API sample code

.gitignore

@@ -308,3 +308,5 @@ xcuserdata/
 *.xccheckout
 *.xcscmblueprint
 *.xcuserstate
+
+*.xcworkspacedata

api/Makefile

@@ -0,0 +1,38 @@
+COMPILER_DIR = ../src/compiler/
+RUNTIME_DIR = ../src/runtime/
+SHARED_DIR = ../src/shared/
+UTILS_DIR = ../src/utils/
+EXEC_GRAVITY_SRC = exec_gravity.c
+
+SRC = $(wildcard $(COMPILER_DIR)*.c) \
+      $(wildcard $(RUNTIME_DIR)/*.c) \
+      $(wildcard $(SHARED_DIR)/*.c) \
+      $(wildcard $(UTILS_DIR)/*.c)
+
+INCLUDE = -I$(COMPILER_DIR) -I$(RUNTIME_DIR) -I$(SHARED_DIR) -I$(UTILS_DIR)
+CFLAGS = $(INCLUDE) -O2 -std=gnu99 -fgnu89-inline
+OBJ = $(SRC:.c=.o)
+
+ifeq ($(OS),Windows_NT)
+	# Windows
+	LDFLAGS = -lm -lShlwapi
+else
+	UNAME_S := $(shell uname -s)
+	ifeq ($(UNAME_S),Darwin)
+		# MacOS
+		LDFLAGS = -lm 
+	else
+		# Linux
+		LDFLAGS = -lm -lrt
+	endif
+endif
+
+all: exec_gravity
+
+exec_gravity:	$(OBJ) $(EXEC_GRAVITY_SRC)
+	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
+
+.PHONY: all clean exec_gravity
+
+clean:
+	rm -f $(OBJ) exec_gravity

