35 lines
646 B
Go
35 lines
646 B
Go
package compiler
|
|
|
|
func (c *Compiler) currentInstructions() []byte {
|
|
return c.scopes[c.scopeIndex].instructions
|
|
}
|
|
|
|
func (c *Compiler) enterScope() {
|
|
scope := CompilationScope{
|
|
instructions: make([]byte, 0),
|
|
}
|
|
|
|
c.scopes = append(c.scopes, scope)
|
|
c.scopeIndex++
|
|
|
|
c.symbolTable = c.symbolTable.Fork(false)
|
|
|
|
if c.trace != nil {
|
|
c.printTrace("SCOPE", c.scopeIndex)
|
|
}
|
|
}
|
|
|
|
func (c *Compiler) leaveScope() []byte {
|
|
instructions := c.currentInstructions()
|
|
|
|
c.scopes = c.scopes[:len(c.scopes)-1]
|
|
c.scopeIndex--
|
|
|
|
c.symbolTable = c.symbolTable.Parent(true)
|
|
|
|
if c.trace != nil {
|
|
c.printTrace("SCOPL", c.scopeIndex)
|
|
}
|
|
|
|
return instructions
|
|
}
|