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Add basic if statement

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Nathan Braswell
2018-09-18 09:04:05 -04:00
parent 2d9f5dc6fe
commit 3e3564ea54
1 changed files with 23 additions and 3 deletions
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26
k.krak
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@@ -103,6 +103,8 @@ fun main(argc: int, argv: **char): int {
var parse_tree = parse.parse_input(read_file(file_path), file_path)
trim(parse_tree)
name_ast_map[file_path] = syntax_to_ast(file_path, parse_tree, import_paths)
printlnerr("syntax_to_ast " + file_path + ":")
print_tree(name_ast_map[file_path], 1)
}
set_binding(b.first, name_ast_map[file_path])
}
@@ -290,7 +292,18 @@ fun main(argc: int, argv: **char): int {
})
C_str += idt + "}"
}
ast::_if() { error("if gen unimplemented"); }
ast::_if() {
C_str += idt + "if ("
emit_C(t->children[0], 0)
C_str += ") {\n"
emit_C(t->children[1], level + 1)
C_str += ";\n" + idt + "}"
if t->children.size > 2 {
C_str += " else {\n"
emit_C(t->children[2], level + 1)
C_str += ";\n" + idt + "}"
}
}
ast::_match() { error("no match should remain at C emit"); }
ast::_case() { error("no case should remain at C emit"); }
ast::_while() { error("while gen unimplemented"); }
@@ -352,7 +365,7 @@ fun main(argc: int, argv: **char): int {
printlnerr("doing pass new style " + file_pass.second + " on " + to_string(file_pass.first->data))
passes[file_pass.second](file_pass.first)
})
C_str = C_declaration_str + "\n" + C_str
C_str = "#include <stdbool.h>\n" + C_declaration_str + "\n" + C_str
println()
println()
@@ -497,6 +510,8 @@ fun syntax_to_ast(file_name: str, syntax: *tree<symbol>, import_paths: ref vec<s
return syntax_to_ast_helper(syntax->children[0])
else if (syntax->data.name == "code_block")
return _block(syntax->children.map(syntax_to_ast_helper))
else if (syntax->data.name == "if_statement")
return _if(syntax->children.map(syntax_to_ast_helper))
else if (syntax->data.name == "return_statement")
return _return(syntax->children.map(syntax_to_ast_helper))
else if (syntax->data.name == "defer_statement")
@@ -556,10 +571,14 @@ fun syntax_to_ast(file_name: str, syntax: *tree<symbol>, import_paths: ref vec<s
}
} else if (syntax->data.name == "number")
return _value(concat(syntax), type(base_type::_int(), 0, false))
else if (syntax->data.name == "bool")
return _value(concat(syntax), type(base_type::_bool(), 0, false))
else if (syntax->data.name == "scoped_identifier" || syntax->data.name == "identifier")
return make_binding(concat(syntax))
else
else {
error(syntax, "Cannot transform")
return null<tree<ast>>()
}
}
var result = _translation_unit(file_name, syntax->children.map(syntax_to_ast_helper))
return result
@@ -628,6 +647,7 @@ fun trim(parse_tree: *tree<symbol>) {
remove_node(symbol("\"(\"", true), parse_tree)
remove_node(symbol("\")\"", true), parse_tree)
remove_node(symbol("\"if\"", true), parse_tree)
remove_node(symbol("\"else\"", true), parse_tree)
remove_node(symbol("\"while\"", true), parse_tree)
remove_node(symbol("\"__if_comp__\"", true), parse_tree)
remove_node(symbol("\"comp_simple_passthrough\"", true), parse_tree)