Austin Sun / CSE131-PA4

Commit 5b307fe7379cb1e47d4df1f735b8c8a5fc5263f3

Authored by Austin Sun 2016-05-16 17:34:15 -0700

Exists in master

ummm not sure

Showing 2 changed files with 67 additions and 1 deletions Side-by-side Diff

ast.cc
ast.h

...	...	@@ -9,6 +9,7 @@
9	9	#include <string.h> // strdup
10	10	#include <stdio.h> // printf
11	11
	12	+
12	13	Node::Node(yyltype loc) {
13	14	location = new yyltype(loc);
14	15	parent = NULL;
...	...	@@ -45,5 +46,53 @@
45	46
46	47	void Identifier::PrintChildren(int indentLevel) {
47	48	printf("%s", name);
	49	+}
	50	+
	51	+/*------------------------------------------------------------------------------------
	52	+ * Symbol Table Information
	53	+ ----------------------------------------------------------------------------------/
	54	+SymbolTable symbols;
	55	+
	56	+pair<Decl,llvm::Value > findSymbol(string s) {
	57	+ for(int i = symbols.size() - 1; i >= 0; i--) {
	58	+ if(symbols[i].count(s) > 0) return symbols[i][s];
	59	+ }
	60	+ return make_pair<Decl,llvm::Value >(NULL,NULL);
	61	+}
	62	+
	63	+pair<Decl,llvm::Value > findSymbol(Decl* d) {
	64	+ string s(d->GetIdentifier()->GetName());
	65	+ return findSymbol(s);
	66	+}
	67	+
	68	+bool isInCurrentScope(string s) {
	69	+ if(symbols.size() == 0) return false;
	70	+ return symbols[symbols.size()-1].count(s);
	71	+}
	72	+
	73	+bool isInCurrentScope(Decl* d) {
	74	+ string s(d->GetIdentifier()->GetName());
	75	+ return isInCurrentScope(s);
	76	+}
	77	+
	78	+bool isInScope(string s) {
	79	+ pair<Decl,llvm::Value > tmp = findSymbol(s);
	80	+ return tmp.first != NULL;
	81	+}
	82	+
	83	+bool isInScope(Decl* d) {
	84	+ string s(d->GetIdentifier()->GetName());
	85	+ return isInScope(s);
	86	+}
	87	+
	88	+void pushScope() {
	89	+ symbols.push_back(map<string,pair<Decl,llvm::Value > >());
	90	+}
	91	+void popScope() {
	92	+ symbols.pop_back();
	93	+}
	94	+
	95	+void addToScope(string s, Decl* d, Type* t) {
	96	+ symbols[symbols.size()-1][s] = make_pair(d, t);
48	97	}

...	...	@@ -41,12 +41,16 @@
41	41	#include "irgen.h"
42	42	#include "location.h"
43	43	#include <iostream>
	44	+#include <vector>
	45	+#include <map>
	46	+#include <algorithm>
44	47
45	48	using namespace std;
46	49
47	50	class SymbolTable;
48	51	class MyStack;
49	52	class FnDecl;
	53	+class Decl;
50	54
51	55	class Node {
52	56	protected:
...	...	@@ -98,7 +102,20 @@
98	102	Error() : Node() {}
99	103	const char *GetPrintNameForNode() { return "Error"; }
100	104	};
101		-
	105	+/*------------------------------------------------------------------------------------
	106	+ * Symbol Table Information
	107	+ ----------------------------------------------------------------------------------/
	108	+typedef vector<map<string,pair<Decl,llvm::Value > > > SymbolTable;
	109	+pair<Decl,llvm::Value v> findSymbol(string s);
	110	+pair<Decl,llvm::Value v> findSymbol(Decl* d);
	111	+bool isInCurrentScope(string s);
	112	+bool isInCurrentScope(Decl* d);
	113	+bool isInScope(string s);
	114	+bool isInScope(Decl* d);
	115	+void pushScope();
	116	+void popScope();
	117	+void addToScope(string s, Decl* d, llvm::Value * v t);
	118	+extern SymbolTable symbols;
102	119
103	120
104	121	#endif