200 lines
4.5 KiB
Go
200 lines
4.5 KiB
Go
/*
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Serene --- Yet an other Lisp
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Copyright (c) 2020 Sameer Rahmani <lxsameer@gnu.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package core
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import (
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"fmt"
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"strings"
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"github.com/gookit/color"
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"serene-lang.org/bootstrap/pkg/ast"
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"serene-lang.org/bootstrap/pkg/errors"
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)
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func toRepresanbleString(ast ...IRepresentable) string {
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var results []string
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for _, x := range ast {
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results = append(results, x.String())
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}
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return strings.Join(results, " ")
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}
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func toPrintableString(ast ...IRepresentable) string {
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var results []string
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for _, x := range ast {
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if printable, ok := x.(IPrintable); ok {
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results = append(results, printable.PrintToString())
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continue
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}
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results = append(results, x.String())
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}
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return strings.Join(results, " ")
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}
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func Pr(rt *Runtime, ast ...IRepresentable) {
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fmt.Print(toRepresanbleString(ast...))
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}
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func Prn(rt *Runtime, ast ...IRepresentable) {
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fmt.Println(toRepresanbleString(ast...))
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}
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func Print(rt *Runtime, ast ...IRepresentable) {
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fmt.Print(toPrintableString(ast...))
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}
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func Println(rt *Runtime, ast ...IRepresentable) {
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fmt.Println(toPrintableString(ast...))
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}
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func printError(rt *Runtime, err IError, stage int) {
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loc := err.GetLocation()
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source := loc.GetSource()
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startline := source.LineNumberFor(loc.GetStart())
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if startline > 0 {
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startline -= 1
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}
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endline := source.LineNumberFor(loc.GetEnd()) + 1
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var lines string
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for i := startline; i <= endline; i++ {
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line := source.GetLine(i)
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if line != "----" {
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lines += fmt.Sprintf("%d:\t%s\n", i, line)
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}
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}
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color.Yellow.Printf(
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"%d: At '%s':%d\n",
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stage,
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source.NS,
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source.LineNumberFor(loc.GetStart()),
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)
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color.White.Printf("%s\n", lines)
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errTag := color.Red.Sprint(err.GetErrType().String())
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fmt.Printf("%s: %s\nAt: %d to %d\n", errTag, err.String(), loc.GetStart(), loc.GetEnd())
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}
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func frameCaption(traces *TraceBack, frameIndex int) string {
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if frameIndex >= len(*traces) || frameIndex < 0 {
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panic("Out of range index for the traceback array. It shouldn't happen!!!")
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}
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var prevFrame *Frame
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place := "*run*"
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frame := (*traces)[frameIndex]
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loc := frame.Caller.GetLocation()
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source := loc.GetSource()
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if frameIndex != 0 {
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prevFrame = (*traces)[frameIndex-1]
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place = prevFrame.Callee.GetName()
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}
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return color.Yellow.Sprintf(
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"%d: In function '%s' at '%s':%d\n",
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frameIndex,
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place,
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source.NS,
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source.LineNumberFor(loc.GetStart()),
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)
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}
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func frameSource(traces *TraceBack, frameIndex int) string {
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if frameIndex >= len(*traces) || frameIndex < 0 {
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panic("Out of range index for the traceback array. It shouldn't happen!!!")
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}
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frame := (*traces)[frameIndex]
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caller := frame.Caller
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callerLoc := caller.GetLocation()
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callerSource := callerLoc.GetSource()
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startline := callerSource.LineNumberFor(callerLoc.GetStart())
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if startline > 0 {
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startline -= 1
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}
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endline := callerSource.LineNumberFor(callerLoc.GetEnd()) + 1
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var lines string
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for i := startline; i <= endline; i++ {
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fLoc := frame.Caller.GetLocation()
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if fLoc.IsKnownLocaiton() {
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line := fLoc.GetSource().GetLine(i)
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if line != ast.OutOfRangeLine {
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lines += fmt.Sprintf("%d:\t%s\n", i, line)
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}
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} else {
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lines += "Builtin\n"
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}
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}
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return lines
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}
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func printErrorWithTraceBack(rt *Runtime, err IError) {
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trace := err.GetStackTrace()
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for i := range *trace {
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fmt.Print(frameCaption(trace, i))
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color.White.Printf(frameSource(trace, i))
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}
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loc := err.GetLocation()
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errTag := color.Red.Sprint(err.GetErrType().String())
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fmt.Printf(
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"%s: %s\nAt: %d to %d\n",
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errTag,
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err.String(),
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loc.GetStart(),
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loc.GetEnd(),
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)
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if err.GetErrno() != errors.E0000 {
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fmt.Printf("For more information on this error try: `serene explain %s`\n", err.GetErrno())
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}
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}
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func PrintError(rt *Runtime, err IError) {
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switch err.GetErrType() {
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case SyntaxError, SemanticError:
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printError(rt, err, 0)
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return
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case RuntimeError:
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printErrorWithTraceBack(rt, err)
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return
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default:
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panic(fmt.Sprintf("Don't know about error type '%d'", err.GetErrType()))
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}
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}
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