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SymbolTable stores function blocks

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uan
2026-02-04 09:06:21 +01:00
parent 52c92386d7
commit 7eb9e021dd
1 changed files with 20 additions and 13 deletions
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33
parser.v
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@@ -12,6 +12,7 @@ struct VarSymbolInfo {
struct FuncSymbolInfo { struct FuncSymbolInfo {
type string type string
block Block
} }
struct SymbolTable { struct SymbolTable {
@@ -21,19 +22,21 @@ mut:
} }
fn (mut s SymbolTable) define_var(name string, typ string) { fn (mut s SymbolTable) define_var(name string, typ string) {
$if debug { $if debug {
dump(s.variable_scopes.len) dump(s.variable_scopes.len)
} }
if s.variable_scopes.len == 0 { if s.variable_scopes.len == 0 {
parse_error('No scope available') parse_error('No scope available')
} }
if name in s.variable_scopes[s.variable_scopes.len-1] { if name in s.variable_scopes[s.variable_scopes.len-1] {
parse_error('Variable ${name} already defined in this scope') parse_error('Variable ${name} already defined in this scope')
} }
s.variable_scopes[s.variable_scopes.len-1][name] = VarSymbolInfo{type: typ} s.variable_scopes[s.variable_scopes.len-1][name] = VarSymbolInfo{
type: typ
}
} }
fn (mut s SymbolTable) lookup_var(name string) ?VarSymbolInfo { fn (mut s SymbolTable) lookup_var(name string) ?VarSymbolInfo {
@@ -49,8 +52,8 @@ fn (mut s SymbolTable) lookup_var(name string) ?VarSymbolInfo {
return none return none
} }
fn (mut s SymbolTable) define_func(name string, typ string) { fn (mut s SymbolTable) define_func(name string, typ string, block Block) {
s.functions[name] = FuncSymbolInfo{type: typ} s.functions[name] = FuncSymbolInfo{type: typ, block: block}
} }
fn (mut s SymbolTable) lookup_func(name string) ?FuncSymbolInfo { fn (mut s SymbolTable) lookup_func(name string) ?FuncSymbolInfo {
@@ -68,6 +71,7 @@ fn (mut s SymbolTable) is_in_global_scope() bool {
// ------------------------------------------- Expressions // ------------------------------------------- Expressions
type Expr = VoidExpr | BinaryExpr | IntegerLiteral | RealLiteral | BoolLiteral | Variable | TypeExpr | Function type Expr = VoidExpr | BinaryExpr | IntegerLiteral | RealLiteral | BoolLiteral | Variable | TypeExpr | Function
type LiteralExpr = IntegerLiteral | RealLiteral | BoolLiteral
struct VoidExpr {} struct VoidExpr {}
@@ -333,7 +337,7 @@ fn (mut p Parser) parse_func_decl() FuncDecl {
p.symbols.variable_scopes.delete_last() p.symbols.variable_scopes.delete_last()
p.symbols.define_func(name_tok.text, type_tok.text) p.symbols.define_func(name_tok.text, type_tok.text, block)
return FuncDecl { return FuncDecl {
name: name_tok.text name: name_tok.text
@@ -419,6 +423,9 @@ fn (mut p Parser) parse_program() []Stmt {
p.statements << p.parse_statement() p.statements << p.parse_statement()
} }
p.symbols.variable_scopes.delete_last() p.symbols.variable_scopes.delete_last()
$if debug {
dump(p.symbols.functions)
}
return p.statements return p.statements
} }