2 files changed, 259 insertions, 0 deletions
diff --git a/src/program/program.c b/src/program/program.c
new file mode 100644
index 0000000..5cf8cc3
--- /dev/null
+++ b/src/program/program.c
@@ -0,0 +1,183 @@
+#ifndef PROGRAM_C
+#define PROGRAM_C
+#include<program.h>
+
+struct Source* extract_source(char *src_name)
+{
+	FILE *file;
+
+	struct Source *ret;
+	
+	file=fopen(src_name,"r");
+	if(file==NULL)
+		return NULL;
+	if(fseek(file,0L,SEEK_END)!=0)
+		return NULL;
+
+	ret=malloc(sizeof(struct Source));
+	ret->src_size=ftell(file);
+	ret->where_in_src=0;
+	ret->src_name=src_name;
+	ret->src=malloc(ret->src_size);
+	ret->current_column=0;
+	ret->current_row=0;
+
+	fseek(file,0L,SEEK_SET);
+
+
+	fread(ret->src,sizeof(char),ret->src_size,file);
+
+	fclose(file);
+	return ret;
+}
+struct Options* parse_command_line(int argc,char **argv)
+{
+	struct Options *ret;
+	int i;
+
+	assert(argv!=NULL && argc>0);
+
+	ret=malloc(sizeof(struct Options));
+	ret->target=OPTION_DEFAULT;
+	ret->src_name=NULL;
+	ret->is_quiet=0;
+
+	for(i=0;i<argc;++i)
+	{
+		if(!strncmp(argv[i],"--print-tokens",sizeof("--print-tokens")))
+			ret->target=OPTION_TARGET_TOKENS;
+		else if(!strncmp(argv[i],"--print-ast",sizeof("--print-ast")))
+			ret->target=OPTION_TARGET_AST;
+		else if(!strncmp(argv[i],"-o",sizeof("-o")) || !strncmp(argv[i],"--output",sizeof("--output")))
+		{
+			if(++i<argc)
+			{
+				if(strnlen(argv[i],101)<100)
+					ret->src_name=argv[i];
+				else if(!ret->is_quiet)
+				{
+					fprintf(stderr,"Error: Output filename is too long");
+					exit(1);
+				}else
+				{
+					exit(1);
+				}
+			}
+		}else if(strnlen(argv[i],101)<100)
+		{
+			ret->src_name=argv[i];	
+		}else if(!ret->is_quiet)
+		{
+			fprintf(stderr,"Error: Input filename is too long");
+			exit(1);
+		}else
+		{
+			exit(1);
+		}
+
+	}
+
+	if(ret->target==OPTION_DEFAULT)
+		ret->target=OPTION_TARGET_AST;
+
+	return ret;
+}
+struct Translation_Data* get_translation_data()
+{
+	struct Translation_Data *ret;
+	ret=malloc(sizeof(struct Translation_Data));
+	ret->errors=malloc(sizeof(struct Queue));
+	ret->tokens=malloc(sizeof(struct Queue));
+	
+	Queue_Init(ret->errors);
+	Queue_Init(ret->tokens);
+
+	ret->hold_number_of_errors=0;
+
+	return ret;
+}
+struct Error* get_error(char *message,size_t row,size_t column)
+{
+	struct Error *ret;
+	ret=malloc(sizeof(struct Error));
+	ret->message=message;
+	ret->row=row+1;
+	ret->column=column+1;
+}
+void push_lexing_error(char *error_message,struct Source *src,struct Translation_Data *translation_data)
+{
+	Queue_Push(translation_data->errors,get_error(error_message,src->current_row,src->current_column));
+}
+void push_parsing_error(char *error_message,struct Translation_Data *translation_data)
+{
+	struct token *error_token;
+	error_token=Queue_Pop(translation_data->tokens);
+	Queue_Push(translation_data->errors,get_error(error_message,error_token->row,error_token->column));
+}
+char has_new_errors(struct Translation_Data *translation_data)
+{
+	if(translation_data->hold_number_of_errors!=translation_data->errors->size)
+	{
+		translation_data->hold_number_of_errors=translation_data->errors->size;
+		return 1;
+	}else
+	{
+		return 0;
+	}
+}
