2b385b2e20
This change adds a new Diagable interface from which you can obtain a diagnostic's location information (Document and Location). A new At function replaces WithDocument, et al., and will be used soon to permit all arbitrary AST nodes to report back their position.
128 lines
3.3 KiB
Go
128 lines
3.3 KiB
Go
// Copyright 2016 Marapongo, Inc. All rights reserved.
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package compiler
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import (
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"os"
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"github.com/golang/glog"
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"github.com/marapongo/mu/pkg/ast"
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"github.com/marapongo/mu/pkg/compiler/core"
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"github.com/marapongo/mu/pkg/diag"
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"github.com/marapongo/mu/pkg/errors"
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"github.com/marapongo/mu/pkg/util"
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"github.com/marapongo/mu/pkg/workspace"
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)
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// Compiler provides an interface into the many phases of the Mu compilation process.
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type Compiler interface {
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core.Phase
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// Context returns the current compiler context.
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Context() *core.Context
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// Build detects and compiles inputs from the given location, storing build artifacts in the given destination.
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Build(inp string, outp string)
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// BuildFile uses the given Mufile directly, and stores build artifacts in the given destination.
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BuildFile(mufile []byte, ext string, outp string)
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}
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// compiler is the canonical implementation of the Mu compiler.
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type compiler struct {
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ctx *core.Context
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opts Options
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deps map[ast.Ref]*ast.Stack // a cache of mapping names to loaded dependencies.
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}
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// NewCompiler creates a new instance of the Mu compiler, with the given initialization settings.
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func NewCompiler(opts Options) Compiler {
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return &compiler{
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ctx: &core.Context{},
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opts: opts,
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deps: make(map[ast.Ref]*ast.Stack),
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}
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}
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func (c *compiler) Context() *core.Context {
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return c.ctx
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}
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func (c *compiler) Diag() diag.Sink {
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return c.opts.Diag
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}
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func (c *compiler) Build(inp string, outp string) {
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glog.Infof("Building target '%v' (out='%v')", inp, outp)
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// First find the root of the current package based on the location of its Mufile.
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w, err := workspace.New(inp, c.Diag())
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if err != nil {
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c.Diag().Errorf(errors.ErrorIO.AtFile(inp), err)
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return
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}
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mufile, err := w.DetectMufile()
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if err != nil {
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c.Diag().Errorf(errors.ErrorIO.AtFile(inp), err)
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return
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}
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if mufile == "" {
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c.Diag().Errorf(errors.ErrorMissingMufile, inp)
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return
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}
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// Read in the contents of the document and make it available to subsequent stages.
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doc, err := diag.ReadDocument(mufile)
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if err != nil {
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c.Diag().Errorf(errors.ErrorCouldNotReadMufile.AtFile(mufile), err)
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return
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}
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c.buildDocument(w, doc, outp)
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}
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func (c *compiler) BuildFile(mufile []byte, ext string, outp string) {
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glog.Infof("Building in-memory %v file (bytes=%v out='%v')", ext, len(mufile), outp)
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// Default to the current working directory for the workspace.
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dir, err := os.Getwd()
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if err != nil {
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c.Diag().Errorf(errors.ErrorIO, err)
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return
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}
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w, err := workspace.New(dir, c.Diag())
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if err != nil {
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c.Diag().Errorf(errors.ErrorIO, err)
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return
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}
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doc := &diag.Document{File: workspace.Mufile + ext, Body: mufile}
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c.buildDocument(w, doc, outp)
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}
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func (c *compiler) buildDocument(w workspace.W, doc *diag.Document, outp string) {
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glog.Infof("Building doc '%v' (bytes=%v out='%v')", doc.File, len(doc.Body), outp)
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if glog.V(2) {
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defer func() {
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glog.V(2).Infof("Building doc '%v' completed w/ %v warnings and %v errors",
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doc.File, c.Diag().Warnings(), c.Diag().Errors())
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}()
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}
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// Perform the front-end phases of the compiler.
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stack := c.buildDocumentFE(w, doc)
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if !c.Diag().Success() {
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return
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}
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util.Assert(stack != nil)
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// Next, perform the semantic analysis phases of the compiler.
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c.buildDocumentSema(w, stack)
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if !c.Diag().Success() {
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return
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}
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// Finally, perform the back-end phases of the compiler.
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c.buildDocumentBE(w, stack)
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}
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