glm94/assm-test
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Wrote the very first part of the tree walking code, more just to make sure the logic is sound.

Browse Source
This commit is contained in:
glm94
2023-09-01 10:04:21 -05:00
parent b810d7803c
commit 21c2bf046e
1 changed files with 18 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/symbols_table.c
+16 -9
View File
@@ -119,6 +119,8 @@ void FreeSymbol(Symbol* symbol) {
free(symbol); free(symbol);
} }
int TryGetTokenNodeValue(const TokenNode* node, const SymbolTable* table, unsigned short* value);
int TryGetSymbolValue(const Symbol* symbol, const SymbolTable* table, unsigned short* value) { int TryGetSymbolValue(const Symbol* symbol, const SymbolTable* table, unsigned short* value) {
if (!symbol || !symbol->Token || !table) return 0; if (!symbol || !symbol->Token || !table) return 0;
if (symbol->Token->Class == CharacterClass) return 0; if (symbol->Token->Class == CharacterClass) return 0;
@@ -144,16 +146,10 @@ int TryGetSymbolValue(const Symbol* symbol, const SymbolTable* table, unsigned s
return 1; return 1;
case PunctuationClass: case PunctuationClass:
//check for math operator if (!TryGetTokenNodeValue(root->Left, table, &left)) return 0;
if (!TryGetSymbol(root->Left->Token->Lemexe, table, &s)) return 0; if (!TryGetTokenNodeValue(root->Right, table, &right)) return 0;
if (!TryGetSymbolValue(s, table, &left)) return 0; *value = left + right;
if (!TryGetSymbol(root->Right->Token->Lemexe, table, &s)) return 0;
if (!TryGetSymbolValue(s, table, &right)) return 0;
*value = left + right; //TODO: actually check what op we need to do.
break; break;
default: default:
return 0; return 0;
@@ -162,6 +158,17 @@ int TryGetSymbolValue(const Symbol* symbol, const SymbolTable* table, unsigned s
return 1; return 1;
} }
int TryGetTokenNodeValue(const TokenNode* node, const SymbolTable* table, unsigned short* value) {
const Token* token = node->Token;
if (token->Class == NumberClass) {
*value = token->Value.Number;
return 1;
}
return 0;
}
TokenNode* CreateTokenNode(const Token* token){ TokenNode* CreateTokenNode(const Token* token){
TokenNode* node = calloc(1, sizeof(TokenNode)); TokenNode* node = calloc(1, sizeof(TokenNode));