From 50c749450849362f079a13ba9e2efd35f8bae7ed Mon Sep 17 00:00:00 2001
From: "zik.saleeba" <zik.saleeba@21eae674-98b7-11dd-bd71-f92a316d2d60>
Date: Thu, 16 Oct 2008 07:04:23 +0000
Subject: [PATCH] Starting the parser

git-svn-id: http://picoc.googlecode.com/svn/trunk@8 21eae674-98b7-11dd-bd71-f92a316d2d60
---
 lex.c   |  9 +++++++--
 parse.c | 32 +++++++++++++++++++++++++++++++-
 2 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/lex.c b/lex.c
index b3e0ed4..d89c6f5 100644
--- a/lex.c
+++ b/lex.c
@@ -20,14 +20,19 @@ struct ReservedWord
 
 static struct ReservedWord ReservedWords[] =
 {
+    { "break", TokenBreak },
+    { "case", TokenCase },
     { "char", TokenCharType },
+    { "default", TokenDefault },
     { "do", TokenDo },
     { "else", TokenElse },
     { "for", TokenFor },
     { "if", TokenIf },
     { "int", TokenIntType },
-    { "while", TokenWhile },
-    { "void", TokenVoidType }
+    { "return", TokenReturn },
+    { "switch", TokenSwitch },
+    { "void", TokenVoidType },
+    { "while", TokenWhile }
 };
 
 void LexInit(struct LexState *Lexer, const Str *Source, const Str *FileName, int Line)
diff --git a/parse.c b/parse.c
index 9832124..2ac5a50 100644
--- a/parse.c
+++ b/parse.c
@@ -13,6 +13,37 @@ void ParseInit()
     TableInit(&GlobalTable, &GlobalHashTable[0], "global", GLOBAL_TABLE_SIZE);
 }
 
+/* parse and run some code */
+void ParseRun(const Str *FileName, const Str *Source, int LineNo)
+{
+    enum LexToken Token;
+    struct LexState Lexer;
+    int ParseDepth = 0;
+    int IntValue;
+    
+    LexInit(&Lexer, Source, FileName, 1);
+    
+    while ( (Token = LexGetToken(&Lexer)) != TokenEOF)
+    {
+        /* do parsey things here */
+        StrPrintf("token %d\n", (int)Token);
+        
+        switch (ParseDepth)
+        {
+        case 0: /* top level */
+            if (Token == XXX
+            break;
+        
+        case X: /* primary expression */
+            switch (Token)
+            {
+                case TokenIdentifier:       IntValue = XXX; GoUp = TRUE; break;
+                case TokenIntegerConstant:  IntValue = Lexer->Value.Integer; GoUp = TRUE; break;
+                case TokenStringConstant:   StringValue = Lexer->Value.String; GoUp = TRUE; break;
+                case TokenOpenBracket:
+        }
+    }
+}
 
 /* quick scan a source file for definitions */
 void ParseScan(const Str *FileName, const Str *Source)
@@ -29,7 +60,6 @@ void ParseScan(const Str *FileName, const Str *Source)
     }
 }
 
-
 void ParseCallFunction(const Str *FuncIdent, int argc, char **argv)
 {
 }