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Implemented an abstract syntax tree

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This commit is contained in:
Eduard Urbach 2024-06-30 22:54:59 +02:00
parent 3b29d4cdee
commit 8453273d73
Signed by: eduard
GPG key ID: 49226B848C78F6C8
28 changed files with 422 additions and 315 deletions
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17
src/build/VariableDefinition.go
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@ -1,6 +1,7 @@
package build
import (
"git.akyoto.dev/cli/q/src/build/ast"
"git.akyoto.dev/cli/q/src/build/config"
"git.akyoto.dev/cli/q/src/build/expression"
"git.akyoto.dev/cli/q/src/build/token"
@ -8,24 +9,20 @@ import (
)
// CompileVariableDefinition compiles a variable definition.
func (f *Function) CompileVariableDefinition(expr *expression.Expression) error {
if len(expr.Children) < 2 {
return errors.New(errors.MissingAssignValue, f.File, expr.LastChild().Token.End())
}
name := expr.Children[0].Token.Text()
func (f *Function) CompileVariableDefinition(node *ast.Define) error {
name := node.Name.Text()
if f.identifierExists(name) {
return errors.New(&errors.VariableAlreadyExists{Name: name}, f.File, expr.Children[0].Token.Position)
return errors.New(&errors.VariableAlreadyExists{Name: name}, f.File, node.Name.Position)
}
uses := countIdentifier(f.Body, name) - 1
if uses == 0 {
return errors.New(&errors.UnusedVariable{Name: name}, f.File, expr.Children[0].Token.Position)
return errors.New(&errors.UnusedVariable{Name: name}, f.File, node.Name.Position)
}
value := expr.Children[1]
value := node.Value
err := value.EachLeaf(func(leaf *expression.Expression) error {
if leaf.Token.Kind == token.Identifier && !f.identifierExists(leaf.Token.Text()) {
@ -40,8 +37,6 @@ func (f *Function) CompileVariableDefinition(expr *expression.Expression) error
}
if uses == 1 {
expr.RemoveChild(value)
f.definitions[name] = &Definition{
Name: name,
Value: value,