block, Decl, Expr, Op, Stmt) and an instance name.
-type Kind int
-
-const (
-	Undefined = Kind(iota)
-	BlockParen
-	BlockStmt
-	Comment
-	DeclFunc
-	ExprCall
-	Ident
-	LiteralNumber
-	LiteralString
-	OpAdd
-	OpAssign
-	OpDefine
-	OpDot
-	OpInferior
-	OpMultiply
-	OpSubtract
-	StmtIf
-	StmtReturn
-)
-
-var kindString = [...]string{
-	Undefined:     "Undefined",
-	BlockParen:    "BlockParen",
-	BlockStmt:     "BlockStmt",
-	Comment:       "Comment",
-	DeclFunc:      "DeclFunc",
-	ExprCall:      "ExprCall",
-	Ident:         "Ident",
-	LiteralString: "LiteralString",
-	LiteralNumber: "LiteralNumber",
-	OpAdd:         "OpAdd",
-	OpAssign:      "OpAssign",
-	OpDefine:      "OpDefine",
-	OpDot:         "OpDot",
-	OpInferior:    "OpInferior",
-	OpMultiply:    "OpMultiply",
-	OpSubtract:    "OpSubtract",
-	StmtIf:        "StmtIf",
-	StmtReturn:    "StmtReturn",
-}
-
-func (k Kind) String() string {
-	if int(k) < 0 || int(k) > len(kindString) {
-		return fmt.Sprintf("unknown kind %d", k)
-	}
-	return kindString[k]
-}