From a75baf72962ef81746fd95bcc861d7382cd7c6fd Mon Sep 17 00:00:00 2001
From: pjht <pjht@users.noreply.github.com>
Date: Sun, 9 Sep 2018 12:41:21 -0500
Subject: [PATCH] Start parser work

---
 cinc.xcodeproj/project.pbxproj |  6 +++
 cinc/parser.c                  | 68 ++++++++++++++++++++++++++++++++++
 cinc/parser.h                  | 14 +++++++
 3 files changed, 88 insertions(+)
 create mode 100644 cinc/parser.c
 create mode 100644 cinc/parser.h

diff --git a/cinc.xcodeproj/project.pbxproj b/cinc.xcodeproj/project.pbxproj
index a4d28fe..e854bc5 100644
--- a/cinc.xcodeproj/project.pbxproj
+++ b/cinc.xcodeproj/project.pbxproj
@@ -10,6 +10,7 @@
 		F61910612142A876003B8798 /* main.c in Sources */ = {isa = PBXBuildFile; fileRef = F61910602142A876003B8798 /* main.c */; };
 		F61910692142A8C5003B8798 /* tokenize.c in Sources */ = {isa = PBXBuildFile; fileRef = F61910682142A8C5003B8798 /* tokenize.c */; };
 		F65A954E21454B31005FCAF5 /* token.c in Sources */ = {isa = PBXBuildFile; fileRef = F65A954D21454B31005FCAF5 /* token.c */; };
+		F661C333214590930021FCCE /* parser.c in Sources */ = {isa = PBXBuildFile; fileRef = F661C332214590930021FCCE /* parser.c */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -31,6 +32,8 @@
 		F61910682142A8C5003B8798 /* tokenize.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = tokenize.c; sourceTree = "<group>"; };
 		F65A954C21454B21005FCAF5 /* token.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = token.h; path = ../../../../token.h; sourceTree = "<group>"; };
 		F65A954D21454B31005FCAF5 /* token.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = token.c; sourceTree = "<group>"; };
+		F661C331214590930021FCCE /* parser.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = parser.h; sourceTree = "<group>"; };
+		F661C332214590930021FCCE /* parser.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = parser.c; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -68,6 +71,8 @@
 				F61910682142A8C5003B8798 /* tokenize.c */,
 				F65A954D21454B31005FCAF5 /* token.c */,
 				F65A954C21454B21005FCAF5 /* token.h */,
+				F661C331214590930021FCCE /* parser.h */,
+				F661C332214590930021FCCE /* parser.c */,
 			);
 			path = cinc;
 			sourceTree = "<group>";
@@ -130,6 +135,7 @@
 			files = (
 				F65A954E21454B31005FCAF5 /* token.c in Sources */,
 				F61910692142A8C5003B8798 /* tokenize.c in Sources */,
+				F661C333214590930021FCCE /* parser.c in Sources */,
 				F61910612142A876003B8798 /* main.c in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
diff --git a/cinc/parser.c b/cinc/parser.c
new file mode 100644
index 0000000..942048d
--- /dev/null
+++ b/cinc/parser.c
@@ -0,0 +1,68 @@
+//
+//  parser.c
+//  cinc
+//
+//  Created by Peter Terpstra on 9/9/18.
+//  Copyright © 2018 Peter Terpstra. All rights reserved.
+//
+
+#include "parser.h"
+#include "token.h"
+#include <stdlib.h>
+
+static Token lahead;
+
+static void advance() {
+    lahead=*(lahead.next);
+}
+
+static void match(unsigned char type) {
+    if (lahead.type!=type) {
+        exit(1);
+    }
+    advance();
+}
+
+static const char* getid() {
+    if (lahead.type!=TYPE_IDENT) {
+        exit(1);
+    }
+    const char* id=lahead.val->strval;
+    advance();
+    return id;
+}
+
+static int get_num() {
+    if (lahead.type!=TYPE_NUM) {
+        exit(1);
+    }
+    int num=lahead.val->intval;
+    advance();
+    return num;
+}
+
+static const char* gettype() {
+    if (lahead.type!=TYPE_TYPE) {
+        exit(1);
+    }
+    const char* id=lahead.val->strval;
+    advance();
+    return id;
+}
+
+static char** func() {
+    const char* type=gettype();
+    const char* name=getid();
+    match('(');
+    match(')');
+    match('{');
+    //block code here
+    match('}');
+    //return ast here
+}
+
+char** parse(Token* prg) {
+    lahead=*(prg);
+    return func();
+}
+
diff --git a/cinc/parser.h b/cinc/parser.h
new file mode 100644
index 0000000..10a0764
--- /dev/null
+++ b/cinc/parser.h
@@ -0,0 +1,14 @@
+//
+//  parser.h
+//  cinc
+//
+//  Created by Peter Terpstra on 9/9/18.
+//  Copyright © 2018 Peter Terpstra. All rights reserved.
+//
+
+#ifndef parser_h
+#define parser_h
+
+#include <stdio.h>
+
+#endif /* parser_h */