36 lines
899 B
Go
36 lines
899 B
Go
package core
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import (
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"git.akyoto.dev/cli/q/src/build/ast"
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"git.akyoto.dev/cli/q/src/build/errors"
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"git.akyoto.dev/cli/q/src/build/scope"
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"git.akyoto.dev/cli/q/src/build/token"
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)
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// CompileDefinition compiles a variable definition.
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func (f *Function) CompileDefinition(node *ast.Define) error {
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name := node.Name.Text(f.File.Bytes)
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if f.identifierExists(name) {
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return errors.New(&errors.VariableAlreadyExists{Name: name}, f.File, node.Name.Position)
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}
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uses := token.Count(f.Body, f.File.Bytes, token.Identifier, name) - 1
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if uses == 0 {
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return errors.New(&errors.UnusedVariable{Name: name}, f.File, node.Name.Position)
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}
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register := f.CurrentScope().MustFindFree(f.cpu.General)
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f.CurrentScope().Reserve(register)
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err := f.ExpressionToRegister(node.Value, register)
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f.AddVariable(&scope.Variable{
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Name: name,
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Register: register,
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Alive: uses,
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})
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return err
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}
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