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Fix global declaration error in the function

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Fix Global symbol to prevent syntax error
when global declaration for same variable in function.

Fixes #1353
This commit is contained in:
HyeockJinKim 2019-09-18 01:33:31 +09:00
parent bff58fd626
commit 18c243854e
1 changed files with 11 additions and 4 deletions
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15
src/symboltable.rs
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@ -746,10 +746,15 @@ impl SymbolTableBuilder {
// Role already set..
match role {
SymbolUsage::Global => {
return Err(SymbolTableError {
error: format!("name '{}' is used prior to global declaration", name),
location,
})
let symbol = table.symbols.get(name).unwrap();
if let SymbolScope::Global = symbol.scope {
// Ok
} else {
return Err(SymbolTableError {
error: format!("name '{}' is used prior to global declaration", name),
location,
});
}
}
SymbolUsage::Nonlocal => {
return Err(SymbolTableError {
@ -806,6 +811,8 @@ impl SymbolTableBuilder {
SymbolUsage::Global => {
if let SymbolScope::Unknown = symbol.scope {
symbol.scope = SymbolScope::Global;
} else if let SymbolScope::Global = symbol.scope {
// Global scope can be set to global
} else {
return Err(SymbolTableError {
error: format!("Symbol {} scope cannot be set to global, since its scope was already determined otherwise.", name),