api/api.xcodeproj/project.pbxproj

@@ -0,0 +1,419 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 46;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		A922BAF41E6E0F5C00D9FAD0 /* gravity_ast.c in Sources */ = {isa = PBXBuildFile; fileRef = A922BAC21E6E0F5C00D9FAD0 /* gravity_ast.c */; };
+		A922BAF51E6E0F5C00D9FAD0 /* gravity_codegen.c in Sources */ = {isa = PBXBuildFile; fileRef = A922BAC41E6E0F5C00D9FAD0 /* gravity_codegen.c */; };
+		A922BAF61E6E0F5C00D9FAD0 /* gravity_compiler.c in Sources */ = {isa = PBXBuildFile; fileRef = A922BAC61E6E0F5C00D9FAD0 /* gravity_compiler.c */; };
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+			buildActionMask = 2147483647;
+			dstPath = /usr/share/man/man1/;
+			dstSubfolderSpec = 0;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 1;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
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+
+/* Begin PBXFrameworksBuildPhase section */
+		A922BAAD1E6E0F2600D9FAD0 /* Frameworks */ = {
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+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		A922BAA71E6E0F2600D9FAD0 = {
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+			children = (
+				A9BA7D441E74180100259798 /* exec_gravity.c */,
+				A922BABC1E6E0F5C00D9FAD0 /* gravity */,
+				A922BAB11E6E0F2600D9FAD0 /* Products */,
+			);
+			sourceTree = "<group>";
+		};
+		A922BAB11E6E0F2600D9FAD0 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				A922BAB01E6E0F2600D9FAD0 /* exec_gravity */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		A922BABC1E6E0F5C00D9FAD0 /* gravity */ = {
+			isa = PBXGroup;
+			children = (
+				A922BAC01E6E0F5C00D9FAD0 /* compiler */,
+				A922BADA1E6E0F5C00D9FAD0 /* runtime */,
+				A922BAE01E6E0F5C00D9FAD0 /* shared */,
+				A922BAEB1E6E0F5C00D9FAD0 /* utils */,
+			);
+			name = gravity;
+			path = ../src;
+			sourceTree = "<group>";
+		};
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+			isa = PBXGroup;
+			children = (
+				A922BAC11E6E0F5C00D9FAD0 /* debug_macros.h */,
+				A922BAC21E6E0F5C00D9FAD0 /* gravity_ast.c */,
+				A922BAC31E6E0F5C00D9FAD0 /* gravity_ast.h */,
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+				A922BAC51E6E0F5C00D9FAD0 /* gravity_codegen.h */,
+				A922BAC61E6E0F5C00D9FAD0 /* gravity_compiler.c */,
+				A922BAC71E6E0F5C00D9FAD0 /* gravity_compiler.h */,
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+				A922BAC91E6E0F5C00D9FAD0 /* gravity_ircode.h */,
+				A922BACA1E6E0F5C00D9FAD0 /* gravity_lexer.c */,
+				A922BACB1E6E0F5C00D9FAD0 /* gravity_lexer.h */,
+				A922BACC1E6E0F5C00D9FAD0 /* gravity_optimizer.c */,
+				A922BACD1E6E0F5C00D9FAD0 /* gravity_optimizer.h */,
+				A922BACE1E6E0F5C00D9FAD0 /* gravity_parser.c */,
+				A922BACF1E6E0F5C00D9FAD0 /* gravity_parser.h */,
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+				A922BAD11E6E0F5C00D9FAD0 /* gravity_semacheck1.h */,
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+				A922BAD31E6E0F5C00D9FAD0 /* gravity_semacheck2.h */,
+				A922BAD41E6E0F5C00D9FAD0 /* gravity_symboltable.c */,
+				A922BAD51E6E0F5C00D9FAD0 /* gravity_symboltable.h */,
+				A922BAD61E6E0F5C00D9FAD0 /* gravity_token.c */,
+				A922BAD71E6E0F5C00D9FAD0 /* gravity_token.h */,
+				A922BAD81E6E0F5C00D9FAD0 /* gravity_visitor.c */,
+				A922BAD91E6E0F5C00D9FAD0 /* gravity_visitor.h */,
+			);
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+			children = (
+				A922BADB1E6E0F5C00D9FAD0 /* gravity_core.c */,
+				A922BADC1E6E0F5C00D9FAD0 /* gravity_core.h */,
+				A922BADD1E6E0F5C00D9FAD0 /* gravity_vm.c */,
+				A922BADE1E6E0F5C00D9FAD0 /* gravity_vm.h */,
+				A922BADF1E6E0F5C00D9FAD0 /* gravity_vmmacros.h */,
+			);
+			path = runtime;
+			sourceTree = "<group>";
+		};
+		A922BAE01E6E0F5C00D9FAD0 /* shared */ = {
+			isa = PBXGroup;
+			children = (
+				A922BAE11E6E0F5C00D9FAD0 /* gravity_array.h */,
+				A922BAE21E6E0F5C00D9FAD0 /* gravity_delegate.h */,
+				A922BAE31E6E0F5C00D9FAD0 /* gravity_hash.c */,
+				A922BAE41E6E0F5C00D9FAD0 /* gravity_hash.h */,
+				A922BAE51E6E0F5C00D9FAD0 /* gravity_macros.h */,
+				A922BAE61E6E0F5C00D9FAD0 /* gravity_memory.c */,
+				A922BAE71E6E0F5C00D9FAD0 /* gravity_memory.h */,
+				A922BAE81E6E0F5C00D9FAD0 /* gravity_opcodes.h */,
+				A922BAE91E6E0F5C00D9FAD0 /* gravity_value.c */,
+				A922BAEA1E6E0F5C00D9FAD0 /* gravity_value.h */,
+			);
+			path = shared;
+			sourceTree = "<group>";
+		};
+		A922BAEB1E6E0F5C00D9FAD0 /* utils */ = {
+			isa = PBXGroup;
+			children = (
+				A922BAEC1E6E0F5C00D9FAD0 /* gravity_debug.c */,
+				A922BAED1E6E0F5C00D9FAD0 /* gravity_debug.h */,
+				A922BAEE1E6E0F5C00D9FAD0 /* gravity_json.c */,
+				A922BAEF1E6E0F5C00D9FAD0 /* gravity_json.h */,
+				A922BAF01E6E0F5C00D9FAD0 /* gravity_utils.c */,
+				A922BAF11E6E0F5C00D9FAD0 /* gravity_utils.h */,
+			);
+			path = utils;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+		A922BAAF1E6E0F2600D9FAD0 /* exec_gravity */ = {
+			isa = PBXNativeTarget;
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+}

