Add LLVM support for Number.

Makefile

@@ -3,6 +3,7 @@
 ################################################################################
 
 CFLAGS=-g -Wall -Wextra -Wno-self-assign -std=c99
+CXXFLAGS=-g -Wall -Wextra -Wno-self-assign
 
 LEX_SOURCES=$(wildcard src/*.l) 
 LEX_OBJECTS=$(patsubst %.l,%.c,${LEX_SOURCES}) $(patsubst %.l,%.h,${LEX_SOURCES})
@@ -15,12 +16,14 @@ OBJECTS=$(patsubst %.c,%.o,${SOURCES}) $(patsubst %.l,%.o,${LEX_SOURCES}) $(pats
 LIB_SOURCES=$(filter-out kaleidoscope.c,${SOURCES})
 LIB_OBJECTS=$(filter-out kaleidoscope.o,${OBJECTS})
 TEST_SOURCES=$(wildcard tests/*_tests.c)
-TEST_OBJECTS=$(patsubst %.c,%,${TEST_SOURCES})
+TEST_OBJECTS=$(filter-out tests/codegen_tests,$(patsubst %.c,%,${TEST_SOURCES}))
 
 LEX=flex
 YACC=bison
 YFLAGS=-dv
 
+LLVM_CC_FLAGS=`llvm-config --cflags`
+LLVM_LINK_FLAGS=`llvm-config --libs --cflags --ldflags core analysis executionengine jit interpreter native`
 
 ################################################################################
 # Default Target
@@ -58,12 +61,20 @@ src/parser.c: src/parser.y
 	${YACC} ${YFLAGS} --report-file=build/bison/report.txt -o $@ $^
 
 
+################################################################################
+# LLVM
+################################################################################
+
+src/codegen.o: src/codegen.c
+	${CC} ${LLVM_CC_FLAGS} ${CFLAGS} -c -o $@ $^
+
+
 ################################################################################
 # Tests
 ################################################################################
 
 .PHONY: test
-test: $(TEST_OBJECTS)
+test: $(TEST_OBJECTS) build/tests/codegen_tests
 	@sh ./tests/runtests.sh
 
 build/tests:
@@ -72,6 +83,12 @@ build/tests:
 $(TEST_OBJECTS): %: %.c build/tests build/libkaleidoscope.a
 	$(CC) $(CFLAGS) -Isrc -o build/$@ $< build/libkaleidoscope.a
 
+build/tests/codegen_tests.o: tests/codegen_tests.c build/libkaleidoscope.a
+	$(CC) $(LLVM_CC_FLAGS) $(CFLAGS) -Isrc -c -o $@ tests/codegen_tests.c build/libkaleidoscope.a
+
+build/tests/codegen_tests: build/tests/codegen_tests.o build/libkaleidoscope.a
+	$(CXX) $(LLVM_LINK_FLAGS) $(CXXFLAGS) -Isrc -o $@ build/tests/codegen_tests.o build/libkaleidoscope.a
+
 
 ################################################################################
 # Clean up

src/ast.c

@@ -1,7 +1,9 @@
 #include <stdlib.h>
 #include <string.h>
+
 #include "ast.h"
 
+
 //==============================================================================
 //
 // Functions

src/ast.h

@@ -1,3 +1,6 @@
+#ifndef _ast_h
+#define _ast_h
+
 //==============================================================================
 //
 // Definitions
@@ -99,4 +102,6 @@ kal_ast_node *kal_ast_prototype_create(char *name, char **args,
 kal_ast_node *kal_ast_function_create(kal_ast_node *prototype,
     kal_ast_node *body);
 
-void kal_ast_node_free(kal_ast_node *node);
+void kal_ast_node_free(kal_ast_node *node);
+
+#endif

src/codegen.c

@@ -0,0 +1,67 @@
+#include <stdlib.h>
+#include <string.h>
+#include <llvm-c/Core.h>
+
+#include "codegen.h"
+
+
+//==============================================================================
+//
+// Functions
+//
+//==============================================================================
+
+//--------------------------------------
+// Number
+//--------------------------------------
+
+// Generates an LLVM value object for a Number AST.
+//
+// node    - The node to generate code for.
+//
+// Returns an LLVM value reference.
+LLVMValueRef kal_codegen_number(kal_ast_node *node)
+{
+    return LLVMConstReal(LLVMDoubleType(), node->number.value);
+}
+
+
+//--------------------------------------
+// Code Generation
+//--------------------------------------
+
+// Recursively generates LLVM objects to build the code.
+//
+// node    - The node to generate code for.
+// module  - The module that the code is being generated for.
+// builder - The LLVM builder that is creating the IR.
+//
+// Returns an LLVM value reference.
+LLVMValueRef kal_codegen(kal_ast_node *node, LLVMModuleRef module,
+                              LLVMBuilderRef builder)
+{
+    // Recursively free dependent data.
+    switch(node->type) {
+        case KAL_AST_TYPE_NUMBER: {
+            return kal_codegen_number(node);
+            break;
+        }
+        case KAL_AST_TYPE_VARIABLE: {
+            break;
+        }
+        case KAL_AST_TYPE_BINARY_EXPR: {
+            break;
+        }
+        case KAL_AST_TYPE_CALL: {
+            break;
+        }
+        case KAL_AST_TYPE_PROTOTYPE: {
+            break;
+        }
+        case KAL_AST_TYPE_FUNCTION: {
+            break;
+        }
+    }
+
+    return NULL;
+}

src/codegen.h

@@ -0,0 +1,16 @@
+#ifndef _codegen_h
+#define _codegen_h
+
+#include <llvm-c/Core.h>
+#include "ast.h"
+
+//==============================================================================
+//
+// Functions
+//
+//==============================================================================
+
+LLVMValueRef kal_codegen(kal_ast_node *node, LLVMModuleRef module,
+    LLVMBuilderRef builder);
+
+#endif

tests/codegen_tests.c

@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <string.h>
+#include <ast.h>
+#include <codegen.h>
+#include <llvm-c/Core.h>
+#include "minunit.h"
+
+
+//==============================================================================
+//
+// Test Cases
+//
+//==============================================================================
+
+//--------------------------------------
+// Number
+//--------------------------------------
+
+int test_kal_codegen_number() {
+    kal_ast_node *node = kal_ast_number_create(10);
+    LLVMValueRef value = kal_codegen(node, NULL, NULL);
+    LLVMTypeRef type = LLVMTypeOf(value);
+    mu_assert(LLVMGetTypeKind(type) == LLVMDoubleTypeKind, "");
+    mu_assert(LLVMIsConstant(value), "");
+    kal_ast_node_free(node);
+    return 0;
+}
+
+
+//==============================================================================
+//
+// Setup
+//
+//==============================================================================
+
+int all_tests() {
+    mu_run_test(test_kal_codegen_number);
+    return 0;
+}
+
+RUN_TESTS()