+
+void delete_translation_data(struct Translation_Data *data)
+{
+	struct Error *hold_error;
+	struct token *hold_token;
+
+	while(data->tokens->size>0)
+		delete_token(Queue_Pop(data->tokens));
+	free(data->tokens);
+	while(data->errors->size>0)
+		delete_error(Queue_Pop(data->errors));
+	free(data->errors);
+
+	free(data);
+}
+void delete_source(struct Source *src)
+{
+	free(src->src_name);
+	free(src->src);
+	free(src);
+}
+void delete_options(struct Options *options)
+{
+	free(options);
+}
+void delete_error(struct Error *error)
+{
+	free(error->message);
+	free(error);
+}
+char get_and_check(struct Translation_Data *translation_data,enum Keyword kw)
+{
+	if( ( (struct token *)translation_data->tokens->first->data)->type==kw)
+	{
+		delete_token(Queue_Pop(translation_data->tokens));
+		return 1;
+	}else
+	{
+		return 0;
+	}
+}
+enum Keyword get_kw(struct Translation_Data *translation_data)
+{
+	return ( (struct token*)translation_data->tokens->first->data)->type;
+}
+void chomp(struct Translation_Data *translation_data)
+{
+	assert(translation_data->tokens->size>0);
+	delete_token(Queue_Pop(translation_data->tokens));
+}
+void touch_errors(struct Translation_Data *translation_data)
+{
+	assert(translation_data->hold_number_of_errors>0);
+	--translation_data->hold_number_of_errors;
+}
+#endif
diff --git a/src/program/program.h b/src/program/program.h
new file mode 100644
index 0000000..d5e45b7
--- /dev/null
+++ b/src/program/program.h
@@ -0,0 +1,76 @@
+#ifndef PROGRAM_H
+#define PROGRAM_H
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <queue.h>
+#include <lexer.h>
+#include <assert.h>
+
+struct token;
+enum Keyword;
+
+enum Options_Target_Type
+{
+	OPTION_TARGET_TOKENS,
+	OPTION_TARGET_AST,
+	OPTION_DEFAULT,
+};
+
+struct Source
+{
+	size_t src_size;
+	size_t where_in_src;
+	size_t current_column;
+	size_t current_row;
+	char *src_name;
+	char *src;
+
+};
+
+struct Options
+{
+	enum Options_Target_Type target;
+	int is_quiet:1;
+	char *src_name;
+};
+	
+struct Error
+{
+	char *message;
+	size_t row;
+	size_t column;
+};
+
+struct Translation_Data
+{
+	struct Queue *errors;
+	struct Queue *tokens;
+	size_t hold_number_of_errors;
+};
+struct Program
+{
+	struct Source *source;
+	
+};
+
+struct Source* extract_source(char *src_name);
+struct Options* parse_command_line(int argc,char **argv);
+struct Translation_Data* get_translation_data();
+struct Error* get_error(char *message,size_t row,size_t column);
+
+void push_lexing_error(char *error_message,struct Source *src,struct Translation_Data *translation_data);
+void push_parsing_error(char *error_message,struct Translation_Data *translation_data);
+char has_new_errors(struct Translation_Data *translation_data);
+void touch_errors(struct Translation_Data *translation_data);
+char get_and_check(struct Translation_Data *translation_data,enum Keyword kw);
+enum Keyword get_kw(struct Translation_Data *translation_data);
+void chomp(struct Translation_Data *translation_data);
+
+void delete_translation_data(struct Translation_Data *data);
+void delete_source(struct Source *src);
+void delete_options(struct Options *options);
+void delete_error(struct Error *error);
+
+
+#endif