api/exec_gravity.c

@@ -0,0 +1,90 @@
+//
+//  Sample code to demonstrate how to execute Gravity code from C
+//  Created by Marco Bambini on 06/03/2017.
+//
+
+#include <stdio.h>
+#include "gravity_compiler.h"
+#include "gravity_macros.h"
+#include "gravity_core.h"
+#include "gravity_vm.h"
+
+// gravity func source code
+static const char *source = "func add (a, b) {return a + b;}; \
+                             func mul (a, b) {return a * b;};";
+
+// error callback
+static void report_error (error_type_t error_type, const char *message,
+						  error_desc_t error_desc, void *xdata) {
+	#pragma unused(xdata)
+	const char *type = "N/A";
+	switch (error_type) {
+		case GRAVITY_ERROR_NONE: type = "NONE"; break;
+		case GRAVITY_ERROR_SYNTAX: type = "SYNTAX"; break;
+		case GRAVITY_ERROR_SEMANTIC: type = "SEMANTIC"; break;
+		case GRAVITY_ERROR_RUNTIME: type = "RUNTIME"; break;
+		case GRAVITY_WARNING: type = "WARNING"; break;
+		case GRAVITY_ERROR_IO: type = "I/O"; break;
+	}
+	
+	if (error_type == GRAVITY_ERROR_RUNTIME) printf("RUNTIME ERROR: ");
+	else printf("%s ERROR on %d (%d,%d): ", type, error_desc.fileid, error_desc.lineno, error_desc.colno);
+	printf("%s\n", message);
+}
+
+
+int main(int argc, const char * argv[]) {
+	
+	// setup a minimal delegate
+	gravity_delegate_t delegate = {
+		.error_callback = report_error
+	};
+	
+	// compile source into a closure
+	gravity_compiler_t *compiler = gravity_compiler_create(&delegate);
+	gravity_closure_t *closure = gravity_compiler_run(compiler, source, strlen(source), 0, true);
+	if (!closure) return -1;
+	
+	// setup a new VM and a new fiber
+	gravity_vm *vm = gravity_vm_new(&delegate);	
+	
+	// transfer memory from compiler to VM and then free compiler
+	gravity_compiler_transfer(compiler, vm);
+	gravity_compiler_free(compiler);
+	
+	// load closure into VM context
+	gravity_vm_loadclosure(vm, closure);
+	
+	// create parameters (that must be boxed) for the closure
+	gravity_value_t n1 = VALUE_FROM_INT(30);
+	gravity_value_t n2 = VALUE_FROM_INT(50);
+	gravity_value_t params[2] = {n1, n2};
+	
+	// lookup add closure
+	gravity_value_t add = gravity_vm_getvalue(vm, "add", strlen("add"));
+	if (!VALUE_ISA_CLOSURE(add)) return -2;
+	
+	// execute add closure and print result
+	if (gravity_vm_runclosure(vm, VALUE_AS_CLOSURE(add), add, params, 2)) {
+		gravity_value_t result = gravity_vm_result(vm);
+		printf("add result ");
+		gravity_value_dump(result, NULL, 0);
+	}
+	
+	// lookup mul closure
+	gravity_value_t mul = gravity_vm_getvalue(vm, "mul", strlen("mul"));
+	if (!VALUE_ISA_CLOSURE(mul)) return -3;
+	
+	// execute mul closure and print result
+	if (gravity_vm_runclosure(vm, VALUE_AS_CLOSURE(mul), mul, params, 2)) {
+		gravity_value_t result = gravity_vm_result(vm);
+		printf("mul result ");
+		gravity_value_dump(result, NULL, 0);
+	}
+	
+	// free vm and core classes
+	gravity_vm_free(vm);
+	gravity_core_free();
+	
+    return 0;
+}